CN115582206B - Mineral separation process for preparing sinter and pellet raw materials from imported iron ore - Google Patents
Mineral separation process for preparing sinter and pellet raw materials from imported iron ore Download PDFInfo
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- CN115582206B CN115582206B CN202211285439.4A CN202211285439A CN115582206B CN 115582206 B CN115582206 B CN 115582206B CN 202211285439 A CN202211285439 A CN 202211285439A CN 115582206 B CN115582206 B CN 115582206B
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 46
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 25
- 239000011707 mineral Substances 0.000 title claims abstract description 25
- 239000008188 pellet Substances 0.000 title claims abstract description 20
- 239000002994 raw material Substances 0.000 title claims abstract description 18
- 238000000926 separation method Methods 0.000 title claims abstract description 14
- 238000012216 screening Methods 0.000 claims abstract description 51
- 238000007885 magnetic separation Methods 0.000 claims abstract description 22
- 238000000227 grinding Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 14
- 239000012141 concentrate Substances 0.000 claims description 38
- 239000010419 fine particle Substances 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 229910052595 hematite Inorganic materials 0.000 claims description 6
- 239000011019 hematite Substances 0.000 claims description 6
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 claims description 6
- 241001584775 Tunga penetrans Species 0.000 claims description 4
- 230000006698 induction Effects 0.000 claims description 4
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000006148 magnetic separator Substances 0.000 claims 4
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000000498 ball milling Methods 0.000 abstract 1
- 230000005389 magnetism Effects 0.000 abstract 1
- 238000003723 Smelting Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000010959 steel Substances 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
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention relates to a mineral separation process for preparing sinter and pellet raw materials by using imported iron ores, which is characterized in that the grade of the imported iron ores is 40-52%, and the granularity is 12-0 mm; the mineral separation process comprises dry screening, wet screening I, coarse jigging preselection, fine jigging preselection, high-pressure roller grinding, wet screening II and weak magnetic strong magnetic separation; the imported iron ore is processed by the ore dressing process to obtain lump ore products with granularity of 12mm-3mm and grade of more than or equal to 58%, powder ore products with granularity of 3mm-0.5mm and grade of more than or equal to 60%, and pellet ore raw materials with grade of more than or equal to 64%; the invention has the advantages that: screening and classifying imported iron ores, pre-selecting by adopting narrow-size-fraction jigging, obtaining qualified lump ores and powder ores in advance as sintered ore products, reducing the subsequent ore grinding amount, and finally obtaining pellet ore raw materials through weak magnetic field strong magnetism; the roller mill replaces ball milling, saves energy, reduces consumption, reduces cost and has obvious economic benefit and practical value.
Description
Technical Field
The invention belongs to the field of mineral separation processes in the ferrous metallurgy industry, and particularly relates to a mineral separation process for preparing sintered ore and pellet raw materials from imported iron ores.
Background
In recent years, with the continuous and high-speed development of the economy in China, the demand of iron and steel enterprises for ores is rapidly increased, and domestic mine production is far from meeting the demand, so that foreign iron ore resources have to be imported in a large quantity. From the fact that the high grade of which is originally imported abroad is more than 60 percent and can be directly used as iron ore resources of sintered ore and pellet ore, a great deal of iron ores with iron grade of about 50 percent are imported. The imported iron ore is mainly from Brazil, mexico, chilean, peruvian and the like, the material supply condition is complex, hematite is mainly contained, and the imported iron ore also contains part of magnetite, the granularity is 12mm-0, and the raw ore grade is about 50%. Although the ore grade is higher than domestic iron ore, the ore cannot be directly connected into a furnace, ore dressing processing is needed to obtain high-grade iron ore concentrate as a raw material, and then the high-grade iron ore concentrate is prepared into pellets to be smelted in the furnace. At present, the imported iron ore is generally processed in China by adopting an ore grinding-weak magnetic-strong magnetic ore dressing process, so that iron ore concentrate with the grade of more than 60 percent can be obtained, but the ore dressing process has the problem of higher ore dressing cost because the imported iron ore is subjected to ore grinding treatment by a ball mill, and meanwhile, the problem of reduction in the recovery rate of the iron ore concentrate because the overgrinding phenomenon is caused by the fact that all raw ore is subjected to ore grinding by the ball mill is unavoidable.
Disclosure of Invention
The invention aims to provide a mineral separation process for preparing sinter and pellet raw materials by using imported iron ores, which can reduce production cost, improve iron recovery rate and increase economic benefits of enterprises.
The invention aims at realizing the following technical scheme:
the mineral separation process for preparing the sinter and pellet raw materials by using the imported iron ore is characterized in that the grade of the imported iron ore is 40% -52%, the granularity is 12-0 mm, the useful minerals mainly comprise hematite and part of magnetite; the mineral separation process comprises dry screening operation, wet screening operation I, coarse grain jigging preselection operation, fine grain jigging preselection operation, high-pressure roller grinding operation, wet screening operation II and weak magnetic strong magnetic separation operation; the imported iron ore is processed by the ore dressing process to obtain three products, namely a lump ore product with the granularity of 12mm-3mm and the grade of more than or equal to 58 percent, a powder ore product with the granularity of 3mm-0.5mm and the grade of more than or equal to 60 percent, and a magnetic concentrate product with the iron grade of more than or equal to 64 percent; the method specifically comprises the following steps:
step 1, dry screening operation and wet screening operation I
Feeding the imported iron ore into a dry screening operation to perform dry screening to obtain a 12mm-3mm dry oversize product and a-3 mm dry undersize product, and feeding the dry oversize product into a coarse jigging preselection operation; the dry undersize product is fed into wet screening operation I for further wet screening to obtain wet undersize product I with the thickness of 3mm to 0.5mm and wet undersize product I with the thickness of 0.5mm, the wet undersize product I is fed into fine grain jigging preselection operation, and the wet undersize product I is fed into weak magnetic strong magnetic separation operation;
step 2, a coarse jigging preselection operation and a fine jigging preselection operation
The method comprises the steps of (1) feeding a dry-type oversize product into a coarse-grain jigging machine for re-selection treatment to obtain coarse-grain jigging concentrate with the grade of more than or equal to 58% and coarse-grain jigging tailings, wherein the coarse-grain jigging concentrate is a lump ore product, and the coarse-grain jigging tailings are subjected to dewatering by a dewatering screen and then fed into a high-pressure roller grinding operation;
the wet-type oversize product I is fed into a fine particle jigger for reselection treatment, fine particle jigged concentrate with the grade more than or equal to 60% and fine particle jigged tailings are obtained, the fine particle jigged concentrate is the powder mineral product, and the fine particle jigged tailings are fed into wet-type screening operation II;
step 3, high-pressure roller grinding operation and wet screening operation II
Feeding dewatered coarse jigged tailings into a high-pressure roller mill for crushing, discharging the tailings by the high-pressure roller mill, feeding the tailings into a wet linear vibrating screen II for screening to obtain a wet oversize product II and a wet undersize product II, returning the wet oversize product II to the high-pressure roller mill for regrinding to form a closed circuit, and feeding the wet undersize product II into a weak magnetic high-intensity magnetic separation operation;
step 4, weak magnetic high intensity magnetic separation operation
And (3) merging the wet undersize product II and the wet undersize product I, and then feeding the mixture into two sections of continuous weak magnetic strong magnetic separation operation to obtain weak magnetic concentrate, strong magnetic concentrate and strong magnetic tailings, wherein the weak magnetic concentrate and the strong magnetic concentrate are merged into a magnetic concentrate product, and the strong magnetic tailings are thrown off.
Further, a buffer bin I is arranged before the coarse grain jigging and preselecting operation, and a buffer bin II is arranged before the fine grain jigging and preselecting operation.
Further, the dry screening operation adopts a micro powder screen with a relaxation structure screen to carry out dry screening, and the screen hole size is 3mm multiplied by 10mm.
Further, the wet screening operation I adopts a linear vibrating screen I to carry out wet screening, and the size of a screen hole is 0.5mm; the wet screening operation II adopts a linear vibrating screen II to conduct wet screening, and the screen hole size is 0.5mm.
Further, the weak magnetic and strong magnetic separation operation adopts a weak magnetic machine and a strong magnetic machine to carry out weak magnetic separation and strong magnetic separation respectively, wherein the magnetic induction intensity of the weak magnetic machine is 2000GS, and the magnetic induction intensity of the strong magnetic machine is 8000GS.
Compared with the prior art, the invention has the advantages that:
1) According to the method, the imported ore is screened and classified in advance, the ore pre-selection operation is carried out by adopting the jigging operation with the narrow granularity level, the iron ore with high grade in the imported ore is selected in advance, and the lump ore product with the grade more than or equal to 58% and the powder ore product with the grade more than or equal to 60% are obtained, so that the method can be directly used as the sintered ore to be fed into a furnace for smelting, and the ore quantity of the subsequent selection is reduced;
2) The closed circuit grinding is carried out by adopting the high-pressure roller mill to replace the ball mill, so that the high-efficiency energy-saving grinding machine is high-efficiency; then, further separating out magnetic concentrate through weak-strong magnetic separation to be used as a raw material of the high-grade pellet ore;
3) The technological process of the invention not only selects qualified sintered mineral products in advance, but also eliminates the grinding operation of the ball mill, reduces the cost and has obvious energy-saving effect. Has obvious economic benefit and practical value.
Drawings
FIG. 1 is a mass flow chart of the process of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples.
Examples
Imported hematite purchased in Hebei area, the main useful mineral of the ore is hematite, and the ore also contains a small amount of magnetite, belongs to typical imported iron ore, and the raw ore grade is generally 43% -53%. The production flow of the concentrating mill is a traditional two-section ore grinding-weak magnetic-strong magnetic concentrating process flow, so that iron ore concentrate with the grade of more than 60% can be obtained, the technical index requirement for preparing pellets can be met, but the problems of high energy consumption and high cost in production exist.
As shown in fig. 1, the ore sample in the embodiment of the invention is taken from the imported hematite, the grade of iron in the ore sample is 50%, the granularity is 12mm-0, and the mineral separation process for preparing the raw materials of the agglomerate and the pellet by using the imported iron ore is characterized by comprising the following steps:
step 1, dry screening operation and wet screening operation I
And feeding the imported iron ore into a 3mm dry screening operation to carry out dry screening, wherein the dry screening adopts a novel micro powder screen, and the screen mesh with a relaxation structure with the screen mesh size of 3mm multiplied by 10mm is adopted to obtain a 12mm-3mm dry oversize product and a-3 mm dry undersize product. Feeding the dry-type oversize products into a coarse-grain jigging preselection operation through a buffer bin I; the dry type undersize products are fed into wet type screening operation I for further wet type screening, the wet type screening operation I adopts a linear vibrating screen I, the screen mesh size is 0.5mm, wet type oversize products I with the size of 3mm-0.5mm and wet type undersize products I with the size of-0.5 mm are obtained, the wet type oversize products I are fed into fine grain jigging preselection operation through a buffer bin II, and the wet type undersize products I are fed into weak magnetic strong magnetic separation operation;
step 2, a coarse jigging preselection operation and a fine jigging preselection operation
The dry-type oversize products are fed into a coarse-grain jigger for re-selection treatment, coarse-grain jigging concentrate and coarse-grain jigging tailings are obtained, the coarse-grain jigging concentrate is a lump ore product, the iron grade of the lump ore product is 59.28 percent, and the lump ore product can be directly fed into a furnace for smelting; the coarse jigged tailings are dehydrated by a dewatering screen and then fed into a high-pressure roller mill for operation, and useful mineral monomer dissociation is carried out again.
The wet-type oversize product I is fed into a fine particle jigger for reselection treatment, fine particle jigged concentrate and fine particle jigged tailings are obtained, the fine particle jigged concentrate is a powder mineral product, the iron grade of the powder mineral product is 60.37 percent, and the powder mineral product can be directly fed into a furnace for smelting; feeding the fine jigged tailings into wet screening operation II;
step 3, high-pressure roller grinding operation and wet screening operation II
Feeding dewatered coarse jigged tailings into a high-pressure roller mill for crushing, discharging the tailings by the high-pressure roller mill, feeding the tailings into a wet linear vibrating screen II for screening, obtaining a wet oversize product II and a wet undersize product II, returning the wet oversize product II to the high-pressure roller mill for regrinding to form a closed circuit, and feeding the wet undersize product II into a weak magnetic high-intensity magnetic separation operation;
step 4, weak magnetic high intensity magnetic separation operation
And combining the wet undersize product II with the wet undersize product I, and then feeding the combined product II and the wet undersize product I into two sections of continuous weak magnetic strong magnetic separation operation to obtain weak magnetic concentrate, strong magnetic concentrate and strong magnetic tailings, wherein the weak magnetic concentrate and the strong magnetic concentrate are combined into a magnetic concentrate product, the iron grade of the magnetic concentrate product is 64%, and the magnetic concentrate product can be used as a raw material for preparing sintered pellets, and the strong magnetic tailings are thrown into the tailings.
The mineral separation process flow of the invention finally obtains three products, namely sintered ore products with granularity of 12mm-3mm and grade of 59.28 percent; sintered powder mineral products with granularity of 3mm-0.5mm and grade of 60.37%; the grade is 64% of the magnetic concentrate product used as the raw material of the pellet.
The grade, yield and recovery index of each operation product of the mineral separation process are shown in figure 1.
The foregoing is illustrative of the present invention and its embodiments, and is not to be construed as limiting thereof. Therefore, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical scheme are not creatively designed without departing from the gist of the present invention, and all the structural manners and the embodiment are considered to be within the protection scope of the present patent.
Claims (5)
1. A mineral separation process for preparing sinter and pellet raw materials by using imported iron ore is characterized in that the grade of the imported iron ore is 40% -52%, the granularity is 12-0 mm, useful minerals mainly comprise hematite and also comprise partial magnetite; the mineral separation process comprises dry screening operation, wet screening operation I, coarse grain jigging preselection operation, fine grain jigging preselection operation, high-pressure roller grinding operation, wet screening operation II and weak magnetic strong magnetic separation operation; the imported iron ore is processed by the ore dressing process to obtain three products, namely a lump ore product with the granularity of 12mm-3mm and the grade of more than or equal to 58 percent, a powder ore product with the granularity of 3mm-0.5mm and the grade of more than or equal to 60 percent, and a magnetic concentrate product with the iron grade of more than or equal to 64 percent; the method specifically comprises the following steps:
step 1, dry screening operation and wet screening operation I
Feeding the imported iron ore into a dry screening operation to perform dry screening to obtain a 12mm-3mm dry oversize product and a-3 mm dry undersize product, and feeding the dry oversize product into a coarse jigging preselection operation; the dry undersize product is fed into wet screening operation I for further wet screening to obtain wet undersize product I with the thickness of 3mm to 0.5mm and wet undersize product I with the thickness of 0.5mm, the wet undersize product I is fed into fine grain jigging preselection operation, and the wet undersize product I is fed into weak magnetic strong magnetic separation operation;
step 2, a coarse jigging preselection operation and a fine jigging preselection operation
The method comprises the steps of (1) feeding a dry-type oversize product into a coarse-grain jigging machine for re-selection treatment to obtain coarse-grain jigging concentrate with the grade of more than or equal to 58% and coarse-grain jigging tailings, wherein the coarse-grain jigging concentrate is a lump ore product, and the coarse-grain jigging tailings are subjected to dewatering by a dewatering screen and then fed into a high-pressure roller grinding operation;
the wet-type oversize product I is fed into a fine particle jigger for reselection treatment, fine particle jigged concentrate with the grade more than or equal to 60% and fine particle jigged tailings are obtained, the fine particle jigged concentrate is the powder mineral product, and the fine particle jigged tailings are fed into wet-type screening operation II;
step 3, high-pressure roller grinding operation and wet screening operation II
Feeding dewatered coarse jigged tailings into a high-pressure roller mill for crushing, discharging the tailings by the high-pressure roller mill, feeding the tailings into a wet linear vibrating screen II for screening to obtain a wet oversize product II and a wet undersize product II, returning the wet oversize product II to the high-pressure roller mill for regrinding to form a closed circuit, and feeding the wet undersize product II into a weak magnetic high-intensity magnetic separation operation;
step 4, weak magnetic high intensity magnetic separation operation
And (3) merging the wet undersize product II and the wet undersize product I, and then feeding the mixture into two sections of continuous weak magnetic strong magnetic separation operation to obtain weak magnetic concentrate, strong magnetic concentrate and strong magnetic tailings, wherein the weak magnetic concentrate and the strong magnetic concentrate are merged into a magnetic concentrate product, and the strong magnetic tailings are thrown off.
2. The beneficiation process for preparing sintered ore and pellet raw materials from imported iron ore according to claim 1, wherein a surge bin i is provided before the coarse jigging operation, and a surge bin ii is provided before the fine jigging operation.
3. The beneficiation process for preparing sintered ore and pellet raw materials from imported iron ore according to claim 1, wherein the dry screening operation adopts a micro powder screen with a relaxed structure screen to carry out dry screening, and the mesh size is 3mm x 10mm.
4. The beneficiation process for preparing sintered ore and pellet ore raw materials from imported iron ore according to claim 1, wherein the wet screening operation I adopts a linear vibrating screen I for wet screening, and the mesh size is 0.5mm; the wet screening operation II adopts a linear vibrating screen II to conduct wet screening, and the screen hole size is 0.5mm.
5. The beneficiation process for preparing sintered ore and pellet ore raw materials from imported iron ore according to claim 1, wherein the weak magnetic high intensity magnetic separation operation adopts a weak magnetic separator and a strong magnetic separator to carry out weak magnetic separation and strong magnetic separation respectively, and the magnetic induction intensity of the weak magnetic separator is 2000GS and the magnetic induction intensity of the strong magnetic separator is 8000GS.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211285439.4A CN115582206B (en) | 2022-10-20 | 2022-10-20 | Mineral separation process for preparing sinter and pellet raw materials from imported iron ore |
| PCT/CN2023/084628 WO2024082555A1 (en) | 2022-10-20 | 2023-03-29 | Beneficiation process for preparing sintered ore and pellet ore raw materials by using imported iron ore |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211285439.4A CN115582206B (en) | 2022-10-20 | 2022-10-20 | Mineral separation process for preparing sinter and pellet raw materials from imported iron ore |
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| CN115582206A CN115582206A (en) | 2023-01-10 |
| CN115582206B true CN115582206B (en) | 2024-03-08 |
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| CN202211285439.4A Active CN115582206B (en) | 2022-10-20 | 2022-10-20 | Mineral separation process for preparing sinter and pellet raw materials from imported iron ore |
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| WO (1) | WO2024082555A1 (en) |
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| CN115582206B (en) * | 2022-10-20 | 2024-03-08 | 中冶北方（大连）工程技术有限公司 | Mineral separation process for preparing sinter and pellet raw materials from imported iron ore |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102389859A (en) * | 2011-11-03 | 2012-03-28 | 河北联合大学 | Method for processing and utilizing specularite |
| CN102773156A (en) * | 2012-08-14 | 2012-11-14 | 中钢集团马鞍山矿山研究院有限公司 | Beneficiation method for producing blast furnace lump ore by hematite at medium-high grade |
| CN107335535A (en) * | 2017-08-30 | 2017-11-10 | 玉溪大红山矿业有限公司 | A kind of low-grade difficulty selects the Efficient beneficiation method of smelting titanomagnetite |
| CN108212506A (en) * | 2018-03-09 | 2018-06-29 | 中钢集团马鞍山矿山研究院有限公司 | A kind of classification pre-selection of magnetic-red-water chestnut compound iron ore, fine New Method for Sorting |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115582206B (en) * | 2022-10-20 | 2024-03-08 | 中冶北方（大连）工程技术有限公司 | Mineral separation process for preparing sinter and pellet raw materials from imported iron ore |
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2022
- 2022-10-20 CN CN202211285439.4A patent/CN115582206B/en active Active
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- 2023-03-29 WO PCT/CN2023/084628 patent/WO2024082555A1/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102389859A (en) * | 2011-11-03 | 2012-03-28 | 河北联合大学 | Method for processing and utilizing specularite |
| CN102773156A (en) * | 2012-08-14 | 2012-11-14 | 中钢集团马鞍山矿山研究院有限公司 | Beneficiation method for producing blast furnace lump ore by hematite at medium-high grade |
| CN107335535A (en) * | 2017-08-30 | 2017-11-10 | 玉溪大红山矿业有限公司 | A kind of low-grade difficulty selects the Efficient beneficiation method of smelting titanomagnetite |
| CN108212506A (en) * | 2018-03-09 | 2018-06-29 | 中钢集团马鞍山矿山研究院有限公司 | A kind of classification pre-selection of magnetic-red-water chestnut compound iron ore, fine New Method for Sorting |
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| CN115582206A (en) | 2023-01-10 |
| WO2024082555A1 (en) | 2024-04-25 |
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