江西某赤铁矿选矿试验研究

江西某赤铁矿是一种嵌布粒度极细、分布极其均匀,十分难选的胶体赤铁矿.采用高梯度脉动磁选机,原矿经过三次磨矿三次选别,其精矿品位仅能达到57%左右,回收率不足10%.采用摇床重选品位只能从49%提高到50%,基本上起不到富集作用.通过采用磁化焙烧-磁选工艺,才从根本上解决了选矿回收难题.

Beneficiation test using hematite from a mine in Jiangxi province

The colloidal hematite from Jiangxi province is featured by very fine dissemination size,very even size distribution and very great difficulty of beneficiation.As high intensity pulse type magnetic separator and 3 stages of ore grinding & separating are adopted,the grade of concentrates reaches nothing more than 57% with a recovery less than 10%.When gravity separation through shaking table is added,the grade will just rise from 49% to 50% that is not a mentionable enrichment.Finally,the technology of magne...