工程科学学报2016，Vol.38Issue(2)：181-186,6.DOI:10.13374/j.issn2095-9389.2016.02.004
海砂矿深度还原-磁选分离实验研究
Experimental research on the deep reduction--magnetic separation of ironsand
摘要
Abstract
The basic characteristics of ironsand were systematically studied by chemical analysis, scanning electron microscopy and X-ray diffraction. A series of experiments were performed to investigate reduction- magnetic separation for Fe and Ti from iron-sand. The effects of reduction temperature, reduction time, carbon ratio, magnetic density, and grinding fineness on the reduction-magnetic separation process were investigated. It could be found that the ironsand mainly consisted of titanomagnetite and titanohema-tite. The optimal process parameters were obtained as follows: reduction temperature, 1300℃; reduction time, 30 min; C/O molar ratio, 1. 1;magnetic density, 50 mT;and the grinding fineness of -0. 074μm, 86. 34%. Under such conditions, the metallization rate, the iron grade of magnetic substance and the iron recovery reached to 94. 23%, 97. 19% and 90. 28%, respectively, and the titanium grade of non-magnetic substance and the titanium recovery were 57. 94% and 87. 22%, respectively. The effective separation of iron and titanium could be achieved in this reduction-magnetic separation process.关键词
海砂矿/铁矿石还原/磁选分离/精矿铁Key words
ironsand/iron ore reduction/magnetic separation/iron concentrate分类
矿业与冶金引用本文复制引用
刘依然,张建良,王振阳,刘征建,邢相栋..海砂矿深度还原-磁选分离实验研究[J].工程科学学报,2016,38(2):181-186,6.基金项目
国家重点基础研究发展计划资助项目(2012CB720400) （2012CB720400）
