由二氧化钛生产副产品制成的石膏砌块。
Gypsum blocks produced from TiO2 production by-products.
作者信息
Zhang Yihe, Wang Fan, Huang Hongwei, Guo Yuxi, Li Baoying, Liu Yangyang, Chu Paul K
机构信息
a Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology , China University of Geosciences , Beijing , 100083 People's Republic of China.
b Department of Physics & Materials Science , City University of Hong Kong , Kowloon , People's Republic of China.
出版信息
Environ Technol. 2016;37(9):1094-100. doi: 10.1080/09593330.2015.1102329. Epub 2015 Oct 29.
Calcined titanium gypsum was investigated by the ways of XRD (powder X-ray diffraction), XRF (X-ray fluorescence) and TG-DTA (thermogravimetric-differential thermal analyses). It was employed as raw material for making lightweight materials. The influence of cement, amount of water/solid (W/S) ratio, water-reducing agent, citric acid content and the hydration age on the gypsum blocks was investigated. The results showed that the optimum W/S ratio, cement content and water-reducing agent are 0.9, 10% and 2 wt% for the calcined gypsum from titanium gypsum, respectively. The 5.96 MPa was attained after 7 days of ageing. It was also found that the citric acid is inappropriate to be used in the production of gypsum blocks from TiO2 production by-products.
通过X射线衍射（XRD）、X射线荧光光谱（XRF）和热重-差热分析（TG-DTA）等方法对煅烧钛石膏进行了研究。将其用作制备轻质材料的原料。研究了水泥、水固比（W/S）、减水剂、柠檬酸含量和水化龄期对石膏砌块的影响。结果表明，对于钛石膏煅烧石膏，最佳水固比、水泥含量和减水剂用量分别为0.9、10%和2 wt%。养护7天后抗压强度达到5.96 MPa。还发现柠檬酸不适用于由TiO₂生产副产品制备石膏砌块。
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