Study on Low Temperature Autoclaved Technology of Iron Tailings Based Autoclaved Aerated Concrete
In order to realize the comprehensive utilization of iron tailings and optimize the production cost of iron tailings autoclaved aerated concrete,aiming at the problems of high autoclaved pressure of iron tailings autoclaved aerated concrete and low compressive strength of products,iron tailings are used as the main raw material,combined with industrial production,the effects of additives,waste slurry,cementitious materials and other factors on the properties of products are investigated.The results show that the admix-ture,waste slurry and cementitious materials can significantly improve the performance of iron tailings auto-claved aerated concrete products.By adding admixture,the autoclaved pressure of autoclaved aerated con-crete can be reduced from 1.2 MPa to 0.9 MPa.When the ratio of iron tailings,waste slurry,cement,lime,gypsum and admixture is 50%∶20%∶18%∶6%∶4%∶2%,iron tailings autoclaved aerated concrete products with dry density of 603.59 kg/cm3 and compressive strength of 3.67 MPa can be prepared,which can realize the efficient comprehensive utilization of iron tailings.
万方数据
维普
