Zirconia Extraction txheej txheem

Zirconium compound ntau lawm txoj kev tsim zirconium chloride los ntawm alkaline decomposition ntawm zircon mloog zoo los yog hydrolysis ntawm zirconium tetrachloride. Zirconium chloride yog ib qho tseem ceeb nruab nrab cov khoom rau kev npaj ntawm zirconium tebchaw, thiab yuav siv tau raws li ib tug hlau nto kho tus neeg saib xyuas thiab catalyst, uas yog tsuas yog tsim los ntawm alkaline decomposition ntawm zirconium concentrate nyob rau hauv kev lag luam. Tag nrho cov txheej txheem suav nrog alkali decomposition, zirconium chloride tov npaj thiab zirconium chloride crystal nag lossis daus.
Alkali decomposition ntawm zircon concentrate alkali decomposition muaj peb txoj kev, uas yog, sodium hydroxide fusion txoj kev, sodium carbonate sintering txoj kev thiab txiv qaub sintering txoj kev.

Chloride zirconium oxide tov npaj Tom qab zircon decomposed nrog alkali, nws yog ntxuav nrog dej kom tshem tawm silica thiab lwm yam impurities, thiab ces hydrochloric acid yog siv los leach cov dej ntxuav cov khoom los tsim chlorine zirconium oxide tov. Leaching, leaching tov ntawm HCl cov ntsiab lus feem ntau yog tswj nyob rau hauv 2.5 ~ 3.5 mol / L, ZrO2 nyob rau hauv 60 ~ 80g / L hydrochloric acid thiab zirconium nyob rau hauv cov khoom siv ntxuav kom tsim zirconium chloride oxides rau hauv cov tshuaj, thaum mus rau hauv cov tshuaj muaj hlau, titanium thiab lwm yam impurities, thaum silicon yog yug los rau hauv colloidal silicic acid nag lossis daus, cohesion ntawm silicic acid, uas cuam tshuam rau kev pom ntawm cov khoom leached. Siv qhov kub thiab txias leaching thiab ntxiv coagulant txoj kev yog conducive rau cohesion ntawm silicic acid, yooj yim los lim cov ntaub ntawv leach thiab clear steep filtrate. Dissolve zirconium hydroxide nrog hydrochloric acid los yog yaj zirconium tetrachloride hauv dej kuj tuaj yeem tau txais cov tshuaj zirconium chloride.