發(fā)布時間：2018-05-29 13:42

  本文選題：脫硫石膏 + 降溫重結(jié)晶法　； 參考：《化工礦物與加工》2017年07期

【摘要】：以脫硫石膏為原料,通過重結(jié)晶法制備了硫酸鈣晶須。研究了固液比、鹽酸濃度、重結(jié)晶時間以及反應(yīng)溫度對晶須形貌的影響,在偏光顯微鏡下觀察晶須的形貌并計算晶須的平均長徑比。結(jié)果表明,當(dāng)固液比為1∶12、鹽酸濃度為2mol/L、重結(jié)晶時間為3h、反應(yīng)溫度為90℃時,硫酸鈣晶須大小較均勻,平均長徑比為40.23。XRD分析顯示,晶須的主晶相為二水硫酸鈣。在此基礎(chǔ)上初步探索了硫酸鈣晶須對半水石膏的增強效果,制品抗壓強度可達6.28MPa,較空白樣提高20.07%。
[Abstract]:Calcium sulfate whisker was prepared by recrystallization from desulphurized gypsum. The effects of solid-liquid ratio, concentration of hydrochloric acid, recrystallization time and reaction temperature on the morphology of whisker were studied. The morphology of whisker was observed under polarizing microscope and the average aspect ratio of whisker was calculated. The results show that when the ratio of solid to liquid is 1: 12, the concentration of hydrochloric acid is 2 mol / L, the recrystallization time is 3 h and the reaction temperature is 90 鈩，

本文編號：1951082