CAJ | 학술논문

云南某铁矿老尾矿中含铁28．28％，主要以褐铁矿和赤铁矿形式存在，嵌布粒度较细，且部分褐铁矿和赤铁矿是以碎屑的形式存在，被铁浸染的白云石和方解石等碳酸盐矿物充填在碎屑之间，极易影响铁品位。为了回收该老尾矿中的铁，在大量试验基础上，最终确定了“强磁粗选-中矿细磨-强磁分离”的选铁工艺流程，获得了铁品位为62．52％，铁回收率为39．42％的铁精矿1和铁品位为58．95％，铁回收率为17．49％的铁精矿2，总铁回收率为56．91％，较好的实现了该老尾矿中铁的选矿回收利用。
운남모철광로미광중함철28．28％，주요이갈철광화적철광형식존재，감포립도교세，차부분갈철광화적철광시이쇄설적형식존재，피철침염적백운석화방해석등탄산염광물충전재쇄설지간，겁역영향철품위。위료회수해로미광중적철，재대량시험기출상，최종학정료“강자조선-중광세마-강자분리”적선철공예류정，획득료철품위위62．52％，철회수솔위39．42％적철정광1화철품위위58．95％，철회수솔위17．49％적철정광2，총철회수솔위56．91％，교호적실현료해로미광중철적선광회수이용。
An old tailings in Yunnan province contains 28 .28% Fe ,and hematite and limonite are the major iron minerals .Since the hematite and limonite grains are finely disseminated and some fill in or replace the holes of dolomite ,calcite and other carbonates in the forms of fragment ,it is hard to obtain qualified iron products .To recover the iron minerals ,based on a large amount of tests ,a process of “high intensity magnetic roughing- regrinding - high intensity magnetic cleaning” has been introduced .The result shows that an iron concentrate 1 assaying 62 .52% Fe with a recovery of 39 .42% and an iron concentrates 2 assaying 58 .95% Fe with a recovery of 17 .49% could be obtained ,respectively ,and the total recovery of iron could reach 56 .91% ,which indicates a satisfying industrial production process .