CN114606404A - Method for producing manganese-silicon alloy by using steel slag to replace light-burned dolomite - Google Patents
Method for producing manganese-silicon alloy by using steel slag to replace light-burned dolomite Download PDFInfo
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- CN114606404A CN114606404A CN202210224299.3A CN202210224299A CN114606404A CN 114606404 A CN114606404 A CN 114606404A CN 202210224299 A CN202210224299 A CN 202210224299A CN 114606404 A CN114606404 A CN 114606404A
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- slag
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- manganese
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- burned dolomite
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- 239000002893 slag Substances 0.000 title claims abstract description 126
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 42
- 239000010959 steel Substances 0.000 title claims abstract description 42
- 229910000514 dolomite Inorganic materials 0.000 title claims abstract description 38
- 239000010459 dolomite Substances 0.000 title claims abstract description 38
- 229910000676 Si alloy Inorganic materials 0.000 title claims abstract description 31
- PYLLWONICXJARP-UHFFFAOYSA-N manganese silicon Chemical compound [Si].[Mn] PYLLWONICXJARP-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000009628 steelmaking Methods 0.000 claims abstract description 52
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229910052742 iron Inorganic materials 0.000 claims abstract description 19
- 239000000126 substance Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 20
- 239000011572 manganese Substances 0.000 claims description 20
- 229910052748 manganese Inorganic materials 0.000 claims description 17
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 15
- 239000000377 silicon dioxide Substances 0.000 claims description 10
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000000571 coke Substances 0.000 claims description 7
- 230000002378 acidificating effect Effects 0.000 claims description 3
- 229910052681 coesite Inorganic materials 0.000 claims description 3
- 229910052906 cristobalite Inorganic materials 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 229910052682 stishovite Inorganic materials 0.000 claims description 3
- 229910052905 tridymite Inorganic materials 0.000 claims description 3
- 229910000616 Ferromanganese Inorganic materials 0.000 claims 3
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 3
- 238000010079 rubber tapping Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C22/00—Alloys based on manganese
Abstract
The invention discloses a method for producing manganese-silicon alloy by using steel slag to replace light-burned dolomite, which comprises the following steps: calculating the material mixing ratio according to the chemical components of the steelmaking slag; adding the steel-making slag with the calculated mixture ratio into the furnace, and controlling the alkalinity of the slag to be 0.7-0.9; in order to meet the technical conditions for producing the manganese-silicon alloy, the addition of part of high-iron manganese ore is reduced, and the iron content in the raw materials is unchanged. According to the invention, the steel-making slag replaces light-burned dolomite, so that the resource utilization rate can be effectively improved, good economic benefits are created on the premise of ensuring that the chemical components of the manganese-silicon alloy meet the requirements, the land occupation is reduced, the environment is protected, the energy conservation and emission reduction are promoted, and the circular economy is developed; the steel-making slag has low price, and can reduce the cost of raw materials and increase the yield after replacing high-price light-burned dolomite.
Description
Technical Field
The invention relates to the technical field of metallurgy, in particular to a method for producing manganese-silicon alloy by using steel-making slag to replace light-burned dolomite.
Background
According to the characteristics of raw materials and technical requirements, the manganese-silicon alloy produced by the submerged arc furnace is important for improving the kinetic reaction condition of manganese element and controlling the alkalinity of furnace slag well in smelting. In the traditional process, the alkalinity of the slag is adjusted by adding light-burned dolomite (the main components are CaO and MgO), so that the stability and the smoothness of the furnace condition are ensured. The main disadvantages of the process are as follows: the light-burned dolomite has higher price, which causes higher auxiliary material cost and higher manganese-silicon alloy production cost.
Disclosure of Invention
The invention aims to provide a method for producing manganese-silicon alloy by using steel slag to replace light-burned dolomite.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a method for producing manganese-silicon alloy by using steel slag to replace light-burned dolomite comprises the following steps:
s1, calculating the mixture ratio according to the chemical components of the steelmaking slag;
s2, adding the steel-making slag with the calculated mixture ratio into the furnace, and controlling the alkalinity of the slag to be 0.7-0.9;
s3, in order to meet the technical conditions for producing the manganese-silicon alloy, the addition of part of the high-iron manganese ore needs to be reduced according to the Fe content brought by the steel-making slag.
Preferably, the slag basicity is the ratio of basic oxides to acidic oxides in the slag, i.e. slag basicity = (CaO + MgO)/SiO 2.
Preferably, the content of SiO2 in the furnace slag is 38-40%, and in order to ensure that the alkalinity of the furnace slag is 0.7-0.9, the content of (CaO + MgO) needs to be controlled between 27-26%.
Preferably, the specific steps of step S1 are: in order to ensure that the alkalinity of the slag is between 0.7 and 0.9, 50 kg/batch of light-burned dolomite needs to be added, and the content of (CaO + MgO) is between 85 and 88 percent; the steel-making slag in the step S1 mainly comprises the following components: CaO%: 40-42%, MgO%: 4-6%, SiO 2%: 12-14%, Fe%: 19.5-21%, the content of CaO and MgO is about 44-48%, after the steel-making slag is used for replacing light-burned dolomite, 50kg of steel-making slag (85-88%)/(44-48%) = 91.6-96.6 kg is required to be added, and the content of the steel-making slag accounts for 9-11% of the total proportion of the slag.
Preferably, the specific steps of step S3 are: the preparation method comprises the following steps of (1) preparing a raw material: 32 percent of manganese ore, 18 percent of south African high-iron manganese ore, 15 percent of manganese-rich slag, 5 percent of light-burned dolomite, 14 percent of coke and 16 percent of silica, adding 9 percent of steel-making slag to replace the light-burned dolomite, reducing 4 percent of south African high-iron ore due to the introduction of part of Fe, and proportioning after adding the steel-making slag: 32% of manganese ore with a hood, 14% of high-iron manganese ore in south Africa, 15% of manganese-rich slag, 9% of steel-making steel slag, 14% of coke and 16% of silica.
Compared with the prior art, the invention has the advantages that:
according to the invention, the steel-making slag is used for replacing light-burned dolomite, so that the resource utilization rate can be effectively improved, good economic benefits are created on the premise of ensuring that the mechanical properties of the manganese-silicon alloy meet the requirements, the land occupation is reduced, the environment is protected, the energy conservation and emission reduction are promoted, and the circular economy is developed; the steel-making slag has low price, and can reduce the cost of raw materials and increase the yield after replacing high-price light-burned dolomite.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a composition chart of a manganese-silicon alloy produced by an example of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention will be more clearly and clearly defined.
The same as steel-making production, the premise is that the chemical components of the slag are well controlled, how to well control the chemical components of the slag is particularly critical to meet the requirement of proper slag alkalinity, in recent production practice, through groping tests, the slag alkalinity for smelting the manganese-silicon alloy is preferably controlled to be 0.7-0.9, and the slag alkalinity is the ratio of alkaline oxides to acidic oxides in the slag: slag alkalinity = (CaO + MgO)/SiO 2, and the content of SiO2 in the slag is 38-40%.
The manganese-silicon alloy production needs main raw materials as follows: the method is characterized in that manganese ore, south African high-iron manganese ore, manganese-rich slag, light-burned dolomite, steel-making steel slag, coke and silica are added, in order to meet the technical conditions for producing manganese-silicon alloy, the iron content in the raw materials is required to be certain, the steel slag dosage is increased, the iron content in the raw materials needs to be correspondingly reduced, namely the blending amount of south African high-iron ore is reduced, and the iron content in the raw materials is enabled to be unchanged.
The preparation method comprises the following steps of (1) preparing a raw material: 32 percent of manganese ore, 18 percent of south African high-iron manganese ore, 15 percent of manganese-rich slag, 5 percent of light-burned dolomite, 14 percent of coke and 16 percent of silica, adding 9 percent of steel-making slag to replace the light-burned dolomite, reducing 4 percent of south African high-iron ore due to the introduction of part of Fe, and proportioning after adding the steel-making slag: 32% of manganese ore with calash, 14% of high-iron manganese ore in south Africa, 15% of manganese-rich slag, 9% of steel-making steel slag, 14% of coke and 16% of silica.
Example one
The content of light-burned dolomite (CaO + MgO) is detected to be 85%, steel-making slag is used for replacing the light-burned dolomite, the ingredient ratio is accurately calculated according to the chemical components (CaO and MgO contents) of the steel-making slag, and the main components of the steel-making slag are detected: CaO%: 40%, MgO%: 4%, SiO 2%: 12%, Fe%: 19.5 percent, the content of (CaO + MgO) is 44 percent, 50kg of light-burned dolomite is required to be added in each batch, and after the steel slag is used for substitution, 50kg of steel slag is required to be added, 85 percent/44 percent (= 96.6 kg), accounting for 11 percent of the total proportion. Considering the influence factors of the Fe content in the steel-making slag on the Mn/Fe ratio, accurately calculating the quantity of the steel-making slag in the furnace under the condition of meeting the technical condition of producing the manganese-silicon alloy, introducing part of Fe into the steel-making slag after adding the steel-making slag, and reducing the adding amount of part of high-iron manganese ores to meet the technical condition of producing the manganese-silicon alloy according to the introduced Fe content, wherein after 96.6 kg/batch of steel slag is added, the adding amount of south African high-iron ores (the iron content is 20-22%) needs to be reduced to 96.6kg 19.5%/(20-22%) = 85.62-94.19 kg. And periodically sampling the converter steel slag, adjusting the charging amount of the steel-making slag in time according to the change condition of the chemical components of the converter steel slag, and accurately calculating the charging amount of the steel-making slag. If the content of (CaO + MgO) in the steel-making slag is reduced to 40 percent, 50kg of the steel-making slag is added by 85 percent/40 percent (= 106.25 kg), so that the proper slag alkalinity is ensured, and the aim of smoothly tapping and discharging slag is fulfilled.
The manganese-silicon alloy prepared by the method comprises the chemical components of (C: 1.2%, Si: 18.5%, Mn: 63.5%, P: 0.173% and S: 0.04%), and meets the requirements of the national standard GB/T4008-.
Example two
The content of light-burned dolomite (CaO + MgO) is 86% by detection, steel-making slag is used for replacing the light-burned dolomite, the proportioning ratio is accurately calculated according to the chemical components (CaO and MgO contents) of the steel-making slag, and the main components of the steel-making slag are detected as follows: CaO%: 41%, MgO%: 5%, SiO 2%: 13%, Fe%: 20 percent, the content of (CaO + MgO) is 46 percent, 50kg of light-burned dolomite needs to be added in each batch, and after the light-burned dolomite is replaced by the steel slag, 50kg of steel slag needs to be added, 86 percent/46 percent, and 93.48kg of steel slag account for 10 percent of the total weight. Considering the influence factors of the Fe content in the steel slag on the Mn/Fe ratio, accurately calculating the quantity of the steel slag entering the furnace under the condition of meeting the technical condition of producing the manganese-silicon alloy, after the steel slag is added, the steel slag carries part of Fe, and according to the carried Fe content, in order to meet the technical condition of producing the manganese-silicon alloy, the adding quantity of part of the high-iron manganese ore needs to be reduced, and the steel slag of the furnace is sampled periodically, (after 93.48kg of the steel slag is added, the adding quantity of south African high-iron ore (the iron content is 20-22%) needs to be reduced to 93.48kg of 20%/(20-22%) = 84.98-93.48 kg., according to the change condition of chemical components, the adding quantity of the steel slag needs to be adjusted in time, and the adding quantity of the steel slag needs to be accurately calculated, when the (CaO + MgO) content in the steel slag is reduced to 45%, 50kg of 85%/45%/94.44 kg of the steel slag needs to be added, so as to ensure proper alkalinity, the purpose of smooth tapping and slag discharge is achieved.
The manganese-silicon alloy prepared by the method comprises the chemical components of (C: 1.1%, Si: 18.8%, Mn: 63.2%, P: 0.176% and S: 0.04%), and meets the requirements of the national standard GB/T4008-.
EXAMPLE III
The content of light-burned dolomite (CaO + MgO) is 88% by detection, steel-making slag is used for replacing the light-burned dolomite, the proportioning ratio is accurately calculated according to the chemical components (CaO and MgO content) of the steel-making slag, and the main components of the steel-making slag are detected as follows: CaO%: 42%, MgO%: 6%, SiO 2%: 14%, Fe%: 21.5 percent, 48 percent of (CaO + MgO), 50kg of light-burned dolomite per batch, and 50kg of steel slag 88%/48% =91.66kg after steel slag replacement, wherein the steel slag accounts for 10 percent of the total proportion. Considering the influence factors of the Fe content in the steel slag on the Mn/Fe ratio, accurately calculating the quantity of the steel slag entering the furnace under the condition of meeting the technical conditions of producing the manganese-silicon alloy, after adding the steel slag, introducing part of Fe into the steel slag, and according to the introduced Fe content, reducing the adding amount of part of the high-iron manganese ore to meet the technical conditions of producing the manganese-silicon alloy, and periodically sampling the steel slag of the furnace, (newly adding 93.48 kg/batch of steel slag, reducing the adding amount of south African high-iron ore (the iron content is about 20-22%) to 91.66kg 21.5%/(20-22%) = 89.58-98. 98.53 kg., timely adjusting the adding amount of the steel slag according to the change condition of chemical components, accurately calculating the adding amount of the steel slag, if the (CaO + MgO) content in the steel slag is reduced to 46%, adding 50kg 85%/46% =92.39kg of the steel slag to ensure proper alkalinity, the aim of smoothly tapping and deslagging is achieved.
The manganese-silicon alloy prepared by the method comprises the chemical components of (C: 1.25%, Si: 18.36%, Mn: 63.6%, P: 0.185% and S: 0.04%), and meets the requirements of the national standard GB/T4008-.
Referring to fig. 1, the manganese-silicon alloy prepared by the embodiments of the present invention has chemical compositions meeting the national standard requirements, and can effectively improve the resource utilization rate.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, various changes or modifications may be made by the patentees within the scope of the appended claims, and within the scope of the invention, as long as they do not exceed the scope of the invention described in the claims.
Claims (5)
1. A method for producing manganese-silicon alloy by using steel slag to replace light-burned dolomite is characterized by comprising the following steps:
s1, calculating the mixture ratio according to the chemical components of the steel-making slag;
s2, adding the steel-making slag with the calculated mixture ratio into the furnace, and controlling the alkalinity of the slag to be 0.7-0.9;
s3, according to the Fe content brought by the steel-making slag, reducing the blending amount of part of high ferro-manganese ore to make the iron content in the raw material unchanged.
2. The method for producing manganese-silicon alloy by using steel-making slag instead of light burned dolomite according to claim 1, wherein the method comprises the following steps: the slag basicity is the ratio of basic oxides to acidic oxides in the slag, i.e. slag basicity = (CaO + MgO)/SiO 2.
3. The method for producing manganese-silicon alloy by using steel-making slag instead of light burned dolomite according to claim 1, wherein the method comprises the following steps: the content of SiO2 in the furnace slag is 38-40%, and the content of (CaO + MgO) needs to be controlled between 27-26% in order to ensure the alkalinity of the furnace slag to be 0.7-0.9.
4. The method for producing manganese-silicon alloy by using steel-making slag instead of light burned dolomite according to claim 1, wherein the step S1 comprises the following steps: in order to ensure that the alkalinity of the slag is about 0.8, 50 kg/batch of light-burned dolomite needs to be added, and the content of (CaO + MgO) is 85-88%; the steel-making slag in the step S1 mainly comprises the following components: CaO%: 40-42%, MgO%: 4-6%, SiO 2%: 12-14%, Fe%: 19.5-21%, the content of (CaO + MgO) is 44-48%, after the steel-making slag is used for replacing light-burned dolomite, 50kg of steel-making slag (85-88%)/(44-48%) = 91.6-96.6 kg is required to be added, and the content of the steel-making slag accounts for 9-11% of the total proportion of the slag.
5. The method for producing manganese-silicon alloy by using steel-making slag instead of light burned dolomite according to claim 1, wherein the step S3 comprises the following steps: the preparation method comprises the following steps of (1) preparing a raw material: 32% of manganese ore, 18% of south African high-ferro manganese ore, 15% of manganese-rich slag, 5% of light-burned dolomite, 14% of nut coke and 16% of silica, 9% of steel-making slag is added to replace the light-burned dolomite, 4% of south African high-ferro manganese ore is reduced due to partial Fe, and the proportion is as follows: 32% of manganese ore with calash, 14% of high-iron manganese ore in south Africa, 15% of manganese-rich slag, 9% of steel-making steel slag, 14% of coke and 16% of silica.
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101914651A (en) * | 2010-08-19 | 2010-12-15 | 遵化市励拓环保科技有限公司 | Converter or electric furnace steel-making slagging agent and preparation process thereof |
| CN103014470A (en) * | 2012-11-30 | 2013-04-03 | 广西新振锰业集团有限公司 | Method of using common rock ballast as slag-modifier agent for silicomanganese alloy smelting |
| CN103215408A (en) * | 2013-04-28 | 2013-07-24 | 山东广富集团有限公司 | Method for converter steelmaking by adding steel slag blocks |
| CN103555973A (en) * | 2013-07-23 | 2014-02-05 | 内蒙古鄂尔多斯冶金有限责任公司 | Formula for recycling silicon-manganese alloy slag during silicon-manganese alloy production |
| CN103695596A (en) * | 2013-12-05 | 2014-04-02 | 广西敏诚矿业有限公司 | Recycling method for producing silicomanganese alloy and medium and low carbon ferromanganese |
| US20160160302A1 (en) * | 2013-07-08 | 2016-06-09 | Ecofer, S.R.O. | Fluxing agent, process of its production, agglomeration mixture and use of slug from secondary metallurgy |
| CN107354338A (en) * | 2017-07-27 | 2017-11-17 | 江苏省冶金设计院有限公司 | The method for preparing manganese-silicon |
| CN108660277A (en) * | 2018-03-28 | 2018-10-16 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of cold conditions slag return semi-steel making converter renewable resources low cost process for making |
| CN109518011A (en) * | 2019-01-16 | 2019-03-26 | 石嘴山市惠农区宏丰工贸有限公司 | Silicon manganese slag is melted down instead of dolomite Smelting Simn In A technique |
| CN110964878A (en) * | 2019-12-26 | 2020-04-07 | 北京科技大学 | Dephosphorizing agent for efficiently dephosphorizing for converter and preparation method and application thereof |
| CN111235331A (en) * | 2020-01-17 | 2020-06-05 | 吉林省金源科技有限公司 | Production method of silicon-manganese-vanadium composite alloy |
| CN112921177A (en) * | 2019-12-07 | 2021-06-08 | 平罗县东升冶金化工有限公司 | Efficient smelting method for silicon-manganese alloy |
-
2022
- 2022-03-09 CN CN202210224299.3A patent/CN114606404A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101914651A (en) * | 2010-08-19 | 2010-12-15 | 遵化市励拓环保科技有限公司 | Converter or electric furnace steel-making slagging agent and preparation process thereof |
| CN103014470A (en) * | 2012-11-30 | 2013-04-03 | 广西新振锰业集团有限公司 | Method of using common rock ballast as slag-modifier agent for silicomanganese alloy smelting |
| CN103215408A (en) * | 2013-04-28 | 2013-07-24 | 山东广富集团有限公司 | Method for converter steelmaking by adding steel slag blocks |
| US20160160302A1 (en) * | 2013-07-08 | 2016-06-09 | Ecofer, S.R.O. | Fluxing agent, process of its production, agglomeration mixture and use of slug from secondary metallurgy |
| CN103555973A (en) * | 2013-07-23 | 2014-02-05 | 内蒙古鄂尔多斯冶金有限责任公司 | Formula for recycling silicon-manganese alloy slag during silicon-manganese alloy production |
| CN103695596A (en) * | 2013-12-05 | 2014-04-02 | 广西敏诚矿业有限公司 | Recycling method for producing silicomanganese alloy and medium and low carbon ferromanganese |
| CN107354338A (en) * | 2017-07-27 | 2017-11-17 | 江苏省冶金设计院有限公司 | The method for preparing manganese-silicon |
| CN108660277A (en) * | 2018-03-28 | 2018-10-16 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of cold conditions slag return semi-steel making converter renewable resources low cost process for making |
| CN109518011A (en) * | 2019-01-16 | 2019-03-26 | 石嘴山市惠农区宏丰工贸有限公司 | Silicon manganese slag is melted down instead of dolomite Smelting Simn In A technique |
| CN112921177A (en) * | 2019-12-07 | 2021-06-08 | 平罗县东升冶金化工有限公司 | Efficient smelting method for silicon-manganese alloy |
| CN110964878A (en) * | 2019-12-26 | 2020-04-07 | 北京科技大学 | Dephosphorizing agent for efficiently dephosphorizing for converter and preparation method and application thereof |
| CN111235331A (en) * | 2020-01-17 | 2020-06-05 | 吉林省金源科技有限公司 | Production method of silicon-manganese-vanadium composite alloy |
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