Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing building gypsum by pretreating titanium gypsum with sulfuric acid process acidic wastewater
The invention discloses a method for preparing building gypsum by pretreating titanium gypsum with sulfuric acid process acidic wastewater, which comprises the following steps: (1) carrying out ball milling treatment on titanium gypsum, and screening to obtain powder A; (2) pretreating the powder A obtained in the step (1) by using acidic wastewater, and carrying out solid-liquid separation to obtain a filter cake A; (3) carrying out drying, ball milling and screening treatment on the filter cake A obtained in the step (2) to obtain high-purity titanium gypsum; and (4) calcining and aging the high-purity titanium gypsum obtained in the step (3), and modifying with an additive to obtain the building gypsum. The waste stockpiled titanium gypsum is used as a raw material, and the sulfuric acid process acid wastewater is used as an impurity removal reagent, so that the production cost is effectively reduced, and the environmental pollution is reduced; the high-purity titanium gypsum is obtained through the acid pickling reaction, and the resource utilization rate of the titanium gypsum is increased; after the high-purity titanium gypsum is obtained, the high-purity titanium gypsum is prepared into the high-performance building gypsum through calcination, aging and additive modification treatment.
本发明公开了一种硫酸法酸性废水预处理钛石膏制备建筑石膏的方法，包括如下步骤：(1)将钛石膏球磨处理，经筛分后得到粉体A；(2)利用酸性废水对步骤(1)所得粉体A进行预处理，经固液分离后，得到滤饼A；(3)将步骤(2)所得滤饼A进行干燥、球磨、筛分处理，得到高纯钛石膏；(4)将步骤(3)所得高纯钛石膏进行煅烧与陈化处理，再经外加剂改性后，得到建筑石膏。本发明以废弃堆存的钛石膏为原材料、以硫酸法酸性废水为除杂试剂，有效降低生产成本、减少环境污染；本发明先酸洗反应得到高纯钛石膏，提高钛石膏的资源化利用率；本发明在得到高纯钛石膏后通过煅烧、陈化与外加剂改性处理，将高纯钛石膏制备成为高性能的建筑石膏。
Method for preparing building gypsum by pretreating titanium gypsum with sulfuric acid process acidic wastewater
The invention discloses a method for preparing building gypsum by pretreating titanium gypsum with sulfuric acid process acidic wastewater, which comprises the following steps: (1) carrying out ball milling treatment on titanium gypsum, and screening to obtain powder A; (2) pretreating the powder A obtained in the step (1) by using acidic wastewater, and carrying out solid-liquid separation to obtain a filter cake A; (3) carrying out drying, ball milling and screening treatment on the filter cake A obtained in the step (2) to obtain high-purity titanium gypsum; and (4) calcining and aging the high-purity titanium gypsum obtained in the step (3), and modifying with an additive to obtain the building gypsum. The waste stockpiled titanium gypsum is used as a raw material, and the sulfuric acid process acid wastewater is used as an impurity removal reagent, so that the production cost is effectively reduced, and the environmental pollution is reduced; the high-purity titanium gypsum is obtained through the acid pickling reaction, and the resource utilization rate of the titanium gypsum is increased; after the high-purity titanium gypsum is obtained, the high-purity titanium gypsum is prepared into the high-performance building gypsum through calcination, aging and additive modification treatment.
本发明公开了一种硫酸法酸性废水预处理钛石膏制备建筑石膏的方法，包括如下步骤：(1)将钛石膏球磨处理，经筛分后得到粉体A；(2)利用酸性废水对步骤(1)所得粉体A进行预处理，经固液分离后，得到滤饼A；(3)将步骤(2)所得滤饼A进行干燥、球磨、筛分处理，得到高纯钛石膏；(4)将步骤(3)所得高纯钛石膏进行煅烧与陈化处理，再经外加剂改性后，得到建筑石膏。本发明以废弃堆存的钛石膏为原材料、以硫酸法酸性废水为除杂试剂，有效降低生产成本、减少环境污染；本发明先酸洗反应得到高纯钛石膏，提高钛石膏的资源化利用率；本发明在得到高纯钛石膏后通过煅烧、陈化与外加剂改性处理，将高纯钛石膏制备成为高性能的建筑石膏。
Method for preparing building gypsum by pretreating titanium gypsum with sulfuric acid process acidic wastewater
一种硫酸法酸性废水预处理钛石膏制备建筑石膏的方法
PAN GANGHUA (Autor:in) / SUN JIAYU (Autor:in) / MENG HAINING (Autor:in) / ZHOU FEIFEI (Autor:in) / AO LIN (Autor:in) / LU XIAOJUN (Autor:in)
29.08.2023
Patent
Elektronische Ressource
Chinesisch
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