Qiimaha pH-ga guud ee alaabada gypsum-ku waa asiidh ama dhexdhexaad. Hadda waxaa jira laba nooc oo heerka dhismaha ah.hydroxypropyl methylcellulosesuuqa: cellulose-ka si tartiib ah u milmaya iyo cellulose-ka degdega ah (S). Cellulose-ka degdega ah kuma habboona nidaamyada gypsum-ka. Badeecadaha, milmidu aad bay u liidataa xaaladaha aashitada ama dhexdhexaadka ah, hydroxypropyl methylcellulose-ka si tartiib ah u milmayana waxaa lagu milmi karaa alaabada gypsum-ka, laakiin cellulose-ka si tartiib ah u milmaya wuxuu leeyahay khasaare weyn, way fududahay in la isku ururiyo (marka gypsum-ka Ka dib marka madfac lagu walaaqo derbiga muddo gaaban, dhibco yaryar oo granular ah ayaa u muuqda inay ka soo muuqdaan dusha sare). Waqtigan xaadirka ah, alaabada gypsum-ka, gaar ahaan madfac gypsum-ka lagu buufiyo mashiinka, waxaa loo baahan yahay in cellulose ether si buuxda loo kala firdhi karo oo loo milmi karo waqti aad u gaaban gudaheed, taas oo naga baahan inaan sameyno cilmi-baaris qoto dheer oo ku saabsan habka wax soo saarka cellulose-ka si tartiib tartiib ah u milmaya. Daaweynta dusha sare (ma aha waxa loogu yeero ku darista waxyaabaha kale ee lagu daro cellulose ether heerka caadiga ah), si loogu waafajiyo nidaamka hoobiyaha gypsum-ka. Hydroxypropyl methylcellulose ether oo leh daaweyn dusha sare oo qoto dheer waxay yeelan kartaa waqti kala diris deggan iyo sifooyin farsamo oo wanaagsan hoobiyaha gypsum-ka, waxayna si weyn u hagaajin kartaa habka siman iyo dhammaystirka hoobiyaha.
Matoorka gypsum-ka ee lagu buufiyo mashiinka guud ahaan wuxuu isticmaalaa hydroxypropyl methylcellulose ether oo ah viscosity hooseeya inta u dhaxaysa 20,000 iyo 75,000, tirada dheeraadka ahna guud ahaan waa 0.2% ilaa 0.4%. Waqtiga dejinta matoorka gypsum-ka ee lagu buufiyo mashiinka waxaa la xakameeyaa qiyaastii 1 saac. Waxaan isticmaalnaa cadaadiska wax soo saarka matoorka gypsum, viscosity-ga balaastikada, thixotropy, rheology-ga iyo joogtaynta slurry si loo qiimeeyo waxqabadka alaabada matoorka gypsum-ka.
Waxaan tixgelineynaa xakamaynta tayada ee habka kalcinta isha ee desulfurization gypsum, buuxinta (sibidhka, isku-darka wanaagsan, budada calcium culus) iyo isku-darka (waxaa loo isticmaali karaa budada latex-ka ee kala firdhisan, hydroxypropyl methyl cellulose ether, perlite ballaaran, gypsum retarder) Doorashada qaacidada guud ee wax soo saarka kharash-ool ah.
Cellulose Hydroxypropyl methyl etherwaayo, hoobiyaha gypsum-ku wuxuu leeyahay nadiifnimo sare iyo shaqeyn wanaagsan, waxaana si weyn u ammaanay macaamiisha hoobiyaha gypsum-ka.
Waqtiga boostada: Abriil-25-2024