Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Device and method for pretreating phosphogypsum by using magnesium hydroxide
The invention provides a device and a method for pretreating phosphogypsum by using magnesium hydroxide. Magnesium hydroxide has a very good neutralizing effect on acid wastewater when used as an acidwastewater neutralizing treatment agent, the pH value of the neutralized wastewater does not exceed 9, and suspended particles in the wastewater can be quickly settled. Magnesium hydroxide is used asa reactant during phosphogypsum pretreatment, plays a good role, and can react with harmful substances in phosphogypsum to form precipitates to be discharged. The method can effectively reduce the cleaning frequency of phosphogypsum, improve the cleaning effect and improve the strength of the cleaned phosphogypsum. A foundation is laid for subsequent production of building gypsum products from phosphogypsum, and economic benefits are brought.
本发明提供了本发明提供一种用氢氧化镁预处理磷石膏的装置及方法，氢氧化镁作为酸性废水中和处理剂时，具有很好的综合酸性废水的作用，中和后的废水PH值不会超过9且能使废水中的悬浮颗粒物很快沉降。氢氧化镁用作磷石膏预处理时的反应剂，很好地发挥其作用，且能和磷石膏中的有害物质反映形成沉淀排出。此方法能有效地减少磷石膏的清洗次数，提升清洗效果以及提高清洗后磷石膏的强度。为后续磷石膏生产建筑石膏制品打下基础，带来经济效益。
Device and method for pretreating phosphogypsum by using magnesium hydroxide
The invention provides a device and a method for pretreating phosphogypsum by using magnesium hydroxide. Magnesium hydroxide has a very good neutralizing effect on acid wastewater when used as an acidwastewater neutralizing treatment agent, the pH value of the neutralized wastewater does not exceed 9, and suspended particles in the wastewater can be quickly settled. Magnesium hydroxide is used asa reactant during phosphogypsum pretreatment, plays a good role, and can react with harmful substances in phosphogypsum to form precipitates to be discharged. The method can effectively reduce the cleaning frequency of phosphogypsum, improve the cleaning effect and improve the strength of the cleaned phosphogypsum. A foundation is laid for subsequent production of building gypsum products from phosphogypsum, and economic benefits are brought.
本发明提供了本发明提供一种用氢氧化镁预处理磷石膏的装置及方法，氢氧化镁作为酸性废水中和处理剂时，具有很好的综合酸性废水的作用，中和后的废水PH值不会超过9且能使废水中的悬浮颗粒物很快沉降。氢氧化镁用作磷石膏预处理时的反应剂，很好地发挥其作用，且能和磷石膏中的有害物质反映形成沉淀排出。此方法能有效地减少磷石膏的清洗次数，提升清洗效果以及提高清洗后磷石膏的强度。为后续磷石膏生产建筑石膏制品打下基础，带来经济效益。
Device and method for pretreating phosphogypsum by using magnesium hydroxide
一种用氢氧化镁预处理磷石膏的装置及方法
XU GANG (Autor:in) / HUANG HUIPING (Autor:in) / LIU DONGMEI (Autor:in) / WU WENLIN (Autor:in) / ZHAO XIANGRUI (Autor:in) / YANG HAOYU (Autor:in) / YU XIA (Autor:in) / YANG GUOZHEN (Autor:in)
10.07.2020
Patent
Elektronische Ressource
Chinesisch
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