CN108816508A - A kind of asbestos tailings wind magnetic joint dry type iron-extracting process - Google Patents
A kind of asbestos tailings wind magnetic joint dry type iron-extracting process Download PDFInfo
- Publication number
- CN108816508A CN108816508A CN201810428221.7A CN201810428221A CN108816508A CN 108816508 A CN108816508 A CN 108816508A CN 201810428221 A CN201810428221 A CN 201810428221A CN 108816508 A CN108816508 A CN 108816508A
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- China
- Prior art keywords
- magnetic
- wind
- dry
- iron
- asbestos tailings
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Classifications
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- 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
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
-
- 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
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/16—Magnetic separation acting directly on the substance being separated with material carriers in the form of belts
- B03C1/18—Magnetic separation acting directly on the substance being separated with material carriers in the form of belts with magnets moving during operation
-
- 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
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/01—Selective separation of solid materials carried by, or dispersed in, gas currents using gravity
-
- 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
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/02—Selective separation of solid materials carried by, or dispersed in, gas currents by reversal of direction of flow
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention belongs to technical field of mineral processing, are related to a kind of asbestos tailings wind magnetic joint dry type iron-extracting process；Aiming at the problem that present invention is low asbestos tailings iron-content, the tacky influence of fine grinding sorts, provide a kind of asbestos tailings magnetic, wind, wind inhale joint dry type iron-extracting process, dry separation iron concentrate grade reaches 60% or more, for anhydrous mine or because environmental issue needs the mine of technological transformation to provide technical guarantee, tailing can be used as the raw material for extracting the valuable minerals such as residual asbestos, silicic acid magnesium crystal after mentioning iron.
Description
Technical field
The invention belongs to technical field of mineral processing, are related to a kind of asbestos tailings wind magnetic joint dry type iron-extracting process.
Background technique
Asbestos tailings are the tailings generated in asbestos exploitation and ore dressing process, contain more short fiber asbestos.It big
Amount is stacked, not only land occupation, pollution environment, and also results in the waste of resource.Gansu acthar, Qinghai asbestos mining area belong to
In big mineral zone, asbestos tailings accumulating amount is dry due to being located in plateau up to more than 200,000,000 tons, easily fugitive dust with the wind, right
When asbestos tailings mention iron, short fiber asbestos form aerosol, generate serious pollution to the air in lower wind direction area.
Summary of the invention
It is dry in order to solve the problems in the prior art, the purpose of the present invention is to providing a kind of asbestos tailings wind magnetic joint of environmental protection
Formula iron-extracting process.
Concrete scheme of the invention is as follows：
A kind of asbestos tailings wind magnetic joint dry type iron-extracting process, it is characterised in that：Specifically include following steps：
A. the asbestos tailings of iron content 5-6%, granularity -10mm are crushed to by -3mm using hammer mill；
B. pre-selection throwing is carried out to -3mm grade the asbestos tailings that step A is obtained using the screw dry magnetic separator of field strength 3000Oe
It is useless；
C. it is dry grinded using ball mill to -0.8mm to the pre- concentrate selection that step B is obtained, then uses field strength 2000Oe screw dry magnetic
It selects machine to carry out roughing, when being milled to -0.6mm or less due to asbestos tailings, that is, mountain flax fiber occurs, cause material tacky, no
Conducive to subsequent dry separation, therefore, grinding particle size will be controlled in -0.8mm, be carried out using field strength 2000Oe screw dry magnetic separator thick
Choosing reduces fine grinding ore concentrate amount；
D. the obtained rougher concentration of step C is fed again into ball mill and dry grinded and account for 90-95% to -0.48mm, be sent by distributing device flat
Plate wind magnetic joint dry-dressing machine progress magnetic, wind, wind suction joint dry type are selected, obtain iron ore concentrate.
Plate wind magnetic joint dry-dressing machine of the invention includes conveyer belt, plate magnetic stripe, blower and blower cover, the plate
Magnetic stripe is located at below conveyer belt conveyor surface, and blower cover is located above conveyer belt conveyor surface, and blower is located in blower cover and equal
Even to be arranged in above conveyer belt conveyor surface, the blower is arranged in parallel with respect to conveyer belt transverse direction, and blowing bottom of the tube is uniform
It is placed with air outlet.
In step D of the invention, dry grinding to -0.48mm is accounted for into 90-95 coarse-fine mineral material, plate wind is laid in by distributing device
Magnetic is combined on the conveyer belt of dry-dressing machine, and iron ore concentrate is sucked the plate magnetic stripe of field strength 1000Oe, and iron ore concentrate is magneted on conveyer belt
It turns at no magnetic belt pulley for feeding foil and unloads down with conveyer belt；Blower, blower bottom are uniformly placed with above conveyer belt at 10mm
Portion is equipped with the air outlet of two rows φ 0.2mm, to charge level air blast, disk pack is wrapped up in material and dispels, open, not magnetic tailing
And filamentary fibers blow afloat and, then are siphoned away by 50mm above material equipped with blower cover, to complete the work that screens out of tailing, and shut out
Environmental pollution absolutely.
The invention has the advantages that：
The present invention is low asbestos tailings iron-content, the tacky influence of fine grinding is aiming at the problem that sort, provide a kind of asbestos tailings magnetic,
Wind, wind inhale joint dry type iron-extracting process, and dry separation iron concentrate grade reaches 60% or more, need for anhydrous mine or because of environmental issue
The mine of technological transformation provides technical guarantee, and tailing can be used as the valuable minerals such as extraction residual asbestos, silicic acid magnesium crystal after mentioning iron
Raw material.
Detailed description of the invention
Fig. 1 is process flow chart of the invention；
Fig. 2 is the structural schematic diagram that plate wind magnetic of the invention combines dry-dressing machine；
Fig. 3 is the side view of Fig. 2.
Specific embodiment
It carries out proposing iron operation using the asbestos tailings of method of the invention to Qinghai asbestos deposit.
Embodiment 1
A. the asbestos tailings of iron content 5%, granularity -10mm are crushed to by -3mm using hammer mill；
B. pre-selection throwing is carried out to -3mm grade the asbestos tailings that step A is obtained using the screw dry magnetic separator of field strength 3000Oe
It is useless, pre-selection concentrate grade 15%, pre-selection concentrate yield 19%, tailings grade 2.65%, tailing yield 81%；
C. it is dry grinded using ball mill to -0.8mm to the pre- concentrate selection that step B is obtained, then uses field strength 2000Oe screw dry magnetic
Machine is selected to carry out roughing, rougher concentration grade 40%, rougher concentration yield 30%, comprehensive rough concentrate yield 5.7%, rougher tailings grade
4.28%, rougher tailings yield 70%, comprehensive tailing yield 13.3%；
D. the obtained rougher concentration of step C is fed again into ball mill and dry grinded and account for 90-95% to -0.48mm, be sent by distributing device flat
Plate wind magnetic joint dry-dressing machine progress magnetic, wind, wind suction joint dry type are selected, obtain iron ore concentrate；
F. roughing, cleaner tailings are thrown with pre-selection and press qualified tailings discharge together with the barren rock that gives up, and comprehensive tailings grade 2.98% is sent under
Procedure extracts other useful elements.
Embodiment 2
A. the asbestos tailings of iron content 6%, granularity -10mm are crushed to by -3mm using hammer mill；
B. pre-selection throwing is carried out to -3mm grade the asbestos tailings that step A is obtained using the screw dry magnetic separator of field strength 3000Oe
It is useless, pre-selection concentrate grade 15.5%, pre-selection concentrate yield 22%, tailings grade 3.3%, tailing yield 78%；
C. it is dry grinded using ball mill to -0.8mm to the pre- concentrate selection that step B is obtained, then uses field strength 2000Oe screw dry magnetic
Machine is selected to carry out roughing, rougher concentration grade 42%, rougher concentration yield 30%, comprehensive rough concentrate yield 6.6%, rougher tailings grade
4.14%, rougher tailings yield 70%, comprehensive tailing yield 15.4%；
D. the obtained rougher concentration of step C is fed again into ball mill and dry grinded and account for 90-95% to -0.48mm, be sent by distributing device flat
Plate wind magnetic joint dry-dressing machine progress magnetic, wind, wind suction joint dry type are selected, obtain iron ore concentrate, selected concentrate is final iron ore concentrate
Product, iron concentrate grade 61%, selected iron ore concentrate yield 64%, iron ore concentrate comprehensive yied 4.22%, cleaner tailings grade 7.78%, essence
Select tailing yield 36%, comprehensive tailing yield 2.38%.Iron concentrate grade 61%, comprehensive tailings grade 3.6%, metal recovery rate are
42.9%；
F. roughing, cleaner tailings are thrown with pre-selection and press qualified tailings discharge together with the barren rock that gives up, and comprehensive tailings grade 3.6% is sent under
Procedure extracts other useful elements.
Plate wind magnetic joint dry-dressing machine of the invention includes conveyer belt 1, plate magnetic stripe 2, blower 3 and blower cover 4, described
Plate magnetic stripe 2 is located at below 1 conveyor surface of conveyer belt, and blower cover 4 is located above 1 conveyor surface of conveyer belt, and blower 3 is located at blower cover
It is arranged in 4 and uniformly above 1 conveyor surface of conveyer belt, opposite 1 transverse direction of conveyer belt of the blower 3 is arranged in parallel, and blows
3 bottom of air hose is uniformly placed with air outlet.
The plate wind magnetic joint dry-dressing machine the course of work be：
Dry grinding to -0.48mm is accounted for into 90-95 coarse-fine mineral material, the conveyer belt 1 that plate wind magnetic combines dry-dressing machine is laid in by distributing device
On, iron ore concentrate is sucked the plate magnetic stripe 2 of field strength 1000Oe, and iron ore concentrate is magneted on conveyer belt 1 and turns to no magnetic with conveyer belt 1
It is unloaded down at belt pulley for feeding foil；Blower 3 is uniformly placed at 1 top 10mm of conveyer belt, 3 bottom of blower is equipped with two rows φ
Disk pack is wrapped up in material and dispels, opens, not magnetic tailing and filamentary fibers are blown to charge level air blast by the air outlet of 0.2mm
Get up, then blower cover 4 is equipped with by 50mm above material and is siphoned away, to complete the work that screens out of tailing, and has prevented environment dirt
Dye.
Claims (3)
1. a kind of asbestos tailings wind magnetic combines dry type iron-extracting process, it is characterised in that：Specifically include following steps：
A. the asbestos tailings of iron content 5-6%, granularity -10mm are crushed to by -3mm using hammer mill；
B. pre-selection throwing is carried out to -3mm grade the asbestos tailings that step A is obtained using the screw dry magnetic separator of field strength 3000Oe
It is useless；
C. it is dry grinded using ball mill to -0.8mm to the pre- concentrate selection that step B is obtained, then uses field strength 2000Oe screw dry magnetic
Machine is selected to carry out roughing；
D. the obtained rougher concentration of step C is fed again into ball mill and dry grinded and account for 90-95% to -0.48mm, be sent by distributing device flat
Plate wind magnetic joint dry-dressing machine progress magnetic, wind, wind suction joint dry type are selected, obtain iron ore concentrate.
2. a kind of asbestos tailings wind magnetic as described in claim 1 combines dry type iron-extracting process, it is characterised in that：The step D
In plate wind magnetic joint dry-dressing machine include conveyer belt (1), plate magnetic stripe (2), blower (3) and blower cover (4), the plate
Magnetic stripe (2) is located at below conveyer belt (1) conveyor surface, and blower cover (4) is located above conveyer belt (1) conveyor surface, and blower (3) is located at
It is arranged in blower cover (4) and uniformly above conveyer belt (1) conveyor surface.
3. a kind of asbestos tailings wind magnetic as claimed in claim 2 combines dry type iron-extracting process, it is characterised in that：The blower
(3) opposite conveyer belt (1) transverse direction is arranged in parallel, and blower (3) bottom is uniformly placed with air outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810428221.7A CN108816508A (en) | 2018-05-07 | 2018-05-07 | A kind of asbestos tailings wind magnetic joint dry type iron-extracting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810428221.7A CN108816508A (en) | 2018-05-07 | 2018-05-07 | A kind of asbestos tailings wind magnetic joint dry type iron-extracting process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108816508A true CN108816508A (en) | 2018-11-16 |
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ID=64148262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810428221.7A Pending CN108816508A (en) | 2018-05-07 | 2018-05-07 | A kind of asbestos tailings wind magnetic joint dry type iron-extracting process |
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| CN (1) | CN108816508A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109909065A (en) * | 2019-02-28 | 2019-06-21 | 玉溪大红山矿业有限公司 | A kind of beneficiation method of low-grade building stones screenings |
| CN109939822A (en) * | 2019-02-28 | 2019-06-28 | 玉溪大红山矿业有限公司 | A kind of method that low-grade building stones screenings reduces bulk density |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921534A (en) * | 2012-11-07 | 2013-02-13 | 牛庆君 | Method for recycling iron from serpentine asbestos rock type asbestos tailings |
| CN104028374A (en) * | 2014-05-31 | 2014-09-10 | 毕辅成 | Magnetic separation device for iron ore powder |
| CN107365903A (en) * | 2017-07-11 | 2017-11-21 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of refractory iron ore synthesis mine tailing magnetizing roast dry grinding dry separation craft |
-
2018
- 2018-05-07 CN CN201810428221.7A patent/CN108816508A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921534A (en) * | 2012-11-07 | 2013-02-13 | 牛庆君 | Method for recycling iron from serpentine asbestos rock type asbestos tailings |
| CN104028374A (en) * | 2014-05-31 | 2014-09-10 | 毕辅成 | Magnetic separation device for iron ore powder |
| CN107365903A (en) * | 2017-07-11 | 2017-11-21 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of refractory iron ore synthesis mine tailing magnetizing roast dry grinding dry separation craft |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109909065A (en) * | 2019-02-28 | 2019-06-21 | 玉溪大红山矿业有限公司 | A kind of beneficiation method of low-grade building stones screenings |
| CN109939822A (en) * | 2019-02-28 | 2019-06-28 | 玉溪大红山矿业有限公司 | A kind of method that low-grade building stones screenings reduces bulk density |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181116 |