Fluoropgypsum tswj lub sij hawm retarding ntawm cement
1) maj mam txo S03 cov ntsiab lus hauv cov cement. Piv txwv li, P - 042.5 R cement los ntawm 2.30 ntxiv rau 0.20 feem pua rau 2.15 ntxiv rau 0.20 feem pua hauv theem. Txawm li cas los xij, nrog kev poob qis S03, 3 d cement zog thiab fluidity ntawm net cement slurry. Kev tsim khoom txhua hnub, cov neeg siv khoom sib xyaw ua ke ntawm clinker zoo thiab cov txheej txheem sib tsoo, thiab tom qab kev sim, txiav txim siab cov cement S03 cov ntsiab lus hauv kev tswj ntawm qhov chaw yog nyob rau hauv 2.20 feem pua 2.60 feem pua thaum lub ntsiab lus tseeb kuj tsis loj. Yog li qhov kawg tswj raws li lub hom phiaj tseem ceeb.(2) ua ke ntawm clinker thiab xis mas teem sij hawm, nce lub plaster pwm thiab kom txo tau cov kev siv ntawm thawj lub xeev ntawm chlorine gypsum (hmoov), txawm lub sij hawm ib feem ntawm plaster pwm. Tab sis vim hais tias plaster pwm dej, cement tom qab cia rau ib lub sij hawm, tom qab hydration ntawm cement, cement lub zog poob sharply. Txhawm rau txo qhov ntau npaum li cas ntawm cov khoom sib xyaw, yog li ntawd, ua rau muaj kev nce nqi ntawm cov cement ntau lawm.(3) txo lub sij hawm clinker. Vim tias cov khoom siv, cov txheej txheem txheej txheem thiab clinker zoo Performance index, txo lub sij hawm teem ntawm lub peev xwm yog txwv.(4) tib lub roj plaster ntawm kev hloov kho thiab tswj kev puas tsuaj impurities (hmoov), txij li lub Kaum Ib Hlis 2015, thawj lub xeev ntawm chlorine gypsum (hmoov) tau hloov kho, thiab tswj P20550.20 feem pua. Moisture, acidity, P205 tswj qhov tseem ceeb, thiab lav ib qho dej ntawm crystallization. Kev ntsuas tom qab kev siv, lub sijhawm teem sijhawm ntawm cov cement yeej tswj tau., congestion ntawm lub valve Chambers (2): oxygen gypsum (hmoov) vim nws lub cev muaj zog (viscosity, ntub dej) system cuam tshuam loj heev, thawj zaug pib siv chlorine gypsum. (hmoov) yog tib yam nrog gypsum pwm forklift los ntawm tawg kawg nyob rau hauv kev xa mus rau lub tsev qiv ntawv, vim hais tias cov nplaum siv, cov khoom siv, cov neeg ua hauj lwm siv zog, thiab nyob rau hauv lub tsev ntawm cov yob raug tso tseg, tso tawm lub qhov ncauj shrinking, feem ntau noj yog tsis tu ncua ntawm Elephant.
Kev ntsuas: gypsum (hmoov) ua rau cov pa oxygen loj heev, kev hloov pauv oxygen tom qab lub qhov tso tawm yog nyob rau hauv tus txheej txheem ntawm kev xa tawm tib lub sijhawm, tseem tsis tau daws qhov teeb meem. Thaum kawg, kev hloov pauv thev naus laus zis rau cov ntawv xa tawm (kev vibration), tuaj yeem siv tas li siv cov pa gypsum (hmoov).
