某风化低品位石煤钒矿超导磁选预富集试验研究  

Application of Superconducting Magnetic Separation in Pre-enrichment of Weathered Low-Grade Vanadium-Bearing Stone Coal Ore

作　　者：张帅 袁致涛[1] 林子钦 谢雨欣 卢冀伟[1] 顾建涛 ZHANG Shuai;YUAN Zhitao;LIN Ziqin;XIE Yuxin;LU Jiwei;GU Jiantao(School of Resources and Civil Engineering,Northeastern University,Shenyang 110819,Liaoning,China)

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110819

出　　处：《矿冶工程》2024年第5期46-50,共5页Mining and Metallurgical Engineering

基　　金：国家自然科学基金(51704057);中央高校基本业务科研项目(N2201010)。

摘　　要：针对某风化低品位石煤钒矿品位低、直接提钒工艺复杂且成本高的难题,开展选矿预富集试验研究。工艺矿物学研究结果表明,该石煤中钒主要赋存在含钒褐铁矿和含钒云母中,以上2种矿物均具有微弱磁性,可采用超导磁选-沉降工艺预富集钒。在磁场强度4 T、矿浆流速8.0 L/min条件下,获得了V_(2)O_(5)品位1.44%、回收率55.08%的超导磁选预富集精矿,超导磁选尾矿可通过沉降分级进一步回收钒,最终可获得V_(2)O_(5)品位1.03%、回收率79.48%、抛尾率高达59.02%的综合精矿,实现对该石煤中钒的高效富集,满足了后续冶金法提钒的要求。An experimental research was performed on pre-enrichment of a weathered low-grade vanadium-bearing stone coal ore to solve the problems of complex flow and high cost for the existing direct vanadium-extraction process.The process mineralogy study shows that the predominant vanadium minerals in the stone coal ore are vanadium-bearing limonite and vanadium-bearing mica,both being weakly magnetic,and a superconducting magnetic separation(SMS)plus sedimentation process is proposed for pre-enrichment of vanadium.With magnetic field strength of 4 T and slurry flow rate of 8.0 L/min,SMS produced a pre-enriched concentrate with V_(2)O_(5) grade of 1.44%at a recovery of 55.08%.The SMS tailings were then subjected to sedimentation and classification to further recover vanadium,leading to the final concentrate with V_(2)O_(5) grade of 1.03%and recovery of 79.48%,presenting that 59.02%tailings were discarded.With this pre-enrichment process,vanadium in the stone coal ore can be efficiently reclaimed,which meets the requirements for subsequent metallurgical vanadium extraction.

关 键 词：石煤钒矿 超导磁选 预富集 钒 

分 类 号：TD921[矿业工程—选矿]