CN108144741B - Method for improving grade of boron concentrate by removing iron through high-gradient vertical ring magnetic separator - Google Patents
Method for improving grade of boron concentrate by removing iron through high-gradient vertical ring magnetic separator Download PDFInfo
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- CN108144741B CN108144741B CN201611101057.6A CN201611101057A CN108144741B CN 108144741 B CN108144741 B CN 108144741B CN 201611101057 A CN201611101057 A CN 201611101057A CN 108144741 B CN108144741 B CN 108144741B
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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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
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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
- B03C1/002—High gradient magnetic separation
Abstract
The invention relates to the technical field of mineral processing, in particular to a method for improving the grade of boron concentrate by removing iron by a high-gradient vertical ring magnetic separator, which is characterized by comprising the following steps: firstly, conveying coarse boron concentrate in the form of ore pulp to a high-gradient vertical ring magnetic separator; secondly, adjusting the current of the high-gradient vertical ring magnetic separator in the step (1) to enable the background field intensity to be 0.6T; thirdly, collecting weak magnetic ore vertical ring concentrate adsorbed by the vertical ring medium in the step (2) as boron tailings, wherein the vertical ring tailing slurry not adsorbed by the medium is final boron concentrate slurry; the method reduces the beneficiation and processing cost and improves the comprehensive utilization level of the low-grade uranium, boron and iron associated ore.
Description
Technical Field
The invention relates to the technical field of mineral processing, in particular to a low-grade uranium, boron and iron associated ore beneficiation process adopting a high-pressure roller mill.
Background
The boron ore deposit with the symbiosis of boron and iron comprises magnetite and ludwigite as main ore minerals, and fiber ludwigite, tunneling stone and crystalline uranium ore as secondary ore minerals. Iron, boron and uranium are important raw materials of steel, chemical industry and energy, but primary ores are fine in embedded granularity of useful minerals, complex in intergrowth characteristics, and cause a lot of difficulties in comprehensive utilization of the ores.
The existing ore dressing process mainly adopts a two-section grinding classification-two-section magnetic separation process to recover iron ore concentrate, the two-section magnetic separation comprehensive tailings are screened into two size fractions and then reselected to recover uranium ore concentrate, and the reselected tailings utilize a hydrocyclone to classify boron ore concentrate. The process has the outstanding problems that the power consumption of ore grinding is high, the treatment capacity of the ore dressing process is low, the dissociation of iron and boron monomers is insufficient, particularly, when the treatment capacity of the ore dressing process is improved, the ore grinding granularity is reduced to cause the coarse granularity of magnetic separation tailings, the dissociation condition of uranium cannot be achieved, the quality of uranium concentrate is unstable, and meanwhile, due to the reason of ore dilution, the boron grade of an ore entering grinding raw ore is only 4-5%, the boron grade of a section of weak magnetic tailings is only 5-6%, and the boron concentrate grade is influenced and discarded after being combined with a section of weak magnetic tailings, so that the waste of resources is caused.
Disclosure of Invention
The invention aims to provide a low-grade uranium-boron-iron associated ore beneficiation process adopting a high-pressure roller mill, which utilizes the characteristics that useful minerals of iron, boron and uranium in ores in a mining area are densely symbiotic and gangue minerals and useful minerals are not closely embedded, realizes tailless beneficiation after high-pressure roller milling super fine crushing and coarse grain tailing discarding, and improves the comprehensive utilization level of the type of associated ore resources: the crushing granularity is reduced from 12-0mm to 5-0 mm by adopting a high-pressure roller mill, meanwhile, the grindability of ore is improved, the grinding efficiency is improved, most of gangue containing surrounding rock is discarded in advance by coarse grain tailing discarding, the grinding amount is reduced, the granularity is strictly controlled by adopting a mode of combining a cyclone and a screening machine for grading in a first-stage closed-circuit grinding, iron and boron in stage grinding products are better separated under the conventional grinding condition, the boron grade of one-stage weak magnetic tailings is improved from 5-6% to 8-9% and is not discarded, after the first-stage weak magnetic tailings and the second-stage weak magnetic tailings are mixed, the recovery rate of final boron concentrate is improved to 47.36%, the recovery rate is greatly improved compared with 35% in the prior art, the gravity separation flow is simplified, and the uranium concentrate can be obtained by respectively performing gravity separation treatment by directly utilizing the difference of the granularity.
The purpose of the invention is realized by the following technical scheme:
a method for improving the grade of boron concentrate by removing iron by a high-gradient vertical ring magnetic separator comprises the following steps:
firstly, conveying coarse boron concentrate in the form of ore pulp to a high-gradient vertical ring magnetic separator;
secondly, adjusting the current of the high-gradient vertical ring magnetic separator in the step (1) to enable the background field intensity to be 0.6T;
thirdly, collecting weak magnetic ore vertical ring concentrate adsorbed by the vertical ring medium in the step (2) as boron tailings, wherein the vertical ring tailing slurry not adsorbed by the medium is final boron concentrate slurry;
the preparation process of the crude boron concentrate comprises the following steps:
(1) feeding the crushed raw ore material with the size of 12-0mm into a high-pressure roller mill for rolling, mixing the discharged material of the high-pressure roller mill with water to form ore pulp, feeding the ore pulp into a wet sieving machine, mixing coarse particles on a sieve with the raw material, conveying the mixture to the high-pressure roller mill again for rolling, and conveying the sieved ore pulp as an ultrafine crushed product to the next process;
(2) carrying out coarse grain tailing discarding magnetic separation on the ore pulp obtained in the step (1), and discarding gangue minerals containing surrounding rocks as tailings I; the rest is the selected magnetic concentrate I and enters the next working procedure;
(3) carrying out primary grinding on the magnetic concentrate I selected in the step (2) through a first-stage closed circuit grinding system, and controlling the granularity of an output product to be 50-55% of the content of 74 mu m (in weight, the same applies below);
(4) carrying out primary low-intensity magnetic separation on the product obtained in the step (3) to obtain magnetic concentrate II and tailings II, wherein the magnetic concentrate II is subjected to a second-stage closed circuit grinding process, and the tailings II are subjected to a fine sand gravity separation process to be recycled to obtain uranium concentrate I;
(5) levigating the magnetic concentrate II obtained in the step (4) through a two-stage closed circuit grinding system, and controlling the granularity of an output product to be 74 mu m and the content to be 90 percent;
(6) carrying out weak magnetic concentration on the product obtained in the step (5) to obtain magnetic concentrate III and tailings III, and filtering the magnetic concentrate III to obtain boron-containing iron fine powder;
(7) feeding the tailings III into a fine mud gravity separation process to recover uranium concentrate II, combining the uranium concentrate I and the uranium concentrate II into uranium concentrate III, and feeding the uranium concentrate III to a hydrometallurgy plant to recover uranium;
(8) and (3) respectively carrying out gravity separation on the tailings II and III in the steps (4) and (6) to recover uranium concentrate, merging the gravity tailings together, and sending the merged tailings to the next procedure, wherein the next procedure is to remove iron by a cyclone separator after coarse removal to obtain coarse boron concentrate.
The invention has the advantages and positive effects that:
(1) the crushing ratio of the high-pressure roller grinding is advanced sufficiently to realize the mineral separation principle of more crushing and less grinding, and the grindability of the raw materials is improved after the raw materials are rolled by the high pressure roller, so that the passing capacity of a mineral separation system is improved, the energy is saved, and the consumption is reduced;
(2) according to the invention, the characteristic coarse grain tailing discarding of the ore is utilized, so that most of surrounding rocks and gangue in the traditional crushing process are prevented from entering a grinding system, the ore dressing principle of throwing and early discarding is met, the energy consumption is further reduced, and the green development requirement is met;
(3) in the invention, the granularity of the closed circuit grinding product is strictly controlled by adopting a mode of combining a cyclone and a sieving machine for grading, so that the ore dressing process of two-stage grinding grading and two-stage magnetic separation can better separate iron and boron under the condition of conventional grinding granularity;
(4) the process flow has the advantages that the monomer dissociation degree of the associated resources is high, the boron trioxide of the boron concentrate is high in recovery rate and grade;
(5) according to the process flow, the grain size composition of the first-stage weak magnetic tail and the second-stage weak magnetic tail both reach the condition of recycling the uranium concentrate, the screening process is omitted in the gravity separation process, the gravity separation process is simplified, the quality stability of the uranium concentrate is improved, and the recovery rate is improved;
(6) the process flow disclosed by the invention has the advantages that the comprehensive utilization rate of mineral resources is high, the iron recovery rate of the iron concentrate is 83.65%, the recovery rate of diboron trioxide in the boron concentrate reaches 47.36%, and the recovery rate of uranium in the uranium concentrate reaches 38.01%.
Drawings
FIG. 1 is a flow chart of the high-pressure roller milling coarse-grain tailing-discarding mineral separation process.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the present invention comprises the steps of:
(1) feeding the crushed raw ore material with 12-0mm of iron grade, 25.14% of boron trioxide grade, 4.14% of uranium grade and 0.0052% of uranium grade into a high-pressure roller mill for rolling, mixing the discharged material of the high-pressure roller mill with 2-3 times of water to form ore pulp, feeding the ore pulp into a wet sieving machine, mixing the oversize coarse particles with the raw material, conveying the mixture to the high-pressure roller mill again for rolling, and conveying the sieved ore pulp as a superfine crushed product to the next process;
(2) carrying out coarse-grain tailing discarding magnetic separation on the ore pulp obtained in the step (1), wherein gangue minerals containing 27.85% of surrounding rock are used as tailings I, the rest gangue minerals are selected magnetic concentrates I, the iron grade of the magnetic concentrates I is 5.86%, and the loss rate is 6.49%; the grade of the diboron trioxide is 1.39 percent, and the loss rate is 9.35 percent; the uranium grade is 0.0033 percent, and the loss rate is 17.68 percent; the selected magnetic concentrate I enters the next procedure;
(3) carrying out primary grinding on the magnetic concentrate I selected in the step (2) through a first-stage closed circuit grinding system, and controlling the granularity of an output product to be 74 mu m and the content to be 50-55%;
(4) carrying out primary low-intensity magnetic separation on the product obtained in the step (3) to obtain magnetic concentrate II and tailings II, wherein the magnetic concentrate II is subjected to a two-stage closed circuit grinding process, and the tailings II are subjected to fine sand gravity separation process for recovery to obtain uranium concentrate I with the uranium grade of 0.1082% and the recovery rate of 23.92%;
(5) levigating the magnetic concentrate II obtained in the step (4) through a two-stage closed circuit grinding system, and controlling the granularity of an output product to be 74 mu m and the content to be 90 percent;
(6) performing weak magnetic concentration on the product obtained in the step (5) to obtain magnetic concentrate III and tailings III, wherein the magnetic concentrate III is filtered to produce boron-containing iron concentrate powder, the iron grade is 58-60%, and the recovery rate is more than 83%;
(7) the grade of uranium recovered by the tailings III in a fine mud gravity separation process is 0.1109%, the recovery rate is 17.74% of uranium concentrate II, the uranium concentrate I and the uranium concentrate II are combined into uranium concentrate III which is supplied to a hydrometallurgy plant, and the total recovery rate of the uranium grade is 0.1092% and is 38.01%;
(8) and (3) respectively carrying out gravity separation on the tailings II and III in the steps (4) and (6) to recover uranium concentrate, merging gravity-separated tailings, sending the merged tailings into a cyclone in the next procedure for coarse separation, and then removing iron by using a high-gradient vertical ring magnetic separator to obtain boron concentrate, wherein the grade of boron trioxide is 11.47%, and the recovery rate is 47.36%.
In this embodiment:
the model of the high-pressure roller mill used in the step (1) is GM160-140, the crushing granularity is reduced from-10 mm to 0 to-5 mm to 0, the screening machine I is a five-layer high-efficiency screening machine, and the mass concentration of the ore pulp is 40-45%;
performing coarse grain tailing magnetic separation on the ore pulp in the step (2) by adopting a wet permanent magnet drum magnetic separator, wherein the wet permanent magnet drum magnetic separator adopts a downstream type machine groove, and the magnetic induction intensity of the wet permanent magnet drum magnetic separator is 0.5T;
the first-stage closed-circuit ore grinding system in the step (3) comprises a mill I, materials are input into the mill to be ground and then are classified by using a hydrocyclone, the hydraulic classification is a known technology in the field, overflow fine-grained products of the hydrocyclone are fed into a five-layer high-efficiency screening machine II, oversize coarse grains and underflow coarse grains of the hydrocyclone are returned to the mill to be ground, undersize grains meeting the output product requirements directly enter the first-stage weak magnetic separation process in the step (4), and the mill I is an overflow ball mill.
In the step (4), a wet permanent magnet drum magnetic separator is adopted for the first-stage weak magnetic separation, a semi-countercurrent machine groove is adopted for the wet permanent magnet drum magnetic separator, and the magnetic induction intensity is 0.13T;
and (3) the second-stage closed circuit ore grinding system in the step (5) comprises a mill II and a screening machine III, wherein the grains which are screened to meet the output product requirement enter the second-stage weak magnetic separation process in the step (6), the remaining grains which are not screened are sent to the mill II for regrinding, the mill II is an overflow type ball mill, and the screening machine III is a four-layer electromagnetic vibration high-frequency vibrating screen.
In the step (6), a double-roller wet type permanent magnet drum magnetic separator is adopted for the two-stage low-intensity magnetic separation, a semi-countercurrent type machine groove is adopted for the double-roller wet type permanent magnet drum magnetic separator, and the magnetic induction intensities are respectively 0.115T and 0.165T;
the tailings in the steps (4) and (6) adopt a reselection mode, which is a known technology in the field;
in the iron removal process of the boron concentrate in the step (8), a high-gradient vertical ring magnetic separator is adopted to improve the grade of the boron concentrate by 1%, wherein the diameter of the high-gradient vertical ring magnetic separator is 2.5m, and the background field intensity is 0.6T;
the cyclone de-coarsening in step (8) is a technique well known in the art.
In this embodiment, the slurry is delivered by a slurry pump and a pipeline.
In the research and development process, the effects of the steps are verified through a high-pressure roller grinding superfine grinding test, a relative grindability test of a superfine grinding product, a coarse grain tailing discarding magnetic separation test, a magnetic concentrate stage grinding first-stage and second-stage grinding capacity matching test after coarse grain tailing discarding and the like.
The effect of the above steps is verified by experiments below.
1. Analyzing the particle size before and after high-pressure roller grinding:
2. comparative test of relative grindability before and after high-pressure roller grinding:
under the same grinding test conditions, when the new-74 mu m particle size fraction content is 95%, the time of the superfine crushed product is shorter than that of the raw ore before superfine crushing, the product is relatively easy to grind, and the ratio is as follows:
K＝9.7/12.1＝0.802
3. the coarse grain tailing discarding magnetic separation indexes are shown in the following table:
4. and (3) carrying out capability matching test on the first-stage grinding and second-stage closed circuit grinding system.
In the prior art, the raw ore processing capacity of a single-series beneficiation process is 140t/h, the first-stage grinding graded overflow is subjected to magnetic separation, the material with the content of minus 74 mu m of the second-stage closed circuit grinding is fed into the first-stage closed circuit grinding, and the content of the final iron ore concentrate with the content of minus 74 mu m is 81.25 percent. According to the invention, the high-pressure roller grinding superfine material is subjected to coarse grain tailing discarding, ore grinding tests and the like, and finally, the first-stage and second-stage ore grinding loads are re-matched as follows: the processing capacity of the single-series mineral processing technology is improved to 181.51t/h, the content of the first-stage closed circuit grinding ore product is 45.71 percent of minus 74 mu m after magnetic separation, and the content of the final iron ore concentrate is 90.89 percent of minus 74 mu m.
Claims (1)
1. A method for improving the grade of boron concentrate by removing iron by a high-gradient vertical ring magnetic separator is characterized by comprising the following steps:
firstly, conveying coarse boron concentrate in the form of ore pulp to a high-gradient vertical ring magnetic separator;
secondly, adjusting the current of the high-gradient vertical ring magnetic separator in the step (1) to enable the background field intensity to be 0.6T;
thirdly, collecting weak magnetic ore vertical ring concentrate adsorbed by the vertical ring medium in the step (2) as boron tailings, wherein the vertical ring tailing slurry not adsorbed by the medium is final boron concentrate slurry;
the preparation process of the crude boron concentrate comprises the following steps:
(1) feeding the crushed raw ore material with the size of 12-0mm into a high-pressure roller mill for rolling, mixing the discharged material of the high-pressure roller mill with water to form ore pulp, feeding the ore pulp into a wet sieving machine, mixing coarse particles on a sieve with the raw material, conveying the mixture to the high-pressure roller mill again for rolling, and conveying the sieved ore pulp as an ultrafine crushed product to the next process;
(2) carrying out coarse grain tailing discarding magnetic separation on the screened ore pulp obtained in the step (1), and discarding gangue minerals containing surrounding rocks as tailings I; the rest is the selected magnetic concentrate I and enters the next working procedure;
(3) carrying out primary grinding on the magnetic concentrate I selected in the step (2) through a first-stage closed circuit grinding system, and controlling the content of the granularity of an output product to be 50-55% of-74 mu m;
(4) carrying out primary low-intensity magnetic separation on the product obtained in the step (3) to obtain magnetic concentrate II and tailings II, wherein the magnetic concentrate II is subjected to a second-stage closed circuit grinding process, and the tailings II are subjected to a fine sand gravity separation process to be recycled to obtain uranium concentrate I;
(5) levigating the magnetic concentrate II obtained in the step (4) through a two-stage closed circuit grinding system, and controlling the granularity of an output product to be 74 mu m and the content to be 90 percent;
(6) carrying out weak magnetic concentration on the product obtained in the step (5) to obtain magnetic concentrate III and tailings III, and filtering the magnetic concentrate III to obtain boron-containing iron fine powder;
(7) feeding the tailings III into a fine mud gravity separation process to recover uranium concentrate II, combining the uranium concentrate I and the uranium concentrate II into uranium concentrate III, and feeding the uranium concentrate III to a hydrometallurgy plant to recover uranium;
(8) and (3) respectively carrying out gravity separation on the tailings II obtained in the step (4) and the tailings III obtained in the step (6) to recover uranium concentrate, merging the gravity separated tailings together, and sending the merged tailings into the next procedure, wherein the next procedure is to remove iron by a cyclone separator after coarse removal to obtain coarse boron concentrate.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4132383C1 (en) * | 1991-09-28 | 1993-05-27 | Egon 5650 Solingen De Kluthe | Arrangement for sepg. weakly magnetic impurities from e.g. cooling liquids - includes transport surface with associated magnet device, and nozzle above surface to supply coolant liq. |
| CN101502819A (en) * | 2009-03-25 | 2009-08-12 | 中钢集团马鞍山矿山研究院有限公司 | Pre-selection method of low-ore grade magnetic iron ore |
| CN103785518A (en) * | 2014-02-28 | 2014-05-14 | 重钢西昌矿业有限公司 | Method for comprehensively recycling ultra-lean vanadium-titanium magnetite ores |
| CN104258980A (en) * | 2014-09-15 | 2015-01-07 | 中冶北方（大连）工程技术有限公司 | Uranium-bearing paigeite separating process |
| CN105032610A (en) * | 2015-09-16 | 2015-11-11 | 鞍钢集团矿业公司 | High-pressure roller selective comminuting and magnetic separating method for lean magnetite ore |
| CN105107616A (en) * | 2015-09-22 | 2015-12-02 | 赣州金环磁选设备有限公司 | Low-cost high-recovery environment-friendly mineral separation method of low-grade vanadium titano-magnetite |
-
2016
- 2016-12-05 CN CN201611101057.6A patent/CN108144741B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4132383C1 (en) * | 1991-09-28 | 1993-05-27 | Egon 5650 Solingen De Kluthe | Arrangement for sepg. weakly magnetic impurities from e.g. cooling liquids - includes transport surface with associated magnet device, and nozzle above surface to supply coolant liq. |
| CN101502819A (en) * | 2009-03-25 | 2009-08-12 | 中钢集团马鞍山矿山研究院有限公司 | Pre-selection method of low-ore grade magnetic iron ore |
| CN103785518A (en) * | 2014-02-28 | 2014-05-14 | 重钢西昌矿业有限公司 | Method for comprehensively recycling ultra-lean vanadium-titanium magnetite ores |
| CN104258980A (en) * | 2014-09-15 | 2015-01-07 | 中冶北方（大连）工程技术有限公司 | Uranium-bearing paigeite separating process |
| CN105032610A (en) * | 2015-09-16 | 2015-11-11 | 鞍钢集团矿业公司 | High-pressure roller selective comminuting and magnetic separating method for lean magnetite ore |
| CN105107616A (en) * | 2015-09-22 | 2015-12-02 | 赣州金环磁选设备有限公司 | Low-cost high-recovery environment-friendly mineral separation method of low-grade vanadium titano-magnetite |
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