转炉炼钢粉尘的内循环利用研究  

Research on cyclic utilization of converter steelmaking dust in BOF

作　　者：柯建祥 

机构地区：[1]福建三钢集团闽光股份有限公司,福建三明365000

出　　处：《炼钢》2013年第2期71-74,共4页Steelmaking

摘　　要：基于转炉炼钢过程的造渣和温度控制机理,利用污泥、除尘灰及粘结剂等原料加工成粉尘球团,在冶炼前期代替铝系化渣剂进行化渣、中后期代替矿石进行调温。研究发现:转炉炼钢过程内循环利用粉尘球团,与采用铝系化渣剂和矿石相比,脱磷率提高了4.9%,可达到80.7%,炉渣的发泡性能和流动性能良好,炉渣碱度和铁损基本相同。既可有效回收铁等有价资源,也可减少环境污染,实现炼钢副产品资源的内循环利用。Based on the mechanism of slagging and temperature controlhng m BOF steelmaking process, raw materials, such as sludge, dust ash and binders, are processed into dust pellets to replace the aluminum slagging agents for slag melting in the early smelting stage and to substitute the iron ore for temperature adjustment in the middle and late stage. It is found that compared with aluminum slagging agents and ores, when dust pellets are recycled in BOF steelmaking process, dephosphorization rate can reach 80. 7 % and increase by 4. 9 %. In addition, foaming and flowing properties of slag are very good, and the basicity of slag and iron loss are almost the same. Valuable resources, such as iron, can be recycled. At the same time, environmental pollution can be reduced, and steelmaking by-product resources can be recycled in the steelmaking process.

关 键 词：转炉炼钢 粉尘 循环利用 脱磷 

分 类 号：TF729.5[冶金工程—钢铁冶金]