Txoj kev los nag kuj hu ua txoj kev ntub, thiab cov khoom siv tseem ceeb yog cov xuab zeb quartz, cov tshauv dej qab zib, cov kua qaub hydrochloric acid lossis sulfuric acid lossis nitric acid lossis carbon dioxide. Txoj kev ua haujlwm feem ntau yog: thawj zaug siv roj roj lossis cov thee zoo ntawm qhov kub siab ntawm cov tshuaj tiv thaiv ntawm cov xuab zeb quartz thiab cov tshauv dej qab zib los tsim cov iav dej lag luam, cov iav dej lag luam tau npaj rau hauv qee qhov concentration ntawm cov kua dilute, thiab tom qab ntawd nyob rau hauv qee qhov xwm txheej kom ntxiv qee cov kua qaub, kom cov silica precipitate tawm, thiab tom qab ntawd tom qab ntxuav, lim, ziab (qhuav lossis txau), sib tsoo, los tsim cov khoom dawb carbon dub. Txoj kev los nag yog muab faib ua cov kua qaub, cov kua qaub, cov kua carbonization thiab ntau txoj kev sib txawv.

(1) Txoj kev ua kua qaub

Feem ntau, txoj kev ua kua qaub yog ua kom cov kua qaub uas yaj tau thiab sulfuric acid (lossis lwm yam kua qaub), thaum cov kua qaub ua haujlwm mus txog qee yam nqi, nres cov kua qaub ua haujlwm, laus zuj zus, thiab tom qab ntawd lim thiab ntxuav nrog dej ntau zaus, tshem tawm Na2S04, xa kom qhuav, zom kom tau cov khoom.

(2) Txoj kev Sol

Qhov no suav hais tias yog txoj kev ua haujlwm zoo dua, tab sis cov txheej txheem nyuaj dua li txoj kev kua qaub, thiab cov kev cai tswj hwm qhov xwm txheej siab dua. Ua ntej, hydrochloric acid thiab sodium silicate teb los tsim qee qhov concentration ntawm dilute sol, nyob rau hauv qhov xwm txheej ntawm me ntsis cua sov thiab do, cov tshuaj dilute ntawm sodium silicate yog ntxiv rau cov sol npaj, thiab ib qho ntawm NaC1 daws yog ntxiv rau cov tshuaj pH = 7 ~ 8, thiab tus nqi H yog khaws cia nrog alkaline regulator, kev khaws cia kub thiab kev laus, thiab tom qab ntawd yaug kom tshem tawm chlorine, thiab tom qab ntawd lim, ziab thiab ntim.

(3) Txoj kev ua kom cov pa roj carbon

Hauv txoj kev no, cov pa roj carbon dioxide yog carbonized los ntawm cov kua silicate soluble los tsim cov Si02 precipitated thiab sodium carbonate. Tom qab cov tshuaj tiv thaiv tiav lawm, cov khoom raug lim ua ntej, thiab Na2C03 raug tshem tawm los ntawm cov kua qaub aqueous, thiab tom qab ntawd lim, ziab, tsoo thiab ntim.