Study on Iron Extraction from High Iron Bauxite Residue by Pyrite Reduction

被引：4
|
作者：
Fu, HuiJun [1 ,2 ]
Lv, GuoZhi [1 ,2 ]
Zhang, Ting-An [1 ,2 ]
Chao, Xi [1 ,2 ]
Chen, Yang [1 ,2 ]
机构：
[1] Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
[2] Northeastern Univ, Key Lab Ecol Met Multimet Intergrown Ores, Minist Educ, Special Met & Proc Engn Inst,Sch Met, Shenyang 110819, Peoples R China
来源：
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY | 2022年 / 109卷 / 01期
基金：
中国国家自然科学基金;
关键词：
High iron bauxite residue; Pyrite; Reduction and magnetic separation; Iron extraction; RED-MUD; COMPREHENSIVE UTILIZATION; REMOVAL;
D O I：
10.1007/s00128-022-03520-8
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A new method of solid-phase reduction magnetic separation with pyrite as a reducing agent was proposed in order to realize resource utilization of high iron bauxite residue while reducing environmental harm. FeS2 powder and high iron bauxite residue powder were uniformly blended and roasted in a closed environment. A magnetic separator was utilized to separate the magnetic iron concentrate at 2400 GS, and the recovery rates were calculated. Experimental results show that the best iron recovery was 91.5% at 1:6 roasted bauxite: residue at 800celcius for 2 h. The recovery of Fe can be improved by reducing high iron bauxite residue with pyrite, and iron in both pyrite and high iron bauxite residue can be recovered simultaneously, alleviating the pressure of iron ore resources and improving its utilization value.
引用
收藏
页码：149 / 154
页数：6
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