Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention belongs to the technical field of building materials, relates to resource utilization of industrial solid wastes, and particularly discloses an excitation modification method of phosphorus II type anhydrite. According to the invention, phosphogypsum is used as a raw material, and the activity of II-type anhydrite is excited and modified through calcination, ball milling activation and combined excitation of an alkali metal salt activator and a surfactant. According to the method, the temperature is raised to 800 DEG C for 2 hours along with a hearth during calcination, the temperature is kept for 0.5-2 hours, the mechanical activation ball milling time is 1-5 minutes, so that a certain specific surface area is achieved, and an alkali metal salt exciting agent is one or more of potassium sulfate, aluminum sulfate, aluminum potassium sulfate dodecahydrate, sodium chloride, sodium nitrate and sodium oxalate. The surfactant is one or more of sodium lignin sulfonate, calcium lignin sulfonate, sodium dodecyl benzene sulfonate and melamine. The mechanical property of the excited and modified II-type anhydrous gypsum is remarkably improved, downstream products of the anhydrous gypsum can be better produced, and the II-type anhydrous gypsum is widely applied to the field of building materials and has high innovativeness and economic benefits.
本发明属于建筑材料技术领域并涉及工业固废资源化利用，具体公开了一种磷Ⅱ型无水石膏的激发改性方法。本发明以磷石膏为原料，通过煅烧、球磨活化并结合碱金属盐激发剂、表面活性剂联合激发对Ⅱ型无水石膏的活性进行激发改性。本发明中煅烧随炉膛升温2h至800℃保温0.5～2h，机械活化球磨时间为1～5min使其达到一定比表面积，所用碱金属盐激发剂为硫酸钾、硫酸铝、十二水硫酸铝钾、氯化钠、硝酸钠和草酸钠其中的一种或几种。表面活性剂为木质素磺酸钠、木质素磺酸钙、十二烷基苯磺酸钠、三聚氰胺其中的一种或几种。本发明激发改性后的Ⅱ型无水石膏力学性能显著提高，能更好的生产无水石膏下游产品，广泛运用于建材领域，具有较高创新性和经济效益。
The invention belongs to the technical field of building materials, relates to resource utilization of industrial solid wastes, and particularly discloses an excitation modification method of phosphorus II type anhydrite. According to the invention, phosphogypsum is used as a raw material, and the activity of II-type anhydrite is excited and modified through calcination, ball milling activation and combined excitation of an alkali metal salt activator and a surfactant. According to the method, the temperature is raised to 800 DEG C for 2 hours along with a hearth during calcination, the temperature is kept for 0.5-2 hours, the mechanical activation ball milling time is 1-5 minutes, so that a certain specific surface area is achieved, and an alkali metal salt exciting agent is one or more of potassium sulfate, aluminum sulfate, aluminum potassium sulfate dodecahydrate, sodium chloride, sodium nitrate and sodium oxalate. The surfactant is one or more of sodium lignin sulfonate, calcium lignin sulfonate, sodium dodecyl benzene sulfonate and melamine. The mechanical property of the excited and modified II-type anhydrous gypsum is remarkably improved, downstream products of the anhydrous gypsum can be better produced, and the II-type anhydrous gypsum is widely applied to the field of building materials and has high innovativeness and economic benefits.
本发明属于建筑材料技术领域并涉及工业固废资源化利用，具体公开了一种磷Ⅱ型无水石膏的激发改性方法。本发明以磷石膏为原料，通过煅烧、球磨活化并结合碱金属盐激发剂、表面活性剂联合激发对Ⅱ型无水石膏的活性进行激发改性。本发明中煅烧随炉膛升温2h至800℃保温0.5～2h，机械活化球磨时间为1～5min使其达到一定比表面积，所用碱金属盐激发剂为硫酸钾、硫酸铝、十二水硫酸铝钾、氯化钠、硝酸钠和草酸钠其中的一种或几种。表面活性剂为木质素磺酸钠、木质素磺酸钙、十二烷基苯磺酸钠、三聚氰胺其中的一种或几种。本发明激发改性后的Ⅱ型无水石膏力学性能显著提高，能更好的生产无水石膏下游产品，广泛运用于建材领域，具有较高创新性和经济效益。
Combined excitation modification method of phosphorus type II anhydrite
一种磷Ⅱ型无水石膏的联合激发改性方法
22.08.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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