CN103861730B - A kind of dry-and wet-type circulation magnetic selection method - Google Patents
A kind of dry-and wet-type circulation magnetic selection method Download PDFInfo
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Abstract
The invention discloses a kind of dry-and wet-type circulation magnetic selection method, dry type magnetic separation method step: a. ore grinding；B. pre-sifted；C. reduction roasting；D. feed；E. magnetic separation barrel magnetic separation is gone up；F. go up magnetic separation barrel rotation to bring down stocks；G. magnetic separation barrel magnetic separation is descended；H. descend magnetic separation barrel to rotate to bring down stocks；I. move in circles magnetic separation；J. rotary slagging coutrol.Wet-type magnetic separation method step: a. cleans remove impurity；B. pre-sifted is filtered；C. feed；D. magnetic separation barrel magnetic separation is gone up；E. go up magnetic separation barrel rotation to bring down stocks；F. magnetic separation barrel magnetic separation is descended；G. descend magnetic separation barrel to rotate to bring down stocks；H. move in circles magnetic separation；I. rotary slagging coutrol.Assembly of the invention uses unique double cylinder loop structures, when loop structure forwards diverse location under the driving of driving means, can realize fluvial sand or metallic mortar and circulate selected between two hollow cylinders.Overall process of the present invention is all automatically controlled by circuit, decreases the waste of human resources, solves the problems such as complicated, the sorting long flow path of method for separating.
Description
Technical field
The present invention relates to the magnetic selection method of a kind of ore dressing, particularly with from fluvial sand, ore pulp, from nonmetal fine particle and the mixed liquor of iron tramp or mixture, select the dry-and wet-type circulation magnetic selection method of iron ore, rejecting iron tramp.
Background technology
Magnetic separation is the main beneficiation method processing iron ore.Metallic ore especially iron ore, after ore dressing, improves grade, reduces impurity content, be of value to smelting process.According to the practice of China, iron concentrate grade often improves 1%, and the capacity factor of a blast furnace can increase by 2%～3%, and coke consumption amount can reduce by 1.5%, and consumption of limestone amount can reduce 2%.Many non-ferrous metals and the mineral of rare metals have different magnetic.When not obtaining final concentrate with gravity treatment and flotation, available magnetic separation combines additive method and sorts.
Magnetic separation is in addition to the effective grade that can improve metallic ore, moreover it is possible to rejected the harmful iron tramp in nonmetal raw material, so magnetic separation is one of operation important in nonmetal ore-dressing.Along with raising and the needs of resource regeneration of human environment protection consciousness, magnetic method is widely used in the recovery of slag and old metal and separates and during sewage disposal etc..
The most domestic occur in that dry-and wet-type magnetic separator.
Chinese patent 201287070Y discloses a kind of dry wet magnetic separator, and its composition includes that frame, crushing mechanism, magnetic separation mechanism and conveying mechanism, described frame one end are provided with feeding mouth, and the other end is provided with discharging opening；Described crushing mechanism is by fixing roller and adjustable roller forms, and the wheel shaft two ends of described fixing roller and adjustable roller rotationally support in frame；Described magnetic separation mechanism is positioned at below crushing mechanism, its interior magnetic roller set of cylinder and envelope become, uniform permanent magnets on half surface of left magnetic roller, and constituting half has the magnetic half magnetic roller without magnetic；Described conveying mechanism is material-conveying belt, is positioned at cylinder bottom.This utility model, during magnetic separation, does not completely encloses, and raw material easily causes waste and pollutes when selected and when mineral or residue flow out；And this device often add a defective material can only magnetic separation once, efficiency of magnetic separation is low.
Chinese patent 201132135Y discloses a kind of dry wet magnetic separator, the dry-wet type permanent ferromagnetism ore-separator that this utility model is made up of frame, magnetic roller, dragging roller, conveyer belt, hopper, drive mechanism, water pipe.Before upper magnetic roller, it is provided with rectangular funnel corresponding with magnetic roller size leads ore deposit plate, lead plate two, ore deposit and be movably connected in frame, lead the size scalable leading mine mouth between ore deposit plate and magnetic roller；Rectangular magnetic conductive board corresponding with magnetic roller size it is additionally provided with on lower magnetic roller, it is arranged above with several Kent adjustable magnetic plates at magnetic conductive board, on magnetic conductive board with adjustable magnetic plate, corresponding position has several circular holes, with bolt corresponding with circular hole size, adjustable magnetic plate is fixedly connected on above magnetic conductive board, magnetic conductive board two is movably connected in frame, can move left and right above magnetic conductive board left magnetic roller, forms strong, territory, weak magnetic area；Being provided with again below upper and lower magnetic roller and magnetic roll shape, the corresponding semicircle of size clean ore deposit groove, groove two, clean ore deposit is fixedly connected in frame.At this moment, water pipe supplies water, can be as wet-type everlasting strong magnetic ore separator；When clean ore deposit groove is unloaded down from frame, water pipe does not supplies water, at this moment, and can be as dry type strong magnetic ore separation machine forever.This utility model needs when dry type wet magnetic separation is changed to load and unload part, reduces efficiency of magnetic separation and can not circulate magnetic separation.
Traditional magnetic separation mode generally uses continuous multi-stage concentration equipment to carry out magnetic separation, and floor space is big, long flow path, is not easy to management, and the utilization rate of raw material is restricted by magnetic separation hop count.A kind of iron ore dry powder magnetic separation technology and the equipment announced such as Chinese patent CN101954311B just have disadvantage mentioned above.
Summary of the invention
For overcoming the defect of existing dry-and wet-type magnetic separator, it is an object of the invention to provide one and can circulate magnetic separation, improve in fluvial sand, ore pulp, the mixed liquor of nonmetal fine particle and iron tramp or the utilization rate of mixture, the circulation conduit of mineral is simply not easily blocked, and can meet a kind of dry-and wet-type circulation magnetic selection method of the sealing treatment feed of dry type and wet magnetic separation requirement, solves traditional magnetic separation mode floor space big simultaneously, long flow path, is not easy to the shortcomings such as management.
The technical scheme is that and be achieved in that:
A kind of dry-and wet-type circulation magnetic selection method, comprises the following steps:
1), ore grinding, cleaning remove impurity, if dry type mineral aggregate, should mineral aggregate be put in ball mill, be milled down to the granularity of at least 80% mineral less than 0.08mm, if wet type ore pulp, should first be carried out remove impurity, impurity content visual in ore pulp should be controlled below 10%；
2), filter pre-sifted, mineral aggregate or ore pulp are passed through in advance the sieve aperture of 60 ~ 400 mesh, selects breeze material or the ore pulp of relatively fine particle；
3), reduction roasting, for dry type mineral aggregate, sintering temperature 700-750 DEG C, the 13-15% that addition weight is dry type mineral aggregate of reducing agent, roasting time 70-90 minute, weak magnetism mineral are become ferromagnetic magnetic iron ore；
4), feed, mixing mineral aggregate or mixed ore pulp are injected into magnetic separator；
5), upper magnetic separation barrel magnetic separation, raw material enters from the upper feed inlet and outlet of upper magnetic separation barrel, electric magnet energising starts to rotate with rotating main shaft, after 20-30min magnetic separation, open the UNICOM's mouth between magnetic separation barrel and lower magnetic separation barrel, remaining mineral aggregate in upper magnetic separation barrel or ore pulp are discharged to lower magnetic separation barrel, treat that mineral aggregate or ore pulp, completely into lower magnetic separation barrel, close UNICOM's mouth；
6), upper magnetic separation barrel rotates and brings down stocks, upper magnetic separation barrel and lower magnetic separation barrel are rotated together with 180 °, upper magnetic separation barrel vertically rotates to lower section, open the upper feed inlet and outlet of magnetic separation barrel, aerator should be started by air blast in upper air water pipe upwards magnetic separation barrel for dry type mineral aggregate simultaneously, should be by external high-pressure water by spraying water in upper air water pipe upwards magnetic separation barrel for wet type ore pulp, and by electric magnet power-off high-speed rotation, while centrifugal force, gravity, wind-force or waterpower under effect, it is cleared out upper magnetic separation barrel through the mineral aggregate of magnetic separation or ore pulp, uses collection device to collect；
7), lower magnetic separation barrel magnetic separation, mineral aggregate remaining in lower magnetic separation barrel or ore pulp start magnetic separation, after 20 30min magnetic separation, open UNICOM's mouth, remaining mineral aggregate in lower magnetic separation barrel or ore pulp are discharged to upper magnetic separation barrel, treat that mineral aggregate or ore pulp, completely into upper magnetic separation barrel, close UNICOM's mouth；
8), lower magnetic separation barrel rotates and brings down stocks, upper magnetic separation barrel and lower magnetic separation barrel are rotated together with 180 °, lower magnetic separation barrel rotates to lower section again, open the lower feed inlet and outlet of lower magnetic separation barrel, aerator should be started by air blast in the lower downward magnetic separation barrel of air inlet water pipe for dry type mineral aggregate simultaneously, should be by external high-pressure water by spraying water in the lower downward magnetic separation barrel of air inlet water pipe for wet type ore pulp, and by electric magnet power-off high-speed rotation, while centrifugal force, gravity, wind-force or waterpower under effect, it is cleared out upper magnetic separation barrel through the mineral aggregate of magnetic separation or ore pulp, uses collection device to collect；
9), move in circles magnetic separation, the mineral aggregate higher for magnetic separation effect or ore pulp, and magnetic separation process can be repeated in step 5)-8) carry out, until reaching magnetic separation effect；
10), rotary slagging coutrol, upper magnetic separation barrel and lower magnetic separation barrel are rotated together with 180 °, when upper magnetic separation barrel above or lower magnetic separation barrel, feed inlet and outlet is opened, electric magnet is in power-off high-speed rotation simultaneously, utilize aerator air blast or external high-pressure water to spray water remnants mineral aggregate or ore pulp emptying, with collection device, iron mine is finally reclaimed.
During dry type magnetic separation, dry type mineral aggregate height in magnetic separator rotating shaft and above electric magnet between, the electric magnet average magnetic induction intensity of magnetic separator is 4000-6000Gs；During wet magnetic separation, above electric magnet that wet type ore pulp height in magnetic separator is above and magnetic separator between feed inlet and outlet, the electric magnet average magnetic induction intensity of magnetic separator is 6000-8000Gs, magnetic separator is energized 20-30min every time, the slewing rate of the axle being connected with electric magnet is 60-120r/min, wherein during magnetic separation, slewing rate is 60-90r/min, and rotating slewing rate when bringing down stocks is 90-120r/min, and rotation direction commutates once every 5-10min；The every 25-35min of driving means rotates once.
The Advantageous Effects of the present invention is as follows:
Concentration equipment in the present invention uses circulating device and the circulating system of driving means composition of Dual-barrel-shaped, when circulating device forwards diverse location under the driving of driving means, coordinate the folding of Based Intelligent Control central authorities slip opening, can realize mixed liquor and mixture replacing between two cylinders, mixed liquor and mixture are capable of circulation by magnetic separation.Increase substantially the efficiency of magnetic separation and the utilization rate of raw material.And blow and the structure of punching of spraying water owing to have employed air blast, a device can meet the requirement of dry type magnetic separation and wet magnetic separation.Magnetic selection method in the present invention, the repeatedly magnetic separation to raw material all completes in a device, and floor space is little, and flow process is short, it is simple to management, the utilization rate of raw material is not restricted by concentration equipment quantity.
In conjunction with accompanying drawings below, the present invention is described further.
Accompanying drawing explanation
Fig. 1 is a kind of magnetic selection method schematic flow sheet of the present invention；
Fig. 2 is a kind of dry-and wet-type circulation electromagnetic separator front view of the present invention；
Fig. 3 is a kind of dry-and wet-type circulation electromagnetic separator left view of the present invention；
Fig. 4 is a kind of dry-and wet-type circulation electromagnetic separator top view of the present invention；
Fig. 5 is slide switching plate structure simplified schematic diagram；
Fig. 6 is the control circuit figure of a kind of Wet-type electromagnetic separator of the present invention.
Detailed description of the invention
See accompanying drawing, a kind of dry-and wet-type circulation magnetic selection method, comprise the following steps:
1), ore grinding, cleaning remove impurity, if dry type mineral aggregate, should mineral aggregate be put in ball mill, be milled down to the granularity of at least 80% mineral less than 0.08mm, if wet type ore pulp, should first be carried out remove impurity, impurity content visual in ore pulp should be controlled below 10%；
2), filter pre-sifted, mineral aggregate or ore pulp are passed through in advance the sieve aperture of 60 ~ 400 mesh, selects breeze material or the ore pulp of relatively fine particle；
3), reduction roasting, for dry type mineral aggregate, sintering temperature 700-750 DEG C, the 13-15% that addition weight is dry type mineral aggregate of reducing agent, roasting time 70-90 minute, weak magnetism mineral are become ferromagnetic magnetic iron ore；
4), feed, mixing mineral aggregate or mixed ore pulp are injected into magnetic separator；
5), upper magnetic separation barrel magnetic separation, raw material enters from the upper feed inlet and outlet of upper magnetic separation barrel, electric magnet energising starts to rotate with rotating main shaft, after 20 30min magnetic separation, open the UNICOM's mouth between magnetic separation barrel and lower magnetic separation barrel, remaining mineral aggregate in upper magnetic separation barrel or ore pulp are discharged to lower magnetic separation barrel, treat that mineral aggregate or ore pulp, completely into lower magnetic separation barrel, close UNICOM's mouth；
6), upper magnetic separation barrel rotates and brings down stocks, upper magnetic separation barrel and lower magnetic separation barrel are rotated together with 180 °, upper magnetic separation barrel vertically rotates to lower section, open the upper feed inlet and outlet of magnetic separation barrel, aerator should be started by air blast in upper air water pipe upwards magnetic separation barrel for dry type mineral aggregate simultaneously, should be by external high-pressure water by spraying water in upper air water pipe upwards magnetic separation barrel for wet type ore pulp, and by electric magnet power-off high-speed rotation, while centrifugal force, gravity, wind-force or waterpower under effect, it is cleared out upper magnetic separation barrel through the mineral aggregate of magnetic separation or ore pulp, uses collection device to collect；
7), lower magnetic separation barrel magnetic separation, mineral aggregate remaining in lower magnetic separation barrel or ore pulp start magnetic separation, after 20 30min magnetic separation, open UNICOM's mouth, remaining mineral aggregate in lower magnetic separation barrel or ore pulp are discharged to upper magnetic separation barrel, treat that mineral aggregate or ore pulp, completely into upper magnetic separation barrel, close UNICOM's mouth；
8), lower magnetic separation barrel rotates and brings down stocks, upper magnetic separation barrel and lower magnetic separation barrel are rotated together with 180 °, lower magnetic separation barrel rotates to lower section again, open the lower feed inlet and outlet of lower magnetic separation barrel, aerator should be started by air blast in the lower downward magnetic separation barrel of air inlet water pipe for dry type mineral aggregate simultaneously, should be by external high-pressure water by spraying water in the lower downward magnetic separation barrel of air inlet water pipe for wet type ore pulp, and by electric magnet power-off high-speed rotation, while centrifugal force, gravity, wind-force or waterpower under effect, it is cleared out upper magnetic separation barrel through the mineral aggregate of magnetic separation or ore pulp, uses collection device to collect；
9), move in circles magnetic separation, the mineral aggregate higher for magnetic separation effect or ore pulp, and magnetic separation process can be repeated in step 5)-8) carry out, until reaching magnetic separation effect；
10), rotary slagging coutrol, upper magnetic separation barrel and lower magnetic separation barrel are rotated together with 180 °, when upper magnetic separation barrel above or lower magnetic separation barrel, feed inlet and outlet is opened, electric magnet is in power-off high-speed rotation simultaneously, utilize aerator air blast or external high-pressure water to spray water remnants mineral aggregate or ore pulp emptying, with collection device, iron mine is finally reclaimed.
During dry type magnetic separation, dry type mineral aggregate height in magnetic separator rotating shaft and above electric magnet between, the electric magnet average magnetic induction intensity of magnetic separator is 4000-6000Gs;During wet magnetic separation, above electric magnet that wet type ore pulp height in magnetic separator is above and magnetic separator between feed inlet and outlet, the electric magnet average magnetic induction intensity of magnetic separator is 6000-8000Gs, magnetic separator is energized 20-30min every time, the slewing rate of the axle being connected with electric magnet is 60-120r/min, wherein during magnetic separation, slewing rate is 60-90r/min, and rotating slewing rate when bringing down stocks is 90-120r/min, and rotation direction commutates once every 5-10min；The every 25-35min of driving means rotates once, reduction roasting, and for dry type mineral aggregate, sintering temperature 700-750 DEG C, reducing agent adds the 13-15% that weight is dry type mineral aggregate, roasting time 70-90 minute, weak magnetism mineral are become ferromagnetic magnetic iron ore.
The magnetic separator that the present invention uses, as shown in Figure 2-5,
A kind of dry-and wet-type circulation electromagnetic separator, include bearing 1, concentration equipment 2, concentration equipment 2 is rotated by rotary shaft 3 and is installed on bearing 1, rotary shaft 3 is externally connected with rotatable 180 ° of driving means, concentration equipment 2 includes the upper magnetic separation barrel 4 being fixedly connected into one, lower magnetic separation barrel 5, upper magnetic separation barrel 4, rotate respectively in lower magnetic separation barrel 5 and rotating shaft 16 is set, lower rotary shaft 17, upper rotating shaft 16, four groups of electric magnet 6 it are fixed with in lower rotary shaft 17 surrounding, material spilling hole 15 is distributed on electric magnet 6, upper magnetic separation barrel 4, the upper air water pipe 7 crossed it is provided with in lower magnetic separation barrel 5, lower air inlet water pipe 8, upper air water pipe 7, lower air inlet water pipe 8 outer end is connected to external high-pressure water, aerator 9；Water spray pore 10 is had on upper air water pipe 7, lower air inlet water pipe 8 sidewall, upper magnetic separation barrel has feed inlet and outlet 13, lower magnetic separation barrel 5 has lower feed inlet and outlet 14, it is connected by UNICOM's mouth 11 between upper magnetic separation barrel with lower magnetic separation barrel, UNICOM's mouth 11 between the upper feed inlet and outlet of upper magnetic separation barrel, the feed inlet and outlet of lower magnetic separation barrel, upper magnetic separation barrel 4 and lower magnetic separation barrel 5 slides respectively and is provided with arc striker plate 12, upper air water pipe, lower air inlet water pipe outer end have branched out air inlet pipe, water inlet pipe respectively, are provided with switch in air inlet pipe, water inlet pipe.
Dry type magnetic separation: the original state of this device is as shown in Figure 2.Upper feed inlet and outlet 13 is opened, and UNICOM's mouth 11 and lower feed inlet and outlet 14 between upper magnetic separation barrel 4 and lower magnetic separation barrel 5 all close, and raw material enters upper magnetic separation barrel；Raw material closes upper feed inlet and outlet 13 after adding；Upper rotating shaft starts to rotate, and electric magnet 6 is initially powered up, and magnetic separation starts, and aerator is started working air blast simultaneously, and upper air water pipe 7 is opened beginning air blast, made to be dried raw material the most selected in cylinder；By circuit control, after right times, upper UNICOM's mouth 11 between magnetic separation barrel 4 and lower magnetic separation barrel 5 is opened, upper rotating shaft, electric magnet 6, aerator, upper air water pipe 7 continue state before holding, make to be dried raw material and fully flow into lower magnetic separation barrel, the upper UNICOM's mouth 11 between magnetic separation barrel 4 and lower magnetic separation barrel 5 of Guan Bi after 1-2min；Rotary shaft turns clockwise 180 °, i.e. goes up magnetic separation barrel and is positioned at lower section, and lower magnetic separation barrel is above；For upper magnetic separation barrel, electric magnet 6 power-off magnetic disappears, and upper rotating shaft, electric magnet 6, aerator, upper air water pipe 7 continue state before holding, owing to absorption affinity disappears, and there is gravity, wind-force and centrifugal force, and mineral are brought at feed inlet and outlet 13；Open feed inlet and outlet 13, take mineral away, then complete a magnetic separation, implement complete 1 time；For lower magnetic separation barrel, lower magnetic separation barrel is transferred to during initial position (position of upper magnetic separation barrel), ibid magnetic separation barrel operating mechanism, lower magnetic separation barrel is rotated back to following the most counterclockwise, then go up magnetic separation barrel again to fill into dry raw material, and at this moment, lower magnetic separation barrel is clearing up iron mineral, so far, a magnetic separation (being equivalent to a circulation magnetic separation twice) is completed.Magnetic separation barrel alternately magnetic separation under upper magnetic separation barrel, it is achieved that the circulation magnetic separation of raw material, drastically increases efficiency of magnetic separation and raw material availability.
Wet magnetic separation: the original state of this device is as shown in Figure 2.Upper feed inlet and outlet 13 is opened, and UNICOM's mouth 11 and lower feed inlet and outlet 14 between upper magnetic separation barrel 4 and lower magnetic separation barrel 5 all close, and raw material enters upper magnetic separation barrel；Raw material closes upper feed inlet and outlet 13 after adding；Upper rotating shaft starts to rotate, and electric magnet 6 is initially powered up, and magnetic separation starts, and upper air water pipe 7 is opened simultaneously, and the water pipe connecting high-pressure water starts water spray by upper air water pipe 7, makes liquid charging stock the most selected in cylinder；By circuit control, after right times, upper UNICOM's mouth 11 between magnetic separation barrel 4 and lower magnetic separation barrel 5 is opened, upper rotating shaft, electric magnet 6, upper air water pipe 7 continue state before holding, make liquid charging stock fully flow into lower magnetic separation barrel, the upper UNICOM's mouth 11 between magnetic separation barrel 4 and lower magnetic separation barrel 5 of Guan Bi after 1-2min；Rotary shaft turns clockwise 180 °, i.e. goes up magnetic separation barrel and is positioned at lower section, and lower magnetic separation barrel is above；For upper magnetic separation barrel, electric magnet 6 power-off magnetic disappears, and upper rotating shaft, electric magnet 6, upper air water pipe 7 continue state before holding, owing to absorption affinity disappears, and there is gravity, water flow impact pressure and centrifugal force, and mineral are brought at feed inlet and outlet 13；Open feed inlet and outlet 13, take mineral away, then complete a magnetic separation, implement complete 1 time；For lower magnetic separation barrel, lower magnetic separation barrel is transferred to during initial position (position of upper magnetic separation barrel), ibid magnetic separation barrel operating mechanism, lower magnetic separation barrel is rotated back to following the most counterclockwise, then go up magnetic separation barrel again to fill into liquid charging stock, and at this moment, lower magnetic separation barrel is clearing up iron mineral, so far, a magnetic separation (being equivalent to a circulation magnetic separation twice) is completed.Magnetic separation barrel alternately magnetic separation under upper magnetic separation barrel, it is achieved that the circulation magnetic separation of raw material, drastically increases efficiency of magnetic separation and raw material availability.
Claims (1)
1. a dry-and wet-type circulation magnetic selection method, is characterized in that: comprise the following steps:
1), ore grinding, cleaning remove impurity, if dry type mineral aggregate, should mineral aggregate be put in ball mill, be milled down to the granularity of at least 80% mineral less than 0.08mm, if wet type ore pulp, should first be carried out remove impurity, impurity content visual in ore pulp should be controlled below 10%；
2), filter pre-sifted, mineral aggregate or ore pulp are passed through in advance the sieve aperture of 60 ~ 400 mesh, selects breeze material or the ore pulp of relatively fine particle；
3), reduction roasting, for dry type mineral aggregate, sintering temperature 700-750 DEG C, the 13-15% that addition weight is dry type mineral aggregate of reducing agent, roasting time 70-90 minute, weak magnetism mineral are become ferromagnetic magnetic iron ore；
4), feed, mixing mineral aggregate or mixed ore pulp are injected into magnetic separator；
5), upper magnetic separation barrel magnetic separation, raw material enters from the upper feed inlet and outlet of upper magnetic separation barrel；Electric magnet and the rotary shaft being connected with electric magnet in upper magnetic separation barrel are all energized, electric magnet in upper magnetic separation barrel rotates with the rotation of the rotary shaft being connected with electric magnet in upper magnetic separation barrel, after 20 30min magnetic separation, open the UNICOM's mouth between magnetic separation barrel and lower magnetic separation barrel, remaining mineral aggregate in upper magnetic separation barrel or ore pulp are discharged to lower magnetic separation barrel, treat that mineral aggregate or ore pulp, completely into lower magnetic separation barrel, close UNICOM's mouth；
6), upper magnetic separation barrel rotates brings down stocks, upper magnetic separation barrel and lower magnetic separation barrel are rotated together with 180 °, upper magnetic separation barrel vertically rotates to lower section, open the upper feed inlet and outlet of magnetic separation barrel, aerator should be started by air blast in upper air water pipe upwards magnetic separation barrel for dry type mineral aggregate simultaneously, should be by external high-pressure water by spraying water in upper air water pipe upwards magnetic separation barrel for wet type ore pulp, and by the electric magnet power-off in upper magnetic separation barrel, the rotary shaft being connected with electric magnet in upper magnetic separation barrel continues energising high-speed rotation, at centrifugal force, gravity, while wind-force or waterpower under effect, it is cleared out upper magnetic separation barrel through mineral aggregate or the ore pulp of magnetic separation, employing collection device is collected；
7), lower magnetic separation barrel magnetic separation, mineral aggregate remaining in lower magnetic separation barrel or ore pulp start magnetic separation, after 20 30min magnetic separation, open UNICOM's mouth, remaining mineral aggregate in lower magnetic separation barrel or ore pulp are discharged to upper magnetic separation barrel, treat that mineral aggregate or ore pulp, completely into upper magnetic separation barrel, close UNICOM's mouth；
8), lower magnetic separation barrel rotates brings down stocks, upper magnetic separation barrel and lower magnetic separation barrel are rotated together with 180 °, lower magnetic separation barrel rotates to lower section again, open the lower feed inlet and outlet of lower magnetic separation barrel, aerator should be started by air blast in the lower downward magnetic separation barrel of air inlet water pipe for dry type mineral aggregate simultaneously, should be by external high-pressure water by spraying water in the lower downward magnetic separation barrel of air inlet water pipe for wet type ore pulp, and by the electric magnet power-off in lower magnetic separation barrel, the rotary shaft being connected with electric magnet in lower magnetic separation barrel continues energising high-speed rotation, at centrifugal force, gravity, while wind-force or waterpower under effect, it is cleared out lower magnetic separation barrel through mineral aggregate or the ore pulp of magnetic separation, employing collection device is collected；
9), move in circles magnetic separation, the mineral aggregate higher for effect after magnetic separation or ore pulp, and magnetic separation process is repeated in step 5)-8) carry out, until reaching magnetic separation effect；
10), rotary slagging coutrol, upper magnetic separation barrel and lower magnetic separation barrel are rotated together with 180 °, the feed inlet and outlet of the magnetic separation barrel being positioned at lower section is opened, the rotary shaft being connected with the electric magnet energising high-speed rotation being simultaneously positioned in the magnetic separation barrel of lower section, utilize aerator air blast or external high-pressure water to spray water remnants mineral aggregate or ore pulp emptying, with collection device, iron mine is finally reclaimed.
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| CN104941797B (en) * | 2015-05-28 | 2016-06-01 | 张宝祥 | A kind of mineral dressing method |
| CN105413842B (en) * | 2015-12-16 | 2016-11-16 | 中冶沈勘秦皇岛工程技术有限公司 | The ore-dressing technique of Ultra-low-grade magnetite and system |
| CN108355782A (en) * | 2018-04-27 | 2018-08-03 | 刘大康 | A kind of two formula ball mill of mining dry and wet |
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| BR0303636A (en) * | 2003-09-26 | 2005-05-03 | Jose Pancracio Ribeiro | Double drum electromagnetic separator for magnetic concentration |
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| CN201132135Y (en) * | 2007-11-30 | 2008-10-15 | 王润轩 | Dry-wet type permanent ferromagnetism ore-separator |
| CN202179999U (en) * | 2011-06-24 | 2012-04-04 | 马鞍山起劲磁塑科技有限公司 | Dry and wet magnetic separator |
| CN103343217A (en) * | 2013-06-25 | 2013-10-09 | 新疆昌平矿业有限责任公司 | Siderite roasting and dry sorting method |
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| CN102728555B (en) * | 2011-04-11 | 2015-09-30 | 王仲武 | A kind of dry separation enrichment and separation method and the system for dry separation enrichment and separation method |
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|---|---|---|---|---|
| US4157955A (en) * | 1976-03-26 | 1979-06-12 | Heinrich Spodig | Magnetic separator |
| BR0303636A (en) * | 2003-09-26 | 2005-05-03 | Jose Pancracio Ribeiro | Double drum electromagnetic separator for magnetic concentration |
| CN1628910A (en) * | 2003-12-15 | 2005-06-22 | 湘潭钢铁集团有限公司 | Process for ball milling and water washing of waste iron and steel slag, slag slurry treatment process, and apparatus therefor |
| CN201132135Y (en) * | 2007-11-30 | 2008-10-15 | 王润轩 | Dry-wet type permanent ferromagnetism ore-separator |
| CN202179999U (en) * | 2011-06-24 | 2012-04-04 | 马鞍山起劲磁塑科技有限公司 | Dry and wet magnetic separator |
| CN103343217A (en) * | 2013-06-25 | 2013-10-09 | 新疆昌平矿业有限责任公司 | Siderite roasting and dry sorting method |
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