1) Cov yam ntxwv ntawm Chromium Oxide Green.
Chrome oxide ntsuab, Hexagonal siv lead ua tsev neeg los yog amorphous tsaus ntsuab hmoov, nrog rau xim hlau luster. Feem ntau muaj ob qhov ntxoov ntxoo: lub teeb txiv ntseej ntsuab thiab tob txiv ntseej ntsuab, nrog cov xim hlau. Tus txheeb ze ceev 5.21, melting point 2266 degree, boiling point 4000 degree. Nws muaj peev xwm tiv taus qhov kub thiab txias ntawm 1000 degree tsis muaj xim, thiab muaj cov kua qaub thiab alkali zoo heev. Cov khoom muaj purity siab, me me particle loj, uniform tis, thiab tsis tshua muaj crystals nyuaj. Kev ruaj khov heev, txawm tias thaum cov pa roj hydrogen tau qhia hauv qab kub kub, tsis muaj kev hloov pauv. Soluble nyob rau hauv rhuab Potassium bromate tov, me ntsis soluble nyob rau hauv acids thiab bases, yuav luag insoluble nyob rau hauv dej, ethanol thiab acetone.
2) Daim ntawv thov ntawm Chromium Oxide Green Powder.
Chromium oxide ntsuab yog tsuas yog siv rau tshwj xeeb steel smelting tapping qhov, zawv zawg phaj qhib, thiab loj incinerators. Nws tuaj yeem siv rau xim ceramics thiab enamels, xim roj hmab, npaj cov txheej txheem kub-resistant, xim xim, thiab luam ntawv number case rau daim ntawv txiaj thiab kev nyab xeeb.
Cov xim ntawm chromium oxide ntsuab zoo ib yam li cov nroj tsuag chlorophyll thiab tuaj yeem siv los ua camouflage xim, ua rau nws nyuaj rau qhov txawv ntawm kev yees duab infrared.
Nws kuj yog siv dav hauv metallurgy, ua cov ntaub ntawv refractory, thiab sib tsoo hmoov.
Nws kuj tseem siv tau los ua cov khoom siv rau cov organic synthesis thiab yog cov xim ntsuab zoo, siv rau hauv cov teb xws li ntsuab hauv pem teb, iav ntsuab, thiab cov xim cement.
3) Chromium oxide yog siv los ua cov xim thiab hu ua chromium oxide ntsuab.
Muaj ntau txoj kev npaj, tab sis feem ntau muaj peb txoj kev siv ntau: kev npaj chromium oxide los ntawm chromium oxide, thermal decomposition txoj kev ammonium sulfate sodium alum, thiab ncaj qha thermal decomposition txoj kev ntawm chromic anhydride.
3.1) Ammonium sulfate ton - sodium alum thermal decomposition txoj kev
Txoj kev no yog txoj hauv kev tsim cov chromium oxide nyob rau hauv cov teb chaws xws li Tebchaws Meskas, Tebchaws Askiv, thiab Lub Tebchaws Yelemees, thiab tau dhau los ua txoj kev tsim khoom nrog cov khoom siv ntau tshaj plaws, zoo tshaj plaws, thiab ntau hom chromium oxide nyob rau txawv teb chaws. Nws qhov zoo yog tias cov txheej txheem ntau lawm yog yooj yim dua li ntawm cov kua theem txo txoj kev, tus nqi qis dua li ntawm chromic anhydride decomposition txoj kev, adaptability yog dav (nws muaj peev xwm tsim pigments, abrasives, refractories thiab metallurgical chromium oxide), nws yog tsim rau loj-scale ntau lawm nyob rau hauv teb kiln, thiab yeej tsis muaj teeb meem roj nyob rau hauv cov txheej txheem ntau lawm. Yog li ntawd, nws hloov cov txheej txheem thermal decomposition thaum ntxov ntawm sodium alum thiab ammonium chloride. Yuav luag tag nrho cov lag luam chromium oxide yog ncaj qha los yog tsis ncaj qha los ntawm sodium alum, thiab nws cov nyiaj ntau lawm rau kwv yees li 20% ntawm kev noj sodium alum.
Tag nrho cov peev txheej ntawm chromium oxide nyob rau hauv ntau lub teb chaws thoob ntiaj teb yog kwv yees li 100,{1}} tons hauv ib xyoos.
3.2) Direct thermal decomposition txoj kev ntawm chromic anhydride.
Chromic anhydride thermal decomposition method: Chromic anhydride yog thermally decomposed ntawm 900 degree nyob rau hauv qhov kub thiab txias, me ntsis txias ua ntej yuav crushed kom tau cov khoom tiav. Nyob rau hauv xyoo tas los no, txoj kev loj hlob ntawm chromic oxide tsim los ntawm txoj kev no hauv Suav teb tau nrawm heev. Xyoo 1999, cov zis ntawm chromic oxide tsim los ntawm chromic anhydride yog kwv yees li 13000 tons, uas yog ob zaug nyuaj li cov txheej txheem thermal decomposition ntawm chromic anhydride ntawm metallurgical qib chromic oxide tsim los ntawm Sodium chromate txo hauv Tietai Gold Cog. Raws li qhov kub thiab txias, chromic anhydride yuav decompose rau hauv plaub hom chromium oxides. Raws li chromic anhydride melts ntawm txog 200 degree thiab pib decompose, oxygen thiab chromic oxide yuav precipitated, yog li thaum kub nce, Chromium oxide crystals tuaj yeem maj mam tsim thiab loj hlob hauv chromic anhydride yaj. Txoj kev no muaj tsawg dua Crystallographic teeb meem, tuaj yeem tswj tau ntau yam khoom zoo ntawm chromium oxide ib leeg siv lead ua, thiab muaj cov khoom zoo, yog li nws tau siv dav. Kev tshawb fawb tau pom tias Cr2O3 twb tau tsim thaum kub nce mus txog 470 degree, thiab tau hloov tag nrho rau Cr2O3 los ntawm 550V. Txawm li cas los xij, thaum lub sij hawm sim, nws tau pom tias qhov tseeb decomposition kub siab tshaj qhov kub no. Yog vim li cas yog vim li cas thaum lub sij hawm decomposition ntawm Cr2O3, Cr2O3 nyias zaj duab xis yog tsim los coated nto ntawm unconverted chromium oxide, thaum lub melting point ntawm Cr2O3 yog siab heev (2266 ± 25) degree, thiab cov tsis zoo tshav kub hloov mus rau hauv lub rhiab heev. ntxiv decomposition ntawm chromium oxide. Txhawm rau ua tiav qhov no, cov txheej txheem ntawm kev ntxiv me me ntawm cov dej tuaj yeem siv los txo cov tshuaj tiv thaiv kub. Ntawm ib sab, Cr2O3 yog soluble hauv dej, thiab ntawm qhov tod tes, nws tuaj yeem ua rau cov khoom siv ntxiv thiab Cr2O3 raw khoom sib xyaw. Cov qauv kev soj ntsuam tau qhia tias qhov loj ntawm Cr2O3 tau mus txog ntau dua 99%. Cov tshuaj tiv thaiv kub thiab lub sij hawm kuj muaj kev cuam tshuam loj heev rau decomposition ntawm chromic anhydride.
3.3) Kev npaj ntawm Chromium (III) oxide los ntawm chromic oxide
Txog rau tam sim no, txawm hais tias muaj ntau txoj hauv kev los tsim Chromium (III) hydroxide los ntawm Chromium (III) sulfate tov los ntawm neutralization thiab kev sib cais, Chromium (III) hydroxide generated yog ib yam khoom zoo colloidal, uas yog ib qho nyuaj rau kho thiab tsis muaj purity. . Tom qab lub sij hawm ntev cia, nws yog insoluble nyob rau hauv acid thiab alkali; Tsis tas li ntawd, yog hais tias tus neutralizer siv alkali hlau hydroxides los yog carbonates, nws yuav tsim insoluble los yog insoluble by-products, uas txwv tsis pub siv cov neutralizer thiab txwv kev nce qib ntawm txoj kev no. Txhawm rau daws qhov teeb meem no, German patent 418050 tau npaj cov txheej txheem hauv qab no los tsim Chromium (III) hydroxide:
Tab sis txoj kev no kuj muaj qhov tsis xws luag: kev ua haujlwm yog qhov nyuaj, thiab hlau yooj yim sib xyaw nrog Chromium (III) hydroxide phuam. Yog li ntawd, Chromium (III) hydroxide yog npaj los ntawm neutralizing Chromium (III) chloride aqueous tov uas yog ib qho yooj yim mus use.
Tsis tas li ntawd, cov dej-soluble trivalent chromium ntsev yog siv los tsim chromium oxide los ntawm Chromium (III) hydroxide los yog chromium hydroxide (CROOH); Siv chromium uas muaj pov tseg los tsim chromium oxide; Kev npaj cov xim qib chromium oxide los ntawm cov xim tsis muaj xim chromium oxide; Direct zus tau tej cov yaj tshuab chromium oxide siv aluminothermic los yog silicothermic txoj kev.
Txais tos kom nug peb ntxivChromium Oxide Ntsuablos ntawm email:Vip@Greefield.com los yog los ntawm WhatsApp:+86139 5726 4669smoothly, TDS thov los ntawmWhatsApp pawg .
