摘要
基于铝镇静钢脱硫的热力学理论开发了一种无氟低熔点深脱硫渣系,其基础渣系为CaO-Al2O3-SiO2,成分为:w(CaO)=57%～62%,w(SiO2)=5%～10%,w(Al2O3)=29%～36%。实际应用时,基础渣占总渣量的85%～95%,渣中w(MgO)和w(T.Fe+MnO)分别控制为10%和1.5%以下。将该渣系用于SPA-H耐候钢的精炼生产中,当钢水的初始w(S)<160×10-6时,终点w(S)可控制在20×10-6左右,脱硫率达到75%以上,渣量从15 kg/t降低到10 kg/t,有效降低了钢包精炼的脱硫成本。
A novel low melting point and fluoride-free CaO-AI203-SiO2 based slag system for deep desulphurization of low carbon aluminum killed （LCAK） steel has been devel- oped on thermodynamics basis. The composition of the basic slag is w（CaO） = 57 %- 62 %,w（SiO2） = 5 % - 10 %, w（A12 03 ） = 29 %-36 %. In the industrial application, the basic slag turned out to be 85 %-95 %, w（MgO）〈10% and ze（T. Fe＋ MnO） 〈2 1.5 %. The novel slag system was used for the LF refining of SPA-H steel to make the final sulfur content about 20 x 10-6, when the initial sulfur content was less than 160 x 10-6. Corresponding desulphurization ratio was higher than 75 G, and hence the slag consumption was reduced from 15 kg/t to i0 kg/t thus the cost is reduced accordin^iv.
出处
《炼钢》
CAS
北大核心
2012年第5期52-55,64,共5页
Steelmaking
关键词
深脱硫
无氟
脱硫渣
钢包精炼
deep desulphurization
fluoride-free
desulphurization slag
LF refining
