TiO2含量对含钛高炉渣中铁聚合行为的影响

Influence of TiO_2 Content on Gathering of Iron in Titania Bearing Blast Furnace Slag

针对承钢含钛高炉渣黏度大,渣铁分离较差,炉渣中含金属铁2%左右,给高炉渣利用带来困难,使生铁成本升高等问题,研究了渣中铁的存在形式,TiO_2含量对渣中铁聚合的影响,以及铁聚合机理。研究结果表明:随着TiO_2含量的增加,渣样中的铁珠的聚合效果越来越差,铁珠聚沉的位置由渣样的底面和侧面转移到渣样的顶部和侧面,并且渣样与坩埚的界面产生了金红色高熔点物质Ti(C,N)。随着渣中TiO_2含量的增加,炉渣中的铁含量从0.4%持续升高到1%。

The viscosity of vanadium titano-magnetite slag from Chengde iron ＆ steel company is greater than the common slag, the separation of the slag-iron is difficult and the iron content in slag is about 2%, all of which make the usage of slag difficult and production cost higher. This study had been done to figure out the existence form of iron in slag, the influence of TiOz content on iron gathering as well as the gathering mechanism of iron. The results show that with of TiO2 content increasing, the quantity of gathering iron decreases, and the location of gathering iron changes there are high melting from bottom and side to side and top, meanwhile point Ti （C, N）particle appearing at the slag and the graphite crucible interface. With the content of TiO2 increasing,iron content in slag increases from 0.4% to 1%.