Sodium metasilicate pentahydrate
Ntawm cov ntau yam ntawm sodium metasilicate, feem ntau siv thiab raug yog sodium metasilicate pentahydrate. Cov mis mos molecular ntawm sodium metasilicate pentahydrate siv lead ua feem ntau yog sau li na25io3 ・ 5H20, uas yog tetrahydrate ntawm sodium dihydrosilicate nrog ob cations, nrog solubility ntawm 50g / 100g dej (20 ℃) thiab melting point ntawm 72 ℃. Sodium metasilicate pentahydrate muaj cov yam ntxwv dav dav ntawm sodium silicate thiab sodium metasilicate, thiab muaj qee lub peev xwm khi ntawm calcium thiab magnesium ions, tshwj xeeb tshaj yog muaj peev xwm khi ntawm magnesium ions ntau dua 260 mg mgco2 / g (35 ℃ min). Nyob rau hauv cov nqe lus ntawm cov txheej txheem ntau lawm, sodium metasilicate pentahydrate tuaj yeem suav nrog hauv peb hom: ua ntej, "txoj kev granulation txuas ntxiv",
Sodium metasilicate tov yog dhau los ntawm granulation crystallization ntaus ntawv ncaj qha thiab tsis tu ncua tsim cov khoom ntawm qhov xav tau loj. Qhov Performance index ua tau raws li qhov yuav tsum tau ua ntawm hg / t2568-94 tus qauv. Cov tsos ntawm cov khoom yog spherical hais, nrog siab whiteness thiab zoo fluidity. Nws yog cov khoom siv high-end. Txoj kev no yog tsim rau cov khoom loj, tab sis nws yog ib qho nyuaj rau tus tswv vim nws muaj zog technicality. Ua ntej, "crystallization dehydration method" thiab "crystallization crushing method", "crystallization dehydration method", tseem hu ua niam cawv txoj kev, yog ntxiv sodium metasilicate tov rau crystal noob los yog niam cawv kom txias thiab crystallization, thiab ces dynamically qhuav. thiab tshuaj ntsuam tom qab centrifugal lub cev qhuav dej kom tau cov hmoov thiab granular khoom. Txoj kev no yog qhov nyuaj rau kev tsim khoom loj, tab sis cov khoom zoo li thiab fluidity kuj zoo, thiab cov ntsuas lub cev thiab tshuaj muaj peev xwm ua tau raws li qhov yuav tsum tau ua ntawm hg / t2568-94 tus qauv. "Crystalization crushing method" yog kom mloog zoo rau cov tshuaj sodium metasilicate rau qhov yuav tsum tau ua, coj cov kev daws rau crystallize rau hauv cov khib nyiab los ntawm kev ntxiv cov noob siv lead ua thiab cov khoom ntxiv, hloov tag nrho cov dej dawb rau hauv dej crystalline, thiab zom cov khoom rau hauv cov khoom tiav. Qhov zoo ntawm cov qauv no yog tias kev nqis peev me me, tab sis kev puas tsuaj rau cov qauv siv lead ua yog qhov loj heev, cov kev cai rau kev nyab xeeb ib puag ncig thiab kev tswj xyuas yog qhov hnyav, kev siv zog ua haujlwm siab, qhov dawb ntawm cov khoom yog tsawg, thiab nws yooj yim rau nqus dej noo thiab agglomerate, Lub cev thiab tshuaj indexes feem ntau tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm hg / t2568-94 tus qauv. Kev siv cov khoom siv granular tsis muaj plua plav, uas tuaj yeem ua tau raws li cov kev xav tau ntawm kev xa tawm: cov hmoov thiab cov khoom granular tsim los ntawm ob txoj kev siv cov plua plav loj, thiab kev xa tawm tsuas yog txwv.
Anhydrous sodium metasilicate molecular mis Na2SiO3, pH tus nqi yog hais txog 12.4, melting point yog 1089 ℃, ceev yog.0.8-1.2g / cm3, dissolution tus nqi nyob rau hauv dej yog ceev, thiab vitrification yuav tsis tshwm sim. Anhydrous sodium metasilicate muaj kev ua haujlwm zoo dua li hydrated sodium metasilicate hauv qee qhov chaw. Anhydrous sodium metasilicate muaj cov khoom sib xws, thaj chaw loj tshwj xeeb thiab cov roj nqus dej siab, uas yog qhov tsim nyog rau kev tshem tawm cov roj stains. Tag nrho cov alkali thiab silicon dioxide cov ntsiab lus ntawm anhydrous sodium metasilicate yog ≥ 94%. Piv nrog rau hydrated silicon metasilicate, nws txhim kho lub peev xwm khi ntawm Ca thiab Mg ions, thiab ua lub luag haujlwm tseem ceeb hauv kev txhawb nqa cov dej tawv tawv, kho thiab stabilizing pH tus nqi, txhim kho kev ua haujlwm ntawm surfactants, txhim kho decontamination, dispersing cov av eluted, thiab tswj kom zoo hmoov zoo. Anhydrous sodium metasilicate yuav tsis precipitate crystal dej, thiab qhia tshwj xeeb compatibility thiab stability rau organic chlorine, peroxide thiab bleaching synergist nyob rau hauv detergent. Cov nyhuv ntxuav yog zoo dua li hydrated silicon metasilicate thiab 4A zeolite. Raws li lub peev xwm muaj zog ntawm anhydrous sodium metasilicate rau chelate magnesium ions thiab 4A zeolite rau chelate calcium ions, ob qho tib si muaj txiaj ntsig zoo hauv anhydrous sodium metasilicate-4a zeolite binary additives, uas muaj peev xwm chelating txaus ntawm calcium thiab magnesium ions, thiab muaj kev zoo heev. kev ua tau zoo hauv cov nyhuv synergistic ntawm surfactants. Ntxuav hmoov manufacturers yuav ntxiv ib tug loj npaum li cas ntawm anhydrous sodium metasilicate
Daim ntawv thov teb ntawm anhydrous sodium metasilicate thiab hydrated sodium metasilicate cuam tshuam, tab sis nyob rau hauv cov teb rhiab rau cov dej siv lead ua, anhydrous silicon metasilicate yuav raug xaiv los ntawm hydrated silicon.
Post lub sij hawm: Aug-04-2022