矿产综合利用2024，Vol.45Issue(2)：157-164,8.DOI:10.3969/j.issn.1000-6532.2024.02.026
铁尾矿中磷灰石旋转摩擦静电分选提纯
Apatite Enrichment from Iron Ore Tailings by Rotary Triboelectrostatic Separator
摘要
Abstract
This is an article in the field of mineral processing engineering.Many iron ore tailings in China contain precious phosphorite resources,such as apatite,but there is a lack of economic and effective separation methods to separate and utilize them.The rotary triboelectric separation(RTS)technique has the advantages of low environmental pollution and energy consumption without the usage of water and reagents.This paper emphatically investigated the effect of different friction materials including copper,stainless steel,aluminum and PVC(polyvinyl chloride)on the charging characteristics of pure minerals of apatite,quartz,or thoclase and ilmenite which were the main components of iron ore tailings.The variation of apatite separation and enrichment performance in Shenjia iron tailings with the primary rotary triboelectrostatic separation parameters was studied and the optimum conditions were determined.It was concluded that apatite rubbed with PVC showed the greatest difference in the charge-mass ratio with other minerals.In the actual subsequent tests of apatite from iron ore tailings,a reasonably good separation performance with an apatite concentrate of 27.6％P2O5 grade at 49.3％P2O5 recovery was obtained under the conditions of rotary charger rotation speed 5000 r/min,feed rate 50 g/min,co-flow airvelocity 0.5 m/s,feed flow air velocity 0.6 m/s,accomplishing the effective separation and purification of apatite in iron tailings.关键词
矿物加工工程/摩擦荷电/磷灰石/静电分选/铁矿尾矿Key words
Mineral processing engineering/Friction charging/Apatite/Electrostatic separation/Iron ore tailings分类
矿业与冶金引用本文复制引用
张龙宇,吴中贤,申有悦,陶东平..铁尾矿中磷灰石旋转摩擦静电分选提纯[J].矿产综合利用,2024,45(2):157-164,8.基金项目
国家自然科学基金(51804188) （51804188）
