CN103056028B - Magnetic ore separation equipment and method - Google Patents
Magnetic ore separation equipment and method Download PDFInfo
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- CN103056028B CN103056028B CN201310025228.1A CN201310025228A CN103056028B CN 103056028 B CN103056028 B CN 103056028B CN 201310025228 A CN201310025228 A CN 201310025228A CN 103056028 B CN103056028 B CN 103056028B
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Abstract
The invention discloses magnetic ore separation equipment. According to the technical point, an underflow ore discharge pipe of a magnetic separation column is connected with a feed port of a first agitating vessel, and an overflow groove ore discharge pipe of the magnetic separation column is connected with an overflow groove of a two-section magnetism flotation column; the ore discharge pipe of the first agitating vessel is connected with the feed port of a second agitating vessel, the ore discharge pipe of the second agitating vessel is connected with a feed hopper with a one-section magnetism flotation column, the one-section magnetism flotation column is connected with a scavenging device, and the overflow groove ore discharge pipe of the one-section magnetism flotation column is connected with the feeding end of the scavenging device; the two-section magnetism flotation column or a magnetic separator is used as the scavenging device, and the underflow ore discharge pipe of the two-section magnetism flotation column is connected with the feed hopper of the one-section magnetism flotation column; and the overflow groove ore discharge pipe of the two-section magnetism flotation column or a tailings discharge pipe of the magnetic separator is connected with a tailings recovery system. The invention simultaneously provides a separation method for using the equipment. Problems in the prior art that magnetic inclusion generates in the core separation of magnetite, the separation method is complicated, the floor area is large, the separation flow path is low and the separation cost is high and the like are solved.
Description
Technical field
The invention belongs to sorting mineral technical field, relating to short route screening installation and the method for separating of mineral, is magnetic mineral pillar screening installation and method specifically.
Background technology
Iron is metal the most frequently used in the world, in metal consumption total amount, account for more than 95%.China due to the large-scale development of iron ore deposit, and causes the resource of magnetite worsening shortages of easily choosing, and therefore need deep production, mining cost also raises gradually.Current magnetite separation adopts continuous multi-stage concentration equipment to carry out sorting usually, becomes Iron concentrate after eventually passing column magnetic separator sorting, also has minority ore dressing plant to adopt reverse flotation to realize Iron concentrate and sorts.It is more that floatation process sorts hop count, complex process, and the general flow process adopting one roughing primary cleaning to scan for three times, this process equipment floor space is large, long flow path, is not easy to management.Magnetic separation process magnetic is mingled with many, and large field intensity magnetic separation causes mine tailing low usually, and concentrate grade is defective, and yield is high; Little field intensity magnetic separation causes concentrate qualified usually, and mine tailing is high, and yield is low, is generally not easy to reach better quality Iron concentrate.
In traditional centrifugal mineralising mode: on the one hand, stirring action mechanism limits bubble size size, when maximum at most, be difficult to fall apart into minute bubbles by broken for air.So traditional handicraft cannot realize strengthening large aeration quantity, the minute bubbles needed for fine particles flotation simultaneously.On the other hand, particulate iron can be caused to enter foam phase for increase stirring intensity and mineral laden bubble short circuit enters underflow, but also hydrophobic type ore particle can be caused to come off from mineral laden bubble surface.In sum, current magnetite separation flow process limits the quality of Iron concentrate, therefore urgently improves.
Summary of the invention
The object of this invention is to provide magnetic mineral pillar screening installation and method for separating, magnetite separation magnetic in prior art is mingled with to solve, method for separating is complicated, floor space large, sorting long flow path, sorting cost are high, the height turbulent flow of staticize separation and bottom eddy flow influences each other and cause the low inferior problem of separating effect.
The object of the present invention is achieved like this:
On the one hand, the invention provides a kind of screening installation, it comprises column magnetic separator, agitator, magnetic flotation post, scan device, it is characterized in that: the underflow ore discharge pipe of described column magnetic separator is connected with the feed port of the first agitator, the overflow launder ore discharge pipe of column magnetic separator is connected with the overflow launder of two sections of magnetic flotation posts, the ore discharge pipe of the first agitator is connected with the feed port of the second agitator, the mine feeding bucket of the ore discharge Guan Yuyi section magnetic flotation post of the second agitator is connected, one section of magnetic flotation post with scan device and be connected, the overflow launder ore discharge pipe of one section of magnetic flotation post with scan being connected to ore deposit end of device, scanning device is two sections of magnetic flotation posts or magnetic separator, the mine feeding bucket of the underflow ore discharge Guan Yuyi section magnetic flotation post of two sections of magnetic flotation posts is connected, the overflow launder ore discharge pipe of two sections of magnetic flotation posts or the mine tailing ore discharge pipe of magnetic separator are connected with mining tailing system,
One section or/and two sections of magnetic flotation posts comprise overflow launder and sorting post, overflow launder is the staving of bottom angled, is fixed in sorting post upper outside bottom it, and overflow launder annularly inner wall even distribution has some froth breaking water pipes with shower nozzle; In sorting post, interval arranges some sieve plates; Be provided with magnetic system from top to bottom outside sorting post or in cylinder, magnetic is solenoid or permanent magnet; Sorting column bottom is connected with ore discharge device by flange, is provided with middling cycle cone in ore discharge device, and middling cycle cone bottom flows into hold with circulation slime dam and is connected; Sorting post sidewall is provided with microvesicle generators and jet mineralising pipe, and jet mineralising pipe is provided with jet bubble generator and middling cycle distributes ring, and jet mineralising pipe is connected with the outflow end of circulation slime dam.
Run through under described magnetic flotation post sieve plate and some barretters are set.
Non-magnet_conductible material is surrounded by outside described external magnetic system.
The scope of described magnetic system is 1/3 ~ 2/3 of sorting post height, and middling cycle cone cone mouth diameter is 0.4 ~ 0.85 of sorting column diameter.
On the other hand, the invention provides a kind of method for separating, it comprises the following steps:
1) feed: the center magnetic induction intensity of column magnetic separator is set as 10 ~ 500mT, magnetic mineral content is that the ore pulp of 20 ~ 50wt% is with 10 ~ 150m
3first the flow of/h feeds the mine feeding bucket of column magnetic separator, and column magnetic separator concentrate content is 20 ~ 50wt%, with 10 ~ 150m
3the flow of/h feeds the first agitator, adds inhibitor and activator simultaneously, mixed by ore pulp, feed second agitator, feed collecting agent and mix in the second agitator with medicament in the first agitator;
2) sorting: with 10 ~ 150m after the concentrate confection stirring of column magnetic separator
3the flow of/h feeds the mine feeding bucket of one section of magnetic flotation post, through magnetic flotation post give mining area, laminar flow divides constituency, turbulent region, eddy flow district, after ore pulp is subject to magnetic field force that magnetic induction intensity is 10 ~ 800mT, buoyancy, gravity, centrifugal force in the process, gangue and intergrowth follow foam becomes overflow, iron powder through filter, obtains finished iron fine powder as the underflow concentrate of one section of magnetic flotation post after filtration;
3) reclaim: the tailing foam of one section of magnetic flotation post is through 20 ~ 100m
3feed after the froth breaking Water spray froth breaking of/h two sections of magnetic flotation posts or magnetic separator to ore deposit end, the magnetic field intensity of two sections of magnetic flotation posts is 10 ~ 800mT, mine tailing is entered mining tailing system by the overflow launder ore discharge pipe of two sections of magnetic flotation posts or the mine tailing ore discharge pipe of magnetic separator, and the iron ore concentrate that magnetic separator sub-elects feeds grinding system.
Causticization starch is selected from described inhibitor; Activator is selected from the one of NaOH or calcium oxide; Collecting agent is selected from ether amine, lauryl amine, ether amine and the compound drug of lauryl amine, the one or more than one of MH, MG.
Advantage of the present invention and beneficial effect as follows: adopt bored by middling cycle, jet mineralising pipe again pump into sorting post and carry out sorting, avoid magnetic and be mingled with impact, improve impurity and select probability, enhance remineralization efficacy; Whole method layout and equipment decrease the use number of units of sorting post, shorten sorting flow process, reduce the floor space of screening installation, reduce production cost, improve the efficiency of separation, simplify method for separating; Stirring and evenly mixing device and the split of magnetic flotation post are arranged, avoids the restriction of stirring action mechanism to magnetic flotation efficiency; Use two agitator, in the first agitator, realize fully sizing mixing of ore pulp, the second agitator realizes the mixing of medicament, and then carry out mixing of ore pulp and medicament, make mixing more fully, the efficiency of separation is higher; Adopt two magnetic flotation post to carry out sorting, sorting quality and sorting yield are improved in the basis ensureing the shortest sorting flow process; Middling cycle cone diameter in magnetic flotation post is set to 0.4 ~ 0.85 of sorting column diameter, and the scope of magnetic system is 1/3 ~ 2/3 of sorting post height, not only increases impurity-eliminating effect, and improves yield; Non-magnet_conductible material is set outside external magnetic system, eliminates the impact of surrounding environment on magnetic flotation post magnetic field, improve the stability in its magnetic field, ensure that the efficiency of sorting; Magnetic flotation post is provided with jet bubble generator and microvesicle generators simultaneously, while generation high-efficiency jet bubble, produces bubble with microvesicle generators, compensate for gas in usual jet flotation column mixing tube and, containing the problem of skewness, greatly improve separating effect; Jet rotational flow sorting and pipe stream mineralising act on simultaneously, further increase yield; Run through under magnetic flotation post sieve plate and some barretters are set, the ore pulp of cylinder flotation section and bubble avoid the rotation of cylinder while rising, turbulent flow is tended to be steady and makes it be converted into sorting eddy current, while overcoming the height turbulent flow contradiction of staticize separation and bottom eddy flow, improve separating effect; The overflow water of column magnetic separator also can be used as the froth breaking water of magnetic flotation post, not only saves froth breaking water, and shortens sorting flow process, improves the efficiency of separation; Two sections of sortings can realize low mine tailing and directly run tail, improve productive rate and metal recovery rate, improve the level of resources utilization, decrease the waste of resource, more economically environmental protection.
Accompanying drawing explanation
Fig. 1 is a kind of method for separating flow process simplified schematic diagram of the present invention;
Fig. 2 is another kind of method for separating flow process simplified schematic diagram of the present invention;
Fig. 3 is the structural representation sketch of interior magnetic system magnetic flotation post;
Fig. 4 is the enlarged drawing of Fig. 1 overflow groove structure;
Fig. 5 is the plan structure simplified schematic diagram of Fig. 2 overflow groove structure;
Fig. 6 is the plan structure schematic diagram of sieve plate;
Fig. 7 is the structural representation sketch of the outer magnetic system of sorting post;
Fig. 8 is the structural representation sketch of magnetic system in sorting post;
Fig. 9 be outer magnetic system magnetic flotation post structural representation.
In accompanying drawing, primary symbols illustrates: 1 column magnetic separator mine feeding bucket, 2 column magnetic separators, 3 medicament feed pipes, 4 first agitators, 5 second agitators, 6 one sections of magnetic flotation posts, 7 two sections of magnetic flotation posts, 8 give ore deposit pump, 9 filters, 10 magnetic separators, 11 magnetic separator concentrate ore discharge pipes, 12 magnetic separator mine tailing ore discharge pipes, 21 overflow launders, 22 mineral-feeding pipes, 23 sorting posts, 24 sieve plates, 25 middling cycle cones, 26 underflow ore discharge pipes, 27 chats ore discharge pipes, 28 ore discharge devices, 29 jet mineralising pipes, 291 jet bubble generators, 292 microvesicle generators, 30 chats feed ports, 31 middling cycle distribute ring, 32 magnetic systems, 33 overflow launder ore discharge pipes, 34 froth breaking water pipes, 35 shower nozzles.
The present invention to be described in further detail by example below in conjunction with accompanying drawing; but following example is only the present invention's example wherein; do not represent the rights protection scope that the present invention limits, the scope of the present invention is as the criterion with claims.
Detailed description of the invention
embodiment 1
With reference to figure 1, Fig. 3, Fig. 4, Fig. 5, Fig. 6, magnetic ore separation equipment shown in Fig. 8, it comprises column magnetic separator 2, one section of magnetic flotation post 6, two sections of magnetic flotation posts 7, first agitator 4, second agitator 5, the underflow ore discharge pipe of column magnetic separator is connected with the feed port of the first agitator 4, the overflow launder ore discharge pipe of column magnetic separator is connected with the overflow launder of two sections of magnetic flotation posts, the ore discharge pipe of the first agitator is connected with the feed port of the second agitator 5, the mine feeding bucket of the ore discharge Guan Yuyi section magnetic flotation post of the second agitator 5 is connected, the overflow launder ore discharge pipe of one section of magnetic flotation post is connected with the feed port of two sections of magnetic flotation posts, the mine feeding bucket of the underflow ore discharge Guan Yuyi section magnetic flotation post of two sections of magnetic flotation posts is connected, the mine tailing ore discharge pipe of the overflow launder ore discharge pipe of two sections of magnetic flotation posts is connected with mining tailing system (not shown),
The structure of one section and two sections magnetic flotation post is as follows, it comprises overflow launder 21 and sorting post 23, overflow launder is the staving of bottom angled, is fixed in sorting post 23 upper outside bottom it, and overflow launder annularly inner wall even distribution has some froth breaking water pipe 34(with shower nozzle 35 as shown in Figure 4,5); In sorting post, interval arranges some sieve plates 24, and run through under sieve plate and arrange some barretters (as shown in Figure 6), sieve-plate aperture ratio is more than 50%; Be provided with magnetic system 32 from top to bottom in sorting post cylinder, magnetic is solenoid or permanent magnet (as shown in Figure 8); Sorting column bottom is connected with ore discharge device 28 by flange, is provided with middling cycle cone 25 in ore discharge device, flows into hold to be connected bottom middling cycle cone 25 with circulation slime dam (not shown); Sorting post 23 sidewall is provided with microvesicle generators 292 and jet mineralising pipe 29, and jet mineralising pipe is provided with jet bubble generator and middling cycle distributes ring 31, and jet mineralising pipe 29 is connected with the outflow end of circulation slime dam.For improving efficiency of magnetic separation, improving magnetic mineral yield, is 2/3 of sorting post height by the range set of magnetic system, and middling cycle cone cone 25 mouthfuls of diameters are 0.6 of sorting post 23 diameter.For improving the effect of eddy current sorting in sorting post, suitably can set up number of screen decks or increasing barretter length.
Assorting room: regulated between 20 ~ 500mT by the center magnetic induction intensity of column magnetic separator and find best magnetic separation magnetic field, magnetic mineral is that the ore pulp of 30wt% is with 140 ~ 150m
3first the flow of/h feeds the mine feeding bucket of column magnetic separator 2, and column magnetic separator concentrate is with 140 ~ 150m
3the flow of/h feeds the first agitator 4, in the first agitator, add causticization starch and NaOH simultaneously, feed second agitator 5 after being mixed with medicament by ore pulp by stirring, then in the second agitator, feed cation-collecting agent and anionic collector.After stirring, with 140 ~ 150m
3the flow of/h feeds the mine feeding bucket of one section of magnetic flotation post 6, and ore pulp is subject to magnetic field force that magnetic induction intensity is 20 ~ 800mT in the process, buoyancy, gravity, centrifugal force is separated.Gangue and intergrowth follow foam becomes overflow, and high-quality iron powder becomes the underflow concentrate of one section of magnetic flotation post through filter (as magnetic is filtered, vacuum filter, disk filter etc.) outward, obtains finished iron fine powder after filtration.The tailing foam of one section of magnetic flotation post 6 is through 80 ~ 100m
3feed the mine feeding bucket of two sections of magnetic flotation posts 7 after the froth breaking Water spray froth breaking of/h flow, the magnetic field intensity of two sections of magnetic flotation posts is 20 ~ 700mT, and the overflow water of one section of magnetic flotation post is as the froth breaking water of two sections of magnetic flotation posts.Magnetic mineral particles constantly carries out disperseing and reunites under pulsed magnetic field action, make to be mixed in gangue mineral wherein or lean intergrowth disengaging magnetic agglomerate, reduce and be mingled with degree, the gangue and the intergrowth that depart from magnetic coagulation are easy to be caught by bubble, together with bubble adhesion, be subject to the buoyancy being greater than gravity, overcome gravity to move upward to collect and become froth bed, overflow cylinder, magnetic mineral forms magnetic coagulation due to left magnetic effect, or monomer is subject to downward making a concerted effort, when downward active force be greater than upwards active force, through magnetic field, laminar flow sorts district, turbulent flow sorts district, turbulent flow sorts district, eddy flow sorts district, again two parts material is separated into, part material is of high grade, density is large, the centrifugal force be subject in eddy flow district is large, be thrown toward post jamb, move down along post jamb under the obstruction of post jamb and become iron ore concentrate discharge cylinder, the mixture density be mingled with containing magnetic is little, grade is low, the centrifugal force be subject to is little, rotate downwards in Yuan Bi district, move upward, move downward part and fall into middling cycle cone, middling cycle cone cone mouth diameter is 0.6 of column diameter, in middling cycle cone, material feeds middling cycle distribution ring, ore pulp in middling cycle distribution ring is through multiple jet bubble generator and chats mineralising pipe, tangentially feed cylinder eddy flow district, form a cyclic system.The partial density that moves upward is minimum, and grade is minimum, repeats to produce centrifugation through turbulent flow, turbulent flow, laminar flow field regions, forms a reciprocation cycle process, is rejected by impurity.
embodiment 2
With reference to figure 2, Fig. 4, Fig. 5, Fig. 6, Fig. 7, magnetic ore separation equipment shown in Fig. 9, it comprises column magnetic separator 2, one section of magnetic flotation post 6, magnetic separator 10, first agitator 4, second agitator 5, the underflow ore discharge pipe of column magnetic separator is connected with the feed port of the first agitator 4, the overflow launder ore discharge pipe of column magnetic separator is connected with the overflow launder of two sections of magnetic flotation posts, the ore discharge pipe of the first agitator is connected with the feed port of the second agitator 5, the mine feeding bucket of the ore discharge Guan Yuyi section magnetic flotation post of the second agitator 5 is connected, the overflow launder ore discharge pipe of one section of magnetic flotation post is connected with the feed port of magnetic separator, the mine tailing ore discharge pipe of magnetic separator is connected with mining tailing system (not shown),
The structure of one section of magnetic flotation post is as follows, it comprises overflow launder 21 and sorting post 23, overflow launder is the staving of bottom angled, is fixed in sorting post 23 upper outside bottom it, and overflow launder annularly inner wall even distribution has some froth breaking water pipe 34(with shower nozzle 35 as shown in Figure 4,5); In sorting post, interval arranges some sieve plates 24, and run through under sieve plate and arrange some barretters (as shown in Figure 6), sieve-plate aperture ratio is more than 50%; Sorting post is provided with magnetic system 32 from top to bottom outward, and magnetic is solenoid or permanent magnet (as shown in Figure 8), is surrounded by non-magnet_conductible material outside external coil; Sorting column bottom is connected with ore discharge device 28 by flange, is provided with middling cycle cone 25 in ore discharge device, flows into hold to be connected bottom middling cycle cone 25 with circulation slime dam (not shown); Sorting post 23 sidewall is provided with microvesicle generators 292 and jet mineralising pipe 29, and jet mineralising pipe is provided with jet bubble generator and middling cycle distributes ring 31, and jet mineralising pipe 29 is connected with the outflow end of circulation slime dam.For improving efficiency of magnetic separation, improving magnetic mineral yield, is 2/3 of sorting post height by the range set of magnetic system, and middling cycle cone cone 25 mouthfuls of diameters are 0.7 of sorting post 23 diameter.For improving the effect of eddy current sorting in sorting post, suitably can set up number of screen decks or increasing barretter length.
Assorting room: the center magnetic induction intensity of column magnetic separator is set as 400mt, magnetic mineral is that the ore pulp of 30wt% is with 140 ~ 150m
3first the flow of/h feeds the mine feeding bucket of column magnetic separator 2, and column magnetic separator concentrate is with 140 ~ 150m
3the flow of/h feeds the first agitator 4, in the first agitator, add causticization starch and NaOH simultaneously, feed second agitator 5 after being mixed with medicament by ore pulp by stirring, then in the second agitator, feed cation-collecting agent and anionic collector.After stirring, with 140 ~ 150m
3the flow of/h feeds the mine feeding bucket of one section of magnetic flotation post 6, and ore pulp is subject to magnetic field force that magnetic induction intensity is 20 ~ 800mT in the process, buoyancy, gravity, centrifugal force is separated.Gangue and intergrowth follow foam becomes overflow, and high-quality iron powder becomes the underflow concentrate of one section of magnetic flotation post through filter (as magnetic is filtered, vacuum filter, disk filter etc.) outward, obtains finished iron fine powder after filtration.The tailing foam of one section of magnetic flotation post 6 is through 80 ~ 100m
3the mine feeding bucket of magnetic separator 12 is fed after the froth breaking Water spray froth breaking of/h flow.At one section of magnetic flotation post, jet mineralising pipe and middling cycle distribution ring are installed outward, magnetic mineral particles constantly carries out disperseing and reunites under pulsed magnetic field action, make to be mixed in gangue mineral wherein or lean intergrowth disengaging magnetic agglomerate, reduce and be mingled with degree, the gangue and the intergrowth that depart from magnetic coagulation are easy to be caught by bubble, together with bubble adhesion, be subject to the buoyancy being greater than gravity, overcome gravity to move upward to collect and become froth bed, overflow cylinder, magnetic mineral forms magnetic coagulation due to left magnetic effect, or monomer is subject to downward making a concerted effort, when downward active force be greater than upwards active force, through magnetic field, laminar flow sorts district, turbulent flow sorts district, turbulent flow sorts district, eddy flow sorts district, again two parts material is separated into, part material is of high grade, density is large, the centrifugal force be subject in eddy flow district is large, be thrown toward post jamb, move down along post jamb under the obstruction of post jamb and become iron ore concentrate discharge cylinder, the mixture density be mingled with containing magnetic is little, grade is low, the centrifugal force be subject to is little, rotate downwards in Yuan Bi district, move upward, move downward part and fall into middling cycle cone, middling cycle cone cone mouth diameter is 0.7 of column diameter, in middling cycle cone, material feeds middling cycle distribution ring, ore pulp in middling cycle distribution ring is through multiple jet bubble generator and chats mineralising pipe, tangentially feed cylinder eddy flow district, form a cyclic system.The partial density that moves upward is minimum, and grade is minimum, repeats to produce centrifugation through turbulent flow, turbulent flow, laminar flow field regions, forms a reciprocation cycle process, is rejected by impurity.For avoiding ore pulp to rotate at sorting post field regions eddy current further, suitably can set up sieve plate or increasing barretter length.
The preparation that inhibitor involved in the present invention, activator, collecting agent all adopt this area general, its component and content are known technology.
Claims (6)
1. a magnetic ore separation equipment, it comprises column magnetic separator, agitator, one section of magnetic flotation post and two sections of magnetic flotation posts, it is characterized in that: the underflow ore discharge pipe of described column magnetic separator is connected with the feed port of the first agitator, the overflow launder ore discharge pipe of column magnetic separator is connected with the overflow launder of two sections of magnetic flotation posts, the ore discharge pipe of the first agitator is connected with the feed port of the second agitator, the mine feeding bucket of the ore discharge Guan Yuyi section magnetic flotation post of the second agitator is connected, the overflow launder ore discharge pipe of one section of magnetic flotation post and being connected to ore deposit end of two sections of magnetic flotation posts; The mine feeding bucket of the underflow ore discharge Guan Yuyi section magnetic flotation post of two sections of magnetic flotation posts is connected; The overflow launder ore discharge pipe of two sections of magnetic flotation posts is connected with mining tailing system;
One section or/and two sections of magnetic flotation posts comprise overflow launder and sorting post, overflow launder is the staving of bottom angled, is fixed in sorting post upper outside bottom it, and overflow launder annularly inner wall even distribution has some froth breaking water pipes with shower nozzle; In sorting post, interval arranges some sieve plates; Be provided with magnetic system from top to bottom outside sorting post or in cylinder, magnetic is solenoid or permanent magnet; Sorting column bottom is connected with ore discharge device by flange, is provided with middling cycle cone in ore discharge device, and middling cycle cone bottom flows into hold with circulation slime dam and is connected; Sorting post sidewall is provided with microvesicle generators and jet mineralising pipe, and jet mineralising pipe is provided with jet bubble generator and middling cycle distributes ring, and jet mineralising pipe is connected with the outflow end of circulation slime dam.
2. magnetic ore separation equipment according to claim 1, is characterized in that: run through arranging some barretters under described one section of magnetic flotation post and/or two sections of magnetic flotation post sieve plates.
3. magnetic ore separation equipment according to claim 1 and 2, is characterized in that: be arranged on outside the magnetic system outside sorting post and be surrounded by non-magnet_conductible material.
4. magnetic ore separation equipment according to claim 3, is characterized in that: the scope of described magnetic system is 1/3 ~ 2/3 of sorting post height, and middling cycle cone cone mouth diameter is 0.4 ~ 0.85 of sorting column diameter.
5. a magnetic mineral method for separating, is characterized in that: it comprises the following steps:
1) feed: the center magnetic induction intensity of column magnetic separator is set as 10 ~ 500mT, magnetic mineral content is that the ore pulp of 20 ~ 50wt% is with 10 ~ 150m
3first the flow of/h feeds the mine feeding bucket of column magnetic separator, and column magnetic separator concentrate content is 20 ~ 50wt%, with 10 ~ 150m
3the flow of/h feeds the first agitator, adds inhibitor and activator simultaneously, mixed by ore pulp, feed second agitator, feed collecting agent and mix in the second agitator with medicament in the first agitator;
2) sorting: with 10 ~ 150m after the concentrate confection stirring of column magnetic separator
3the flow of/h feeds the mine feeding bucket of one section of magnetic flotation post, through magnetic flotation post give mining area, laminar flow divides constituency, turbulent region, eddy flow district, after ore pulp is subject to magnetic field force that magnetic induction intensity is 10 ~ 800mT, buoyancy, gravity, centrifugal force in the process, gangue and intergrowth follow foam becomes overflow, iron powder through filter, obtains finished iron fine powder as the underflow concentrate of one section of magnetic flotation post after filtration;
3) reclaim: the tailing foam of one section of magnetic flotation post is through 20 ~ 100m
3feed after the froth breaking Water spray froth breaking of/h two sections of magnetic flotation posts or magnetic separator to ore deposit end, the magnetic field intensity of two sections of magnetic flotation posts is 10 ~ 800mT, mine tailing is entered mining tailing system by the overflow launder ore discharge pipe of two sections of magnetic flotation posts or the mine tailing ore discharge pipe of magnetic separator, and the iron ore concentrate that magnetic separator sub-elects feeds grinding system.
6. magnetic mineral method for separating according to claim 5, is characterized in that: be selected from causticization starch in described inhibitor; Activator is selected from the one of NaOH or calcium oxide; Collecting agent is selected from ether amine, lauryl amine, ether amine and the compound drug of lauryl amine, the one or more than one of MH, MG.
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| CN2724842Y (en) * | 2004-08-17 | 2005-09-14 | 刘秉裕 | Magnetic dressing column |
| CN101648156A (en) * | 2009-08-14 | 2010-02-17 | 广州有色金属研究院 | Magnetic separation column device |
| CN102240587A (en) * | 2011-05-16 | 2011-11-16 | 成都利君实业股份有限公司 | Wet-type magnetic separation method of magnetite |
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2013
- 2013-01-23 CN CN201310025228.1A patent/CN103056028B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2724842Y (en) * | 2004-08-17 | 2005-09-14 | 刘秉裕 | Magnetic dressing column |
| CN101648156A (en) * | 2009-08-14 | 2010-02-17 | 广州有色金属研究院 | Magnetic separation column device |
| CN102240587A (en) * | 2011-05-16 | 2011-11-16 | 成都利君实业股份有限公司 | Wet-type magnetic separation method of magnetite |
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| CN103056028A (en) | 2013-04-24 |
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