The Slag Melting Characteristic and its Recycling Use Effects for BOF Less Slag Smelting

摘要：

　　The slag melting characteristic after slag splashing for 300t BOF less slag process is researched.The results of the petrographic analysis show the main component of slag after slag splashing is C3S,C2S,RO phase and C4AF phase.There is higher total iron and phosphorus content in slag.The steel slag in the decarburization converter is treated by little water-spreading methods,which is used as the furnace burden of the dephosphorization converter.The results show there are a lot of calcium ferrite in the slag,which is beneficial to dephosphorization and slag melting.The recycling slag is added to dephosphorization converter each charge by 3 or 6tons.The results show that the saving lime is 0.7-1 tons each charge.The petrographic constitute of final slag for the dephosphorization converter by adding the recycling slag is dicalcium silicate,RO phase and glass phase.There is a little calcium ferrite phase in the recycling slag,which is helpful to dephosphorization.So there are better dephosphorization effects for the recycling slag.

关键词： less slag smelting slag melting characteristics the dephosphorization converter the recycling slag

作者: Wu Wei

作者单位: Metallurgical Technology Research Department of Central Iron & Steel Research Institute, Beijing 100081, China

会议类型: 国际会议

会议名称: The 4th Australia-China-Japan Joint Symposium on Iron and Steelmaking(第四届中日澳钢铁冶金学术会议)

会议地点: 沈阳

会议语种:英文

页码: 268-272

在线出版日期: 2012-11-03（万方平台首次上网日期，不代表论文的发表时间）