Habka wax soo saarka ee Sodium metasilicate pentahydrate

Metasilicate Sodium pentahydrate habka wax soo saarka

Hababka isku dhafan ee metasilicate sodium waxaa ka mid ah habka qalajinta buufinta, habka crystallization adag dhalaalaysa, habka granulation hal mar iyo habka crystallization xal

Habka crystallization wuxuu leeyahay sifooyinka maalgashiga qalabka yar, kharashka wax soo saarka hooseeya iyo tayada xasilloon. Socodka geedi socodka waxaa lagu muujiyay sida soo socota

2.1 Saamaynta feejignaanta crystal

Sodium metasilicate pentahydrate waxaa lagu diyaariyaa habka crystallization xal. Marka loo eego jaantuska wejiga [3], xoojinta xalkeeda crystallization (Na2O+SiO2) waa in la xakameeyaa ilaa inta

Sodium metasilicate pentahydrate waxa lagu soo saari karaa inta u dhaxaysa 25% ~ 28% (jajab tiro). Si kastaba ha ahaatee, waxaa jira N a2O iyo SiO2 ku filan xalka

Tirada labada dhinacba way saamaysaa. Qaybta tirada guud ee 8i02 waa sare, muddada crystallization waa dheer, iyo saamiga silsilad ee n (Na2O) / n (SiO2) si toos ah loo isticmaalo waa 1,

Xalka ka kooban 58% jajab ballaaran ayaa la dhalaaliyay, waxaana lagu daray iniinaha crystallized. Wareegga crystallization waxay qaadataa 72 ~ 120h; Waxyaabaha ugu sarreeya ee Na2O

Xawaaruhu waa dhakhso badan yahay, laakiin xawaaraha crystallization-ka degdega ah waa sahlan tahay in la keeno qaybo ka samaysan crystall, Na2O badan oo kobcinta crystall, iyo modules-ka badeecada waa ay adagtahay in la gaaro

Shuruudaha, eeg Shaxda 1.

2.2 Saamaynta abuur

In geeddi-socodka crystallization ee metasilicate sodium, si loo xakameeyo tayada crystal iyo helitaanka alaabta leh size qayb ka mid ah

Ku dar miraha crystal leh cabbirka iyo tirada saxda ah, oo si tartiib ah u walaaq habka oo dhan si aad uga dhigto iniinaha crystals si siman u hakiyay dhammaan xalka

Iska yaree xadiga nukleation-ka labaad, si ay walxaha crystallized kaliya ugu koraan dusha sare ee iniinta crystal

Qadarka kristanta abuurku ku daray waxay ku xidhan tahay tayada, kala duwanaanshaha iyo cabbirka qayb ka mid ah alaabta oo la crystallized karaa inta lagu guda jiro habka crystallization oo dhan iyo alaabta la doonayo.

granularity ee. Iyadoo loo malaynayo in iniin nukliyeer ah oo asaasiga ahi aanu ku dhalan habka, tirada qaybaha alaabta la dhammeeyey waxay la mid tahay tirada qaybaha abuur macmal ah ee dhowaan lagu daray.

Mp/KvpLp3=Ms/KvLs3P, dabadeed M s=Mp (Ls/Lp) 3

Halkee: M s, M p —— tayada abuur crystal ah iyo alaabta dhammaatay; Ls, Lp —- celceliska cabbirka qayb ka mid ah abuur crystal iyo alaabta la dhammeeyey; K v, P metasiliic acid

Hantida jireed ee joogtada ah ee sodium.

Habka crystallization of sodium metasilicate aqueous xal, marka loo eego falanqaynta ee kala guurka wajiga crystal, ay sabab u tahay ballaca cidhiidhi ah ee aagga metastable, waa ay fududahay in la galo.

Aagga aan xasilloonayn, miraha leh cabbirka qayb ka mid ah 0.1-0.2mm ayaa guud ahaan lagu daraa. Haddii celceliska cabbirka walxaha alaabta la dhammeeyey loo baahan yahay inuu ahaado 1mm iyadoo la tixgelinayo waxa aan laga fursan karin

Tirada nucleation-ka ee xalka xorta ah laftiisa waa 40% ~ 60% jajabka tirada marka 0.1 m iniinaha crystal dhab ahaantii lagu daro.

2.3 Saamaynta heerkulka heerkulka

Habka crystallization of sodium metasilicate pentahydrate waa u nugul heerkulka, iyo korriintiisa crystall waxay u baahan tahay si ay u maraan habka induction, kaas oo la ansixiyay inta u dhaxaysa 50-60 ℃

Tirada guud ee nuclei-yada crystal-ka ayaa lagu xakameynayaa iyadoo lagu darayo miraha crystals ee xalka, ka dibna kareemku wuxuu u koraa si siman heerkul joogto ah iyo heerkul sare. Marxaladda dambe ee crystallization, qabooji heerka 1 ℃ daqiiqadii si aad uga dhigto crystall si degdeg ah u korto, oo kala saar walxaha marka ay gaadho 38-48 ℃

2.4 Saamaynta waxyaabaha kale ee lagu daro

Si loo fududeeyo kala-soocidda biyaha bilaashka ah iyo crystal inta lagu jiro hawlgalka kala-soocidda, saamiga 0.005% ~ 0.015% wadarta guud waa in la qaataa 0.5h ka hor dhamaadka qaboojinta

Xiisadda dusha sare ee u dhaxaysa crystal iyo biyaha waa la dhimi karaa iyada oo lagu daro dodecyl sulfonic acid surfactant hal mar, kaas oo xorayn kara saamiga qoyan.

Biyuhu waxay hoos uga dhacaan 4% qalajinta iyo kaydinta