yog hlau ntshiab los yog impure?

Nyob rau hauv txoj kev xav, cov hlau ntshiab yog hais txog ib yam khoom tsim los ntawm cov hlau (Fe), tsis muaj lwm yam impurities lossis cov tebchaw. Txawm li cas los xij, hauv kev tsim khoom tiag tiag, nws yog qhov nyuaj kom tau txais 100% cov hlau ntshiab vim muaj ntau yam txuj ci thiab kev lag luam. Hlau tsim nyob rau hauv kev lag luam feem ntau muaj qee yam ntawm impurities, xws li carbon, silicon, manganese, phosphorus, sulfur, thiab lwm yam. Cov ntsiab lus ntawm cov impurities no nyob ntawm txoj kev tsim khoom thiab cov khoom siv raw zoo.
Yog li ntawd, yog hais tias qhov teeb meem yog hais txog cov hlau uas tsim nyob rau hauv kev lag luam, nws yog feem ntau impure thiab muaj ib co ntawm cov impurities. Txawm li cas los xij, yog tias qhov teeb meem hais txog cov qauv hlau purity siab uas tau txais kev kho tshwj xeeb purification, lawv yuav yog cov ntshiab, txawm hais tias lawv tseem yuav muaj cov kab tsis huv.
Hauv kev tshawb fawb txog kev tshawb fawb thiab qee yam kev siv tshwj xeeb, cov qauv hlau purity siab yuav tsum tau, uas tuaj yeem tau txais los ntawm txoj kev purification tshwj xeeb. Cov purification txoj kev no yuav muaj xws li cov tswv yim xws li electrolytic refining, lub regional melting, thiab vapor deposition kom tshem tawm impurities ntawm hlau thiab txhim kho nws purity.