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Crystal transformation titanium gypsum, method and system for preparing crystal transformation titanium gypsum by using byproduct acidic wastewater generated in production of titanium dioxide by sulfuric acid method, and application of crystal transformation titanium gypsum
The invention relates to the technical field of treatment of titanium dioxide by-product acidic wastewater, in particular to crystal transformation titanium gypsum, a method and a system for preparing the crystal transformation titanium gypsum by using the titanium dioxide by-product acidic wastewater and application of the crystal transformation titanium gypsum. The method comprises the following steps: pre-treating the byproduct acidic wastewater generated in production of titanium dioxide by a sulfuric acid method, adding a calcium agent and a seed crystal into the obtained acidic waste liquid, carrying out reaction crystal transformation, and carrying out solid-liquid separation on obtained crystal transformation turbid liquid to obtain crystal transformation titanium gypsum. The invention also discloses the crystal transformation titanium gypsum prepared by the method, an application of the crystal transformation titanium gypsum in preparation of high-quality building gypsum and high-temperature gypsum, and a system for realizing the method. The Dv50 particle size of the crystal transformation modified titanium gypsum is 30-80 [mu] m, the free water content is 15-25%, the crystal transformation modified titanium gypsum meets the quality of a cementing material, the comprehensive utilization rate of the byproduct titanium gypsum is greatly increased, and the crystal transformation modified titanium gypsum is applied as a building cementing material and a polymer filler.
本发明涉及生产钛白粉副产酸性废水处理技术领域，具体涉及转晶钛石膏、利用钛白粉副产酸性废水制备转晶钛石膏的方法和系统及应用。该方法包括：将硫酸法生产钛白粉副产的酸性废水进行预处理，得到酸性废液中加入钙剂和晶种进行反应转晶，得到转晶浊液固液分离，获得转晶钛石膏。本发明还公开了该方法制备的转晶钛石膏及其在制备高品质建筑石膏和高温石膏的应用，以及实现该方法的系统。本发明的转晶改性钛石膏的Dv50粒径30～80μm，游离水含量为15～25％，满足胶凝材料品质的转晶改性钛石膏，大幅度提高了副产物钛石膏的综合利用率，作为建筑胶凝材料和高分子填料应用。
Crystal transformation titanium gypsum, method and system for preparing crystal transformation titanium gypsum by using byproduct acidic wastewater generated in production of titanium dioxide by sulfuric acid method, and application of crystal transformation titanium gypsum
The invention relates to the technical field of treatment of titanium dioxide by-product acidic wastewater, in particular to crystal transformation titanium gypsum, a method and a system for preparing the crystal transformation titanium gypsum by using the titanium dioxide by-product acidic wastewater and application of the crystal transformation titanium gypsum. The method comprises the following steps: pre-treating the byproduct acidic wastewater generated in production of titanium dioxide by a sulfuric acid method, adding a calcium agent and a seed crystal into the obtained acidic waste liquid, carrying out reaction crystal transformation, and carrying out solid-liquid separation on obtained crystal transformation turbid liquid to obtain crystal transformation titanium gypsum. The invention also discloses the crystal transformation titanium gypsum prepared by the method, an application of the crystal transformation titanium gypsum in preparation of high-quality building gypsum and high-temperature gypsum, and a system for realizing the method. The Dv50 particle size of the crystal transformation modified titanium gypsum is 30-80 [mu] m, the free water content is 15-25%, the crystal transformation modified titanium gypsum meets the quality of a cementing material, the comprehensive utilization rate of the byproduct titanium gypsum is greatly increased, and the crystal transformation modified titanium gypsum is applied as a building cementing material and a polymer filler.
本发明涉及生产钛白粉副产酸性废水处理技术领域，具体涉及转晶钛石膏、利用钛白粉副产酸性废水制备转晶钛石膏的方法和系统及应用。该方法包括：将硫酸法生产钛白粉副产的酸性废水进行预处理，得到酸性废液中加入钙剂和晶种进行反应转晶，得到转晶浊液固液分离，获得转晶钛石膏。本发明还公开了该方法制备的转晶钛石膏及其在制备高品质建筑石膏和高温石膏的应用，以及实现该方法的系统。本发明的转晶改性钛石膏的Dv50粒径30～80μm，游离水含量为15～25％，满足胶凝材料品质的转晶改性钛石膏，大幅度提高了副产物钛石膏的综合利用率，作为建筑胶凝材料和高分子填料应用。
Crystal transformation titanium gypsum, method and system for preparing crystal transformation titanium gypsum by using byproduct acidic wastewater generated in production of titanium dioxide by sulfuric acid method, and application of crystal transformation titanium gypsum
转晶钛石膏、利用硫酸法生产钛白粉副产酸性废水制备转晶钛石膏的方法和系统及应用
FANG YANZHANG (author) / PEI YADI (author) / ZOU YULIN (author) / ZHOU YUANQI (author)
2024-03-29
Patent
Electronic Resource
Chinese
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