Process Practice of LF Collected Dust Applied to 120 t Hot Metal Pot KR Stirring Desulphurization

刘勇; 王清波; 俞海明

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Process Practice of LF Collected Dust Applied to 120 t Hot Metal Pot KR Stirring Desulphurization

更新时间：2026-01-21

- Process Practice of LF Collected Dust Applied to 120 t Hot Metal Pot KR Stirring Desulphurization
- Special Steel Vol. 34, Issue 5, Pages: 41-43(2013)
- 作者机构：
  
  新疆八一钢铁集团股份有限公司第二炼钢厂,乌鲁木齐,830022
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：08 April 2013，
  
  Online First：22 September 2022，
  
  Published：22 September 2013
- 稿件说明：
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刘勇, 王清波, 俞海明. Process Practice of LF Collected Dust Applied to 120 t Hot Metal Pot KR Stirring Desulphurization[J]. Special Steel, 2013, 34(5): 41-43.
DOI：

刘勇, 王清波, 俞海明. Process Practice of LF Collected Dust Applied to 120 t Hot Metal Pot KR Stirring Desulphurization[J]. Special Steel, 2013, 34(5): 41-43. DOI：

摘要

初始S含量0.030%~0.070%的120 t铁水进行KR搅拌脱硫预处理时

加入60~80 kg高铝渣粉(/%:45.40A1、41.30Al

、4.65SiO

、1.17C、0.12P、0.33S)和971~1535 kg钙基混合脱硫剂[/%:80.19CaO、6.20CaF

、0.030(S+P)

]

脱硫8 min铁水终点S含量为0.001%~0.005%

该脱硫剂成本占脱硫总成本的70%以上。为降低成本采用LF除尘灰(/%:4.2~8.8SiO

、26~45CaO、7~15MgO、4~6TFe、20~40CaC

、10~20Al

、0.03~0.10P)替代部分混合脱硫剂

用60~80 kg高铝渣粉

783~1365 kg钙基混合脱硫剂+190 kg LF除尘灰对初始S含量0.030%~0.070%的120 t铁水进行KR搅拌脱硫预处理8 min

其终点s含量同样为0.001%~0.005%

取得较好的经济效果。

Abstract

As adding 60 ~ 80 kg high alumina slag powder (/% : 45.40A1

41.30A1

4.65SiO

1.17C

0.12P

0.33S) and 971-1535 kg calcium based mixed desulphurizer [/% ：80.19CaO

6.20CaF

0.030(S + P)

]

in 120 t hot metal pot with 0. 030% ~0. 070% initial S content to carry out KR stirring desulphurizing pretreatment for 8 min

the end S content in hot metal is 0. 001%-0.005% . With this process the cost of desulphurizer makes up more than 70% of the total cost of desulphurization. In order to reduce production cost

the LF collected dust (/% ： 4.2-8.8SiO

26-45CaO

7-15MgO

4-6TFe. 20-40CaC

10-20A1

0.03-0.10P) is used to replace part of mixed desulphurizer. With adding 60-80 kg high alumina slag powder and 783-1365 kg calcium based mixed desulphurizer + 190 kg LF collected dust in 120 t pot with 0.030%-0.070% initial S content in hot metal to carry out KR stirring desulphurizing pretreatment for 8 min

the hot metal end S content is also 0.001%-0.005% to get better economic effect.

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