摘要
为了直接利用白云鄂博原矿冶炼钢提供低P的铁精矿,并同时回收其他有价元素。针对含P 1.05%,含Nb 0.19%的原矿进行了反浮选-弱磁选试验,采用油酸钠为捕收剂,在碱性条件下去除大部分磷灰石和稀土矿物,再对反浮选尾矿经弱磁选得到了含P 0.046%品位为68%的低P铁精矿,Fe回收率达80%;从磁选尾矿可回收回收率44.06%品位0.65%的Nb矿。同时从反浮选产品回收相当原矿91.15%,品位12%的稀土矿物。因此本实验提供了一种获得低磷铁精矿,并部分回收稀土、Nb的新工艺。
A new procedure was tested for the purpose to obtain dephosphorized concentrate of iron minerals from Bayan Obo ores for smelting steel,while partially recovering the rare earth elements and niobium in the deposit.For the ores containing 1. 05% P,0. 19% Nb_2O_5,the procedure used reverse flotation to remove phosphorite and rare earth minerals with sodium oleate as the collector in basic solutions. Iron concentrate was obtained from the tailing of reverse flotation by weak magnetic separation,the final concentrate contained 0. 46% P and 68% Fe with a recovery rate of 80%; Nb minerals of 0. 65% grade were recovered from the tailing of magnetic separation with 44. 04% recovery. RE minerals of Grade of 12% were recovered from the products of reverse flotation with a recovery rate 90% relative to the original ores. Thus,this experiment provided a useful procedure for obtaining dephosphorized iron concentrate and meanwhile partially recovering of RE and Nb minerals from Bayan Obo deposit.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2016年第4期486-493,共8页
Journal of the Chinese Society of Rare Earths
基金
内蒙古自治区科技重大专项
内蒙古自治区研究生教育创新计划资助项目(B20151012702)资助
关键词
白云鄂博矿
脱磷
富集铌
回收稀土
反浮选
Bayan Obo Ores
dephosphorization
niobium enrichment
rare earth elements
reverse flotation
