Qhov sib txawv tseem ceeb ntawm carbothermic thiab metallothermic txo yog qhov txo qis carbothermic, tus neeg sawv cev txo qis yog carbon, whereas, hauv metallothermic txo, tus txo tus neeg sawv cev yog hlau.
Kev txo qis ntawm cov pa roj carbon monoxide thiab txo qis metallothermic yog qhov tseem ceeb heev hauv kev tau txais cov hlau ntshiab. Cov tshuaj tiv thaiv no yog siv feem ntau hauv cov txheej txheem kev lag luam.
Kev txo qis Carbothermic yog dab tsi?
Cov tshuaj tiv thaiv txo qis Carbothermic yog ib hom tshuaj tiv thaiv uas txo cov tshuaj xws li hlau oxide tshwm sim nyob rau hauv muaj cov pa roj carbon. Ntawm no, carbon nyhav los ua tus txo tus neeg sawv cev. Feem ntau, hom tshuaj tiv thaiv no tshwm sim ntawm qhov kub thiab txias heev. Cov kev txo qis carbothermic no tseem ceeb heev hauv kev tsim cov ntaub ntawv ntawm ntau lub ntsiab lus. Peb tuaj yeem yooj yim kwv yees lub peev xwm ntawm cov hlau los koom nrog cov tshuaj tiv thaiv carbothermic siv Ellingham daim duab.
Ellingham daim duab yog ib daim duab uas qhia tau hais tias qhov kub thiab txias ntawm kev ruaj ntseg ntawm cov tebchaw. Feem ntau, qhov kev soj ntsuam no muaj txiaj ntsig zoo hauv kev nce qhov yooj yim ntawm kev txo cov hlau oxides thiab sulfides. Lub npe los ntawm nws qhov kev tshawb pom los ntawm Harold Ellingham xyoo 1944.
Daim duab 01: Daim duab Ellingham
Cov tshuaj txo qis hauv cov pa roj carbon monoxide tuaj yeem tsim cov pa roj carbon monoxide thiab qee zaum carbon dioxide. Peb tuaj yeem piav qhia txog kev hloov pauv ntawm cov reactants rau hauv cov khoom hais txog kev hloov pauv entropy. Hauv cov tshuaj tiv thaiv no, ob qho khoom sib txuas (hlau oxide thiab carbon) hloov mus rau hauv cov khoom siv tshiab (hlau), thiab cov pa roj (carbon monoxide lossis carbon dioxide). Cov tshuaj tiv thaiv tom kawg muaj qhov siab heev.
Muaj ntau daim ntawv thov ntawm kev txo qis carbothermic, suav nrog hlau ore smelting raws li daim ntawv thov loj. Ntawm no, hlau ore yog txo nyob rau hauv lub xub ntiag ntawm carbon raws li tus neeg sawv cev txo. Cov tshuaj tiv thaiv no muab cov hlau hlau thiab carbon dioxide ua cov khoom. Lwm qhov piv txwv tseem ceeb yog cov txheej txheem Leblanc uas sodium sulfate reacts nrog carbon, muab sodium sulfide thiab carbon dioxide.
Metallothermic txo yog dab tsi?
Metallothermic txo cov tshuaj tiv thaiv yog ib hom tshuaj tiv thaiv uas tau ua kom tau lub hom phiaj hlau lossis hlau los ntawm cov khoom noj xws li oxides lossis chlorides los ntawm kev siv hlau los ua tus neeg saib xyuas. Feem ntau ntawm cov hlau reactive yog tau los ntawm qhov kev txo qis no. E.g. titanium hlau.
Ib qho piv txwv ntawm hom tshuaj tiv thaiv no yog kev ua kom huv ntawm niobium hlau. Hauv qhov kev txo qis no, niobium oxide raug txo los ntawm txhuas hlau kom muab niobium hlau thiab txhuas oxide. Nws yog cov tshuaj tiv thaiv exothermic qhov twg oxide impurities slag, thiab peb tuaj yeem tshem tawm ntawm cov hlau niobium molten.
Qhov txawv ntawm Carbothermic thiab Metallothermic txo yog dab tsi?
Kev txo qis ntawm cov pa roj carbon monoxide thiab txo qis metallothermic yog qhov tseem ceeb heev hauv kev tau txais cov hlau ntshiab. Carbothermic txo cov tshuaj tiv thaiv yog ib hom tshuaj tiv thaiv nyob rau hauv uas txo cov khoom xws li hlau oxide tshwm sim nyob rau hauv lub xub ntiag ntawm carbon. Cov tshuaj tiv thaiv metallothermic txo qis, ntawm qhov tod tes, yog ib hom tshuaj tiv thaiv yog ua kom tau lub hom phiaj hlau lossis hlau los ntawm cov khoom noj xws li oxides lossis chlorides los ntawm kev siv hlau los ua tus neeg saib xyuas. Qhov sib txawv tseem ceeb ntawm carbothermic thiab metallothermic txo yog tias hauv kev txo qis carbothermic tus neeg sawv cev txo qis yog carbon whereas hauv metallothermic txo tus neeg sawv cev txo yog hlau.
Hauv qab infographic qhia txog qhov sib txawv ntawm carbothermic thiab metallothermic txo nyob rau hauv daim ntawv tabular.
Summary – Carbothermic vs Metallothermic Txo
Kev txo qis thiab txo cov hlau ua kom sov yog qhov tseem ceeb heev hauv kev tau txais cov hlau ntshiab. Qhov sib txawv tseem ceeb ntawm carbothermic thiab metallothermic txo yog tias hauv kev txo qis carbothermic, tus neeg sawv cev txo qis yog carbon, whereas, hauv metallothermic txo, tus txo tus neeg sawv cev yog hlau.
