CN114350936A - Method for reducing sintering solid fuel consumption by controlling fuel granularity - Google Patents
Method for reducing sintering solid fuel consumption by controlling fuel granularity Download PDFInfo
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- CN114350936A CN114350936A CN202111536439.2A CN202111536439A CN114350936A CN 114350936 A CN114350936 A CN 114350936A CN 202111536439 A CN202111536439 A CN 202111536439A CN 114350936 A CN114350936 A CN 114350936A
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- sintering
- iron ore
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- 238000005245 sintering Methods 0.000 title claims abstract description 75
- 239000000446 fuel Substances 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000004449 solid propellant Substances 0.000 title description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000000203 mixture Substances 0.000 claims abstract description 38
- 229910052742 iron Inorganic materials 0.000 claims abstract description 29
- 239000000843 powder Substances 0.000 claims abstract description 22
- 239000007787 solid Substances 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims description 23
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 18
- 239000002994 raw material Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000000292 calcium oxide Substances 0.000 claims description 9
- 235000012255 calcium oxide Nutrition 0.000 claims description 9
- 229910052681 coesite Inorganic materials 0.000 claims description 6
- 229910052906 cristobalite Inorganic materials 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052682 stishovite Inorganic materials 0.000 claims description 6
- 229910052905 tridymite Inorganic materials 0.000 claims description 6
- 235000019738 Limestone Nutrition 0.000 claims description 3
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 3
- 239000010459 dolomite Substances 0.000 claims description 3
- 229910000514 dolomite Inorganic materials 0.000 claims description 3
- 238000005469 granulation Methods 0.000 claims description 3
- 230000003179 granulation Effects 0.000 claims description 3
- 239000006028 limestone Substances 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000001569 carbon dioxide Substances 0.000 abstract description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 23
- 238000002485 combustion reaction Methods 0.000 description 14
- 239000000126 substance Substances 0.000 description 6
- 239000000571 coke Substances 0.000 description 4
- 238000006477 desulfuration reaction Methods 0.000 description 4
- 230000023556 desulfurization Effects 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/008—Composition or distribution of the charge
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for reducing the burnup of sintered solids by controlling the fuel granularity, which is characterized in that the sintered fuel granularity is prepared according to the following percentage content under the condition that the proportion of iron ore powder smaller than 0.5mm is 30-50 percent: 5-25% of 7-5mm, 0-15% of 5-3mm, 20-70% of 3-1mm, 10-40% of 1-0.5mm and 5-30% of less than 0.5 mm. The invention aims to provide a method for reducing the burning rate of sintering solids by controlling the granularity of fuel, which achieves the purpose of reducing the burning rate of the sintering solids on the premise of ensuring the qualified quality index of the sintering ore by reasonably controlling the granularity composition of the fuel used for sintering to be consistent with the granularity composition of the iron ore powder, reduces the consumption of fossil energy and the emission of carbon dioxide, and has obvious economic benefit and social benefit.
Description
Technical Field
The invention relates to the technical field of reducing the burnup of sintered solids, in particular to a method for reducing the burnup of the sintered solids by controlling the fuel granularity.
Background
The iron and steel industry is a high-energy-consumption industry in a plurality of manufacturing industries, the iron making and sintering process is a high-energy-consumption process in iron and steel production, and reduction of sintering solid fuel consumption is one of effective means for reducing energy consumption of the iron making process and is also one of main ways for reducing carbon dioxide emission of the iron making process. Therefore, it is one of the main tasks of iron-making and sintering workers to reduce the sintering solid fuel consumption by a series of means such as reasonably controlling the fuel granularity and using fuel with excellent quality.
Disclosure of Invention
The invention aims to provide a method for reducing the burning rate of sintering solids by controlling the granularity of fuel, which achieves the purpose of reducing the burning rate of the sintering solids on the premise of ensuring the qualified quality index of the sintering ore by reasonably controlling the granularity composition of the fuel used for sintering to be consistent with the granularity composition of the iron ore powder, reduces the consumption of fossil energy and the emission of carbon dioxide, and has obvious economic benefit and social benefit.
In order to solve the technical problems, the invention adopts the following technical scheme:
a method for reducing the fuel consumption of sintered solids by controlling the fuel granularity is characterized in that the sintered fuel granularity composition is configured according to the following percentage content under the condition that the proportion of iron ore powder smaller than 0.5mm is 30-50 percent: 5-25% of 7-5mm, 0-15% of 5-3mm, 20-70% of 3-1mm, 10-40% of 1-0.5mm and 5-30% of less than 0.5 mm;
the raw materials are mixed according to the following mass percentage: iron ore powder A20-50%, iron ore powder B20-50%, iron ore powder C10-30%, limestone 4.0-8.0%, dolomite 3.0-6.0%, quick lime 1.0-3.5%, serpentine 1.0-3.0%, sintering fuel 2.0-7.0%, and return fines 8.0-13.0% (less than 5mm in finished sintering fines); adding water into the raw materials, mixing, and granulating to obtain a mixture; and sintering the mixture to obtain the sinter.
Further, the iron ore concentrate A comprises the following components in percentage by mass: 60.50-68.50% of TFe, 25.00-31.50% of FeO, 1.25-3.50% of CaO, and SiO20.85～2.65％、MgO 0.65～ 1.35％、F 0.08～0.45％、P 0.025～0.095％、S 0.50～1.05％。
Further, the iron ore powder B comprises the following components in percentage by mass: 55.20 to 62.50 percent of TFe, 0.20 to 0.80 percent of FeO, 0 to 0.80 percent of CaO, and SiO23.50～6.30％、MgO 0.03～0.25％、 F 0.02～0.15％、P 0～0.10％、S 0.01～0.08％。
Further, the iron ore powder C comprises the following components in percentage by mass: 55.30 to 63.50 percent of TFe, 0.30 to 1.20 percent of FeO, 0 to 0.70 percent of CaO, and SiO23.80～5.50％、MgO 0.05～0.25％、 F 0～0.20％、P 0.02～0.15％、S 0.005～0.085％。
Furthermore, the alkalinity of the sintered ore is 1.95-2.05, and the mass percentage of MgO in the sintered ore is 2.1% -2.4%.
Further, the granulation time is 2-5 min; the mass percentage of the water in the mixture is 7-9%; the ignition time of sintering is 1-3 min, and the ignition negative pressure is 3000-6000 Pa; the sintering process is accompanied with air draft treatment, and the negative pressure of the air draft is 9000-12000 Pa.
Compared with the prior art, the invention has the beneficial technical effects that:
according to the invention, by controlling the grain size composition of the sintering fuel to be matched with the grain size composition of the sintering iron ore powder, under the condition that the quality index of the sintering ore meets the requirement of blast furnace smelting, the solid combustion consumption of the sintering fuel can be reduced by 1-2kg/t of the sintering ore, and the emission of carbon dioxide can also be reduced.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The method for reducing the fuel consumption of the sintered solid by controlling the fuel granularity comprises the following specific processes:
step S1: the raw materials are mixed according to the following mass percentage:
the raw materials are mixed according to the following mass percentage: iron ore powder A20-50%, iron ore powder B20-50%, iron ore powder C10-30%, limestone 4.0-8.0%, dolomite 3.0-6.0%, quick lime 1.0-3.5%, serpentine 1.0-3.0%, sintering fuel 2.0-7.0%, and return fines 8.0-13.0% (less than 5mm in finished sintering fines); under the condition that the proportion of the iron ore powder A, the iron ore powder B and the iron ore powder C which are less than 0.5mm is controlled to be 30-50%, the grain size composition of the sintering fuel is controlled as follows: 5-25% of 7-5mm, 0-15% of 5-3mm, 20-70% of 3-1mm, 10-40% of 1-0.5mm and 5-30% of less than 0.5 mm.
Step S2: the raw materials are mixed with water and granulated to obtain a mixture.
Specifically, the raw materials in the step S1 are added with water to be mixed for the first time, and after uniform mixing, the obtained mixture is granulated for 2-5 min. The granulation process may be carried out in a granulator. Of course, the present application is not limited thereto, and may be implemented in other suitable devices.
Step S3: and sintering the mixture to obtain the sinter.
Wherein the mass percentage of the water in the mixture is 7-9%. The ignition time of sintering is 1-3 min, and the ignition negative pressure is 8000-12000 Pa. The sintering process is accompanied with air draft treatment, and the negative pressure of the air draft is 9000-15000 Pa.
The sintering process may be performed on a sintering machine, although the present application is not limited thereto, and other suitable apparatuses may be used. The sintering process can be specifically carried out in the following manner:
the method comprises the steps of enabling a mixture to pass through a material distributor and be uniformly arranged on a sintering machine trolley, enabling a material layer to be formed to a certain thickness, igniting through a sintering machine head igniter, enabling ignition fuel to be coke oven gas, enabling ignition time to be 1-3 min, starting air draft at the bottom of a sintering machine, forming certain negative pressure under a grate, enabling ignition negative pressure to be 8000-12000 Pa, enabling air after ignition to be pumped away from the top down through the material layer, enabling sintering smoke to be discharged into the atmosphere after a desulfurization process, enabling the sintering air draft negative pressure to be 9000-15000 Pa, enabling a combustion zone on the surface of the material layer after ignition to gradually move towards the material layer on the lower portion along with the fact that combustion of upper fuel is finished. And when the combustion zone reaches the grate, the sintering process is ended to obtain the sinter. The alkalinity of the sintered ore is 1.95-2.05, and the mass percentage of MgO in the sintered ore is 2.1% -2.4%.
The process of the present invention is further illustrated by the following specific examples.
Specific components of each raw material used in the following examples are shown in table 1.
Chemical composition of raw Material (wt%)
Note: other possible trace elements present in the chemical composition of the raw materials are not detected and therefore add up to not 100%.
Example 1
The raw materials and the mixture ratio shown in the table 2 are mixed. And uniformly mixing the raw materials in the primary mixing material, and then granulating in a secondary mixer for 3min, wherein the mass percentage of water in the mixture is controlled to be 7.5%. The granulated mixture passes through a material distributor and is uniformly distributed on a sintering machine trolley, the thickness of a material layer is 700mm, the mixture is ignited by an igniter of a sintering machine head, the ignition fuel is coke oven gas, the ignition time is 1.5min, meanwhile, air draft is started at the bottom of the sintering machine, certain negative pressure is formed below a grate, the ignition negative pressure is 11000Pa, air after ignition is pumped away from the top down through the sintering material layer, sintering smoke is exhausted into the atmosphere after a desulfurization process, the sintering air draft negative pressure is 13000Pa, and a combustion zone on the surface of the material layer after ignition gradually moves towards the lower material layer along with the completion of combustion of fuel on the upper part. And when the combustion zone reaches the grate, the sintering process is ended to obtain the sinter. The chemical composition and process index of the sintered ore are shown in table 3.
Example 2
The raw materials and the mixture ratio shown in the table 2 are mixed. And uniformly mixing the raw materials in the primary mixing material, and then granulating in a secondary mixer for 4min, wherein the mass percentage of water in the mixture is controlled to be 7.8%. The granulated mixture passes through a material distributor and is uniformly distributed on a sintering machine trolley, the thickness of a material layer is 700mm, the mixture is ignited by an igniter of a sintering machine head, the ignition fuel is coke oven gas, the ignition time is 2.0min, meanwhile, air draft is started at the bottom of the sintering machine, certain negative pressure is formed below a grate, the ignition negative pressure is 11000Pa, air after ignition is pumped away from the top down through the sintering material layer, sintering smoke is exhausted into the atmosphere after a desulfurization process, the sintering air draft negative pressure is 13000Pa, and a combustion zone on the surface of the material layer after ignition gradually moves towards the lower material layer along with the completion of combustion of fuel on the upper part. And when the combustion zone reaches the grate, the sintering process is ended to obtain the sinter.
Example 3
The raw materials and the mixture ratio shown in the table 2 are mixed. And uniformly mixing the raw materials in the primary mixing material, and then granulating in a secondary mixing machine for 3.5min, wherein the mass percentage of water in the mixture is controlled to be 7.9%. The granulated mixture passes through a material distributor and is uniformly distributed on a sintering machine trolley, the thickness of a material layer is 700mm, the mixture is ignited by an igniter of a sintering machine head, the ignition fuel is coke oven gas, the ignition time is 1.5min, meanwhile, air draft is started at the bottom of the sintering machine, certain negative pressure is formed below a grate, the ignition negative pressure is 11000Pa, air after ignition is pumped away from the top down through the sintering material layer, sintering smoke is exhausted into the atmosphere after a desulfurization process, the sintering air draft negative pressure is 13000Pa, and a combustion zone on the surface of the material layer after ignition gradually moves towards the lower material layer along with the completion of combustion of fuel on the upper part. And when the combustion zone reaches the grate, the sintering process is ended to obtain the sinter.
The chemical composition and process index of the sintered ore are shown in table 3.
TABLE 2 raw material ratio (wt%)
TABLE 3 chemical composition and Process index of sintered ore of examples
As can be seen from Table 3, by increasing the proportion of the sintering fuel with the grain size of 1-3mm from 30% to 40%, 50% and 60%, correspondingly decreasing the proportion of 1-0.5mm from 30% to 24%, 18% and 12%, and decreasing the proportion of the sintering fuel with the grain size of less than 0.5mm from 20% to 16%, 12% and 8%, the chemical composition of the sintering ore is kept stable and the strand strength of the sintering ore is kept above 65% under the condition of consistent sintering ingredients, while the solid combustion of the sintering fuel is reduced from 72.48kg/t to 71.4kg/t, 69.65 and 72.17kg/t, and is reduced by 1.08kg/t, 2.83kg/t and 0.31kg/t compared with the benchmark
In conclusion, the method for reducing the burnup of the sintering solid by controlling the fuel granularity reduces the burnup of the sintering solid by controlling the granularity of the sintering fuel within a reasonable range under the condition of ensuring that the quality index of the sintering ore meets the smelting requirement of a blast furnace.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (6)
1. A method for reducing burnup of a sintered solid by controlling fuel particle size, comprising: under the condition that the proportion of iron ore powder smaller than 0.5mm is 30-50%, the particle size composition of the sintering fuel is prepared according to the following percentage: 5-25% of 7-5mm, 0-15% of 5-3mm, 20-70% of 3-1mm, 10-40% of 1-0.5mm and 5-30% of less than 0.5 mm;
the raw materials are mixed according to the following mass percentage: 20-50% of iron ore powder A, 20-50% of iron ore powder B, 10-30% of iron ore powder C, 4.0-8.0% of limestone, 3.0-6.0% of dolomite, 1.0-3.5% of quicklime, 1.0-3.0% of serpentine, 2.0-7.0% of sintering fuel and 8.0-13.0% of return fines; adding water into the raw materials, mixing, and granulating to obtain a mixture; and sintering the mixture to obtain the sinter.
2. The method of reducing burnup of a sintered solid using controlled fuel particle size according to claim 1, wherein: the iron ore concentrate A comprises the following components in percentage by massDividing into: 60.50-68.50% of TFe, 25.00-31.50% of FeO, 1.25-3.50% of CaO, and SiO20.85～2.65％、MgO 0.65～1.35％、F 0.08～0.45％、P 0.025～0.095％、S 0.50～1.05％。
3. The method of reducing burnup of a sintered solid using controlled fuel particle size according to claim 1, wherein: the iron ore powder B comprises the following components in percentage by mass: 55.20 to 62.50 percent of TFe, 0.20 to 0.80 percent of FeO, 0 to 0.80 percent of CaO, and SiO23.50～6.30％、MgO 0.03～0.25％、F 0.02～0.15％、P 0～0.10％、S 0.01～0.08％。
4. The method of reducing burnup of a sintered solid using controlled fuel particle size according to claim 1, wherein: the iron ore powder C comprises the following components in percentage by mass: 55.30 to 63.50 percent of TFe, 0.30 to 1.20 percent of FeO, 0 to 0.70 percent of CaO, and SiO23.80～5.50％、MgO 0.05～0.25％、F 0～0.20％、P 0.02～0.15％、S 0.005～0.085％。
5. The method of reducing burnup of a sintered solid using controlled fuel particle size according to claim 1, wherein: the alkalinity of the sintered ore is 1.95-2.05, and the mass percentage of MgO in the sintered ore is 2.1% -2.4%.
6. The method of reducing burnup of a sintered solid using controlled fuel particle size according to claim 1, wherein: the granulation time is 2-5 min; the mass percentage of the water in the mixture is 7-9%; the ignition time of sintering is 1-3 min, and the ignition negative pressure is 3000-6000 Pa; the sintering process is accompanied with air draft treatment, and the negative pressure of the air draft is 9000-12000 Pa.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116875798A (en) * | 2023-09-09 | 2023-10-13 | 吕梁建龙实业有限公司 | Iron ore sintering optimization method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000192153A (en) * | 1998-12-25 | 2000-07-11 | Nkk Corp | Sintered ore and production thereof, and operation of blast furnace |
| CN101928824A (en) * | 2009-06-22 | 2010-12-29 | 鞍钢股份有限公司 | Sintered ore production method capable of reducing sintered solid fuel consumption and improving strength |
| CN102417974A (en) * | 2011-12-09 | 2012-04-18 | 内蒙古包钢钢联股份有限公司 | Preparation method of fluorine-containing low-silicon sintering ore |
| CN106480308A (en) * | 2015-08-31 | 2017-03-08 | 鞍钢股份有限公司 | Method for reducing burnup of sintered solid |
| CN110257626A (en) * | 2019-06-11 | 2019-09-20 | 包头钢铁（集团）有限责任公司 | The method of sinter and the sinter of preparation are prepared using steel rolling iron scale |
| CN111471852A (en) * | 2020-06-16 | 2020-07-31 | 武汉钢铁有限公司 | Method for sintering waste activated carbon powder, sintering mixture and sintered ore |
-
2021
- 2021-12-15 CN CN202111536439.2A patent/CN114350936A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000192153A (en) * | 1998-12-25 | 2000-07-11 | Nkk Corp | Sintered ore and production thereof, and operation of blast furnace |
| CN101928824A (en) * | 2009-06-22 | 2010-12-29 | 鞍钢股份有限公司 | Sintered ore production method capable of reducing sintered solid fuel consumption and improving strength |
| CN102417974A (en) * | 2011-12-09 | 2012-04-18 | 内蒙古包钢钢联股份有限公司 | Preparation method of fluorine-containing low-silicon sintering ore |
| CN106480308A (en) * | 2015-08-31 | 2017-03-08 | 鞍钢股份有限公司 | Method for reducing burnup of sintered solid |
| CN110257626A (en) * | 2019-06-11 | 2019-09-20 | 包头钢铁（集团）有限责任公司 | The method of sinter and the sinter of preparation are prepared using steel rolling iron scale |
| CN111471852A (en) * | 2020-06-16 | 2020-07-31 | 武汉钢铁有限公司 | Method for sintering waste activated carbon powder, sintering mixture and sintered ore |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116875798A (en) * | 2023-09-09 | 2023-10-13 | 吕梁建龙实业有限公司 | Iron ore sintering optimization method |
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