Sidee loo doortaa hydroxypropyl methylcellulose ee hoobiye malaasta ah?

Qiimaha pH-ga guud ee alaabta gypsum waa aashito ama dhexdhexaad. Hadda waxaa jira laba nooc oo darajada dhismaha ahhydroxypropyl methylcellulosesuuqa: cellulose qunyar u milma iyo cellulose degdeg ah (S). cellulose degdega ah kuma haboona nidaamyada gypsum. Alaabooyinka, milanka ayaa aad u liidata xaaladaha acidic ama dhexdhexaadka ah, iyo hydroxypropyl methylcellulose tartiib tartiib ah ayaa lagu milmi karaa alaabta gypsum, laakiin cellulose tartiib tartiib ah ayaa leh faa'iido darro weyn, way fududahay in la garto (marka gypsum ka dib markii hoobiye lagu walaaqay derbiga wakhti gaaban, meelaha yaryar waxay u muuqdaan kuwo dusha sare leh). Waqtigan xaadirka ah, alaabada gypsum-ka, gaar ahaan mashiinka gypsum-ka ee mashiinka lagu buufiyo, waxaa loo baahan yahay in ether-ka cellulose si buuxda loo kala firdhi karo oo loo kala diri karo waqti aad u yar, taas oo nooga baahan inaan sameyno cilmi-baaris qoto dheer oo ku saabsan habka wax-soo-saarka cellulose ether-ka-soo-saarka. Daaweynta dusha sare (ma aha waxa loogu yeero ku-darka waxyaabaha kale ee lagu daro ether fasalka caadiga ah), si ay ula qabsadaan nidaamka hoobiye gypsum. Hydroxypropyl methylcellulose ether oo leh daawaynta dusha qoto dheer waxay yeelan kartaa waqti degenaansho leh iyo sifooyin farsamo oo wanaagsan oo ku jira hoobiye gypsum, waxayna si weyn u wanaajin kartaa habka loo siman yahay iyo dhamaystirka hoobiye.

Madaafiicda gypsum-ka ee mashiinka lagu buufiyo guud ahaan waxay isticmaashaa viscosity hydroxypropyl methylcellulose ether inta u dhaxaysa 20,000 iyo 75,000, iyo qadarka dheeriga ah guud ahaan waa 0.2% ilaa 0.4%. Waqtiga dejinta ee hoobiye gypsum lagu buufiyay mashiinka ayaa la xakameynayaa qiyaastii 1 saac. Waxaan isticmaalnaa diiqada dhalidda hoobiye gypsum, viscosity caag ah, thixotropy, rheology iyo joogtaynta slurry si aan u xukunno waxqabadka alaabta hoobiye gypsum.

Waxaan tixgelineynaa xakamaynta tayada desulfurization geeddi-socodka calcining il gypsum, buuxinyaal (sibidhka, wadarta ganaax, budada calcium culus) iyo admixtures (waxaa loo isticmaali karaa kala firdhiso budada cinjirka, hydroxypropyl methyl cellulose ether, perlite balaariyay, gypsum retarder) Doorashada guud ee formula alaabta wax ku ool ah.

Hydroxypropyl methyl cellulose etherMadaafiicda gypsum-ka ayaa leh nadiif sare iyo karti shaqo oo wanaagsan, waxaana si weyn u ammaanay macaamiisha hoobiye gypsum.