Reduction of Cr during Smelting Treatment of Stainless Steel Dust
作者单位：State Key Laboratory of Advanced Metallurgy University of Science and Technology
会议名称：《“第十届中国钢铁年会”暨“第六届宝钢学术年会”》
会议日期：2015年
学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 080602[工学-钢铁冶金] 08[工学] 0806[工学-冶金工程]
基 金：financially supported by National Natural Science Foundation of China (No.51474021)
关 键 词：stainless steel dust activity coefficient partition ratios chromium
摘 要：Staniless steel dust contains a remarkable content of Cr oxides which is *** a practical method,Smelting treatment is chosen to recover Cr resource in stainless steel *** of Cr between the recovered melt and the residual slag phase depends on the activity coefficient of Cr in the metal phase（Crγ）and the activity coefficient of Cr O in the slag（Cr Oγ）.Both Crγin Fe-Cr-Ni-C（-Si/Al）melt and Cr Oγin Ca O-Si O2-Mg O-Al2O3slag under different situations were firstlypredicted through thermodynamic *** research on reduction of Cr during smelting treatment of stainless steel dust was performed in this *** suggested that the recovery ratios of valuable metals increased with increasing%Ca O/%Si O2of the residual slag to 1.17 and then decreased.A good linear relationship betweenthe apparent distribution ratio of Cr（m/s Cr L）and Cr O Crγ/γwas observed.