CN117019376A - Ore dressing and grinding process method for hematite - Google Patents
Ore dressing and grinding process method for hematite Download PDFInfo
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- CN117019376A CN117019376A CN202311145554.6A CN202311145554A CN117019376A CN 117019376 A CN117019376 A CN 117019376A CN 202311145554 A CN202311145554 A CN 202311145554A CN 117019376 A CN117019376 A CN 117019376A
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- Prior art keywords
- copper
- scavenging
- concentrate
- sulfur
- mixed
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000000227 grinding Methods 0.000 title claims abstract description 22
- 229910052595 hematite Inorganic materials 0.000 title claims abstract description 18
- 239000011019 hematite Substances 0.000 title claims abstract description 18
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 239000012141 concentrate Substances 0.000 claims abstract description 79
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 70
- 230000002000 scavenging effect Effects 0.000 claims abstract description 58
- 239000000463 material Substances 0.000 claims abstract description 43
- BWFPGXWASODCHM-UHFFFAOYSA-N copper monosulfide Chemical compound [Cu]=S BWFPGXWASODCHM-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000006148 magnetic separator Substances 0.000 claims abstract description 36
- 229910052742 iron Inorganic materials 0.000 claims abstract description 35
- 238000000926 separation method Methods 0.000 claims abstract description 32
- 238000007885 magnetic separation Methods 0.000 claims abstract description 26
- 238000000498 ball milling Methods 0.000 claims abstract description 25
- 238000005188 flotation Methods 0.000 claims abstract description 23
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 239000002893 slag Substances 0.000 claims abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 24
- 229910052802 copper Inorganic materials 0.000 claims description 24
- 239000010949 copper Substances 0.000 claims description 24
- 238000001914 filtration Methods 0.000 claims description 23
- 238000001556 precipitation Methods 0.000 claims description 15
- VRRFSFYSLSPWQY-UHFFFAOYSA-N sulfanylidenecobalt Chemical compound [Co]=S VRRFSFYSLSPWQY-UHFFFAOYSA-N 0.000 claims description 12
- 239000002244 precipitate Substances 0.000 claims description 9
- 239000002002 slurry Substances 0.000 claims description 5
- 239000000706 filtrate Substances 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 7
- 239000011707 mineral Substances 0.000 abstract description 7
- 238000011084 recovery Methods 0.000 abstract description 5
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a hematite ore dressing and grinding process method, which comprises the following steps: A. the crushed ore enters a ball milling ore bin for storage, crushed materials in the ball milling ore bin enter a first-stage ball milling, a first grading and a second grading, tailings after the second grading enter a second-stage ball milling, and concentrate obtained through the second grading enters a flotation machine for copper-sulfur mixed roughing; B. the copper-sulfur mixed material and the iron-containing mixed material which are roughly separated by copper-sulfur mixing respectively enter a mixing concentration step and a mixing scavenging step, the refined material of the mixing concentration step enters a mixing concentration step, the refined material of the mixing concentration step enters a copper-sulfur mixing concentration large well, and the concentrated material in the copper-sulfur mixing concentration large well is subjected to copper-sulfur separation operation; C. the materials overflowed from the primary grading and the secondary grading in the step A sequentially enter an independent low-intensity magnetic separator, a linear sieve slag separation treatment, a strong magnetic roughing and a strong magnetic scavenging; the process method has high recovery rate of fine-grain weak magnetic minerals, high single-machine processing capacity of strong magnetic separation equipment and large equipment.
Description
Technical Field
The invention relates to the technical field of ore grinding and selecting processes, in particular to a hematite ore dressing and grinding and selecting process method.
Background
Currently, crushing systems used in many iron ores adopt a three-section one-closed process, the ores are conveyed to an ore feeding port, ore is fed to a coarse crusher through a type 4200×12000 plate type ore feeding machine, the coarse crusher adopts an LCC120 jaw crusher to crush the ores to 220-0 mm, and the ores are conveyed to a medium crusher through a belt. The medium crushing operation adopts an H6800 cone crusher, ore is crushed to 65-0 mm, a circular vibrating screen (model is 2YA2160 circular vibrating screen) is used for washing and grading, the medium crushed product is screened to three grades of +13mm, 13-3 mm and 3-0 mm, the +13mm adopts a two-section GDG1014 type permanent magnet dry magnetic separator for dry separation and tailing discarding, the dry magnetic concentrate and 13-3 mm size fraction ore form a fine crushing closed circuit crushing screening process together through the HP500 cone crusher and the 2A2460 screening machine, and the fine crushed screened product is sent to a ball milling ore bin; 3-0 mm size material is sieved by USL3660 linear sieve, the undersize slurry is pumped to a concentrating bin by slag slurry pump, concentrated and then enters a pump pool, classified by a cyclone, settled sand is ball-milled, and the screened ore enters a fine ore bin by a belt to form fine crushing closed cycle.
Grinding and selecting system: the mill grinding system is a two-section totally closed circuit grinding classification, the separation system is a flotation and magnetic separation process, wherein the flotation adopts a floatable copper-sulfur mixture with priority, copper-sulfur separation is carried out, and the magnetic separation is a three-section wet magnetic separation. The model of the first-stage ball mill is phi 5030 multiplied by 6400 overflow ball mill and phi 660mm (6 sets of hydrocyclones) are matched to form a first-stage ore grinding closed system, and the model of the second-stage ore grinding machine is phi 3600 multiplied by 6000 overflow ball mill and phi 500mm (8 sets of hydrocyclones) to form a second-stage ore grinding closed system. Copper-sulfur mixed flotation adopts primary and secondary scavenging flotation, the mixed flotation concentrate is copper-sulfur mixed concentrate, and copper-sulfur separation flotation is carried out on the mixed concentrate after the mixed concentrate enters a large well for concentration and chemical removal through primary and secondary scavenging, so as to produce copper concentrate and sulfur concentrate; and carrying out three-stage magnetic separation on the mixed flotation tailings to obtain qualified iron concentrate.
The method has the defects that magnetite can be treated only, the ore dressing process flow is single, the separation granularity range is relatively narrow, the recovery rate of fine-grain weak magnetic minerals is relatively low, the single-machine processing capacity of magnetic separation equipment is low, the magnetic field intensity of a weak magnetic separator is fixed, and if the fluctuation range of raw ore grade is small, the concentrate grade is basically fixed.
Disclosure of Invention
Aiming at the situation, the invention provides a hematite ore dressing and grinding process method which has high recovery rate of fine-grain weak magnetic minerals, high single-machine processing capacity of strong magnetic separation equipment and large equipment.
The specific scheme of the invention is as follows: the hematite ore dressing and grinding process method comprises the following steps:
A. the crushed ore enters a ball milling ore bin for storage, crushed materials in the ball milling ore bin enter a first-stage ball milling, slurry obtained by the first-stage ball milling is subjected to primary classification by adopting a hydrocyclone, tailings obtained by the primary classification enter the first-stage ball milling again, concentrate obtained by the primary classification enters a secondary classification, tailings obtained by the secondary classification enter a second-stage ball milling, and concentrate obtained by the secondary classification enters a flotation machine for copper-sulfur mixed roughing;
B. copper-sulfur mixed materials and iron-containing mixed materials which are roughly separated by copper-sulfur mixing enter a mixed concentration and a mixed scavenging respectively, refined materials of the mixed concentration enter a mixed concentration well of copper-sulfur, refined materials of the mixed concentration well enter a mixed concentration well of copper-sulfur, tailings of the mixed concentration well enter the mixed concentration well again, and concentrated materials in the mixed concentration well of copper-sulfur are subjected to copper-sulfur separation; the mixed and swept materials are subjected to mixed and second scavenging, the mixed and second scavenging materials enter iron concentrate through three-section weak magnetic separation and are filtered to obtain iron concentrate, and the filtered filtrate is subjected to magnetic separation again and is fed into the iron concentrate for filtration;
C. and B, separating the tailings from the low-intensity magnetic separator by a linear sieve, separating the tailings from the low-intensity magnetic separator by a slag, performing strong magnetic roughing on the tailings from the strong magnetic roughing, performing strong magnetic scavenging on the tailings from the strong magnetic roughing, and performing overflow precipitation on the tailings from the strong magnetic scavenging by a main tail concentration large well, wherein the concentrate, the strong magnetic roughing concentrate and the strong magnetic scavenging concentrate from the low-intensity magnetic separator are pumped into the single large well for overflow precipitation, and the precipitate is sent into the iron concentrate in the step B for filtering to obtain the iron concentrate.
Further, the low-intensity magnetic separator in the step C adopts a CTB1230 type low-intensity magnetic separator, the strong magnetic roughing adopts a type SLON2500 and a type 1.0T magnetic field strength magnetic separator, and the strong magnetic scavenging adopts a type SLON2500 and a type 1.6T magnetic field strength magnetic separator.
Furthermore, in the step B, three sections of weak magnetic separation are all adopted by a CTB1230 type weak magnetic separator, the concentrate obtained by the three sections of weak magnetic separation enters an iron concentrate to be filtered to obtain iron concentrate, and the tailings obtained by the three sections of weak magnetic separation enter a main tail concentration large well in the step C to be overflowed and precipitated.
Further, the copper-sulfur separation operation in the step B is performed according to the following steps:
a. separating and roughing by adopting a flotation machine;
b. separating and roughing materials, respectively carrying out first separation and scavenging, carrying out second separation after the first separation, enabling the separated and second separation copper-containing materials to enter a copper concentrate concentration large well for precipitation overflow, carrying out copper fine filtration on the precipitate to obtain copper concentrate, and enabling tailings after the copper fine filtration to enter the copper concentrate concentration large well again for repeated precipitation concentration; and (3) sequentially carrying out second scavenging and third scavenging on the materials subjected to the first scavenging, enabling ore pulp subjected to the third scavenging to enter a cobalt-sulfur concentrate concentration large well for overflow precipitation, and filtering the precipitate through cobalt-sulfur concentrate to obtain cobalt-sulfur concentrate.
Furthermore, in the invention, a BF-8 type flotation machine is adopted for separating roughing, separating first scavenging, separating second scavenging and separating third scavenging; copper fine filtration and cobalt sulfur concentrate filtration are all carried out by adopting a ZPG-30 model disc type vacuum filter.
Furthermore, the flotation machines used for copper-sulfur mixed roughing, mixed first scavenging and mixed second scavenging in the invention are all KYF/XFC-50 type flotation machines.
Further, in the step A, the overflow ball mill with phi 5030 multiplied by 6400 is adopted as the first ball mill, the overflow ball mill with phi 3600mm multiplied by 6000mm is adopted as the second ball mill, the hydrocyclone with phi 660mm is adopted as the first classification, and the hydrocyclone with phi 500mm is adopted as the second classification.
The process method is mainly designed aiming at the property of magnetite containing copper and sulfur, has a perfect overall flow, and has the following advantages:
1. the invention can treat magnetite and hematite, and also can treat magnetite-hematite mixed iron ore.
2. The invention has flexible mineral separation process flow, wide separation granularity range and high recovery rate of fine-grain weakly magnetic minerals.
3. The strong magnetic separation equipment used in the invention has high single-machine processing capacity, and the equipment is easier to be enlarged.
4. The magnetic separator with strong magnetic separator number SLON2500, 1.0T or 1.6T magnetic field intensity is a high gradient vertical ring magnetic separator, the maximum magnetic field intensity is determined by exciting rated current, the exciting current can be flexibly adjusted according to the production requirement of iron concentrate, the grade of the iron concentrate is adjusted, and the adjustment range is large.
Drawings
FIG. 1 is a schematic of the overall process flow of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made more apparent in the drawings of the present invention, wherein it is to be understood that the embodiments described are merely some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
Referring to fig. 1, the invention relates to a hematite ore dressing and grinding process method, which comprises the following steps:
A. the crushed ore enters a ball milling ore bin for storage, crushed materials in the ball milling ore bin enter a first-stage ball milling, slurry obtained by the first-stage ball milling is subjected to primary classification by adopting a hydrocyclone, tailings obtained by the primary classification enter the first-stage ball milling again, concentrate obtained by the primary classification enters a secondary classification, tailings obtained by the secondary classification enter a second-stage ball milling, and concentrate obtained by the secondary classification enters a flotation machine for copper-sulfur mixed roughing;
B. copper-sulfur mixed materials and iron-containing mixed materials which are roughly separated by copper-sulfur mixing enter a mixed concentration and a mixed scavenging respectively, refined materials of the mixed concentration enter a mixed concentration well of copper-sulfur, refined materials of the mixed concentration well enter a mixed concentration well of copper-sulfur, tailings of the mixed concentration well enter the mixed concentration well again, and concentrated materials in the mixed concentration well of copper-sulfur are subjected to copper-sulfur separation; the mixed and swept materials are subjected to mixed and second scavenging, the mixed and second scavenging materials enter iron concentrate through three-section weak magnetic separation and are filtered to obtain iron concentrate, and the filtered filtrate is subjected to magnetic separation again and is fed into the iron concentrate for filtration;
C. the materials overflowed from the primary grading and the secondary grading in the step A enter an independent weak magnetic separator for magnetic separation, tailings from the weak magnetic separator are subjected to slag separation treatment through a linear sieve, undersize ore pulp is subjected to strong magnetic roughing, tailings from the strong magnetic roughing are subjected to strong magnetic scavenging, tailings after the strong magnetic scavenging enter a main tail concentration large well for overflow precipitation, concentrate from the weak magnetic separator, strong magnetic roughing concentrate and strong magnetic scavenging concentrate are pumped into the independent large well for overflow precipitation, and the precipitate is sent into iron concentrate in the step B for filtering to obtain iron concentrate; further, the low-intensity magnetic separator in the step C adopts a CTB1230 type low-intensity magnetic separator, the strong magnetic roughing adopts a type SLON2500 and a type 1.0T magnetic field strength magnetic separator, and the strong magnetic scavenging adopts a type SLON2500 and a type 1.6T magnetic field strength magnetic separator.
Further, in the invention, the three sections of weak magnetic separation in the step B are all CTB1230 type weak magnetic separators, the concentrate obtained by the three sections of weak magnetic separation enters an iron concentrate to be filtered to obtain iron concentrate, and the tailings obtained by the three sections of weak magnetic separation enter a main tail concentration large well in the step C to be overflowed and precipitated; further, the copper-sulfur separation operation in the step B is performed according to the following steps:
a. separating and roughing by adopting a flotation machine;
b. separating and roughing materials, respectively carrying out first separation and scavenging, carrying out second separation after the first separation, enabling the separated and second separation copper-containing materials to enter a copper concentrate concentration large well for precipitation overflow, carrying out copper fine filtration on the precipitate to obtain copper concentrate, and enabling tailings after the copper fine filtration to enter the copper concentrate concentration large well again for repeated precipitation concentration; and (3) sequentially carrying out second scavenging and third scavenging on the materials subjected to the first scavenging, enabling ore pulp subjected to the third scavenging to enter a cobalt-sulfur concentrate concentration large well for overflow precipitation, and filtering the precipitate through cobalt-sulfur concentrate to obtain cobalt-sulfur concentrate.
Furthermore, in the invention, a BF-8 type flotation machine is adopted for separating roughing, separating first scavenging, separating second scavenging and separating third scavenging; copper fine filtration and cobalt sulfur concentrate filtration are all carried out by adopting a ZPG-30 type disc vacuum filter; furthermore, the flotation machines used for copper-sulfur mixed roughing, mixed first scavenging and mixed second scavenging in the invention are all flotation machines of KYF/XFC-50 model; further, in the step A, the overflow ball mill with phi 5030 multiplied by 6400 is adopted as the first ball mill, the overflow ball mill with phi 3600mm multiplied by 6000mm is adopted as the second ball mill, the hydrocyclone with phi 660mm is adopted as the first classification, and the hydrocyclone with phi 500mm is adopted as the second classification.
In the process method, a new weak magnetic separation and strong magnetic roughing and strong magnetic scavenging system is added for the materials overflowed from the primary classification and the secondary classification, a two-section closed circuit or one-section closed circuit ore grinding process is adopted, the overflow granularity accounts for 75% above 200 meshes, the primary classification and the secondary classification overflows are sent to 4 CTB semi-overflowed weak magnetic separators (magnetic field strength is 0.16T) for separation, the magnetic tailings are coarsely separated by a linear sieve (sieve mesh is 1.2 mm), sundries on the sieve are stacked independently, the undersize ore pulp is sent to 2 strong magnetic separators (SLON 2500 1.0T) for roughing, the roughing tailings are sent to 2 strong magnetic separators (SLON 2500 1.6T) for scavenging, and the scavenging tailings are sent to a total tail concentration large well by pumping; and (3) pumping the weakly magnetic concentrate, the strongly magnetic rough concentrate and the strongly magnetic sweeping concentrate into a large well for concentration and desliming, and finally filtering the mixture by a filter in an iron concentrate filtering procedure to obtain iron concentrate.
The process method is mainly designed aiming at the property of magnetite containing copper and sulfur, has a perfect overall flow, and has the following advantages: the invention can treat magnetite and hematite, and can treat magnetite-hematite mixed iron ore; the mineral separation process is flexible in flow, wide in separation granularity range and high in recovery rate of fine-grain weakly-magnetic minerals; the strong magnetic separation equipment used in the invention has high single-machine processing capacity, and the equipment is more easy to be large-sized; the magnetic separator with strong magnetic separator number SLON2500, 1.0T or 1.6T magnetic field intensity is a high gradient vertical ring magnetic separator, the maximum magnetic field intensity is determined by exciting rated current, the exciting current can be flexibly adjusted according to the production requirement of iron concentrate, the grade of the iron concentrate is adjusted, and the adjustment range is large.
Claims (7)
1. The hematite ore dressing and grinding process method is characterized by comprising the following steps of:
A. the crushed ore enters a ball milling ore bin for storage, crushed materials in the ball milling ore bin enter a first-stage ball milling, slurry obtained by the first-stage ball milling is subjected to primary classification by adopting a hydrocyclone, tailings obtained by the primary classification enter the first-stage ball milling again, concentrate obtained by the primary classification enters a secondary classification, tailings obtained by the secondary classification enter a second-stage ball milling, and concentrate obtained by the secondary classification enters a flotation machine for copper-sulfur mixed roughing;
B. copper-sulfur mixed materials and iron-containing mixed materials which are roughly separated by copper-sulfur mixing enter a mixed concentration and a mixed scavenging respectively, refined materials of the mixed concentration enter a mixed concentration well of copper-sulfur, refined materials of the mixed concentration well enter a mixed concentration well of copper-sulfur, tailings of the mixed concentration well enter the mixed concentration well again, and concentrated materials in the mixed concentration well of copper-sulfur are subjected to copper-sulfur separation; the mixed and swept materials are subjected to mixed and second scavenging, the mixed and second scavenging materials enter iron concentrate through three-section weak magnetic separation and are filtered to obtain iron concentrate, and the filtered filtrate is subjected to magnetic separation again and is fed into the iron concentrate for filtration;
C. and B, separating the tailings from the low-intensity magnetic separator by a linear sieve, separating the tailings from the low-intensity magnetic separator by a slag, performing strong magnetic roughing on the tailings from the strong magnetic roughing, performing strong magnetic scavenging on the tailings from the strong magnetic roughing, and performing overflow precipitation on the tailings from the strong magnetic scavenging by a main tail concentration large well, wherein the concentrate, the strong magnetic roughing concentrate and the strong magnetic scavenging concentrate from the low-intensity magnetic separator are pumped into the single large well for overflow precipitation, and the precipitate is sent into the iron concentrate in the step B for filtering to obtain the iron concentrate.
2. The process for dressing and grinding hematite according to claim 1, wherein the process comprises the following steps: the weak magnetic separator in the step C adopts a CTB1230 type weak magnetic separator, the strong magnetic roughing adopts a model SLON2500 and a 1.0T magnetic field strength magnetic separator, and the strong magnetic scavenging adopts a model SLON2500 and a 1.6T magnetic field strength magnetic separator.
3. The process for dressing and grinding hematite according to claim 1, wherein the process comprises the following steps: and B, three sections of weak magnetic separation are respectively performed by adopting a CTB1230 type weak magnetic separator, the concentrate obtained by three sections of weak magnetic separation enters an iron concentrate to be filtered to obtain iron concentrate, and the tailings obtained by three sections of weak magnetic separation enter a main tail concentration large well in the step C to be overflowed and precipitated.
4. The process for dressing and grinding hematite according to claim 1, wherein the process comprises the following steps: the copper-sulfur separation operation in the step B is carried out according to the following steps:
a. separating and roughing by adopting a flotation machine;
b. separating and roughing materials, respectively carrying out first separation and scavenging, carrying out second separation after the first separation, enabling the separated and second separation copper-containing materials to enter a copper concentrate concentration large well for precipitation overflow, carrying out copper fine filtration on the precipitate to obtain copper concentrate, and enabling tailings after the copper fine filtration to enter the copper concentrate concentration large well again for repeated precipitation concentration; and (3) sequentially carrying out second scavenging and third scavenging on the materials subjected to the first scavenging, enabling ore pulp subjected to the third scavenging to enter a cobalt-sulfur concentrate concentration large well for overflow precipitation, and filtering the precipitate through cobalt-sulfur concentrate to obtain cobalt-sulfur concentrate.
5. The hematite ore dressing and grinding process method according to claim 4, wherein the method comprises the following steps: the separation roughing, the first scavenging, the second scavenging and the third scavenging are all adopted by a BF-8 type flotation machine; copper fine filtration and cobalt sulfur concentrate filtration are all carried out by adopting a ZPG-30 model disc type vacuum filter.
6. The process for dressing and grinding hematite according to claim 1, wherein the process comprises the following steps: the flotation machines used for copper-sulfur mixed roughing, mixed first scavenging and mixed second scavenging are all KYF/XFC-50 type flotation machines.
7. The process for dressing and grinding hematite according to claim 1, wherein the process comprises the following steps: the first-stage ball milling in the step A adopts an overflow type ball mill with phi 5030 multiplied by 6400, the second-stage ball milling adopts an overflow type ball mill with phi 3600mm multiplied by 6000mm, the first-stage classification adopts a hydrocyclone with phi 660mm, and the second-stage classification adopts a hydrocyclone with phi 500 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311145554.6A CN117019376A (en) | 2023-09-06 | 2023-09-06 | Ore dressing and grinding process method for hematite |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311145554.6A CN117019376A (en) | 2023-09-06 | 2023-09-06 | Ore dressing and grinding process method for hematite |
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| Publication Number | Publication Date |
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| CN117019376A true CN117019376A (en) | 2023-11-10 |
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| CN202311145554.6A Pending CN117019376A (en) | 2023-09-06 | 2023-09-06 | Ore dressing and grinding process method for hematite |
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| Country | Link |
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| CN (1) | CN117019376A (en) |
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2023
- 2023-09-06 CN CN202311145554.6A patent/CN117019376A/en active Pending
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