Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Ammonia extraction desulfurized gypsum and treatment and utilization method thereof
The invention discloses ammonia extraction desulfurized gypsum and a treatment and utilization method thereof. The ammonia extraction desulfurized gypsum is solid waste generated when washing waste liquid is treated and recycled when a nickel-cobalt-manganese (NCM) ternary material precursor is prepared by using a transition metal (nickel-cobalt-manganese) salt mixed solution as a raw material, using an ammonia water solution as a complexing agent and using alkali liquor to control pH to achieve a co-precipitation reaction. The ammonia extraction desulfurized gypsum is used as a cement gypsum retarder, and the mixing amount of the ammonia extraction desulfurized gypsum in cement is determined according to the content of a flocculating agent, so that the content of the flocculating agent in the cement is controlled to be less than or equal to 0.01%. According to the invention, a large amount of industrial solid waste ammonia extraction desulfurized gypsum can be used as the gypsum retarder required by cement production, and no adverse effect is caused on cement strength.
本发明公开了一种提氨脱硫石膏及其处置利用方法，所述的提氨脱硫石膏是以过渡金属（镍钴锰）盐混合液为原料，以氨水溶液为络合剂，以碱液控制pH来实现共沉淀反应制备镍钴锰（NCM）三元材料前驱体时处理回收洗涤废液时产生的固体废弃物，将其作为水泥石膏缓凝剂，提氨脱硫石膏在水泥中掺量依据其絮凝剂含量而定，以控制水泥中絮凝剂含量≤0.01%。本发明可大量利用工业固废提氨脱硫石膏作水泥生产所需的石膏缓凝剂使用，且不对水泥强度造成不利影响。
Ammonia extraction desulfurized gypsum and treatment and utilization method thereof
The invention discloses ammonia extraction desulfurized gypsum and a treatment and utilization method thereof. The ammonia extraction desulfurized gypsum is solid waste generated when washing waste liquid is treated and recycled when a nickel-cobalt-manganese (NCM) ternary material precursor is prepared by using a transition metal (nickel-cobalt-manganese) salt mixed solution as a raw material, using an ammonia water solution as a complexing agent and using alkali liquor to control pH to achieve a co-precipitation reaction. The ammonia extraction desulfurized gypsum is used as a cement gypsum retarder, and the mixing amount of the ammonia extraction desulfurized gypsum in cement is determined according to the content of a flocculating agent, so that the content of the flocculating agent in the cement is controlled to be less than or equal to 0.01%. According to the invention, a large amount of industrial solid waste ammonia extraction desulfurized gypsum can be used as the gypsum retarder required by cement production, and no adverse effect is caused on cement strength.
本发明公开了一种提氨脱硫石膏及其处置利用方法，所述的提氨脱硫石膏是以过渡金属（镍钴锰）盐混合液为原料，以氨水溶液为络合剂，以碱液控制pH来实现共沉淀反应制备镍钴锰（NCM）三元材料前驱体时处理回收洗涤废液时产生的固体废弃物，将其作为水泥石膏缓凝剂，提氨脱硫石膏在水泥中掺量依据其絮凝剂含量而定，以控制水泥中絮凝剂含量≤0.01%。本发明可大量利用工业固废提氨脱硫石膏作水泥生产所需的石膏缓凝剂使用，且不对水泥强度造成不利影响。
Ammonia extraction desulfurized gypsum and treatment and utilization method thereof
一种提氨脱硫石膏及其处置利用方法
XIANG CONGYANG (Autor:in) / HUANG KAI (Autor:in) / ZHENG ZHILONG (Autor:in) / WU ANRAN (Autor:in)
09.07.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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