文档介绍：第 42 卷第 3 期
2011 年 3 月

中南大学学报(自然科学版)
Journal of Central South University (Science and Technology)

Mar. 2011
某高磷铁矿提铁降磷研究
朱德庆,春铁军,潘建,危雪梅
(中南大学资源加工与生物工程学院,湖南长沙,410083)
摘要:以湖南某地高磷铁矿为原料,采用还原焙烧−磁选−硫酸浸出工艺进行提铁降磷试验研究。对还原焙烧−磁
选粗精矿进行硫酸浸出工艺参数优化,对浸出时间、液固比、硫酸用量和搅拌速度等因素对提铁降磷效果的影响
进行研究。研究结果表明:对原矿品位为 % Fe(质量分数)和磷含量为 %的高磷铁矿石经过还原焙烧−磁
选得到的粗精矿,在浸出时间为 2 h、液固比为、硫酸用量为 50 kg/t 和搅拌速度为 500 r/min 的条件下进行酸
性浸出提铁降磷,最终得到铁精矿品位达 % Fe,磷含量为 %,铁总回收率为 %和脱磷率为 %。
关键词:高磷铁矿;还原焙烧;磁选;酸性浸出
中图分类号:TD92
文献标志码:A
文章编号:1672−7207(2011)03−0568−06
Upgrading iron and removing phosphorus from
high-phosphorus iron ore
ZHU De-qing, CHUN Tie-jun, PAN Jian, WEI Xue-mei
(School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China)
Abstract: The reduction roasting-ic separation- sulfuric acid leaching of high-phosphorus iron ores was studied.
The process parameters of acid leaching were optimized with rougher iron ore concentrate obtained by reduction
roasting-ic separation of ROM (run of mine) ores. The effects of various factors on upgrading iron and
dephosphorization were discussed in acid leaching. The result shows that the iron ore concentrate, assaying % iron
and % phosphorus content are achieved at the overall iron recovery of % and dephosphorization of %
under the conditions of leaching for 2 h,