精炼渣循环利用技术分析  

Analysis of Recycling Technology of Refining Slag

作　　者：王念欣[1] 唐立冬[1] 赵志洪[1] 徐学永[1] 

机构地区：[1]济南钢铁股份有限公司第三炼钢厂,山东济南250101

出　　处：《山东冶金》2007年第4期55-56,共2页Shandong Metallurgy

摘　　要：为了实现精炼渣循环利用,分别对精炼渣样成分、精炼渣脱硫能力及精炼渣循环利用过程中对生产工艺的影响等进行了分析。结果表明,精炼渣循环3次以内,不会影响炉渣脱硫及钢包透气性,而且不会造成钢水的回硅、回磷。目前济钢第三炼钢厂精炼渣利用率45%以上,实现浇余回收0.6 t/炉,吨钢可降低石灰消耗3.5 kg、萤石消耗1.2 kg;LF炉处理时吨钢电耗约降低3 kW.h;降低了废渣排放,取得了显著的经济效益和社会效益。In order to realize recyding of refining slag, it was analyzed that the component change and desulphurizafion ability of refining slag and the influence of recycling technology on the production process. The results indicate that the recycling of refining slag within 3 times will not cause adverse effects on the desulphurization of the refining slag and the permeability of the ladle, and will not cause resilicon and rephosphorization in steel. Now in Jinan Steel No.3 Steelmaking Plant, the rate of recycling is above 45%, realizing the reclaim of the remaining molten steel 0.6 t per ladle, reducing the consuming,of lime 3.5 kg/t, the fluorite 1.2 kg/t and the power 3 kW.h/t in LF, decreasing the let of waste slag and so achieving remarkable economic benefits and social benefits.

关 键 词：精炼渣 循环利用技术 脱硫 钢包透气性 回磷 

分 类 号：TF769.2[冶金工程—钢铁冶金] X757[环境科学与工程—环境工程]