Mining equipment catalog

How to identify the mining equipment quality and price

Due to the large-scale development and use of mineral resources, the available resources are reduced, resulting in a decline in the grade of raw ore mining, and the progressed processing of smelting and other qualification requirements for mineral processing products is also increasing. At the same time, human environmental awareness is growing. These realities have placed increasing demands on beneficiation equipment, prompting the development of mineral processing equipment to be larger, better and more energy-efficient.

 

Contents 

 

. 1 Introduction

. 2 common types

. 3 mineral processing solutions

. 4 equipment introduction

. ▪ Ball Mill

. ▪ Magnetic Separator Machine

. ▪ Jaw Crusher

. ▪ Cone Crusher

. ▪ Vibrating Screen

. ▪ Shaker Table

. ▪ Flotation Machine

. ▪ Vibrating Feeder

. ▪ Ore Feeder

. ▪ Mixing Tank

. ▪ Rotary Dryer

. ▪Vacuum Disk Filter

. ▪ Linear Vibrating Screen

. ▪ Belt Conveyor 

. ▪ Rotary kiln

. ▪ Hydrocyclone

. ▪ 5 mineral processing methods

. ▪ Gravity separator 

. ▪ Flotation

. ▪ Magnetic separation

. ▪ Electrostatic separation

. 6 Resistance

. 7 development trends

. 8 classification products

. 9  maintenance

. 10 Technical Studies

 

Introduction

 
The development of mineral processing equipment and mineral processing technology is synchronized, the process is dominant, and the equipment is the foundationThe birth of a new type of mineral processing equipment often leads to changes in the beneficiation processThe technical level of the equipment is not only the premise of the process level but also affects the smooth flow and application of the production processThe advancement of science and technology, the mutual penetration of various scientific categories and the integration of various industries, new structures, new materials, new technologies, and new processing technologies emerge one after another. The extensive application of mechatronics and automatic control technology has promoted beneficiation. Continuous innovation of equipment and development towards energy efficiency.
 

Common Type

 
Crushing equipment: jaw crusher, hammer crusher, impact crusher, cone crusher, tooth roll crusher, double roll crusher, etc.
 
Grinding equipment: ultra-fine lamination self-grinding machine, cement ball mill, cone ball mill, ceramic ball mill, energy-saving ball mill, high-energy ball mill, high-fine ball mill, lattice ball mill, overflow ball mill, premix mill, etc.
 
Screening and grading equipment: multi-frequency dewatering screen, high-frequency screen, circular vibrating screen, linear vibrating screen, YK series circular vibrating screendrum screen, finished screen, spiral classifier, etc.
 
Magnetic separation equipment: wet magnetic separator, dry magnetic separator; strong magnetic field separator, medium magnetic field separator, weak magnetic field separator, river sand separator, wet permanent magnet cylinder, boiling Concentrators, etc.
 
Washing equipment: SF flotation machine, BF flotation machine, XJK series flotation machine, full-section airlift microbubble flotation machine, agitating flotation machine, spiral classifier, vacuum filter, dry sorter, Sand washing machine, etc. Mineral processing auxiliary equipment: vibrating feeder, trough feeder, pendulum feeder, mixing tank , bucket elevator , belt conveyor, vibrating feeder, disc feeder, high efficiency concentrator , disc Granulator, washing machine, shaker , spiral chute, hydro cyclone, jig, tailings recovery machine, cement mill, raw material mill, MBS rod mill, etc.
 
Gravity separator equipment: boiling concentrator, shaker table, spiral chute, jig concentrator, water jacket centrifuge, centrifugal disc sorter, heavy medium dressing equipment, etc.
 
Thickener equipment: boiling concentrator, central drive concentrator, peripheral drive concentrator, high efficiency concentrator, etc.
 
Drying and calcining equipment: dryer, slime dryer, sludge dryer, powder dryer, slag dryer, fly ash dryer, rotary kiln, etc.
 

Mineral Processing Method

 
There are many kinds of mineral processing equipment, such as dry separation, wet separation, Gravity separation, magnetic separation, flotation, and other mineral processing methods. The following is an introduction to a variety of mineral processing methods:
 
Iron: 1, Crusher; 2, grinding process; 3, sorting technology; 4, sintered pellet technology;
 
Manganese: mechanical selection (including beneficiation, screening, gravity, strong magnetic separation, and flotation), as well as fire method sub-set, chemical beneficiation method.
 
Chrome: Firstly, using jig concentrator, shaker table, spiral concentrator, centrifugal concentrator, and a belt chute, it is also sorted by hydrocyclone.
 
Titanium vanadium magnetite: it is carried out by magnetically selecting the magnetite concentrate after a magnetic separation process of grinding, a coarse, a fine, and a sweep.
 
Copper: flotation, magnetic separation, gravity separator, etc. or wet smelting.
 
Lead-zinc: general-purpose mineral separation methods such as magnetic – floating, gravity – floating, gravity – magnetic – floatation.
 
Aluminum: Hand section is generally used.
 
Nickel: 1, flotation; 2, crushing, sieving and other processes to remove the bulky bedrock with a low degree of differentiation and low nickel.
 
Cobalt: Flotation is generally used.
 
Tungsten: According to the ore type it is divided into black tungsten and white tungsten. The ore dressing methods include manual selection, gravity separation, flotation, magnetic separation, and electrification.
 
Tin: The ore dressing method is gravity separation and flotation process.
 
Molybdenum: mainly flotation.
 
Mercury: Hand selection, gravity separation, and flotation, flotation is widely used and most effective.
 
Antimony: hand selection, gravity separation, and flotation.
 
Platinum: 1, ball mill, using a suitable cyclone grading; 2, recovery rate;
 
Gold: Gold is extremely low in the ore. To extract gold, it is necessary to crushing and grinding the ore and separate the gold by mineral processingMainly gravity separation and flotation.
 
Silver: 1, flotation; 2, single flotation method and flotation- gravity method, flotation cyanidation process, flotation is the most important part.
 
Lithium: hand selection method, flotation method, chemical or chemical – flotation combined method, thermal selection method, radioactive selection method, and granular flotation method.
 
Strontium: The most common structural process is jigging – shaker-process.
 
Rare earth metals: generally use magnetic separation, flotation to obtain concentrates containing rare earth oxides about 60%
 

Equipment introduction

 

Ball Mill

 
Ball mill is the key equipment for secondary crusher after the material has been crushed.
 
Ball mill is one of the high-fine grinding machines widely used in industrial production.
 
There are many types of ball mills, such as handball mills, horizontal ball mills, ceramic ball mills, ball mill bushes, energy-saving ball mills, overflow ball mills, lattice ball mills, and enamel ball mills.
 
Ball mill is suitable for grinding various ores and other materials. It is widely used in mineral processing, building materials, and chemical industries. It can be divided into dry and wet grinding methods. According to different mining methods, it can be divided into two types: lattice type and overflow type.
 
Classifier (Spiral Classifier), The classifier is widely used in the concentrator to form a closed-loop cycle with the ball mill to split the ore, or to classify the ore and fine mud in the gravity ore dressing plant, and to carry out the slurry in the metal beneficiation process. Granular grading, and deliming, dewatering and other operations in washing operations. The machine has the characteristics of simple structure, reliable operation, and convenient operation. The classifier is based on the principle that the solid particle size is different and the specific gravity is different, so the sedimentation velocity in the liquid is different. The fine ore particles float in the water to overflow and the coarse ore particles sink to the bottom of the tank. A grading device that is driven by a screw to the upper part for mechanical grading. The power level that is ground in the mill can be filtered, and then the coarse material is screwed into the mill feed port by a rotary piece, and the filter is filtered. The fine material discharged is discharged from the overflow pipe. The base of the machine is made of channel steel, and the body is welded by steel plate. The screw shaft has a water inlet head, a shaft head, and a pig iron sleeve. It is wear-resistant and durable. The lifting device is divided into electric and manual.
 

Magnetic Separator

 
Magnetic separator can sort a lot of minerals such as magnetite, limonite, hematite, manganese siderite, ilmenite, wolframite, manganese ore, manganese carbonate ore, metallurgical manganese ore, manganese oxide ore, iron ore, kaolin, rare earth ore, etc. can be selected by magnetic separatorThe magnetic separation process is carried out in the magnetic field of the magnetic separator by means of the action of magnetic force and mechanical force on the ore particlesDifferent magnetic ore particles move along different trajectories and are sorted into two or more separate beneficiation products.
 
The new electromagnetic high-gradient magnetic separator effectively solves the problems faced by the price increase of permanent magnet rare earth. The high-gradient magnetic separation equipment brings together the large-cavity high-performance physical magnet technology.
 
The new multi-spike non-embroidered magnetic fiber material technology, solid-liquid three-phase flow film sorting technology, high-power low-voltage high-current rectification technology, PLC electronic control technology and flow, temperature, pressure and other testing techniques.
 
The sorting magnetic field is high (up to 2.2T ), the magnetic field gradient is high, and the magnetic field size can be adjusted as needed.
 
With programmable control, the entire production process is fully automated, making it easy to change the process.
 
The electromagnetic high-gradient magnetic separator is a sorting tank containing a certain amount of magnetically conductive stainless steel wool (or steel mesh) in a pin-mounted solenoid coil. After the coil is excited, the magnetic conductive stainless steel is magnetized, and the surface is highly praised. An inhomogeneous magnetic field, a high-gradient magnetizing magnetic field, when a paramagnetic material passes through the steel wool in the sorting tank, is subjected to a magnetic field force proportional to the product of the applied magnetic field and the magnetic field gradient, adsorbed on the surface of the steel wool, instead of The magnetic material flows directly into the non-magnetic product tank through a magnetic field, through non-magnetic valves and pipesWhen the weak magnetic material collected by the steel wool reaches a certain level (determined by the process requirements), the ore is stoppedDisconnect the excitation power, flush the magnetic material, and the magnetic material passes through the magnetic valve and pipe and flows into the magnetic product tank. Then proceed to the second assignment, so cycle, and repeat.
 

Jaw Crusher

 
Jaw crusher is mainly used for medium-size crushing of various ores and bulk materialsThe Great Wall Heavy Industry Jaw Crusher ( Smashed ) is widely used in mining, smelting, building materials, roads, railways, water conservancy, and chemical industries. The highest compressive strength of the crushed material is 320Mpa.
 

Cone Crusher

 
Cone crusher is widely used in mining, building materials, chemical industry, metallurgy, and other industries. It can carry out medium and fine crushing operations on various ores, rocks and other materials with medium or higher hardness.
 

Vibrating Screen

 
The trajectory of the vibrating screen is circular, and the circular vibrating screen is circular motion. It is a multi-layer, high-efficiency new vibrating screen. The circular vibrating screen adopts the cylindrical eccentric shaft exciter and the partial block to adjust the amplitude. The material sieve line is long and the screening specifications are many. It is specially designed for the quarrying stone of the quarry and is also available for mining, coal preparation, and beneficiation. The building materials, power, and chemical sectors are used for product grading. They have the advantages of reliable structure, strong excitation force, high screening efficiency, low vibration noise, and durability.
 

Shaking Table

 
Shaking table is a gravity beneficiation equipment for sorting fine-grained materials. It is widely used in the selection of tin, tungsten, gold and silver, lead, zinc, antimony, antimony, iron, manganese, ferrotitanium and coalI plant shaker has a long history, and continue to develop innovative, from the initial straight bed shaker base on a single to Qu Bo bed shaker (the last century, 70 years); to the hyperbolic bed shaker (on In the 1990s, the processing volume, recovery rate, and enrichment ratio of the shaker were greatly improved.
 

Flotation Machine

 
Flotation machine is suitable for the selection of colored ferrous metals, and can also be used for the selection of non-metal such as coal fluorite and talcThe flotation machine drives the impeller to rotate by the motor triangle generation and generates centrifugal force to form a negative pressure. On the one hand, the air is mixed with the slurry, and on the other hand, the slurry is mixed with the medicine, and the foam is refined to make the mineral bond foam. , float to the pulp surface to form mineralized foam. Adjust the height of the gate, control the liquid level, and make them useful foam scraped off by the scraper. All of the above are under the more important equipment in the beneficiation equipment. The equipment listed below are some auxiliary equipment of the mineral processing equipment, so the introduction I will not introduce them again and again.
 

Vibrating Feeder

 
Vibrating feeder is also called the vibrating feeder. In the production process, the vibrating feeder can feed the block and granular materials uniformly, regularly and continuously from the storage bin to the receiving device, and continuously and evenly feed the crushing machine in the gravel production line. And a coarse screening of materials, widely used in metallurgy, coal mining, mineral processing, building materials, chemicals, abrasives, and other industries in the crushing, screening and joint equipment.
 
Vibrating feeder is used to supply materials uniformly or quantitatively from the storage bin or other storage equipment to the receiving equipment, which is essential equipment for the automation of the flow operation. Vibrating feeders can be divided into open type and closed type. Motor vibration feeders, feed hoppers, and conveyors can be produced according to requirements.
 
Vibrating feeder is generally used in the mining industry. It is a new type of quantitative feeding equipment that can adapt to the requirements of continuous production. Therefore, it has been widely used in mining, metallurgy, coal, and other industries.
 

Trough Feeder

 
The trough type feeder is mainly used for feeding the ball mill. It is installed at the discharge port under the silo and can be evenly supplied to the ball mill. It is suitable for granular and powdery materials below 25 mm.
 

Mixing Tank

 
Mixing Tank for pulp before flotation stir, then mix the pulp with an agent, create conditions for the option to mining operations.
 
The working principle and scope of use of the mixing tank:
 
This machine is driven by the electric motor V-belt drive to rotate the impeller, fully mix the drug and the slurry, and increase the reaction time of the drug to strengthen the reaction quality of the drug. This machine is suitable for mining and can also be used in various chemical industries. The trough is stirred. The mixing drum is suitable for various metal mines. It is mainly used for stirring before flotation. It is a mixture of chemicals and pulp, and can also be used for stirring other non-metallic minerals. It is used in a concentration of not more than 30% (by weight) of the fixed component particle size of less than 1mm. It is in the form of a flat-bottomed barrel-shaped radiation cycle spiral impeller mechanically agitatedThe use of the mixing drum indicates that the bolt of the pump body is tightened before use, whether the pump shaft wheel is flexible, and then the machine is turned on, and the other flotation machine. Consumables: impeller, stator.
 

Dryer

 
The dryer mainly includes: rotary dryer, drum dryer, industrial dryer
 
Tunnel dryer
 
The dryer is mainly used for drying certain moisture or particle size materials in the departments of mineral processing, building materials, metallurgy, chemical industry, and printingThe rotary dryer has strong adaptability to materials, can dry various materials, and the equipment operation is simple and reliable, so it is widely used.
 
Indirect heat transfer dryer, which is widely used in building materials, metallurgy, chemical industry, cement industry to dry slag limestone, coal powder, slag, clay, and other materialsThe machine is mainly composed of a rotating body, a lifting plate, a transmission device, a supporting device, and a sealing ringThe utility model has the advantages of reasonable structure, excellent production, high output, low energy consumption, and convenient operation.
 

Vacuum Disk Filter

 
Concentrator: It is suitable for the demineralization of concentrates and tailings in the concentrator. It is widely used in metallurgy, chemical, coal, non-metal ore dressing, environmental protection, and other industriesThe high-efficiency concentrator is not simply a sedimentation device, but a new type of dewatering device that combines the filtration characteristics of the mud layer.
 
The characteristics of the thickener are: ( 1 ) adding flocculant to increase the particle size of the settled solid particles, thereby accelerating the sedimentation speed; ( 2 ) installing inclined plates to shorten the sedimentation distance of the ore particles and increasing the settlement area; ( 3 ) exerting the sedimentary phase of the mud deposit The layer flocculates, filters, compresses and increases the amount of treatment; ( 4 ) is equipped with a complete self-control facility.
 
Concentrator- > High efficiency concentrator- > Product details:
 
The concentrator (high-efficiency concentrator) generally consists of a concentration tank, a truss, a transmission, a truss lifting device, a feeding device, a discharging device, and a signal safety device.
 
The main feature of the concentrator (high-efficiency concentrator) is to add a certain amount of flocculant to the slurry to be concentrated, so that the ore particles in the slurry form floccules, accelerate the sedimentation speed, and thereby achieve the purpose of improving the concentration efficiency.
 
The concentrator (high-efficiency concentrator) is widely used in the treatment of mineral mud, wastewater and waste slag in metallurgy, mining, coal, chemical, building materials, and environmental protection sectors, and is of great significance for improving the return water utilization rate and the concentration of underflow transport and protecting the environment.
 
Concentrator classification: central transmission concentrator, peripheral transmission concentrator, high-efficiency concentrator, sludge concentrator, batch concentrator, vertical flow, and radial flow continuous concentrator.
 

Linear Vibrating Screen

 
The linear vibrating screen is driven by a double-vibration motor. When the two vibrating motors are synchronized and rotated, the exciting force generated by the eccentric block cancels each other in a direction parallel to the motor axis and is stacked in a direction perpendicular to the motor axis. A combined force, so the movement of the sieve machine is a straight line. The two motor shafts have an inclination angle with respect to the screen surface. Under the combined force of the excitation force and the material self-gravity, the material is thrown up and jumped forward in a linear motion on the screen surface, thereby achieving the purpose of screening and classifying the materials. Can be used in the assembly line for automated operations. It has the characteristics of low energy consumption, high efficiency, simple structure, easy maintenance, and no closed dust in the fully enclosed structure. The highest screening number is 325 mesh, and 7 different particle sizes can be sieved.
 

Belt Conveyors

 
The belt conveyor has the advantages of large conveying capacity, simple structure, convenient maintenance and standardization of components. It is widely used in mining, metallurgy, coal and other industries to transport loose materials or finished articles. According to the transportation process requirements, it can be transported in a single unit. It can also be used as a horizontal or inclined conveying system composed of or with other conveying equipment to meet the needs of different layout types of working lines . It is suitable for conveying powder density and granularity with a bulk density of less than 1.67/ ton / m3. Small pieces of low-friction materials and bagged materials, such as coal, gravel, sand, cement, fertilizer, grain, etc. The temperature of the material to be delivered is less than 60 °C . The captain and assembly form can be determined according to the user’s requirements. The drive can be used with an electric roller or a drive device with a drive frame.
 

Rotary Kiln

 
Rotary kiln refers to the rotary calcining kiln (commonly known as rotary kiln), which belongs to building materials equipmentRotary kiln can be divided into cement kiln, metallurgical chemical kiln, and lime kiln according to different processing materialsIn many production industries such as building materials, metallurgy, chemical industry, environmental protection, etc., rotary materials are widely used for mechanical, physical or chemical treatment of solid materials. Such equipment is called rotary kiln.
 
The application of rotary kiln originated from cement production. In 1824, British cement worker J Asp invented the intermittent operation of the kiln ; in 1883, Germany’s Dietz invented the continuous operation of the multi-layer vertical kiln ; 1885 British Lansham ( ERansome) invented the rotary kiln, which was put into production after the patents were obtained in the United Kingdom and the United States, and quickly gained considerable economic benefitsThe invention of rotary kiln has made the cement industry develop rapidly, and it has also promoted the research on the application of rotary kiln. Soon, rotary kiln is widely used in many industrial fields and is becoming more and more important in these productions, becoming the core of corresponding enterprise production. device. Its technical performance and operation determine the quality, output, and cost of the company’s products to a large extent. ” As long as the big kiln turns, there are tens of millions. ” This folk song is a vivid description of the importance of the rotary kiln in production. In the field of application of rotary kiln, the cement industry has the largest number. The whole production process of cement is summarized as “ two grinding and one burning”, in which “ one burning ” is the process of burning raw materials prepared by grinding and burning into clinker under the high temperature of rotary kilnTherefore, the rotary kiln is the main engine in the production of cement, commonly known as the ” heart ” of the cement factory. In the building materials industry, in addition to wrought cement clinker, rotary kiln is also used for calcining clay, limestone and slag drying; in the production of refractory materials, the rotary kiln is used to calcine the raw materials to make the dimensional stability and strength increase. Processing and forming. In the non-ferrous and black metallurgy, iron, aluminum, copper, zinc, tin, nickel, tungsten, chromium, antimony, and other metals are used as smelting equipment for rotary kiln, and ore, concentrate, intermediates, etc. are sintered and calcined. For example, aluminum is used to roast aluminum hydroxide into alumina; in iron making, it is used to produce pellets for blast furnace ironmaking; foreign ” SL/RN method ” and ” Krupp method ” use it for iron ore Direct reduction; chlorination volatilization roasting method is used to extract tin and leadDuring the beneficiation process, the lean kiln is used to magnetize the lean iron ore to change the original weak magnetic properties of the ore to strong magnetic properties to facilitate magnetic separationIn the chemical industry, rotary soda is used to produce soda, calcined phosphate fertilizer, and barium sulfide. In the 1960s, apple et al. invented a new process for producing phosphoric acid from rotary kiln. The method has the advantages of low energy consumption, low power consumption, no use of sulfuric acid and available medium and low-grade phosphate rock, and is quickly popularized.
 
In addition, in terms of environmental protection, developed countries in the world have used cement kilns to burn hazardous waste and garbage for more than 20 years. This not only reduces waste and harmless waste but also uses waste as fuel to save coal powder. Recycling of waste.
 

Cement Rotary Kiln

 
There are two main types of cement kiln, one is the kiln cylinder lying (slightly inclined), and can be used for rotary motion called rotary kiln (also called rotary kiln); the other type of kiln is not standing The turning is called the vertical kiln.
 
The type of cement rotary kiln is characterized by:
 
In the development process of the cement industry, different production methods and different types of the rotary kiln have appeared. According to the raw material preparation method, it can be divided into dry production and wet production. The rotary kiln compatible with the production method is divided into the dry rotary kiln. And wet hair rotary kiln two categories. Due to the different kiln heat exchange devices in the kiln, they can be divided into different types of the kiln. The classification of rotary kiln is rough as follows:
 
1, the type of wet rotary kiln:
 
The cement kiln used in the wet process is called the wet kiln, and the wet process is to make the raw material into a slurry having a water content of 32% to 40 %. Since it is prepared into a fluid slurry, the raw materials are well mixed, the raw material components are uniform, and the quality of the fired clinker is high, which is the main advantage of wet production.
 
2, the type of dry rotary kiln:
 
The advantages and disadvantages of dry rotary kiln compared with wet rotary kiln are just the oppositeThe dry process produces the raw meal as a dry raw meal with a moisture content generally less than 1 %, so it reduces the amount of heat required to evaporate moisture than the wet process. Because of the high temperature of the exhaust gas, the hollow kiln has a low heat consumption. The dry process produces the raw meal into a dry powder, which is less fluid than the mud. So, the raw materials are not well mixed and the ingredients are not uniform.
 
The type of cement shaft kiln is characterized by two types of shaft kiln used in China: ordinary shaft kiln and mechanical shaft kiln.
 
Ordinary shaft kiln is manual feeding and manual unloading or mechanical feeding, manual unloading; mechanical shaft kiln is mechanical feeding and mechanical unloadingThe mechanical shaft kiln is continuously operated, and its production, quality and labor productivity are higher than ordinary shaft kilnAccording to the requirements of building materials technology policy, small cement plants use the mechanized vertical kiln to gradually replace ordinary shaft kiln.
 

Hydrocyclone

 
The hydrocyclone has been widely used due to its simple structure and large processing capacityAt present, the specifications of the cyclone continue to develop in two extreme directionsFirst, miniaturization has been made in a10mm microtubules cyclone, it may be used 2 a 35m kaolin ultrafine gradeAnother direction is large, abroad diameter of 1000 a 1400mm of large-scale hydro-cyclone, as a large closed-circuit ball mill grinding of ore grading equipmentAt the same time, in order to increase the production capacity of a single piece of equipment and reduce the floor space of the equipment, large-scale concentrators generally use a cyclone group as a grading device. [1] 
 

Mineral Processing Method

 

Reselection Method

 
The re-election method is based on the difference in the relative density of minerals (usually called specific gravity ) to sort mineralsMineral particles of different densities are subjected to hydrodynamic forces and various mechanical forces in the moving medium (water, air, and heavy liquid), resulting in suitable loose delamination and separation conditions, so that different density of ore particles can be separated.
 

Flotation Method

 
The flotation method is based on the difference in physical and chemical properties of the mineral surface and is treated byflotation agent to selectively attach the useful mineral to the bubble to achieve the purpose of sorting.
 
The ore dressing of non-ferrous metal ore, such as copper, lead, zinc, sulfur, molybdenum and other mines, is mainly treated by flotation; some ferrous metals, rare metals and some non-metallic ores, such as graphite ore, apatite, etc. are also used for flotation Law selection.
 

Magnetic Separation

 
The magnetic separation method is based on the difference in mineral magnetic properties, and different minerals are subjected to different forces in the magnetic field of the magnetic separator, thereby obtaining sortingIt is mainly used for the selection of ferrous metal ores (iron, manganese, chromium); it is also used for the selection of colored and rare metal ores.
 

Electrostatic Separation

 
Electroporation is sorted based on the difference in mineral conductivity. When the mineral passes through the high-voltage electric field of the electric separator, the electrostatic force acting on the mineral is different due to the difference in the conductivity of the mineral, so that the mineral can be separatedElectroporation is used for the selection of rare metals, non-ferrous metals, and non-metallic oresMainly used for the separation and selection of mixed coarse concentrates; such as the separation of white tungsten and cassiterite; the selection of zircon, the selection of antimony ore.
 
Mineral processing equipment includes: ball mill, crusher, pulverizer, jaw crusher, impact crusher, cone crusher, ultra-fine crusher, magnetic separator, dry magnetic separator, wet magnetic separator, double force ring height Gradient magnetic separator, magnetite ore dressing equipment, flotation machine, mining flotation machine, classifier, spiral classifier, sorghum spiral classifier, dryer, rotary kiln, shaker, hoist, high frequency Sieve, finished sieve, high-efficiency concentrator, spiral chute, disc granulator, trough feeder, energy-saving ball mill .
 

Resistance

 
The resistance of the mineral processing equipment is also very important. The mineral processing equipment uses the wear-resistant ceramic sheet to prevent the wear of the new wear-resistant material technology. The wear-resistant ceramic sheet has excellent wear resistance and non-magnetic characteristics, making it have other metals. Unmatched superior performance with non-metallic materials, can replace austenitic stainless steel, wear-resistant rubber, wear-resistant non-metallic coatings, etc., widely used in iron ore beneficiation equipment, especially on the magnetic separator barrel, the service life is comparable The grinding rubber is increased by more than 5 times, and the performance price ratio is more than doubled.
 
Superhard wear-resistant ceramic hardness HRA ≥ 85, the highest can reach HRA92 or more, its particle erosion wear resistance is more than 10 times that of domestic wear-resistant rubber, more than 3 times imported rubber ;
 
Uniform non-magnetic wear-resistant ceramics do not have any magnetic properties, and have irreplaceable superior performance with other wear-resistant metal materials;
 
High separation rate: Since the wear-resistant ceramic has good surface characteristics, it can effectively improve the separation efficiency of iron powder and improve the grade of an iron fine powder;
 
Safe and reliable: the use of high-strength non-magnetic adhesive, the joint strength of wear-resistant ceramic and the metal cylinder can reach 30MPa shear strength ;
 
Wide adaptability: Wear-resistant ceramics are mainly used for non-magnetic magnetic separator barrel equipment, which is used to replace the wear-resistant rubber wear-resistant layer on the surface of austenitic stainless steel. In addition, it can also be used on a variety of wear and tear equipment, including various chutes, pipes, and other equipment;
 
The main specifications of the product: the standard specifications of wear-resistant ceramics are 10 × 10 × 3, 10 × 10 × 1.5, 20 × 20 × 3 ;
 
Flexible service:
 
1. A magnetic separator barrel for providing a new composite wear-resistant ceramic;
 
2. On-site repair and construction of various old magnetic separator cylinders;
 
3. Provide technical training and raw materials to be constructed by users themselves.
 
4, the mineral processing equipment using wear-resistant ceramic sheets with excellent wear resistance, can adapt to a variety of temperature changes and vibration conditions.
 

Development Trend

 
Crushing engineering equipment plays an important role in the process of mineral processing and mineral processing. The main development features are:
 
( 1 ) The advanced equipment of international famous brands is continuously optimized and developed in the direction of adopting new design ideas, introducing modern science and technology and large-scale.
 
( 2 ) The development of pulverization theory and experimental technology, catastrophe theory, fractal theory, discrete teaching, and other methods were introduced into the smash theory researchTheoretical studies on ball milling process and research on crushing work index have been reportedCrushing test techniques tend to replace semi-industrial tests with small laboratory tests and computer simulations.
 
( 3 ) The principle of material layer pulverization has had a great impact on the development and development of crushing engineering equipmentThis principle is commonly adopted in the development of new equipment and in the transformation of old equipment.
 
( 4 ) Since the key to achieving multiple crushing and grinding is to reduce the particle size of the final crushed product (ie, the grain size of the grinding), the proportion of crushing equipment in the research and development work in this range is greater than that of the grinding equipment, which is finely crushed. And the development and development of ultra-fine crushing equipment accounted for a large proportion.
 
( 5 ) In order to achieve more and more grinding, more and more international advanced crushing engineering equipment has been introduced in China, and more and more large-scale equipment has been introduced.
 
( 6 ) The crushing engineering equipment developed and developed in China is mainly small and medium-sized, and its development characteristics are diversified types. Some products (such as ball mills) are moving toward large-scale.
 
Buying mineral processing equipment must look at what minerals you want to choose, and then look at what mineral processing equipment you want to buyThe process of mineral processing determines the process, and the process determines the equipment.
 
What are the priorities in so many methods of mineral processing?
 
Magnetic Selection”Electrical Selection” Re-election”Flotation
 
Magnetic separation has the largest amount of processing, followed by electrification, re-election, and lowest flotation.
 
The magnetic separation environment is easy to control, and the electric selection is second. The area of the ore dressing required for re-election is too large, and the flotation pollution is severe.
 

Classified Equipment

 
Domestic classification equipment main classification product introduction
 
Dry magnetic separator, wet magnetic separator, etc., strong magnetic separator, electric separator and iron remover, etc.
 
The ore dressing equipment can be used for sorting various ores such as iron ore and manganese ore to improve the grade of ore. The strong magnetic separator is the mainstream product of iron ore equipment and manganese ore equipment:
 
The dry magnetic separator is a commonly used iron ore equipment and manganese ore equipment, and the mainstream strong magnetic separator ore dressing equipmentIron ore equipment and manganese ore equipment such as one-cylinder one-roller, one-cylinder multi-roller, multi-cylinder multi-roller, etc. meet the needs of users at different levels of dry strong magnetic separator.
 
Wet magnetic separator is a commonly used iron ore equipment ( iron ore magnetic separator ) and manganese ore equipment ( manganese ore magnetic separator), which is the mainstream strong magnetic separator ore dressing equipment.
 
An electromagnetic iron remover is the mainstream iron remover equipment, this column electromagnetic iron remover
 
It is divided into dry self-discharging electromagnetic iron remover and dry disc electromagnetic iron remover.
 

Routine Maintenance

 
Processing equipment, mining machinery, and equipment are spending a high price bought, plays a vital role in the concentrator production practice, if a bad or out of order, how to do it?
 
In production practice, wearing parts are often encountered, and their presence greatly affects the performance of the beneficiation equipment or product and production efficiencyMineral processing equipment maintenance and overhaul is an extremely important regular work, it should work closely with machine operation and maintenance of, the staff should be a comprehensive inspection duty. If we really want to maintain a good mineral processing equipment, mining equipment, at least Understand daily maintenance, let’s talk about daily mineral processing equipment maintenance and mineral processing equipment maintenance methods
 
First. Mineral processing equipment bearing shoulder the entire load of the machine, so a great relationship well lubricated bearing life, it directly affects the operation rate and the daily needs of the machine , therefore grease into a clean, mineral processing machinery and equipment which requires the injection of lubrication The oil must be clean and the seal must be good .
 
Secondly, in order to avoid collisions, to ensure a clean machine, not to corrosive chemicals partner, secondly, the machine, in order to avoid collisions, to ensure a clean machine, partner not too corrosive chemicals.
 
Finally, routine inspection of the reinforcement of mineral processing equipment, inspection results should be recorded , including not only the record of the past , maintenance , change pieces recorded , but also every day usage and workload records , to analyze , to determine mechanical failure , timely and accurate manner to eliminate failure risks , advantages and disadvantages of the use of performance machines and equipment , greatly limits the quality and progress of the project costsIn the use of mechanical equipment, mechanical and environmental factors directly affect the performance of the two major mechanical equipment. Machinery and equipment, used to improve performance, must strengthen the mechanical and environmental management of two main factors.
 
In short, if you want the mineral processing equipment to serve us for a long time, in addition to choosing a reputable mineral processing equipment manufacturer, you need careful maintenance.
 

Technical Research

 
I. Overview
 
The proven reserves of iron ore are 86 million tons, and the average grade of ore is 30.42 %. The ore body is distributed in the black cloud horn-slanted gneiss below the surface of 172m. The ore body has a length of about2000m and a dip angle of about 50 °. The deposit is buried under the erosion reference surface and the groundwater level, and the deposit is dominated by water-filled pore rock layers. Hydrogeological and engineering geological conditions are moderate. The ground in the mining area is farmland and village, and no caving is allowed. The ore production scale determined by the preliminary design plan is 2 million t/a. The mining method designed is a stage empty field post-filling mining method. The designed product scheme is a single iron concentrate. The beneficiation process plan is a three-stage and one-closed crushing grinding process. The ore dressing grade is 26.54 %, the final iron concentrate recovery rate is 80.01 %, the grade is 66.5 %, the yield is 32.03 %, and the annual output is 64.06 million t. The entire infrastructure investment of nearly 5 million, the amount of underground construction 24- Wan M3, the infrastructure of 3A. The mine has five shafts (main, auxiliary, inlet and control wells, north wind and south wind), and construction began in 2004. 2005 Nian 9 months, for maximum utilization of mineral resources and ore mining to reduce costs and improve the economic efficiency of the mine, while seeking to advance during the decision-making mine infrastructure, in order to solve the technical problems of the early mining, commissioned by the Changsha Institute of Mining Research conducted ” preliminary Mining Technology Research ” .
 
Second, the main principles and measures of research:
 
(1) Initial mining must fully consider the safety of mine production and achieve safe work throughout the production process;
 
(2) The overall consideration of mining is to focus on production, early mining, and long-term development;
 
(3) The plan should be practical, technically feasible, reliable in process, convenient in management, and economically reasonable;
 
(4) The project volume is small, the investment is saved, and the operating expenses are low;
 
(5) Recycling resources as much as possible;
 
(6) The initial mining makes full use of the existing development wellbore and roadway engineering to make the connection between initial mining and normal production;
 
(7) In the initial stage of mining, it is necessary to select a site with a high degree of exploration, high ore grade, and low stone inclusion rate to achieve the highest priority for mining and achieve maximum economic results;
 

(8) Adopting effective measures to achieve the initial economic benefits of mining and mining, and promote the early completion of the mine and smooth production.

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