Lithium Carbonate thiab Lithium Hydroxide yog ob qho tib si raw khoom rau roj teeb, thiab tus nqi ntawm lithium carbonate yeej ib txwm pheej yig dua li lithium hydroxide. Qhov txawv ntawm ob yam khoom no yog dab tsi?
Ua ntej, hauv cov txheej txheem ntau lawm, ob qho tib si tuaj yeem rho tawm los ntawm lithium pyroxase, qhov sib txawv ntawm tus nqi tsis loj heev. Txawm li cas los xij, yog tias ob qho tib si hloov mus rau ib leeg, tus nqi ntxiv thiab cov khoom siv yuav tsum tau ua, yuav tsis muaj kev ua tau zoo ntawm tus nqi.
Lithium carbonate feem ntau yog tsim los ntawm txoj kev sulfuric acid acid, uas tau txais los ntawm kev sib xyaw ntawm sulfuric acid thiab lithium pyroxase, thiab sodium carbonate ntxiv rau hauv cov kua lithium sulfate, thiab tom qab ntawd precipitated thiab ziab kom npaj lithium carbonate;
Kev npaj cov lithium hydroxide feem ntau yog siv txoj kev alkali, uas yog, ci lithium pyroxene thiab calcium hydroxide. Lwm tus siv txoj kev hu ua sodium carbonate pressurization, uas yog, ua cov kua lithium uas muaj lithium, thiab tom qab ntawd ntxiv txiv qaub rau hauv cov kua kom npaj cov lithium hydroxide.
Zuag qhia tag nrho, lithium pyroxene siv tau los npaj ob qho tib si lithium carbonate thiab lithium hydroxide, tab sis txoj kev ua haujlwm txawv, cov khoom siv tsis tuaj yeem sib koom, thiab tsis muaj qhov sib txawv ntawm tus nqi. Tsis tas li ntawd, tus nqi ntawm kev npaj lithium hydroxide nrog ntsev pas dej brine yog siab dua li kev npaj lithium carbonate.
Qhov thib ob, ib feem ntawm daim ntawv thov, cov roj teeb nickel siab ternary yuav siv lithium hydroxide. NCA thiab NCM811 yuav siv cov roj teeb lithium hydroxide, thaum NCM622 thiab NCM523 tuaj yeem siv ob qho tib si lithium hydroxide thiab lithium carbonate. Kev npaj cov khoom lithium hlau phosphate (LFP) thermal kuj xav tau kev siv lithium hydroxide. Feem ntau, cov khoom ua los ntawm lithium hydroxide feem ntau ua haujlwm zoo dua.