Effect of nonmetallic additives on iron grain grindability

被引：11

作者：

Hu, Wen-tao ^{[1
]}

Wang, Hua-jun ^{[1
]}

Liu, Xin-wei ^{[1
]}

Sun, Chuan-yao ^{[2
]}

机构：

[1] Univ Sci & Technol Beijing, State Key Lab High Efficient Min & Safety Met Min, Minist Educ, Beijing 100083, Peoples R China

[2] Beijing Gen Res Inst Min & Met, State Key Lab Mineral Proc Sci & Technol, Beijing 100070, Peoples R China

来源：

INTERNATIONAL JOURNAL OF MINERAL PROCESSING | 2014年 / 130卷

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Ferric bauxite; Grindability; Direct reduction;

D O I：

10.1016/j.minpro.2014.05.010

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This paper investigates the effects of nonmetallic additives on the grindability of iron grains using SEM-EDS and XRD. With different kinds of nonmetallic additives added to direct reduction systems, significant differences were noted in terms of particle size, morphology, and the relationship with slag of iron grains. With the addition of CaO + Na2CO3, CaCO3 + Na2CO3 or without an additive, high iron grain grindability cannot be achieved. However, when Na2CO3 is used, iron grindability is improved. Under optimal conditions, the grade of iron powder is 95.6%, and the recovery is 90.2%. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：108 / 113

页数：6

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