sodium metasilicate anhydrous ndi Sodium metasilicate pentahydrate

Sodium metasilicate pentahydrate

Pakati pa mitundu ya sodium metasilicate, yomwe imagwiritsidwa ntchito kwambiri komanso yofananira ndi sodium metasilicate pentahydrate. The molecular formula ya sodium metasilicate pentahydrate crystal nthawi zambiri imalembedwa kuti na25io3 ・ 5H20, yomwe kwenikweni ndi tetrahydrate ya sodium dihydrosilicate yokhala ndi ma cations awiri, okhala ndi kusungunuka kwa 50g/100g madzi (20 ℃) ​​ndi malo osungunuka a 72 ℃. Sodium metasilicate pentahydrate ali ambiri makhalidwe a sodium silicate ndi sodium metasilicate, ndipo ali ndi mphamvu yomanga ya calcium ndi magnesium ayoni, makamaka kumanga mphamvu ya ayoni magnesium ndi wamkulu kuposa 260 mg wa mgco2/g (35 ℃ min). Pankhani ya kupanga, sodium metasilicate pentahydrate ikhoza kufotokozedwa mwachidule m'njira zitatu: choyamba, "njira yopitilira granulation",

Sodium metasilicate yankho amadutsa mu granulation crystallization chipangizo mwachindunji ndi mosalekeza kubala tinthu ting'onoting'ono kukula chofunika. Mndandanda wamtundu umakwaniritsa zofunikira za hg/t2568-94. Maonekedwe a mankhwalawa ndi tinthu tating'onoting'ono tozungulira, toyera kwambiri komanso madzi abwino. Ndi mankhwala apamwamba. Njirayi ndi yoyenera kupanga zazikulu, koma zimakhala zovuta kuzidziwa chifukwa cha luso lake lamphamvu. Choyamba, "crystallization madzi m'thupi njira" ndi "crystallization kuphwanya njira", "crystallization madzi m'thupi njira", amatchedwanso mayi mowa kufalitsidwa njira, ndi kuwonjezera sodium metasilicate njira kwa crystal mbewu kapena mowa mowa kwa kuzirala ndi crystallization, ndiyeno dynamically youma. ndi chophimba pambuyo centrifugal kutaya madzi m'thupi kupeza ufa ndi mankhwala granular. Njirayi ndi yovuta pakupanga kwakukulu, koma maonekedwe a mankhwala ndi madzimadzi ndi abwino, ndipo zizindikiro za thupi ndi mankhwala zingathenso kukwaniritsa zofunikira za hg / t2568-94. "Crystallization kuphwanya njira" ndi kuganizira sodium metasilicate njira ndende chofunika, kutsogolera njira crystallize mu zolimba blocky powonjezera crystal mbewu ndi zina, kusintha madzi onse aulere mu madzi crystalline, ndi kuphwanya olimba mu zomalizidwa mankhwala. Ubwino wa njirayi ndikuti ndalamazo ndi zazing'ono, koma kuwonongeka kwa mawonekedwe a kristalo ndizovuta kwambiri, zofunikira panyengo yanyengo komanso kuwongolera kumakhala kovutirapo, kuchuluka kwa ntchito kumakhala kwakukulu, kuyera kwazinthuzo kumakhala kochepa, ndipo ndikosavuta kuyamwa chinyezi ndi ma agglomerate, Zolozera zakuthupi ndi zamankhwala nthawi zambiri sizingakwaniritse zofunikira za hg/t2568-94. Kugwiritsa ntchito mankhwala granular ndi fumbi-free, amene angathe kukwaniritsa zofunika kunja: ufa ndi granular mankhwala opangidwa ndi njira ziwiri zotsirizira ntchito fumbi lalikulu, ndipo kunja ndi ochepa.

sodium metasilicate Anhydrous 

Anhydrous sodium metasilicate molecular formula Na2SiO3, pH mtengo ndi pafupifupi 12.4, malo osungunuka ndi 1089 ℃, kachulukidwe ndi.0.8-1.2g/cm3, kusungunuka kwamadzi kumakhala mofulumira, ndipo vitrification sidzachitika. Anhydrous sodium metasilicate imagwira ntchito bwino kuposa hydrated sodium metasilicate m'magawo ena. Anhydrous sodium metasilicate ili ndi tinthu ting'onoting'ono, malo akuluakulu enieni komanso mayamwidwe apamwamba amafuta, omwe amathandizira kuchotsa madontho amafuta. Zonse za alkali ndi silicon dioxide zomwe zili mu anhydrous sodium metasilicate ndi ≥ 94%. Poyerekeza ndi hydrated pakachitsulo metasilicate, izo bwino kumanga mphamvu ya Ca ndi Mg ayoni, ndi mbali yofunika kwambiri kulimbikitsa kufewetsa madzi olimba, kusintha ndi kukhazikika pH mtengo, kuwongolera ntchito surfactants, kuwongolera decontamination, kubalalitsa dothi eluted, ndi kusunga dongosolo labwino la ufa. Anhydrous sodium metasilicate sadzakhala precipitate madzi galasi, ndipo amasonyeza ngakhale wapadera ndi bata organic chlorine, peroxide ndi Bleaching synergist mu zotsukira. Mphamvu yotsuka ndi yabwino kwambiri kuposa hydrated silicon metasilicate ndi 4A zeolite. Kutengera mphamvu yamphamvu ya anhydrous sodium metasilicate to chelate magnesium ions ndi 4A zeolite to chelate calcium ions, awiriwa ali ndi mwayi wowonjezera mu anhydrous sodium metasilicate-4a zeolite binary additives, omwe ali ndi kuthekera kokwanira kwa chelate calcium ndi magnesium ions, ndipo ali ndi zabwino kwambiri. ntchito mu synergistic zotsatira za surfactants. Opanga ufa wochapira adzawonjezera kuchuluka kwa anhydrous sodium metasilicate

Magawo ogwiritsira ntchito a anhydrous sodium metasilicate ndi hydrated sodium metasilicate intersect, koma m'minda yomwe imakhudzidwa ndi madzi a crystal, anhydrous silicon metasilicate idzasankhidwa m'malo mwa silicon ya hydrated.