Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Steel slag cementing material as well as preparation method and application thereof
The invention belongs to the technical field of steel slag recycling and reusing, and particularly discloses a steel slag cementing material and a preparation method and application thereof. The preparation method comprises the steps that a steel slag raw material is crushed to 0.05-4.0 mm and then placed in grinding equipment, a liquid additive and a crystal form control agent are added and mixed to be uniform, and when the uniformly-mixed steel slag is ground till the specific surface area is not smaller than 200 m<2>/kg, wet flue gas containing carbon dioxide is introduced, and grinding is continued for 1-60 minutes to obtain the steel slag cementing material. Compared with the prior art, carbon dioxide is introduced when the steel slag is ground into a semi-finished product, the reaction speed of the steel slag can be increased, and the volume stability of the steel slag is improved; and meanwhile, the crystal form control agent is added into the steel slag to control the crystal form and size of sodium carbonate, so that nano calcium carbonate is formed, and the hydration activity of the steel slag is improved in the hydration process. The method can promote large-scale application of the steel slag in the field of building materials, and has great social, economic and environmental benefits.
本发明属于钢渣回收再利用技术领域，具体公开了一种钢渣胶凝材料及制备方法和应用，将钢渣原材料破碎至0.05‑4.0mm后置于粉磨设备中，添加液体外加剂和晶型控制剂并混合均匀，将混合均匀的钢渣粉磨至比表面积不小于200m2/kg时，通入含有二氧化碳的湿烟气继续粉磨1‑60min，即制得钢渣胶凝材料。与现有技术相比，本发明将钢渣粉磨至半成品时通入二氧化碳，可提高钢渣的反应速度，改善钢渣的体积安定性；同时在钢渣中加入了晶型控制剂，以控制碳酸钠的晶型和尺寸，使其形成纳米碳酸钙，在水化过程中提高钢渣的水化活性；本发明能够促进钢渣在建筑材料领域的大规模应用，具有重大的社会、经济和环境效益。
Steel slag cementing material as well as preparation method and application thereof
The invention belongs to the technical field of steel slag recycling and reusing, and particularly discloses a steel slag cementing material and a preparation method and application thereof. The preparation method comprises the steps that a steel slag raw material is crushed to 0.05-4.0 mm and then placed in grinding equipment, a liquid additive and a crystal form control agent are added and mixed to be uniform, and when the uniformly-mixed steel slag is ground till the specific surface area is not smaller than 200 m<2>/kg, wet flue gas containing carbon dioxide is introduced, and grinding is continued for 1-60 minutes to obtain the steel slag cementing material. Compared with the prior art, carbon dioxide is introduced when the steel slag is ground into a semi-finished product, the reaction speed of the steel slag can be increased, and the volume stability of the steel slag is improved; and meanwhile, the crystal form control agent is added into the steel slag to control the crystal form and size of sodium carbonate, so that nano calcium carbonate is formed, and the hydration activity of the steel slag is improved in the hydration process. The method can promote large-scale application of the steel slag in the field of building materials, and has great social, economic and environmental benefits.
本发明属于钢渣回收再利用技术领域，具体公开了一种钢渣胶凝材料及制备方法和应用，将钢渣原材料破碎至0.05‑4.0mm后置于粉磨设备中，添加液体外加剂和晶型控制剂并混合均匀，将混合均匀的钢渣粉磨至比表面积不小于200m2/kg时，通入含有二氧化碳的湿烟气继续粉磨1‑60min，即制得钢渣胶凝材料。与现有技术相比，本发明将钢渣粉磨至半成品时通入二氧化碳，可提高钢渣的反应速度，改善钢渣的体积安定性；同时在钢渣中加入了晶型控制剂，以控制碳酸钠的晶型和尺寸，使其形成纳米碳酸钙，在水化过程中提高钢渣的水化活性；本发明能够促进钢渣在建筑材料领域的大规模应用，具有重大的社会、经济和环境效益。
Steel slag cementing material as well as preparation method and application thereof
一种钢渣胶凝材料及制备方法和应用
FANG YANFENG (Autor:in) / YAO SHUHONG (Autor:in) / WANG QINGHE (Autor:in) / ZHANG YUZHUO (Autor:in) / ZHANG LIMIN (Autor:in) / WANG SONGNING (Autor:in)
28.01.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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