Feasibility of co-reduction roasting of a saprolitic laterite ore and waste red mud
Feasibility of co-reduction roasting of a saprolitic laterite ore and waste red mud作者机构：School of Civil and Resource Engineering University of Science and Technology Beijing
出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)
年 卷 期：2018年第25卷第6期
页 面：591-597页
核心收录：
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]
主 题：laterite ore red mud reduction roasting phase transformation
摘 要：Large scale utilization is still an urgent problem for waste red mud with a high content of alkaline metal component in the *** ores especially the saprolitic laterite ore are one refractory nickel resource,the nickel and iron of which can be effectively recovered by direct reduction and magnetic *** metal salts were usually added to enhance reduction of laterite *** feasibility of co-reduction roasting of a saprolitic laterite ore and red mud was *** show that the red mud addition promoted the reduction of the saprolitic laterite ore and the iron ores in the red mud were co-reduced and *** adding 35wt%red mud,the nickel grade and recovery were 4.90wt%and 95.25wt%,and the corresponding iron grade and total recovery were 71.00wt%and 93.77wt%,*** X-ray diffraction（XRD）,scanning electron microscopy,and energy dispersive spectroscopy（SEM-EDS）analysis results revealed that red mud addition was helpful to increase the liquid phase and ferronickel grain *** chemical compositions＂Ca O and Na_2O＂in the red mud replaced Fe O to react with Si O_2 and Mg Si O_3 to form augite.
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