CN1175117C - Process for preparing Mn-Si alloy from slags generated by smelting low-carbon ferromanganese - Google Patents
Process for preparing Mn-Si alloy from slags generated by smelting low-carbon ferromanganese Download PDFInfo
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- CN1175117C CN1175117C CNB011291974A CN01129197A CN1175117C CN 1175117 C CN1175117 C CN 1175117C CN B011291974 A CNB011291974 A CN B011291974A CN 01129197 A CN01129197 A CN 01129197A CN 1175117 C CN1175117 C CN 1175117C
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- slag
- manganese
- ladle
- low carbon
- carbon ferromanganese
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- 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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Abstract
The present invention relates to a process for preparing a Mn-Si alloy from slag generated by smelting mid-low carbon ferromanganese. At present, slag generated in a smelting process of mid-low carbon ferromanganese is waste slag which severely pollutes the environment and also loses metal manganese, and the process for preparing a Mn-Si alloy from slag generated by smelting the low-carbon ferromanganese of the present invention effectively solves the problems. The process for preparing a Mn-Si alloy from slag generated by smelting the mid-low carbon ferromanganese of the present invention is orderly composed of a deslagging procedure of a mid-low carbon and ferromanganese smelting furnace, a high temperature reducing and combining procedure of slag ladle compounding, a water quenching procedure of final slag, a cooling procedure of an ingot mould of manganese-silicon liquid and a demoulding and forming procedure. The present invention is characterized in that the slag of manganese oxide of which the temperature is about 1500DEGC with high content is put into slag ladles in the high temperature reducing and combining procedure of slag ladle compounding; simultaneously, ferrosilicon powder accounting for 15 to 20% of the weight of the slag is added; under the condition of sufficient swing, the slag and the ferrosilicon powder sufficiently contact at high temperature to generate reduction reaction and generate manganese and silicon dioxide; ferrosilicon and manganese are merged into manganese-silicon at high temperature. The present invention has the advantage that the manganese-silicon is prepared from the slag, so manganese oxide content in the slag is greatly reduced, and the slag becomes a cement raw material; the problems of the use and the environmental pollution of the slag are solved.
Description
Technical Field
The present invention relates to a method for utilizing ferromanganese smelting slag, in particular, it relates to a method for extracting contained metal manganese and producing manganese-silicon alloy material and cement raw material by using said slag.
Background
The invention aims to: provides a method for producing manganese-silicon alloy materials and cement raw materials by using medium-low carbon ferromanganese smelting slag, which aims to solve the problems of recycling the ferromanganese smelting slag waste and eliminating the environmental pollution caused by the waste.
The purpose of the invention is realized by implementing the following technical scheme:
a method for producing manganese-silicon alloy by using medium-low carbon ferromanganese smelting furnace slag sequentially comprises a medium-low carbon ferromanganese smelting furnace slag tapping process, a slag ladle batching high-temperature reduction fusion process, a final slag water quenching process, a manganese-silicon alloy liquid ingot mold cooling process and a demolding forming process, and is characterized in that: the slag ladle ingredient high-temperature reduction fusion process is characterized in that medium-low carbon ferromanganese smelting slag with the temperature of about 1500 ℃ is filled into a slag ladle, a ferrosilicon powder reducing agent with the weight of 15-20% of the slag is added, and the slag and the ferrosilicon powder are fully contacted at high temperature under the condition of full shaking to generate Reducing reaction to produce manganese and silicon dioxide, and high-temperature fusing ferrosilicon and manganese metal to form manganese-silicon alloy.
In the process of high-temperature reduction and fusion of slag ladle ingredients, slag and ferrosilicon powder reducing agent thereof which are filled into a slag ladle at about 1500 ℃ are fully contacted under the condition of full shaking, and the method is characterized in that: and (3) hoisting the proportioned slag ladle to a ladle shaking machine, shaking the slag ladle for 8-15 minutes at the rotating speed of 40-47 revolutions per minute to ensure that the two raw materials in the slag ladle are fully contacted and carry out reduction reaction.
The final slag water quenching process is characterized by comprising the following steps: and pouring the final slag subjected to the reduction reaction in the slag ladle into a water pool for water quenching treatment, so that final slag particles with the manganese oxide content lower than 5% are reduced and serve as raw materials for producing cement.
The invention has the advantages that: because the method can prepare manganese-silicon alloy from the waste medium-low carbon ferromanganese smelting slag and reduce the MnO content in the slag from 15-19% to below 5%, the loss of metal manganese in metallurgy is reduced, and the converted final slag can be used as a raw material for producing cement, thereby solving the problem of effective utilization of waste slag and the problem of environmental protection.
Drawings
The invention provides a process flow chart
Detailed Description
The conditions for implementing the process method are as follows:
smelting furnace: 1250 KV electric arc furnace
Hoisting equipment: one 12.5-ton traveling crane
Slag ladle: at least one 4-ton slag ladle
Shaking the bag machine: 15 ton bag shaking machine
Water pool
Ingot mould
The specific production process is as follows:
in the process of smelting medium-low carbon ferromanganese by an electric arc furnace, when furnace slag is discharged, the furnace slag at about 1500 ℃ is poured into a slag ladle, at the same time, silicon slag fine powder (silicon slag and silicon iron powder crystallized by silicon iron) accounting for 15-20% of the weight of the furnace slag is added into the slag ladle as a reducing agent, then the slag ladle is hung on a ladle shaking machine by a travelling crane, the ladle shaking machine shakes the slag ladle for 8-15 minutes at the rotating speed of 40-47 revolutions per minute, so that the furnace slag and the silicon slag fine powder can be fully contacted at high temperature, and manganese oxide in the furnace slag is subjected to reduction reaction( ) Generating manganese metal and silicon dioxide, stopping the ladle rocking machine, standing for several minutes to enable the manganese metal and the silicon iron to be fused into manganese-silicon alloy at high temperature, then pouring the treated final slag into a water tank for water quenching treatment, and changing the water quenched final slag into small particles with MnO content less than 5%, wherein the small particles can be used as waterA raw material of mud; the manganese-silicon alloy liquid in the slag ladle has larger specific gravity and is settled at the bottom of the slag ladle, the manganese-silicon alloy liquid remained at the bottom of the slag ladle is poured into an ingot mould after the final slag is poured into a water tank, the manganese-silicon alloy liquid is cooled and then is demoulded and formed, and the manganese-silicon alloy ingot is precisely loaded and warehoused. Through content analysis, the manganese-silicon alloy product comprises the following components in percentage by weight: 52 to 62 percent of manganese, 19 to 28 percent of silicon, about 20 percent of iron, 0.3 to 0.5 percent of carbon, the balance of S and 0.08 to 0.15 percent of phosphorus; final slag water quenching powder: 1.94-5.08% of manganese oxide, 36-42% of silicon dioxide, 39-45% of calcium oxide, 2.5-5% of magnesium oxide and the balance of phosphorus.
The method is also suitable for the external treatment of the medium-low carbon chromium smelting slag.
Claims (3)
1. A method for producing manganese-silicon alloy by using medium-low carbon ferromanganese smelting furnace slag sequentially comprises a medium-low carbon ferromanganese smelting furnace slag tapping process, a slag ladle batching high-temperature reduction fusion process, a final slag water quenching process, a manganese-silicon alloy liquid ingot mold cooling process and a demolding forming process, and is characterized in that: the slag ladle ingredient high-temperature reduction fusion process is characterized in that medium-low carbon ferromanganese smelting slag with the temperature of about 1500 ℃ is filled into a slag ladle, a ferrosilicon powder reducing agent with the weight of 15-20% of the slag is added, and the slag and the ferrosilicon powder are fully contacted at high temperature under the condition of full shaking to generate Reducing reaction to produce manganese and silicon dioxide, and high-temperature fusing ferrosilicon and manganese metal to form manganese-silicon alloy.
2. The method for producing manganese-silicon alloy from medium-low carbon ferromanganese smelting slag according to claim 1, wherein: and (3) hoisting the proportioned slag ladle to a ladle shaking machine, shaking the slag ladle for 8-15 minutes at the rotating speed of 40-47 revolutions per minute to ensure that the two raw materials in the slag ladle are fully contacted and carry out reduction reaction.
3. The method for producing manganese-silicon alloy from medium-low carbon ferromanganese smelting slag according to claim 1, wherein: and pouring the final slag subjected to the reduction reaction in the slag ladle into a water pool for water quenching treatment, so that final slag particles with the manganese oxide content lower than 5% are reduced and serve as raw materials for producing cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011291974A CN1175117C (en) | 2001-12-17 | 2001-12-17 | Process for preparing Mn-Si alloy from slags generated by smelting low-carbon ferromanganese |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011291974A CN1175117C (en) | 2001-12-17 | 2001-12-17 | Process for preparing Mn-Si alloy from slags generated by smelting low-carbon ferromanganese |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1363698A CN1363698A (en) | 2002-08-14 |
| CN1175117C true CN1175117C (en) | 2004-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011291974A Ceased CN1175117C (en) | 2001-12-17 | 2001-12-17 | Process for preparing Mn-Si alloy from slags generated by smelting low-carbon ferromanganese |
Country Status (1)
| Country | Link |
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| CN (1) | CN1175117C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009507636A (en) * | 2005-09-12 | 2009-02-26 | メッキ，アントン | Metallurgical slag processing |
| CN101550467B (en) * | 2008-03-31 | 2012-02-15 | 漆瑞军 | Process for producing high silicon manganese-silicon alloy by using electric refining furnaces |
| CN103045873B (en) * | 2013-01-24 | 2014-12-24 | 成都牧甫生物科技有限公司 | Method for directly obtaining alloy from blast-furnace molten-state slag |
| CN103710478B (en) * | 2013-12-27 | 2015-06-10 | 广西铁合金有限责任公司 | Method and device for preparing pure manganese ore with automatic sintering and preferential reduction by powder spraying of manganese silicon slag |
| CN106119542B (en) * | 2016-07-18 | 2018-11-02 | 周三虎 | Silicon-manganese alloy smelting process |
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2001
- 2001-12-17 CN CNB011291974A patent/CN1175117C/en not_active Ceased
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| CN1363698A (en) | 2002-08-14 |
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Decision date of declaring invalidation: 20070515 Decision number of declaring invalidation: 9790 |