Cov khoom siv raw hauv peb txoj kev lag luam niaj hnub hu ua aluminium ingot. Raws li lub teb chaws tus qauv (GB / T 1196-2008), nws yuav tsum hu ua "aluminium ingot rau remelting", tab sis txhua leej txhua tus yog siv los hu nws "aluminium ingot". Nws yog tsim los ntawm electrolysis los ntawm txhuas oxide-cryolite. Tom qab aluminium ingots nkag rau hauv daim ntawv thov kev lag luam, muaj ob pawg loj: cam khwb cia aluminium alloys thiab deformed aluminium alloys. Casting aluminium thiab aluminium alloys yog txhuas castings uas tsim los ntawm txoj kev casting; deformed aluminium thiab aluminium alloys yog txhuas ua cov khoom tsim los ntawm kev ua haujlwm siab: daim hlau, strips, foils, raj, rods, pwm, xov hlau thiab forgings.
Raws li lub teb chaws tus qauv "Aluminium ingots rau remelting yog muab faib ua 8 qib raws li lawv cov tshuaj muaj pes tsawg leeg, namely Al99.90, Al99.85, Al99.70, Al99.60, Al99.50, Al99.00, Al99.7E, thiab Al99. 6E" (Ceeb Toom: Tus lej tom qab Al yog cov ntsiab lus txhuas). Dab tsi qee cov neeg hu ua "A00" aluminium yog qhov tseeb txhuas nrog purity ntawm 99.7%. Nws yog hu ua "standard aluminium" nyob rau hauv lub khw London. Txhua leej txhua tus paub tias peb lub teb chaws cov qauv kev lag luam hauv xyoo 1950 tuaj ntawm lub qub Soviet Union. "A00" yog lub npe Lavxias teb sab hom nyob rau hauv Soviet lub teb chaws tus qauv. "A" yog tsab ntawv Lavxias, tsis yog lus Askiv "A" lossis tsab ntawv Suav pinyin. Yog tias "A" ua raws li cov qauv thoob ntiaj teb, nws yog qhov tseeb dua los hu nws "tus qauv txhuas". Standard aluminium yog ib qho txhuas ingot uas muaj 99.7% txhuas, thiab nws tau sau npe rau hauv khw London.
Electrolytic aluminium yog txhuas tau los ntawm electrolysis. Niaj hnub nimno electrolytic aluminium industrial ntau lawm siv cryolite-alumina molten ntsev electrolysis txoj kev. Molten cryolite yog cov kuab tshuaj, txhuas oxide yog cov kuab tshuaj, cov pa roj carbon lub cev yog cov anode, thiab cov kua txhuas txhuas yog cov cathode. Tom qab dhau los ntawm lub zog ncaj qha tam sim no, cov tshuaj tiv thaiv electrochemical yog nqa tawm ntawm ob tug ncej hauv electrolytic cell ntawm 950 degree -970 degree . Ob leeg electrolysis.