镍铁冶炼渣资源化利用技术进展及展望

Development and prospect of resource utilization technology of ferronickel smelting slag

镍铁是生产不锈钢的主要原料,目前主要采用回转窑-电炉工艺(RKEF)生产。RKEF工艺存在高能耗、冶炼渣量大的问题。本文介绍了NKK、Merotec等渣显热回收工艺及相关工艺参数;前苏联利用液态镍铁渣生产矿棉工业化生产的相关工艺参数;以及日本、希腊及我国镍铁渣资源化利用研究进展。提出了我国镍铁渣资源化利用的研究重点和研究方向。

The main raw material used in the production of stainless steel is ferronickel, and the key process is ro- tary kiln electric furnace at present. The disadvantages of RKEF process are high energy consumption and large a- mounts of smelting slag. The slag sensible heat recovery process of NKK and Merotec, etc. and its corresponding process parameters were presented in this paper. The corresponding process parameters of mineral-wool industrial production used liquid ferronickel slag in former Soviet Union, and the research development of ferronickel slag re- cycling in Japan, Greek and China were introduced. The focus and direction of research of ferronickel slag recy- cling in China were proposed.