Improvement of carbothermic reduction of nickel slag by addition of CaCO3

被引：19

作者：

Li, Xiao-ming ^{[1
,2
]}

Wen, Zhen-yu ^{[1
]}

Li, Yi ^{[1
]}

Yang, Hai-bo ^{[1
]}

Xing, Xiang-dong ^{[1
,2
]}

机构：

[1] Xian Univ Architecture & Technol, Sch Met Engn, Xian 710055, Shaanxi, Peoples R China

[2] Xian Univ Architecture & Technol, Shaanxi Engn Res Ctr Met, Xian 710055, Shaanxi, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2019年 / 29卷 / 12期

基金：

中国国家自然科学基金;

关键词：

nickel slag; fayalite; carbothermic reduction; CaCO3; VISCOSITY; ORE; PHOSPHORUS;

D O I：

10.1016/S1003-6326(19)65172-1

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The effect of CaCO3 addition on the carbothermic reduction of nickel slag was studied, and the mechanism of CaCO3 in improving the reduction was analyzed. The results showed that when the CaCO3 content added to the slag was increased from 0 to 8 wt.%, initiation temperature of the carbothermic reaction decreased from 1100 to 1000 degrees C, the temperature reaching the maximum reduction rate decreased from 1150 to 1100 degrees C, and the reduction degree of the nickel slag increased from 58% to 88%. The iron particles in the reduced nickel slag were coarsened and the X-ray diffraction intensity of metallic iron peaks increased, confirming that the addition of CaCO3 was beneficial to the reduction of nickel slag and recovery of iron.

引用

页码：2658 / 2666

页数：9

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