摘要
通过对转炉前期倒渣时机和吹炼工艺参数的研究,开发了一种减少渣量的转炉炼钢工艺。该工艺的转炉吹炼过程分2个阶段,分别是脱磷期和脱碳期,脱磷期结束后倒除部分富磷渣,然后进行小渣量脱碳,吹炼终点保留脱碳渣用以下一炉脱磷。实践结果表明:与常规冶炼工艺相比,减少渣量操作工艺的转炉石灰消耗由26 kg/t降至17 kg/t以下,轻烧白云石消耗由13 kg/t减少到9 kg/t以下,降低了转炉生产成本;吹炼终点钢水w(P)控制在0.008 0%～0.018 2%,平均为0.012 6%。
Steelmaking process of decreasing converter slag is developed for Shasteel by exploring the suitable intermediate deslagging time and blowing parameters. The blowing process is divided into two stages, dephosphorization and decarburization and upon completion of the dephosphorization process certain amount of slag is poured out and then the steel is refined again for decarburization with small amount of slag. After tapping, a small amount of decarburization slag remains in the converter for dephosphorizing of the next heat. Steelmaking using this process could reduce production cost by decreasing lime and dolomite consumption and improve the stability of steel composition by increasing the efficiency of dephosphorization. Industrial test results show that converter lime consumption is reduced to 17 kg/t steel from 26 kg/t, and dolomite consumption reduced from 13 kg/t to 9 kg/t, at the same time, the mass fraction of phosphorus could be controlled within 0. 0080 %~0.0182%, with the average content of 0. 0126%, at the end of blowing.
出处
《炼钢》
CAS
北大核心
2013年第2期6-8,18,共4页
Steelmaking
关键词
转炉
少渣冶炼
降低成本
石灰消耗
converter
less slag steelmaking
lower production cost
lime consumption
