Dab tsi yog cryolite hauv Aluminium?
Dab tsi yog cryolite hauv Aluminium?

Video: Dab tsi yog cryolite hauv Aluminium?

Video: Dab tsi yog cryolite hauv Aluminium?
Video: karaoke ca mej pheej tog ua dlaab tsi ntxawm yaj 2024, Kaum ib hlis
Anonim

Es tsis txhob, nws yog yaj nyob rau hauv molten cryolite -ib txhuas compound nrog qis melting point tshaj txhuas oxide. Kev siv molten cryolite raws li cov kuab tshuaj txo qee cov nqi hluav taws xob koom nrog hauv kev rho tawm txhuas los ntawm kev tso cai ions hauv txhuas oxide kom txav tau yooj yim ntawm qhov kub thiab txias.

Hauv qhov no, puas yog cryolite ore ntawm Aluminium?

Aluminium oxide (qee zaum hu ua alumina) yog tsim los ntawm cua sov txhuas hydroxide rau qhov kub ntawm li 1100 - 1200 ° C. Cov txhuas oxide yog electrolysed nyob rau hauv cov kua hauv molten cryolite , Na3AlF6. Cryolite yog lwm tus aluminium ore , tab sis yog tsawg thiab kim, thiab feem ntau yog tam sim no ua tshuaj.

Ib yam li ntawd, dab tsi yog qhov sib xyaw cryolite siv rau hauv electrolysis ntawm txhuas? Aluminium oxide, txawm li cas los xij, muaj lub siab melting point. Yog li ntawd, txhuas oxide yog yaj nyob rau hauv molten cryolite . Cryolite yog ib daim ntawv ntawm ib aluminium compound uas muaj qhov qis melting point uas txhuas oxide. Steel Case, siv hauv electrolysis , yog coated los ntawm graphite.

Qhov thib ob, cryolite yog dab tsi?

Cryolite , tsis muaj xim rau dawb halide ntxhia, sodium aluminium fluoride (Na3AlF6). Nws tshwm sim hauv qhov tso nyiaj loj ntawm Ivigtut, Greenland, thiab me me hauv Spain, Colorado, Asmeskas, thiab lwm qhov.

Yuav ua li cas mus ua aluminium?

Aluminium yog tsim nyob rau hauv ob theem: Bayer txheej txheem ntawm refining cov bauxite ore kom tau txhuas oxide, thiab Hall-Heroult txheej txheem ntawm smelting lub txhuas oxide tso tawm ntshiab txhuas . ntawm txhuas . Cov hmoov txhuv nplej siab, txiv qaub, thiab sodium sulphide yog qee qhov piv txwv.

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