Smelting ntawm silicon hlau

Silicon hlau, tseem hu ua industrial silicon los yog crystalline silicon, feem ntau yog tsim los ntawm carbon txo cov silicon dioxide nyob rau hauv hluav taws xob furnaces. Nws lub ntsiab siv yog raws li ib tug additive rau non-ferrous alloys thiab raws li ib tug pib khoom rau zus tau tej cov semiconductor silicon thiab organosilicon.

Nyob rau hauv Suav teb, silicon hlau feem ntau yog cais raws li cov ntsiab lus ntawm peb lub ntsiab impurities nws muaj: hlau, txhuas thiab calcium. Raws li qhov feem pua ​​​​ntawm cov hlau, txhuas thiab calcium hauv hlau silicon, hlau silicon tuaj yeem muab faib ua 553, 441, 411, 421, 3303, 3305, 2202, 2502, 1501, 1101 thiab lwm qib sib txawv. Thawj thiab thib ob tus lej yog coded rau feem pua ​​​​cov ntsiab lus ntawm hlau thiab txhuas, thiab tus lej thib peb thiab plaub yog cov ntsiab lus ntawm calcium. Piv txwv li, 553 txhais tau hais tias cov ntsiab lus ntawm hlau, txhuas thiab calcium yog 5%, 5%, 3%; 3303 txhais tau tias cov ntsiab lus ntawm hlau, txhuas thiab calcium yog 3%, 3%, 0.3%)

Kev tsim cov hlau silicon yog tsim los ntawm txoj kev carbothermal, uas txhais tau hais tias silica thiab carbonaceous txo tus neeg sawv cev yog smelted nyob rau hauv lub ore cub. Lub purity ntawm silicon ua nyob rau hauv no txoj kev yog 97% mus rau 98%, thiab xws li silicon feem ntau yuav siv tau nyob rau hauv metallurgical lub hom phiaj. Yog tias koj xav kom tau txais qib siab dua ntawm silicon, koj yuav tsum ua kom zoo dua kom tshem tawm cov impurities, thiab tau txais purity ntawm 99.7% mus rau 99.8% ntawm cov hlau silicon.

Smelting silicon hlau nrog quartz xuab zeb raws li raw khoom muaj xws li ob peb kauj ruam ntawm quartz xuab zeb thaiv ua, them nqi npaj thiab ore rauv smelting.

Feem ntau, cov xuab zeb zoo quartz yuav siv ncaj qha rau hauv kev tsim cov khoom lag luam qib siab quartz iav, thiab txawm tias ua tiav rau hauv lub pov haum qib xws li siv lead ua, tourmaline thiab lwm yam khoom. Cov qib qis dua me ntsis, tab sis cov reserves loj dua, cov mining tej yam kev mob me ntsis zoo dua, thiab cov hluav taws xob nyob ib puag ncig yog pheej yig dua, uas yog tsim rau zus tau tej cov silicon hlau.

Tam sim no, Tuam Tshoj txoj kev tsim cov silicon hlau carbon thermal ntau lawm txheej txheem: kev siv silica raws li raw cov ntaub ntawv, roj av coke, charcoal, ntoo chips, tsawg tshauv thee thiab lwm yam txo cov neeg ua hauj, nyob rau hauv lub ore thermal furnace kub smelting, txo silicon hlau. los ntawm silica, uas yog slag dawb submerged arc siab kub yaj txheej txheem.

Yog li ntawd, txawm hais tias silicon hlau yog muab rho tawm los ntawm silica, tsis yog txhua txhua silica yog haum rau ua silicon hlau. Cov xuab zeb zoo tib yam peb pom txhua hnub tsis yog cov khoom siv tiag tiag ntawm silicon hlau, tab sis cov xuab zeb quartz siv nyob rau hauv cov lus hais saum toj no, thiab nws tau dhau los ua ntau kauj ruam los ua kom tiav qhov tawg ntawm cov xuab zeb mus rau silicon hlau.