8th International Congress on Science and Technology of Ironmaking - ICSTI 2018

Abstract: In this paper, on the basis of system of CDQ dust block test, thermal insulation performance test of CDQ dust in laboratory and industrial application is studied, the performance of CDQ dust as thermal insulation agent of molten iron and impact of [S] in iron is comprehensive analyzed, and on the performance of CDQ dust, carbonized rice husk and composite preservation agent etc is comparative tested. The results show that the thermal insulation performance of the CDQ dust as molten iron thermal insulation agent is equivalent to carbonized rice husk, and which is higher than the composite insulation agent, and has no obvious effect on the [S] of molten steel. Compared to carbonized rice husk and composite insulation agent, CDQ dust is directly from the metallurgical enterprises, has stable composition and stable quality, and the quality won't decline by the reason of interference on such as the product cost, raw material source, and other factors. So the CDQ dust has obvious advantages on stable product quality, and have broad application prospect.