WO2016127900A1 - 一种矿选系统 - Google Patents

一种矿选系统 Download PDF

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Publication number
WO2016127900A1
WO2016127900A1 PCT/CN2016/073412 CN2016073412W WO2016127900A1 WO 2016127900 A1 WO2016127900 A1 WO 2016127900A1 CN 2016073412 W CN2016073412 W CN 2016073412W WO 2016127900 A1 WO2016127900 A1 WO 2016127900A1
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Prior art keywords
layer
magnetic separation
disposed
wind
steady flow
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PCT/CN2016/073412
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English (en)
French (fr)
Inventor
胡沿东
张进才
张珂
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胡沿东
张进才
张珂
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Application filed by 胡沿东, 张进才, 张珂 filed Critical 胡沿东
Publication of WO2016127900A1 publication Critical patent/WO2016127900A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C21/00—Disintegrating plant with or without drying of the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B9/00—General arrangement of separating plant, e.g. flow sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets

Definitions

  • the present invention relates to a mineral separation system, and more particularly to a mineral separation system for ferrous and non-ferrous metals.
  • the mature magnetite ore selection technology is dry crushing + wet grinding + wet beneficiation (as shown in Figure 1), so the floor space is very large, the civil engineering foundation of the equipment is also very complicated, and the construction is difficult; the existing The mining technology requires a large amount of water for grinding and wet magnetic separation, so the water consumption is large, and the tail drainage causes water pollution.
  • Chinese patent CN102489373B discloses an iron ore processing beneficiation process, which is roughly the following steps: 1. The raw ore is crushed into a coarse ore having a size of ⁇ 30 mm, and the coarse ore is sent to the hoist by the first belt conveyor; The machine raises the ore to the second belt conveyor which is higher, and the second belt conveyor feeds the unpowered air sorter for air selection. The coarse ore with a particle size of >1.5 mm passes through the steady flow chamber and enters the roller press. The formed cake is mixed with the coarse ore fed from the first belt conveyor and then lifted again by the second belt conveyor to the unpowered air sorter for unpowered air separation; 3.
  • Fine ore powder with a particle size of ⁇ 1.5 mm It is sent to the power air sorter for air selection, and the ultrafine powder with particle size ⁇ 0.2mm is directly selected into the cyclone dust collector.
  • the unselected coarse material is sent to the magnetic separator to select fine iron powder, gangue mineral.
  • the cyclone dust collector will select the differential of particle size ⁇ 0.04, the unselected fine material is sent to the magnetic separator to select the fine iron powder, the gangue mineral is discharged as the tailings, and the fine powder enters the bag.
  • Collecting in dust collector or electric precipitator; 5. Collecting part for magnetic selection The powder machine selects fine iron powder, and the gangue mineral is discharged as tailings.
  • a grinding system as shown in Figures 2, 3 and 4 is designed by one of ordinary skill in the art in accordance with this patent document. However, the following problems are still prevalent in production systems made according to this patent document:
  • the selected magnetite grade is low and the output is low.
  • the grade of iron in the selected material is 10% to 15%
  • the grade of fine powder selected by one magnetic separation is about 30%
  • the fine powder grade selected by one magnetic separation is about 40%
  • the yield is about 40 tons
  • the fine powder grade selected by one magnetic separation is low
  • the number of machines is selected to improve the grade. Although increasing the number of magnetic separations can improve the grade of fine powder, the best record of the fine powder grade selected by the prior art dry magnetic separator by multiple magnetic separation is 45-50%.
  • iron fine powder ⁇ 58% (the prior art wet magnetic separator can reach more than 60% grade); if you consider increasing the number of magnetic separators, you need to increase the feed conveyor belt, magnetic The increase in the selection machine and the belt conveyor will increase the floor space and increase the energy consumption and belt consumption.
  • a mine selection system includes a roll press, a steady flow bin, a wind classification system, a power screening system, and a dry wind magnetic separation system, wherein the mine selection system is vertically arranged.
  • the mine selection system saves the floor space, does not need to use a belt conveyor for material transportation, saves huge cost and energy consumption; and does not need water during the mineral selection process, saves water resources, can be applied in the lack of The place of water resources.
  • the dry magnetic separation system is located below the power screening system.
  • the fine powder meeting the particle size requirement can be magnetically selected by entering the dry wind magnetic separation system more smoothly, without using a belt conveyor for transportation, saving cost and energy consumption, and optimizing the structure of the entire mining system.
  • the roller press, the steady flow bin, the wind classification system, the power screening system and the dry wind magnetic separation system are arranged in three, four or five layers in the longitudinal direction;
  • the machine is located on the bottom layer, the power screening system is located on the top floor, and the steady flow chamber is located in the middle layer.
  • the invention creatively designs the mine selection system as a "building" type arrangement, which can save the floor space of the mining system and reduce the investment cost and construction cost of the civil engineering foundation; and is beneficial to the natural flow of materials. It saves the energy and materials consumed by the materials during transportation; in addition, water is saved during the mining process, saving water resources. It avoids the pollution of wastewater to the environment and can be applied to places where water resources are lacking.
  • the roller press, the steady flow bin, the wind classification system, the power screening system, and the dry wind magnetic separation system are disposed in four layers in the longitudinal direction, and the first layer to the fourth layer are sequentially from the bottom layer to the top layer,
  • the roller press is disposed on the first layer
  • the steady flow chamber is disposed on the second layer
  • the wind classification system is disposed on the third layer
  • the power screening system is disposed on the fourth layer
  • the dry wind magnetic separation The system is set up on the first, second and third floors.
  • the mine selection system has a very small footprint and is highly conducive to material flow, saving transmission distance and reducing transmission energy consumption, and improving the efficiency of the entire grinding system.
  • the roller press, the steady flow bin, the wind classification system, the power screening system, and the dry wind magnetic separation system are disposed in three layers in the longitudinal direction, the roller press is disposed on the bottom layer, and the steady flow chamber is disposed on The intermediate layer, the wind classification system and the power screening system are disposed on the top layer, and the dry wind magnetic separation system is disposed on the intermediate layer and/or the bottom layer.
  • the main driving force when the wind grading system processes materials is wind power, the energy loss of sorting is small, and the sorting efficiency is high.
  • the roller press, the steady flow bin, the wind classification system, the power screening system, and the dry wind magnetic separation system are disposed in three layers in the longitudinal direction, the roller press is disposed on the bottom layer, and the steady flow chamber is disposed on The intermediate layer, the power screening system is disposed on the top layer, the wind classification system is disposed on the bottom layer, and the dry wind magnetic separation system is disposed on the bottom layer and the intermediate layer. It is convenient for inspection, maintenance and inspection.
  • the roller press, the steady flow bin, the wind classification system, the dynamic screening system, and the dry wind magnetic separation system are disposed in five layers in the longitudinal direction, and the first layer to the fourth layer are sequentially from the bottom layer to the top layer,
  • the roller press is disposed on the bottom layer
  • the steady flow chamber is disposed on the second layer
  • the power screening system is disposed on the top layer
  • the wind classification system is disposed on the third layer
  • the dry wind magnetic separation system is disposed on the bottom layer
  • the second layer and the third layer are disposed on the second, third, and fourth layers.
  • the ore grade is very low, such as the ore grade below 10%
  • the grade of refined powder can be more than 60% under the same floor space; and it provides space for optimizing the components and arrangement of the dry wind magnetic separation system.
  • the dry wind magnetic separation system includes a transition chamber and a dry wind magnetic separation unit. Improve the efficiency and stability of magnetic separation.
  • the transition chamber is located below the power screening system and the dry wind magnetic separation unit is located below the transition chamber.
  • the entire mine selection system is more optimally laid out, saving floor space and allowing materials to flow more smoothly.
  • the dry wind magnetic separation unit is a single or multiple sets.
  • the grade of the selected magnetite is further improved.
  • the plurality of sets of dry wind magnetic separation units are arranged in a longitudinal direction. Not only further saves floor space, but also more suitable for material flow, saving energy, improving taste, Yield.
  • the roller press is connected to the steady flow chamber, the steady flow chamber is connected to the wind classification system, the wind classification system is connected to the power screening system, the power screening system and the dry type The wind magnetic separation system is connected.
  • the power screening system is connected to the steady flow chamber.
  • the grade and yield of the grinding system are further improved.
  • the inlet of the transition chamber is connected to the power screening system, and the outlet of the transition chamber is connected to the dry wind magnetic separation system.
  • the mining system further includes a hoist; the hoist is connected to the wind grading system and the roller press, or/and the hoist and the wind grading system and the The steady flow bins are connected. Not only can the crushed coarse ore be easily sent to the wind classification system for sorting, but also the energy consumption is reduced, and the sorting efficiency is greatly improved.
  • the magnetic separation system also includes a dust collection system coupled to the power screening system.
  • the dust collecting system is connected to the dry wind magnetic separation system (unit). The dust collecting system collects and treats the dust generated in the mine selection, thereby preventing the dust from being discharged into the air and polluting the environment.
  • connection between the above devices is connected by pipes, chutes, non-standard slides or steel plate pipes, non-standard slides, and the like. Further reduce energy and equipment (such as belt) consumption, save costs, and avoid air pollution.
  • the crushed coarse ore first enters the wind classification system, the wind classification system classifies the coarse ore, and selects the fine ore corresponding to the particle size requirement to be sent to the power screening system, which does not meet
  • the coarse ore required for the particle size is fed into the steady flow bin, and then sent to the roller press through the collection and control of the steady flow bin, and the roller press performs roll crushing on the coarse ore, and the roller is rolled.
  • the crushed coarse ore is fed again into the wind classification system for grading; the dynamic screening system sifts the fine ore and selects the ultrafine ore that meets the particle size requirement to be sent to the next process without
  • the fine ore corresponding to the particle size requirement is fed into the steady flow chamber, and then collected and controlled by the steady flow to be fed into the roller press, and the roller press performs rolling and grinding on the fine ore.
  • rolling the crushed coarse ore into the wind turbine system for classification, repeating the above steps; and the ultrafine ore selected by the dynamic screening system to meet the particle size requirement is fed into the dry type
  • the wind magnetic separation system performs magnetic separation.
  • the mineral selection system of the present invention utilizes space resources to greatly optimize the overall structure of the system, not only material flow
  • the movement is smoother, and the land occupation is saved.
  • the production scale of 70 tons per hour is compared.
  • the prior art covers an area of about 6,000 square meters, and the invention covers only 1000-1200 square meters;
  • the transmission distance of the materials between the devices, the transmission distance of the materials in the prior art is about 600 meters, and the transmission distance of the materials of the invention is only 100-110 meters; the energy consumption is reduced, and the processing is the same, the prior art requires 23 degrees.
  • Electricity / h, and the invention only needs 14-15 degrees of electricity / h; improve the efficiency of the entire mining system, while the entire system does not use water, saving equipment costs and water resources.
  • the magnetic separation effect of the mineral selection system of the invention is good.
  • the selected ore magnetite grade can reach 60%-65% by using the mineral selection system of the invention; on the other hand, the selected system of the mine is selected.
  • the particle size of the finished product can be adjusted according to the needs of the user. The adjustment range is wide, and the particle size of the finished product can be adjusted: -200 mesh accounts for 55-95%.
  • the invention reduces the personnel demand, and at the same time reduces the quality requirements of the personnel; it is beneficial for the inspection personnel to troubleshoot.
  • the mineral selection system of the present invention has high efficiency and high yield. After the ore is treated by the ore sorting system of the present invention, the mineral particles are naturally dissociated and ground according to the crystal forming surface, and the metal mineral is completely dissociated; the microscopic particle shape of the product is flaky and needle-shaped, which is favorable for pellet formation and improved pellet efficiency. 30% is beneficial to improve the efficiency of magnetic separation; the output of grinding can be increased by 20-50%, and the efficiency is increased by 20-30%.
  • the comprehensive energy consumption of the mineral selection system of the invention is low, and the energy consumption of the mine selection system in the working process is lower than the ferrous metallurgical industry standard of the People's Republic of China - "The mining enterprise energy consumption quota standard Part 2: iron ore The primary standard for comprehensive energy consumption per unit ore dressing in the magnetic separation process and flotation process specified in YB/T4417.2-2014 is 30%.
  • the dust content of the air discharge is less than 20mg/Nm3, which is superior to the dust emission requirements stipulated by the national standard. No environmental protection requirements of not more than 30mg/Nm3, no air pollution.
  • the material flow in the grinding, grading, screening and magnetic separation process of the system is smooth, and there is no material siltation and clogging, which not only ensures the quality of the product, but also improves the use efficiency and service life of the equipment and reduces the maintenance cost.
  • the mineral selection system of the invention reduces the investment cost, and the existing mine selection system needs to establish a tailings dam to treat the waste water and waste generated after the magnetic separation, and the mine selection system only needs the dust collection system to produce the dried water. Dust collection and backfilling can solve the problem of waste.
  • the input cost of the existing technology on the tailings dam is about 10,000 yuan, and the maintenance cost in the later period is also very high, which requires about 10,000 yuan per year;
  • the invention does not need to build a tailings dam, and only needs to backfill the collected tail powder. Therefore, it only needs about 10,000 yuan in the treatment of the tailings, which can save expenditures of ⁇ and 10,000 yuan.
  • the fine powder selected by the mineral selection system of the invention is beneficial to pellet formation due to the microscopic particle shape of the fine powder, improves the pellet efficiency, reduces the operating cost of the pellet plant, and improves the efficiency of the pellet plant.
  • Figure 1 is a structural view of a prior art mining system
  • FIG. 2 is a mine selection system 1 designed by a person of ordinary skill in the art according to the background art;
  • Figure 3 is a mine selection system 2 designed by a person of ordinary skill in the art according to the background art;
  • Figure 4 is a mine selection system 3 designed by a person of ordinary skill in the art according to the background art
  • Figure 5 is a structural view of Embodiment 2.
  • Figure 6 is a structural view of Embodiment 3.
  • Figure 7 is a structural view of Embodiment 4.
  • Figure 8 is a structural view of Embodiment 5.
  • Fig. 9 is a configuration diagram of the fifth embodiment.
  • Embodiment 1 A mineral sorting system comprising a roller press, a steady flow bin, a wind classification system, a power screening system, and a dry wind magnetic separation system, the mine selection system being longitudinally arranged.
  • the crushed coarse ore first enters the wind classification system, the wind classification system classifies the coarse ore, and selects the fine ore corresponding to the particle size requirement to be sent to the dynamic screening system,
  • the coarse ore corresponding to the particle size requirement is fed into the steady flow bin, and then sent to the roller press through the collection and control of the steady flow bin, the roller press grinds the coarse ore, and Rolling and grinding the coarse ore after being sent to the wind classification system for classification;
  • the dynamic screening system is to screen the fine ore, and the ultrafine ore corresponding to the particle size requirement is selected and fed into the dry type.
  • the wind magnetic separation system performs magnetic separation and repeats the above steps.
  • the system does not require the use of water resources and can save space.
  • a mine selection system includes a roller press, a steady flow bin, a wind classification system, a power screening system, and a dry wind magnetic separation system, wherein the mining system is vertically arranged;
  • the roller press, the steady flow bin, the wind classification system, the power screening system and the dry wind magnetic separation system are arranged in four layers in the longitudinal direction, and the first layer to the fourth layer are sequentially from the bottom layer to the top layer, and the roller press Provided in the first layer, the steady flow chamber is disposed on the second layer, the wind classification system is disposed on the third layer, the power screening system is disposed on the fourth layer, and the dry wind magnetic separation system is disposed at First, second and third floors.
  • the crushed coarse ore first enters the wind classification system located in the third layer, the wind classification system classifies the coarse ore, and selects the fine ore corresponding to the particle size requirement to be sent to the fourth layer.
  • the power screening system the coarse ore that does not meet the particle size requirement is fed into the steady flow bin located in the second layer, and then collected and controlled by the steady flow bin to be fed into the roller press located in the first layer, the roller
  • the crushing machine grinds the coarse ore, and the crushed coarse ore is sent to the wind classification system for classification; the dynamic screening system sieves the fine ore to select the particle size.
  • the required ultrafine ore is fed into the first, second and third layers of the dry wind magnetic separation system for magnetic separation, and the above steps are repeated.
  • the embodiment saves the land occupation, and the production system of the processing capacity of 80-90 h/t occupies 1000 square meters, the transmission distance is 100 meters, the electric power consumption is 15 degrees per hour, and the magnetite taste reaches 60-65%.
  • a mine selection system includes a roller press, a steady flow bin, a wind classification system, a power screening system, and a dry wind magnetic separation system, wherein the mine selection system is vertically arranged;
  • the roller press, the steady flow bin, the wind classification system, the power screening system, and the dry wind magnetic separation system are disposed in three layers in the longitudinal direction, the roller press is disposed on the bottom layer, and the steady flow chamber is disposed on the intermediate layer.
  • the wind classification system and the power screening system are disposed on the top layer, the dry wind magnetic separation system is disposed on the intermediate layer and the bottom layer; the dry wind magnetic separation system includes a transition chamber and a dry wind magnetic separation unit, The transition chamber is located in the middle layer, and the dry wind magnetic separation unit is disposed on the bottom layer.
  • the present mining system also includes a dust collection system coupled to the power screening system and the dry wind magnetic separation unit.
  • the crushed coarse ore first enters the wind grading system at the top layer, which classifies the coarse ore and selects the fine ore that meets the particle size requirements and feeds it into the dynamic screening system at the top layer.
  • the coarse ore which does not meet the particle size requirement is fed into the steady flow bin located in the intermediate layer, and then collected and controlled by the steady flow bin to be fed into the roller press located at the bottom layer, and the roller press rolls the coarse ore Pressing and crushing, the coarse ore after rolling and grinding is sent to the wind classification system for classification; the dynamic screening system screens the fine ore and selects the ultrafine ore which meets the particle size requirement to be fed.
  • the transition chamber collects and controls the ultrafine ore and feeds the ultrafine mine into the dry wind magnetic separation unit located in the bottom layer for magnetic separation, and repeats the above steps.
  • This embodiment occupies a small area and compares the production scale of 70 tons per hour.
  • the prior art occupies an area of about 6,000 square meters, and this embodiment covers only 1200 square meters, and the floor area is reduced by 80%.
  • the transmission distance of the material in the prior art is short, and the transmission distance of the material in the prior art is about 600 meters, and the transmission distance of the material in the embodiment is 100 meters, and the transmission distance is reduced by 83%; the energy consumption is low, and the processing is the same, the prior art is compared. 23 kWh is required, and this embodiment is 14 kWh, saving 39%; magnetite grade is 63%;
  • the circumference can be adjusted.
  • the particle size of the finished product selected in this embodiment can be adjusted according to the actual production demand of the user. The adjustment range is wide, and the particle size of the finished product can be adjusted: -200 mesh accounts for 55-95%.
  • the output of this embodiment is high, and the comparison is calculated according to the production scale of 70t/h.
  • the output of the prior art is 70 tons, and the output of the embodiment can reach 85-95 tons, and the output is increased by 20% to 40%;
  • the efficiency of grinding and beneficiation is simultaneously increased by 20% to 50%.
  • the dust content of air emission is less than 20mg/Nm3, which is better than the environmental requirements of dust emission requirements of national standards and not more than 30mg/Nm3, and no air pollution.
  • the long service life of the equipment can reach more than 15,000 hours, which is 20 ⁇ 30% longer than the service life of the equipment in the prior art.
  • the mine selection system of the present embodiment reduces the cost, and the existing mine selection system needs to establish a tailings dam to treat the waste water and waste generated after the magnetic separation, and the mine selection system only needs the dust collection system to produce the dried Dust collection and backfilling can solve the problem of waste.
  • the input cost of the existing technology on the tailings dam is about 10,000 yuan, and the maintenance cost in the later period is also very high, which requires about 10,000 yuan per year;
  • the invention does not need to build a tailings dam, and only needs to backfill the collected tail powder. Therefore, it only needs about 10,000 yuan in the treatment of the tailings, which can save expenditures of ⁇ and 10,000 yuan.
  • the invention reduces the personnel demand, and at the same time reduces the quality requirements of the personnel; it is convenient for the inspection personnel to troubleshoot.
  • a mine selection system includes a roller press, a steady flow bin, a wind classification system, a power screening system, and a dry wind magnetic separation system, wherein the mining system is vertically arranged;
  • the roller press, the steady flow bin, the wind classification system, the power screening system, and the dry wind magnetic separation system are disposed in five layers in the longitudinal direction, the roller press is disposed on the bottom layer, and the steady flow chamber is disposed on the second layer
  • the wind classification system is disposed on the third layer
  • the power screening system is disposed on the top layer
  • the dry wind magnetic separation system includes a transition chamber and a dry wind magnetic separation unit, and the transition chamber is located on the fourth floor.
  • the dry wind magnetic separation unit is two sets or one or more sets arranged longitudinally, and the dry type wind magnetic separation unit is disposed in the second layer and the third layer or in the first, second and a three-layer; the roller press is connected to the steady flow chamber, the steady flow chamber is connected to the wind classification system, the wind classification system is connected to the power screening system, and the dry wind magnetic separation The unit is coupled to the transition chamber, and the power screening system is coupled to the steady flow chamber.
  • the present mining system also includes a dust collection system coupled to the power screening system and the dry wind magnetic separation unit via a conduit.
  • the crushed coarse ore is first fed into a third-level wind classification system, which classifies the coarse ore and selects the fine ore that meets the particle size requirements and feeds it into the top-level power screen.
  • the coarse ore that does not meet the particle size requirements is fed into the steady flow bin located in the second layer, and then passed through the steady flow bin.
  • the roller press Collecting and controlling feeding into a roller press located at the bottom layer, the roller press grinds and grinds the coarse ore, and feeds the crushed coarse ore into the wind classification system for classification;
  • the power screening system sifts the fine ore, selects the ultrafine ore that meets the particle size requirement and feeds it to the next process, and the fine ore that does not meet the particle size requirement is fed to the steady flow bin, and then passes through the The collection and control of the steady flow bin are fed into the roller press, the roller press performs roll crushing on the fine ore, and the finely mined ore after grinding is fed into the wind turbine system for classification.
  • the ultrafine ore that meets the particle size requirements selected by the dynamic screening system is fed into the transition chamber located in the fourth layer, and the ultra-fine mine is fed into the second and the second through the collection and control of the transition chamber.
  • the magnetic separation is sequentially performed in two or more sets of dry wind magnetic separation units of three layers or the first, second and third layers; the above steps are repeated.
  • This embodiment occupies a small area and compares the production scale of 70 tons per hour.
  • the prior art occupies an area of about 6,000 square meters, and this embodiment covers only 1200 square meters, and the floor area is reduced by 80%.
  • the transmission distance of the material in the prior art is about 600 meters, and the transmission distance of the material in the embodiment is 110 meters, and the transmission distance is reduced by 82%; the energy consumption is low, and the processing is the same, the prior art is compared. 23 degrees of electricity is required, and in this embodiment, the power is 15 degrees, the power saving is 35%; the magnetite grade is 65%; the size range of the finished product can be adjusted, and the granularity of the finished product selected in this embodiment can be adjusted according to the actual production demand of the user. The adjustment range is wide, and the finished product particle size can be adjusted: -200 mesh accounts for 55-95%.
  • the output of this embodiment is high, and the comparison is calculated according to the production scale of 70t/h.
  • the output of the prior art is 70 tons, and the output of the embodiment can reach 85-95 tons, and the output is increased by 20% to 40%;
  • the efficiency of grinding and beneficiation is simultaneously increased by 20% to 50%.
  • the dust content of air emission is less than 20mg/Nm3, which is better than the environmental requirements of dust emission requirements of national standards and not more than 30mg/Nm3, and no air pollution.
  • the long service life of the equipment can reach more than 15,000 hours, which is 20 ⁇ 30% longer than the service life of the equipment in the prior art.
  • the mine selection system of the present embodiment reduces the cost, and the existing mine selection system needs to establish a tailings dam to treat the waste water and waste generated after the magnetic separation, and the mine selection system only needs the dust collection system to produce the dried Dust collection and backfilling can solve the problem of waste.
  • the input cost of the existing technology on the tailings dam is about 10,000 yuan, and the maintenance cost in the later period is also very high, which requires about 10,000 yuan per year;
  • the invention does not need to build a tailings dam, and only needs to backfill the collected tail powder. Therefore, it only needs about 10,000 yuan in the treatment of the tailings, which can save expenditures of ⁇ and 10,000 yuan.
  • the invention reduces the personnel demand, and at the same time reduces the quality requirements of the personnel; it is beneficial for the inspection personnel to exclude barrier.
  • a mine selection system includes a roller press, a steady flow bin, a wind classification system, a power screening system, and a dry wind magnetic separation system, wherein the mine selection system is longitudinal Arrangement; roller press, steady flow bin, wind classification system, power screening system and dry wind magnetic separation system are arranged in four layers in the longitudinal direction, and from the bottom layer to the top layer, the first layer to the fourth layer, the roller The press is disposed on the first layer, the steady flow chamber is disposed on the second layer, the wind classification system is disposed on the third layer, the power screening system is disposed on the fourth layer, and the dry wind magnetic separation system
  • the utility model comprises a transition chamber and a dry wind magnetic separation unit, wherein the transition chamber is located at a third floor, the dry wind magnetic separation unit is two sets or a raft sleeve arranged longitudinally, and the dry wind magnetic separation unit can be separately set In the first layer and the second layer (Fig.
  • the roller press is connected to the steady flow chamber, the steady flow chamber and the A wind classification system is connected, the wind classification system is connected to the power screening system, the dry wind magnetic separation unit and the a transition chamber connected, the power screening system being coupled to the steady flow chamber; the mining system further comprising a hoist; the outlet of the hoist being connected to the wind grading system, the inlet and the hoist
  • the roller press is connected.
  • the present mining system also includes a dust collection system coupled to the power screening system and the dry wind magnetic separation unit via a conduit.
  • the crushed coarse ore is lifted by a hoist and then fed into a third-level wind classification system, which classifies the coarse ore and selects a fine ore that meets the particle size requirements.
  • the coarse ore that does not meet the particle size requirements is fed into the steady flow bin located in the second layer, and then collected and controlled by the steady flow bin to feed the rolling pressure on the first layer.
  • the rolling mill performs rolling and grinding on the coarse ore, and the coarse ore after the rolling and grinding is sent to the hoist again, and the hoist lifts and feeds the coarse ore after the rolling and grinding.
  • the dynamic screening system sifts the fine ore, selects the ultrafine ore that meets the particle size requirement, and sends it to the next process, and the fine ore that does not meet the particle size requirement is fed.
  • the roller press grinds the fine ore, and crushes the fine after rolling
  • the ore is fed into the hoist, the hoist lifts the finely ground finely ground and rolls it into the wind again
  • the fan system is graded, and the ultrafine ore that meets the particle size requirements selected by the dynamic screening system is fed into the transition chamber located in the third layer, and the superfine ore is fed sequentially through the collection and control of the transition chamber.
  • the magnetic separation is performed in a dry wind magnetic separation unit located in the second layer and the first layer, and the above steps are repeated.
  • This embodiment occupies a small area and compares the production scale of 70 tons per hour.
  • the prior art occupies an area of about 6,000 square meters, and this embodiment covers only 1200 square meters, and the floor area is reduced by 80%.
  • Transmission The distance is short, the transmission distance of the materials in the prior art is about 600 meters, and the transmission distance of the material in the embodiment is 100 meters, the transmission distance is reduced by 83%; the energy consumption is low, and the processing is the same, the prior art requires 23 Power, while this embodiment is 14 degrees, saving 39%; magnetite grade reaches 64%; the finished product size range can be adjusted, the finished product size selected in this embodiment can be adjusted according to the actual production needs of the user, the adjustment range Wide, finished particle size adjustable range: -200 mesh accounted for 55 to 95%.
  • the output of this embodiment is high, and the comparison is calculated according to the production scale of 70t/h.
  • the output of the prior art is 70 tons, and the output of the embodiment can reach 85-95 tons, and the output is increased by 20% to 40%;
  • the efficiency of grinding and beneficiation is simultaneously increased by 20% to 50%.
  • the dust content of air emission is less than 20mg/Nm3, which is better than the environmental requirements of dust emission requirements of national standards and not more than 30mg/Nm3, and no air pollution.
  • the long service life of the equipment can reach more than 15,000 hours, which is 20 ⁇ 30% longer than the service life of the equipment in the prior art.
  • the mine selection system of the present embodiment reduces the cost, and the existing mine selection system needs to establish a tailings dam to treat the waste water and waste generated after the magnetic separation, and the mine selection system only needs the dust collection system to produce the dried Dust collection and backfilling can solve the problem of waste.
  • the input cost of the existing technology on the tailings dam is about 10,000 yuan, and the maintenance cost in the later period is also very high, which requires about 10,000 yuan per year;
  • the invention does not need to build a tailings dam, and only needs to backfill the collected tail powder. Therefore, it only needs about 10,000 yuan in the treatment of the tailings, which can save expenditures of ⁇ and 10,000 yuan.
  • the invention reduces the personnel demand, and at the same time reduces the quality requirements of the personnel; it is convenient for the inspection personnel to troubleshoot.

Abstract

一种矿选系统，包括辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统，矿选系统为纵向布置。矿选系统节省了占地面积，在物料流通时无需使用皮带输送机进行输送，节省了巨大的成本和能耗；而且在矿选过程中无需用水，节省了水资源，能够应用在缺乏水资源的地方。

Description

一种矿选系统 技术领域：
本发明涉及一种矿选系统，尤其涉及一种用于黑色金属和有色金属的矿选系统。
背景技术：
目前成熟的磁铁矿选铁技术是干式破碎+湿式磨矿+湿式选矿(如图1所示)，所以占地面积非常大，设备的土建基础也非常复杂，建设难度大；现有的矿选技术需要大量用水进行磨矿以及湿式磁选，所以水消耗量大，同时尾排水造成水污染。
中国专利CN102489373B中公开了一种铁矿石加工选矿工艺，大致为以下步骤：1、将原矿破碎成粒度＜30mm的粗矿，粗矿由第一皮带输送机送入提升机中；2、提升机将矿石提升到高出的第二皮带输送机上，由第二皮带输送机喂入无动力风选机中进行风选，粒度＞1.5mm的粗矿通过稳流仓进入辊压机辊压后形成的料饼与从第一皮带输送机送入的粗矿混合后再次提升由第二皮带输送机喂入无动力风选机中进行无动力风选；3、粒度≤1.5mm的细矿粉送入动力风选机中进行风选，选出粒度＜0.2mm的超细粉直接进入旋风收尘器，未选走的粗料送入磁性选粉机中选出精铁粉，脉石矿物作为尾矿排出；4、旋风收尘器将粒度＜0.04的微分选出，未选走的细料送入磁性选粉机选出精铁粉，脉石矿物作为尾矿排出，微粉进入袋收尘器或电收尘器中进行收集；5、收集的部分送入磁性选粉机选出精铁粉，脉石矿物作为尾矿排出。本领域普通技术人员根据此上述专利文献设计出了如图2、图3和图4所示的磨矿系统。但是，根据该专利文献做出的生产系统中仍普遍存在以下问题：
1.占地面积大，按小时处理量70吨的生产规模计算，需占地5000平方米，物料的传输距离为600米。
2.由于物料的输送受皮带机的爬升角的限制，若要实现将物料输送到一下台磁选机的入料口，则皮带机的最短长度应不小于L(计算公式：L＝h/tan(α)，其中：h为磁选机入料口的最低高度，α为皮带机的最大倾斜角)；同时当磁选机的数量越多，所需要的皮带机就越多，皮带机的安装地盘就越大，皮带的耗费就越大。
3.按小时处理量70吨的生产线计算，附图2、附图3、附图4三种方案所需 皮带机的数量分别是至少11台、9台、17台，皮带的耗费按处理80万吨总量计算，则分别需要30套、32套、28套皮带。而在使用中，一般工作情况下皮带的使用寿命约6～12个月，所以每6～12个月就要整体更换一次皮带，耗费了巨大的成本。按小时处理量70吨的生产规模计算，每小时会耗费23度电，能耗大。
4.选出的磁铁矿品位低，产量低。按现有技术的干式磁选机考虑，当入选物料中铁的品位为10％～15％，经一次磁选选出的精粉品位在30％左右；当入选物料中铁的品位为25％～30％，经一次磁选选出的精粉品位在40％左右；产量在40吨左右；另一方面，当一次磁选选出的精粉品位低时，本领域普通技术人员会想到增加磁选机数量来提高品位，虽然增加磁选次数可提高精粉的品位，但现有技术的干式磁选机经多次磁选选出的精粉品位最好的记录是45～50％，小于国家标准规定的销售品位：铁精粉≥58％(现有技术的湿式磁选机能达到60％以上的品位)；如果考虑增加磁选机数量，则需同时增加喂料输送皮带机，磁选机和皮带机的增加，都将增加占地面积，同时还会增加能耗和皮带的耗费。
5.对环境污染严重。出现大量冒灰现象造成空气污染。
发明内容：
本发明的目的在于提供一种用于黑色金属和有色金属的矿选系统。
为了实现上述目的，本发明是这样实现的：
一种矿选系统，包括辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统，所述矿选系统为纵向布置。所述矿选系统节省了占地面积，在物料流通时无需使用皮带输送机进行输送，节省了巨大的成本和能耗；而且在矿选过程中无需用水，节省了水资源，能够应用在缺乏水资源的地方。
为了进一步优化矿选系统的结构，所述干式磁选系统位于动力筛分系统的下方。符合粒径要求的细粉能够通过更顺畅地进入所述干式风磁选系统中进行磁选，无需使用皮带输送机进行输送，节省了成本和能耗，优化了整个矿选系统的结构。
为了进一步对所述磨矿系统合理布局，辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统在纵向上设置为三层、四层或五层；辊压机位于底层、动力筛分系统位于顶层、稳流仓位于中间层。本发明具创造性的将矿选系统设计为“楼房”式的布置，能够最大程度地节省所述矿选系统的占地面积以及减少土建基础的投资成本和建设费用；而且利于物料的自然流动，节省了物料在运输过程中所耗费的能量和材料；另外，在矿选过程中无需用水，节省了水资源， 避免了废水对环境的污染，能够应用到缺乏水资源的地方。
优选地，辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统在纵向上设置为四层，从底层到顶层依次为第一层到第四层，所述辊压机设置于第一层，所述稳流仓设置于第二层，所述风力分级系统设置于第三层，所述动力筛分系统设置于第四层，所述干式风磁选系统设置在第一、二和三层。所述矿选系统占地面积极小且极利于物料的流动，节省了传输距离减少了传输能耗，而且提高了整个磨矿系统的效率。
优选地，辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统在纵向上设置为三层，所述辊压机设置于底层、所述稳流仓设置于中间层，所述风力分级系统和动力筛分系统设置于顶层，所述干式风磁选系统设置于中间层和/或底层。风力分级系统处理物料时的主要动力是风力，分选能量损失小，分选效率高。
优选地，辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统在纵向上设置为三层，所述辊压机设置于底层、所述稳流仓设置于中间层、所述动力筛分系统设置于顶层，所述风力分级系统设置于底层，所述干式风磁选系统设置于底层和中间层。便于巡检观察，维修及检查方便。
优选地，辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统在纵向上设置为五层，从底层到顶层依次为第一层到第四层，所述辊压机设置于底层、所述稳流仓设置于第二层、所述动力筛分系统设置于顶层，所述风力分级系统设置于第三层，所述干式风磁选系统设置于底层、第二层和第三层，或者设置于第二、第三、第四层。当原矿品位非常低时，比如品位在10％以下的原矿，在占地面积不变下，能达到精粉的品位大于60％；且为优化干式风磁选系统的组件和布置提供空间。
为了进一步使得所述干式风磁选系统能够稳定连续地运转，所述干式风磁选系统包括过渡仓和干式风磁选机组。提高了磁选的效率和稳定性。
优选地，所述过渡仓位于所述动力筛分系统的下层，所述干式风磁选机组位于所述过渡仓的下层。这整个矿选系统布局更优化，节省占地，且物料能够更顺畅的流动。
为了进一步提高选出的磁铁矿的品位，所述干式风磁选机组为单套或多套。进一步提高了选出的磁铁矿的品位。优选地，上述多套干式风磁选机组为纵向布置。不仅进一步节省占地面积，而且更适合物料的流动，节省能耗，提高品位、 产量。
上述辊压机和所述稳流仓相连，所述稳流仓和所述风力分级系统相连，所述风力分级系统和所述动力筛分系统相连，所述动力筛分系统和所述干式风磁选系统相连。
为了进一步提高所述磨矿系统的产量，所述动力筛分系统和所述稳流仓相连。进一步提高了所述磨矿系统的品位和产量。
优选地，所述过渡仓的入口和所述动力筛分系统相连，所述过渡仓的出口和所述干式风磁选系统相连。
为了进一步减少能耗，所述矿选系统还包括提升机；所述提升机与所述风力分级系统和所述辊压机相连，或/和所述提升机与所述风力分级系统和所述稳流仓相连。不仅能够轻易地将破碎后的粗矿送入所述风力分级系统中进行分选，而且减少能耗，并大大提高分选效率。
为了进一步避免空气污染，所述磁选系统还包括收尘系统，所述收尘系统与所述动力筛分系统相连。为了进一步避免空气污染，所述收尘系统和所述干式风磁选系统(机组)相连。所述收尘系统对在矿选中产生的粉尘进行收集处理，避免了粉尘排入空气中对环境造成污染。
上述装置之间的相连是通过管道、溜槽、非标溜子或钢板管道、非标溜子等方式相连。进一步减少能量和设备(如皮带)的消耗，节省成本，并避免空气污染。
在矿选过程中，经过破碎的粗矿首先进入所述风力分级系统，所述风力分级系统对粗矿进行分级，选出符合粒径要求的细矿送入所述动力筛分系统，不符合粒径要求的粗矿喂入所述稳流仓，再通过所述稳流仓的收集及控制送入所述辊压机中，所述辊压机对粗矿进行辊压磨碎，将辊压磨碎后的粗矿再次送入所述风力分级系统中进行分级；所述动力筛分系统对细矿进行筛分，选出符合粒径要求的超细矿送入下一道工序，而不符合粒径要求的细矿被喂入到所述稳流仓，再通过所述稳流从的收集及控制送入所述辊压机中，所述辊压机对细矿进行辊压磨碎，将辊压磨碎后的粗矿再次送入所述风力风机系统中进行分级，重复上述步骤；而经过动力筛分系统筛选出来的符合粒径要求的超细矿被喂入所述干式风磁选系统进行磁选。
有益效果：
1.本发明的矿选系统利用空间资源，极大的优化了系统的整体构造，不仅物料流 动更加顺畅，而且节省了占地，按小时处理量70吨的生产规模进行比较，现有技术占地约6000平方米，而本发明占地只需1000-1200平方米；同时也减少了各装置间物料的传输距离，现有技术中物料的传输距离约600米，而本发明物料的传输距离只有100-110米；减少了能耗，按处理量相同进行比较，现有技术需要23度电/h，而本发明只需14-15度电/h；提高了整个矿选系统的效率，同时整个系统不用水，节约了设备成本和水资源。
2.本发明的矿选系统磁选效果好，一方面，使用本发明的矿选系统能够使选出的磁铁矿品位达到60％-65％；另一方面，本矿选系统选出的成品粒度可根据用户需要进行调节，调节范围宽，成品粒度可调节范围：-200目占55～95％；。
3.本发明减少人员需求，同时对人员的素质要求也降低了；有利于巡检人员排除故障。
4.本发明的矿选系统效率高、产量高。矿石经本发明矿选系统处理后，矿物颗粒按结晶体形成面自然解离磨碎，金属矿物解离完全；产品的微观颗粒形状偏片状和针状，有利于球团成形，提高球团效率30％，有益于提高磁选效率；磨矿的产量可提高20～50％、效率提高20～30％。
5.本发明的矿选系统综合能耗低，本矿选系统在工作过程中的能耗低于中华人民共和国黑色冶金行业标准——《矿山企业采矿生产能耗定额标准第2部分：铁矿石选矿YB/T4417.2-2014》中规定的磁选流程、浮选流程的单位原矿选矿综合能耗的一级标准30％。
6.由于本矿选系统的物料流通方式和收尘系统，极大的减少了矿选过程中对环境造成的污染，空气排放的粉尘含量小于20mg/Nm3，优于国家标准规定的粉尘排放要求不大于30mg/Nm3的环保要求，无大气污染。
7.本系统磨矿、分级、筛分和磁选过程物料流动顺畅，不会出现物料淤积堵塞现象，不仅保证了产品的品质，同时提高设备的使用效率和使用寿命，降低维修成本。
8.本发明的矿选系统降低了投资成本，现有的矿选系统需要建立尾矿坝来处理磁选后产生的废水和废料，而本矿选系统只需收尘系统将其产生的干式粉尘进行收集并回填就能解决废料的问题。按日处理量1700吨的生产规模进行比较，现有技术在尾矿坝上的投入成本约陆仟万元，而后期的维护成本也非常高，每年需要约贰仟伍佰万元的费用；而本发明不需要建尾矿坝，只需将收集的尾粉进行回填，因此在尾矿的处理上只需要约壹佰万元即可，可节约支出柒、捌仟万元。
9.本发明的矿选系统选出的精粉，由于精粉的微观颗粒形状有益于球团成形，提高球团效率，降低球团厂的运营成本，提高球团厂的效益。
附图说明：
图1是现有技术的矿选系统的结构图；
图2是本领域普通技术人员根据背景技术设计的矿选系统1；
图3是本领域普通技术人员根据背景技术设计的矿选系统2；
图4是本领域普通技术人员根据背景技术设计的矿选系统3；
图5是实施例2的结构图；
图6是实施例3的结构图；
图7是实施例4的结构图；
图8是实施例5的结构图；
图9是实施例5的结构图。
具体实施方式：
下面将通过附图中所示的实施例来介绍本发明，但本发明并不局限于所介绍的实施方式，任何在本实施例基本精神上的改进或替代，仍属于本发明权利要求所要求保护的范围：
实施例1：一种矿选系统，包括辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统，所述矿选系统为纵向布置。
在磁选的过程中，经过破碎的粗矿首先进入所述风力分级系统，所述风力分级系统对粗矿进行分级，选出符合粒径要求的细矿送入所述动力筛分系统，不符合粒径要求的粗矿喂入所述稳流仓，再通过所述稳流仓的收集及控制送入所述辊压机中，所述辊压机对粗矿进行辊压磨碎，将辊压磨碎后的粗矿再次送入所述风力分级系统中进行分级；所述动力筛分系统对细矿进行筛分，选出符合粒径要求的超细矿被喂入所述干式风磁选系统进行磁选，重复上述步骤。
本系统无需使用水资源，而且能够节省占地。
实施例2：如图5所示，一种矿选系统，包括辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统，所述矿选系统为纵向布置；辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统在纵向上设置为四层，从底层到顶层依次为第一层到第四层，所述辊压机设置于第一层，所述稳流仓设置于第二层，所述风力分级系统设置于第三层，所述动力筛分系统设置于第四层，所述干式风磁选系统设置在第一、二和三层。
在磁选的过程中，经过破碎的粗矿首先进入位于第三层的风力分级系统，所述风力分级系统对粗矿进行分级，选出符合粒径要求的细矿送入位于第四层的动力筛分系统，不符合粒径要求的粗矿喂入位于第二层的稳流仓，再通过所述稳流仓的收集及控制送入位于第一层的辊压机中，所述辊压机对粗矿进行辊压磨碎，将辊压磨碎后的粗矿再次送入所述风力分级系统中进行分级；所述动力筛分系统对细矿进行筛分，选出符合粒径要求的超细矿送入位于第一、二和三层的干式风磁选系统进行磁选，重复上述步骤。
本实施例节省占地，80-90h/t的处理量的生产系统占地1000平方米，传输距离100米，每小时耗电15度，磁铁矿品味达到60-65％。
实施例3：如图6所示，一种矿选系统，包括辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统，所述矿选系统为纵向布置；辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统在纵向上设置为三层，所述辊压机设置于底层、所述稳流仓设置于中间层，所述风力分级系统和动力筛分系统设置于顶层，所述干式风磁选系统设置于中间层和底层；所述干式风磁选系统包括过渡仓和干式风磁选机组，所述过渡仓位于中间层，所述干式风磁选机组设置在底层。本矿选系统还包括收尘系统，所述收尘系统与所述动力筛分系统和所述干式风磁选机组相连。
在磁选的过程中，经过破碎的粗矿首先进入位于顶层的风力分级系统，所述风力分级系统对粗矿进行分级，选出符合粒径要求的细矿送入位于顶层的动力筛分系统，不符合粒径要求的粗矿喂入位于中间层的稳流仓，再通过所述稳流仓的收集及控制送入位于底层的辊压机中，所述辊压机对粗矿进行辊压磨碎，将辊压磨碎后的粗矿再次送入所述风力分级系统中进行分级；所述动力筛分系统对细矿进行筛分，选出符合粒径要求的超细矿被喂入位于中间层的过渡仓中，所述过渡仓对超细矿进行收集和控制并将超细矿喂入位于底层的干式风磁选机组中进行磁选，重复上述步骤。
本实施例实施效果：
1.本实施例占地小，按小时处理量70吨的生产规模进行比较，现有技术占地约6000平方米，而本实施例占地只有1200平方米，占地减少80％；装置间的传输距离短，现有技术中物料的传输距离约600米，而本实施例物料的传输距离为100米，传输距离减少了83％；能耗低，按处理量相同进行比较，现有技术需要23度电，而本实施例为14度电，节电39％；磁铁矿品位达到63％；成品粒度范 围可调节，本实施例选出的成品粒度可根据用户实际生产需求进行调节，调节范围宽，成品粒度可调节范围：-200目占55～95％。
2.本实施例产量高，按70t/h的生产规模进行对比计算，现有技术的产量为70吨，而本实施例的产量可达到85～95吨，产量提高了20％～40％；另一方面，与现有技术相比，磨矿及选矿的效率同时提高了20％～50％。
3.空气排放的粉尘含量小于20mg/Nm3，优于国家标准规定的粉尘排放要求不大于30mg/Nm3的环保要求，无大气污染。
4.设备的使用寿命长，可达到15000小时以上，比现有技术中的设备使用寿命长20～30％。
5.本实施例的矿选系统降低了成本，现有的矿选系统需要建立尾矿坝来处理磁选后产生的废水和废料，而本矿选系统只需收尘系统将其产生的干式粉尘进行收集并回填就能解决废料的问题。按日处理量1700吨的生产规模进行比较，现有技术在尾矿坝上的投入成本约陆仟万元，而后期的维护成本也非常高，每年需要约贰仟伍佰万元的费用；而本发明不需要建尾矿坝，只需将收集的尾粉进行回填，因此在尾矿的处理上只需要约壹佰万元即可，可节约支出柒、捌仟万元。
6.本发明减少人员需求，同时对人员的素质要求也降低了；利于巡检人员排除故障。
实施例4：如图7所示，一种矿选系统，包括辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统，所述矿选系统为纵向布置；辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统在纵向上设置为五层，所述辊压机设置于底层、所述稳流仓设置于第二层、所述风力分级系统设置于第三层、所述动力筛分系统设置于顶层，所述干式风磁选系统包括过渡仓和干式风磁选机组，所述过渡仓位于第四层，所述干式风磁选机组为纵向设置的两套或叁套或更多套，且所述干式风磁选机组设置在第二层和第三层或者设置在第一、第二和第三层；所述辊压机和所述稳流仓相连，所述稳流仓和所述风力分级系统相连，所述风力分级系统和所述动力筛分系统相连，所述干式风磁选机组和所述过渡仓相连，所述动力筛分系统和所述稳流仓相连。本矿选系统还包括收尘系统，所述收尘系统通过管道与所述动力筛分系统和所述干式风磁选机组相连。
在磁选的过程中，经过破碎的粗矿首先喂入第三层的风力分级系统，所述风力分级系统对粗矿进行分级，选出符合粒径要求的细矿送入位于顶层的动力筛分系统，不符合粒径要求的粗矿喂入位于第二层的稳流仓，再经过所述稳流仓的收 集及控制喂入位于底层的辊压机中，所述辊压机对粗矿进行辊压磨碎，将辊压磨碎后的粗矿再次喂入所述风力分级系统中进行分级；所述动力筛分系统对细矿进行筛分，选出符合粒径要求的超细矿送入下一道工序，而不符合粒径要求的细矿被喂入到所述稳流仓，再经过所述稳流仓的收集及控制喂入所述辊压机中，所述辊压机对细矿进行辊压磨碎，将辊压磨碎后的细矿再次送入所述风力风机系统中进行分级；而经过动力筛分系统筛选出来的符合粒径要求的超细矿被喂入位于第四层的过渡仓中，经过所述过渡仓的收集和控制将超细矿喂入位于第二、第三层或第一、第二、第三层的两套或多套干式风磁选机组中依次进行磁选；重复上述步骤。
本实施例实施效果：
1.本实施例占地小，按小时处理量70吨的生产规模进行比较，现有技术占地约6000平方米，而本实施例占地只有1200平方米，占地减少80％；装置间的传输距离短，现有技术中物料的传输距离约600米，而本实施例物料的传输距离为110米，传输距离减少了82％；能耗低，按处理量相同进行比较，现有技术需要23度电，而本实施例为15度电，节电35％；磁铁矿品位达到65％；成品粒度范围可调节，本实施例选出的成品粒度可根据用户实际生产需求进行调节，调节范围宽，成品粒度可调节范围：-200目占55～95％。
2.本实施例产量高，按70t/h的生产规模进行对比计算，现有技术的产量为70吨，而本实施例的产量可达到85～95吨，产量提高了20％～40％；另一方面，与现有技术相比，磨矿及选矿的效率同时提高了20％～50％。
3.空气排放的粉尘含量小于20mg/Nm3，优于国家标准规定的粉尘排放要求不大于30mg/Nm3的环保要求，无大气污染。
4.设备的使用寿命长，可达到15000小时以上，比现有技术中的设备使用寿命长20～30％。
5.本实施例的矿选系统降低了成本，现有的矿选系统需要建立尾矿坝来处理磁选后产生的废水和废料，而本矿选系统只需收尘系统将其产生的干式粉尘进行收集并回填就能解决废料的问题。按日处理量1700吨的生产规模进行比较，现有技术在尾矿坝上的投入成本约陆仟万元，而后期的维护成本也非常高，每年需要约贰仟伍佰万元的费用；而本发明不需要建尾矿坝，只需将收集的尾粉进行回填，因此在尾矿的处理上只需要约壹佰万元即可，可节约支出柒、捌仟万元。
6.本发明减少人员需求，同时对人员的素质要求也降低了；利于巡检人员排除故 障。
实施例5：如图8、9所示，一种矿选系统，包括辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统，所述矿选系统为纵向布置；辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统在纵向上设置为四层，从底层到顶层依次为第一层到第四层，所述辊压机设置于第一层，所述稳流仓设置于第二层，所述风力分级系统设置于第三层，所述动力筛分系统设置于第四层，所述干式风磁选系统包括过渡仓和干式风磁选机组，所述过渡仓位于第三层，所述干式风磁选机组为纵向设置的两套或叁套，且所述干式风磁选机组可分别设置在第一层和第二层(图8)，也可上下叠加组合后设置在第一层(图9)；所述辊压机和所述稳流仓相连，所述稳流仓和所述风力分级系统相连，所述风力分级系统和所述动力筛分系统相连，所述干式风磁选机组和所述过渡仓相连，所述动力筛分系统和所述稳流仓相连；所述矿选系统还包括提升机；所述提升机的出口和所述风力分级系统相连，所述提升机的入口和所述辊压机相连。本矿选系统还包括收尘系统，所述收尘系统通过管道与所述动力筛分系统和所述干式风磁选机组相连。
在磁选的过程中，经过破碎的粗矿经提升机提升，然后喂入位于第三层的风力分级系统，所述风力分级系统对粗矿进行分级，选出符合粒径要求的细矿送入位于第四层的动力筛分系统，不符合粒径要求的粗矿喂入位于第二层的稳流仓，再经过所述稳流仓的收集及控制喂入位于第一层的辊压机中，所述辊压机对粗矿进行辊压磨碎，将辊压磨碎后的粗矿再次送入所述提升机，所述提升机将辊压磨碎后的粗矿提升并喂入所述风力分级系统中进行分级；所述动力筛分系统对细矿进行筛分，选出符合粒径要求的超细矿送入下一道工序，而不符合粒径要求的细矿被喂入到所述稳流仓，再经过所述稳流从的收集及控制喂入所述辊压机中，所述辊压机对细矿进行辊压磨碎，将辊压磨碎后的细矿送入所述提升机，所述提升机将辊压磨碎后的细矿提升并再次送入所述风力风机系统中进行分级，而经过动力筛分系统筛选出来的符合粒径要求的超细矿被喂入位于第三层的过渡仓中，经过所述过渡仓的收集和控制将超细矿依次喂入位于第二层和第一层的干式风磁选机组中进行磁选，重复上述步骤。
本实施例实施效果：
1.本实施例占地小，按小时处理量70吨的生产规模进行比较，现有技术占地约6000平方米，而本实施例占地只有1200平方米，占地减少80％；装置间的传输 距离短，现有技术中物料的传输距离约600米，而本实施例物料的传输距离为100米，传输距离减少了83％；能耗低，按处理量相同进行比较，现有技术需要23度电，而本实施例为14度电，节电39％；磁铁矿品位达到64％；成品粒度范围可调节，本实施例选出的成品粒度可根据用户实际生产需求进行调节，调节范围宽，成品粒度可调节范围：-200目占55～95％。
2.本实施例产量高，按70t/h的生产规模进行对比计算，现有技术的产量为70吨，而本实施例的产量可达到85～95吨，产量提高了20％～40％；另一方面，与现有技术相比，磨矿及选矿的效率同时提高了20％～50％。
3.空气排放的粉尘含量小于20mg/Nm3，优于国家标准规定的粉尘排放要求不大于30mg/Nm3的环保要求，无大气污染。
4.设备的使用寿命长，可达到15000小时以上，比现有技术中的设备使用寿命长20～30％。
5.本实施例的矿选系统降低了成本，现有的矿选系统需要建立尾矿坝来处理磁选后产生的废水和废料，而本矿选系统只需收尘系统将其产生的干式粉尘进行收集并回填就能解决废料的问题。按日处理量1700吨的生产规模进行比较，现有技术在尾矿坝上的投入成本约陆仟万元，而后期的维护成本也非常高，每年需要约贰仟伍佰万元的费用；而本发明不需要建尾矿坝，只需将收集的尾粉进行回填，因此在尾矿的处理上只需要约壹佰万元即可，可节约支出柒、捌仟万元。
6.本发明减少人员需求，同时对人员的素质要求也降低了；利于巡检人员排除故障。

Claims (18)

  1. 一种矿选系统，包括辊压机、稳流仓、风力分级系统、动力筛分系统和干式磁选系统，其特征在于：所述矿选系统为纵向布置。
  2. 如权利要求1所述的矿选系统，所述干式磁选系统位于动力筛分系统的下方。
  3. 如权利要求1所述矿选系统，其特征在于：辊压机、稳流仓、风力分级系统和动力筛分系统、干式磁选系统在纵向上设置为三层、四层或五层；辊压机位于底层、动力筛分系统位于顶层、稳流仓位于中间层，干式磁选系统位于中间层或底层。
  4. 如权利要求3所述的矿选系统，其特征在于：辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统在纵向上设置为四层，从底层到顶层依次为第一层到第四层，所述辊压机设置于第一层，所述稳流仓设置于第二层，所述风力分级系统设置于第三层，所述动力筛分系统设置于第四层，所述干式风磁选系统设置在第一、二和三层。
  5. 如权利要求3所述的矿选系统，其特征在于：辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统在纵向上设置为三层，所述辊压机设置于底层、所述稳流仓设置于中间层，所述风力分级系统和动力筛分系统设置于顶层，所述干式风磁选系统设置于中间层和底层。
  6. 如权利要求3所述的矿选系统，其特征在于：辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统在纵向上设置为三层，所述辊压机设置于底层、所述稳流仓设置于中间层、所述动力筛分系统设置于顶层，所述风力分级系统设置于底层，所述干式风磁选系统设置于底层和中间层。
  7. 如权利要求3所述的矿选系统，其特征在于：辊压机、稳流仓、风力分级系统、动力筛分系统和干式风磁选系统在纵向上设置为五层，从底层到顶层依次为第一层到第五层，所述辊压机设置于底层、所述稳流仓设置于第二层、所述动力筛分系统设置于顶层，所述风力分级系统设置于第三层，所述干式风磁选系统设置于底层、第二、第三层和/或第四层。
  8. 如上述任意一项权利要求所述的矿选系统，其特征在于：所述干式风磁选系统包括过渡仓和干式风磁选机组。
  9. 如权利要求8所述的矿选系统，其特征在于：所述过渡仓位于所述动力筛分系统的下层，所述干式风磁选机组位于所述过渡仓的下层。
  10. 如权利要求9或8所述的矿选系统，其特征在于：所述干式风磁选机组为单套或多套。
  11. 如权利要求10所述的矿选系统，其特征在于：多套干式风磁选机组为纵向布置。
  12. 如上述任一项权利要求所述的矿选系统，其特征在于：所述辊压机和所述稳流仓相连，所述稳流仓和所述风力分级系统相连，所述风力分级系统和所述动力筛分系统相连，所述动力筛分系统和所述干式风磁选系统相连。
  13. 如权利要求12所述的矿选系统，其特征在于：干式风磁选系统包括过渡仓和干式风磁选机组，过渡仓与干式风磁选机组相连。
  14. 如上述任一项权利要求所述的矿选系统，其特征在于：所述动力筛分系统和所述稳流仓相连。
  15. 如上述任意一项权利要求所述的矿选系统，其特征在于：所述矿选系统还包括提升机；所述提升机与所述风力分级系统和所述辊压机相连，或/和所述提升机与所述风力分级系统和所述稳流仓相连。
  16. 如上述任意一项权利要求所述的矿选系统，其特征在于：所述矿选系统还包括收尘系统，所述收尘系统与所述动力筛分系统相连。
  17. 如权利要求16所述的矿选系统，其特征在于：所述收尘系统和所述干式风磁选机组相连。
  18. 如权利要求11-17任一所述的矿选系统，其特征在于：所述相连是通过管道、溜槽、非标溜子、钢板或帆布方式相连。
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