CN115582206A - Mineral processing technology for preparing sintered ore and pellet raw material by using imported iron ore - Google Patents
Mineral processing technology for preparing sintered ore and pellet raw material by using imported iron ore Download PDFInfo
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- CN115582206A CN115582206A CN202211285439.4A CN202211285439A CN115582206A CN 115582206 A CN115582206 A CN 115582206A CN 202211285439 A CN202211285439 A CN 202211285439A CN 115582206 A CN115582206 A CN 115582206A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 94
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 47
- 239000008188 pellet Substances 0.000 title claims abstract description 20
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 18
- 239000011707 mineral Substances 0.000 title claims abstract description 18
- 239000002994 raw material Substances 0.000 title claims abstract description 18
- 238000005516 engineering process Methods 0.000 title claims abstract description 8
- 238000012216 screening Methods 0.000 claims abstract description 50
- 238000007885 magnetic separation Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000000227 grinding Methods 0.000 claims abstract description 11
- 239000012141 concentrate Substances 0.000 claims description 38
- 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
- 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
- 238000000926 separation method Methods 0.000 claims description 4
- 241001584775 Tunga penetrans Species 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000005389 magnetism Effects 0.000 abstract 2
- 238000000498 ball milling Methods 0.000 abstract 1
- 238000003723 Smelting Methods 0.000 description 4
- 239000006148 magnetic separator Substances 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 239000013072 incoming material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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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
-
- 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
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a mineral processing technology for preparing sintered ore and pellet raw materials by using imported iron ore, which is characterized in that the grade of the imported iron ore is 40-52 percent, and the granularity is 12-0 mm; the ore dressing process comprises dry screening, wet screening I, coarse grain jigging preselection, fine grain jigging preselection, high-pressure roller grinding, wet screening II and weak magnetic strong magnetic separation; the imported iron ore is processed by the mineral processing technology to obtain lump ore products with the granularity of 12mm-3mm and the grade of more than or equal to 58 percent, fine ore products with the granularity of 3mm-0.5mm and the grade of more than or equal to 60 percent and pellet raw materials with the grade of more than or equal to 64 percent; the invention has the advantages that: screening and grading imported iron ores, performing preselection by adopting narrow-grade jigging, obtaining qualified lump ores and fine ores in advance as sintered ore products, reducing subsequent ore grinding amount, and finally obtaining pellet ore raw materials through weak magnetism and strong magnetism; the roller mill replaces ball milling, thereby saving energy, reducing consumption, reducing cost and having obvious economic benefit and practical value.
Description
Technical Field
The invention belongs to the field of beneficiation processes in ferrous metallurgy industry, and particularly relates to a beneficiation process for preparing sintering ore and pellet raw materials by using imported iron ore.
Background
In recent years, with the continuous and high-speed development of the economy of China, the demand of iron and steel enterprises for ores is rapidly increased, and domestic mine production can not meet the demand far away, so that a large amount of foreign iron ore resources have to be imported. From the fact that over 60 percent of high grade originally imported abroad can be directly used as iron ore resources of sinter and pellet ore, a great deal of iron ore with the iron grade of about 50 percent is imported at present. The part of imported iron ores are mainly from Brazil, mexico, chilean, peru and the like, the conditions of incoming materials are complex, the ore mainly comprises hematite, and the part of the iron ores also comprises magnetite, the granularity is 12mm-0, and the grade of raw ore is about 50%. Although the ore grade is higher than that of domestic iron ore, the iron ore can not be directly fed into a furnace, and needs to be subjected to mineral processing to obtain high-grade iron ore concentrate as a raw material, and then the high-grade iron ore concentrate is prepared into pellet ore which can be fed into the furnace for smelting. At present, the domestic treatment of imported iron ores generally adopts an ore grinding-weak magnetic-strong magnetic ore dressing process, so that iron ore concentrate with the grade of over 60 percent can be obtained, but the ore dressing process has the problem of high ore dressing cost because all imported iron ores are ground by a ball mill, and simultaneously, the problem of reduction of the recovery rate of the iron ore concentrate because all raw ores are ground by the ball mill inevitably causes an over-grinding phenomenon.
Disclosure of Invention
The invention aims to provide a mineral processing technology for preparing a sintering ore and pellet ore raw material by using imported iron ore, which realizes the purposes of reducing the production cost, improving the iron recovery rate and increasing the economic benefit of enterprises.
The purpose of the invention is realized by the following technical scheme:
the invention relates to a mineral processing technology for preparing sintered ore and pellet raw materials by using imported iron ore, which 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 part of magnetite; the ore dressing 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 mineral processing technology to obtain three products, namely a lump ore product with the granularity of 12-3 mm and the grade of more than or equal to 58 percent, a fine ore product with the granularity of 3-0.5 mm and the grade of more than or equal to 60 percent, and a magnetic separation 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 for dry screening to obtain a dry oversize product of 12-3 mm and a dry undersize product of-3 mm, and feeding the dry oversize product into a coarse grain jigging pre-selection operation; the dry undersize product is fed into a wet screening operation I for further wet screening to obtain a wet oversize product I with the thickness of 3mm-0.5mm and a wet undersize product I with the thickness of-0.5 mm, the wet oversize product I is fed into a fine grain jigging pre-selection operation, and the wet undersize product I is fed into a weak magnetic strong magnetic selection operation;
step 2, coarse jigging preselection operation and fine jigging preselection operation
Feeding the dry-type products on the screen into a coarse jig for gravity separation treatment to obtain coarse jig concentrate and coarse jig tailings with the grade of more than or equal to 58 percent, wherein the coarse jig concentrate is a lump ore product, and the coarse jig tailings are subjected to dewatering screen dewatering and then fed into high-pressure roller milling operation;
feeding the wet-type oversize product I into a fine jigger for reselection treatment to obtain fine jigged concentrate and fine jigged tailings with the grade of more than or equal to 60 percent, wherein the fine jigged concentrate is a fine ore product, and the fine jigged tailings are fed into a wet-type screening operation II;
step 3, high-pressure roller grinding operation and wet screening operation II
Feeding the dehydrated coarse jig tailings into a high-pressure roller mill for crushing, feeding ore discharged by the high-pressure roller mill 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 and strong magnetic separation operation;
step 4, weak magnetic and strong magnetic separation operation
And combining the wet undersize product II and the wet undersize product I, and then feeding the combined product into two sections of continuous weak magnetic and 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 separation concentrate product, and the strong magnetic tailings are discarded.
Furthermore, a buffer bin I is arranged before the coarse jigging preselection operation, and a buffer bin II is arranged before the fine jigging preselection operation.
Furthermore, the dry screening operation adopts a micro powder screen with a relaxation structure screen to carry out dry screening, and the size of the screen hole 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; and the wet screening operation II adopts a linear vibrating screen II for wet screening, and the size of the screen hole is also 0.5mm.
Furthermore, the weak magnetic separation and the strong magnetic separation are respectively carried out by a weak magnetic separator and a strong magnetic separator, wherein the magnetic induction intensity of the weak magnetic separator is 2000GS, and the magnetic induction intensity of the strong magnetic separator is 8000GS.
Compared with the prior art, the invention has the advantages that:
1) According to the invention, imported ore is screened and graded in advance, narrow-granularity-level jigging operation is adopted for ore preselection operation, and high-grade iron ore in the imported ore is sorted in advance to obtain lump ore products with the grade being more than or equal to 58% and fine ore products with the grade being more than or equal to 60%, and the lump ore products and the fine ore products can be directly used as sintered ore to be fed into a furnace for smelting, so that the ore quantity of subsequent sorting is reduced;
2) The high-pressure roller mill is adopted for closed circuit grinding instead of a ball mill, so that the high-efficiency energy-saving effect is achieved; then further separating magnetic concentrate by weak-strong magnetic separation to be used as a high-grade pellet raw material;
3) The process flow not only selects qualified sintering ore products in advance, but also cancels the ore grinding operation of the ball mill, thereby reducing the cost and having obvious energy-saving effect. Has obvious economic benefit and practical value.
Drawings
Figure 1 is a number mass flow chart of the process of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Examples
The imported hematite purchased in the Hebei area contains hematite as main useful mineral and a small amount of magnetite, belongs to typical imported iron ore, and the raw ore grade is generally between 43% and 53%. The production flow of the concentrating mill is the traditional 'two-section grinding-weak magnetic-strong magnetic' concentrating process flow, iron ore concentrate with the grade of more than 60% can be obtained, the technical index requirement of pellet ore preparation can be met, and 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 present invention is obtained from imported hematite, the iron grade of the ore sample is 50%, and the particle size of the ore sample is 12mm to 0, and the ore dressing process for preparing the agglomerate and pellet raw material from imported iron ore of the present invention is characterized by specifically 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 for dry screening, wherein the dry screening adopts a novel micro-powder screen, and the screen with a relaxation structure and 3mm multiplied by 10mm in screen mesh size is adopted to obtain a dry oversize product of 12mm-3mm and a dry undersize product of-3 mm. Products on the dry screen are fed into coarse grain jigging preselection operation through a buffer bin I; the dry undersize product is fed into a wet screening operation I for further wet screening, the wet screening operation I adopts a linear vibrating screen I, the size of a screen hole is 0.5mm, a wet oversize product I with the size of 3mm-0.5mm and a wet undersize product I with the size of-0.5 mm are obtained, the wet oversize product I is fed into fine grain jigging pre-selection operation through a buffer bin II, and the wet undersize product I is fed into weak magnetic strong magnetic separation operation;
step 2, coarse grain jigging preselection operation and fine grain jigging preselection operation
Feeding the dry screened products into a coarse jigging machine for reselection treatment to obtain coarse jigged concentrate and coarse jigged tailings, wherein the coarse jigged concentrate is a lump ore product, and the iron grade of the lump ore product is 59.28 percent and can be directly fed into a furnace for smelting; and dehydrating the coarse jigging tailings by using a dewatering screen, feeding the coarse jigging tailings into a high-pressure roller mill for carrying out useful mineral monomer dissociation again.
Feeding the wet-type oversize product I into a fine jigger for gravity treatment to obtain fine jigging concentrate and fine jigging tailings, wherein the fine jigging concentrate is a fine ore product, the iron grade of the fine ore product is 60.37%, and the fine ore product can be directly fed into a furnace for smelting; feeding the fine jigging tailings into a wet screening operation II;
step 3, high-pressure roller grinding operation and wet screening operation II
Feeding the dehydrated coarse jig tailings into a high-pressure roller mill for crushing, feeding ore discharged by the high-pressure roller mill into a wet linear vibrating screen II for screening, wherein the size of a screen hole is 0.5mm, 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 weak magnetic strong magnetic separation operation;
step 4, weak magnetic and strong magnetic separation operation
And combining the wet undersize product II and the wet undersize product I, and then feeding the mixture into two sections of continuous weak magnetic and 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 separation concentrate product, the iron grade of the magnetic separation concentrate product is 64%, the magnetic separation concentrate product can be used as a raw material for preparing sintered pellets, and the strong magnetic tailings are discarded.
The mineral processing technological process of the invention finally obtains three products, namely sintered lump ore products with the granularity of 12mm-3mm and the grade of 59.28%; sintered fine ore products with the granularity of 3mm-0.5mm and the grade of 60.37 percent; and the grade of the magnetic concentrate product is 64 percent and is used as a pellet raw material.
Specifically, the grade, yield and recovery rate indexes of the products of each operation of the beneficiation process are shown in figure 1.
The invention and its embodiments have been described above schematically and without limitation. Therefore, without departing from the spirit of the present invention, a person of ordinary skill in the art should also understand that the present invention shall not be limited to the embodiments and the similar structural modes of the present invention.
Claims (5)
1. The mineral separation process for preparing the raw materials of the sinter and the pellet from the imported iron ore is characterized in that the grade of the imported iron ore is 40-52 percent, the granularity is 12-0 mm, useful minerals mainly comprise the hematite and also comprise part of magnetite; the ore dressing 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 mineral separation process to obtain three products, namely a lump ore product with the granularity of 12-3 mm and the grade of more than or equal to 58%, a fine ore product with the granularity of 3-0.5 mm and the grade of more than or equal to 60%, and a magnetic separation concentrate product with the iron grade of more than or equal to 64%; 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 for dry screening to obtain a dry oversize product of 12-3 mm and a dry undersize product of-3 mm, and feeding the dry oversize product into a coarse grain jigging pre-selection operation; the dry undersize product is fed into a wet screening operation I for further wet screening to obtain a wet oversize product I with the thickness of 3mm-0.5mm and a wet undersize product I with the thickness of-0.5 mm, the wet oversize product I is fed into a fine grain jigging pre-selection operation, and the wet undersize product I is fed into a weak magnetic strong magnetic selection operation;
step 2, coarse jigging preselection operation and fine jigging preselection operation
Feeding the dry-type products on the screen into a coarse jig for gravity separation treatment to obtain coarse jig concentrate and coarse jig tailings with the grade of more than or equal to 58 percent, wherein the coarse jig concentrate is a lump ore product, and the coarse jig tailings are subjected to dewatering screen dewatering and then fed into high-pressure roller milling operation;
feeding the wet-type oversize product I into a fine jigger for reselection treatment to obtain fine jigged concentrate and fine jigged tailings with the grade of more than or equal to 60 percent, wherein the fine jigged concentrate is a fine ore product, and the fine jigged tailings are fed into a wet-type screening operation II;
step 3, high-pressure roller grinding operation and wet screening operation II
Feeding the dehydrated coarse-grain jigging tailings into a high-pressure roller mill for crushing, feeding ore discharged by the high-pressure roller mill 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 re-grinding to form a closed circuit, and feeding the wet undersize product II into weak magnetic and strong magnetic separation operation;
step 4, weak magnetic and strong magnetic separation operation
And combining the wet undersize product II and the wet undersize product I, and then feeding the combined product into two sections of continuous weak magnetic and 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 separation concentrate product, and the strong magnetic tailings are discarded.
2. A mineral processing process for preparing raw materials of sinter and pellet from imported iron ore according to claim 1, characterized in that a buffer bin I is provided before the coarse jigging preselection operation, and a buffer bin II is provided before the fine jigging preselection operation.
3. A mineral processing process for producing a raw material of a sintered ore and a pellet ore from imported iron ore according to claim 1, wherein the dry screening is performed by using a fine powder screen with a tension structure screen, and the screen size is 3mm x 10mm.
4. The mineral processing technology for preparing the raw materials of the sinter and the pellet ore from the imported iron ore according to claim 1, wherein 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; and the wet screening operation II adopts a linear vibrating screen II to carry out wet screening, and the size of the screen hole is also 0.5mm.
5. The beneficiation process for preparing the agglomerate and pellet raw material from the imported iron ore according to claim 1, wherein the weak magnetic and strong magnetic separation operation respectively adopts a weak magnetic machine and a strong magnetic machine to carry out weak magnetic separation and strong magnetic separation, and the magnetic induction intensity of the weak magnetic machine is 2000GS and the magnetic induction intensity of the strong magnetic machine 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 |
|---|---|---|---|
| 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 true CN115582206A (en) | 2023-01-10 |
| CN115582206B 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024082555A1 (en) * | 2022-10-20 | 2024-04-25 | 中冶北方（大连）工程技术有限公司 | Beneficiation process for preparing sintered ore and pellet ore raw materials by using 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024082555A1 (en) * | 2022-10-20 | 2024-04-25 | 中冶北方（大连）工程技术有限公司 | Beneficiation process for preparing sintered ore and pellet ore raw materials by using imported iron ore |
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| CN115582206B (en) | 2024-03-08 |
| WO2024082555A1 (en) | 2024-04-25 |
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