本文選題：快速流化床 + 脫硫石膏��； 參考：《新型建筑材料》2017年02期

【摘要】：為提高脫硫石膏煅燒效率及產(chǎn)品質(zhì)量,設(shè)計了一種新型快速流化床煅燒裝置。在14.5 m/s的操作流化風(fēng)速下,對不同煅燒溫度條件下脫硫石膏性能進行了分析,以便確定最佳的操作條件。試驗結(jié)果表明:提高煅燒溫度至386℃時,原狀脫硫石膏脫水率接近100%;當(dāng)煅燒溫度高于250℃后,脫水脫硫石膏的礦相由CaSO_4·0.5H_2O和CaSO_4·0.67H_2O兩相構(gòu)成。416℃范圍內(nèi)沒有發(fā)現(xiàn)AⅡ-CaSO_4相存在。煅燒溫度與脫水脫硫石膏比表面積、標準稠度用水量均呈線性關(guān)系。煅燒溫度提高后脫水脫硫石膏再水化硬化體致密性顯著增加,試樣力學(xué)性能同樣得以提高。當(dāng)快速流化床煅燒溫度為386℃,脫硫石膏脫水率可達99.3%,力學(xué)性能最佳。
[Abstract]:In order to improve the calcination efficiency and product quality of desulphurized gypsum, a new type of fast fluidized bed calcinator was designed. The performance of desulphurized gypsum at different calcination temperature was analyzed at 14.5 m / s operating fluidization velocity in order to determine the best operating conditions. The results show that the dehydration rate of undisturbed desulphurized gypsum is close to 100 when the calcination temperature is up to 386 鈩，

本文編號：1974028