CAJ | 학술논문

采用化学分析、显微镜和MLA矿物自动检测技术等手段，对某海滨砂矿重选毛砂进行工艺矿物学研究．结果表明：该毛砂中有价矿物种类多，包括钛铁矿、金红石、锆石、独居石、钛赤铁矿和磁铁矿等；自然粒度范围较窄，各主要回收矿物的粒度大小相近，主要集中在0．04～0．125 m m之间；金红石、锆石、独居石均具良好的可分离性，钛铁矿和钛赤铁矿矿物量之比约为6．5∶1，二者磁性、密度及表面性质十分相近，需采用还原焙烧法将钛赤铁矿还原为具强磁性的磁铁矿，而钛铁矿无变化，再采用弱磁分选．
채용화학분석、현미경화MLA광물자동검측기술등수단，대모해빈사광중선모사진행공예광물학연구．결과표명：해모사중유개광물충류다，포괄태철광、금홍석、고석、독거석、태적철광화자철광등；자연립도범위교착，각주요회수광물적립도대소상근，주요집중재0．04～0．125 m m지간；금홍석、고석、독거석균구량호적가분리성，태철광화태적철광광물량지비약위6．5∶1，이자자성、밀도급표면성질십분상근，수채용환원배소법장태적철광환원위구강자성적자철광，이태철광무변화，재채용약자분선．
Process mineralogy of gross sand from beach placer was investigated by chemical analysis ,micro‐scope ,and MLA mineral automatic detection technology .The results indicate that various kinds of valua‐ble elements exist in the gross sand ,including ilmenite ,rutile ,zircon ,monazite ,Ti‐hematite ,magnetite , and so on .The natural particle size range of the gross sand is narrow ,and all of the main recyclable miner‐als have similar dissemination size mainly ranging from 0 .04mm to 0 .125mm .The rutile ,zircon and mona‐zite in the placer have good detachability .Ilmenite and Ti‐hematite ,at a mineral content ratio of 6 .5∶1 , have similar magnetism ,density ,and surface properties .We suggest reverting Ti‐hematite to ferromag‐netic magnetite through roast reduction process ,with no change to ilmenite ,and then separating them at low‐intensity magnetic field .