商洛钒尾矿烧制轻质高强陶粒的研究

采用80wt;商洛钒尾矿为主要原料,加入钾长石、粘土为辅助原料,以SiC为发泡剂,制备性能优异的轻质高强陶瓷颗粒.采用单因素变量分析法研究钒尾矿含量、SiC添加量、烧成温度和保温时间对陶粒结构及性能的影响.研究结果表明:随着发泡剂SiC含量的增加、烧成温度的提高和保温时间的延长,陶粒的堆积密度和筒压强度均降低,吸水率均升高.最终加入2wt;SiC为发泡剂,在1125℃下保温30min制得堆积密度631kg/m3,筒压强度9.1MPa,吸水率3.1;的轻质高强陶瓷颗粒.

Research on Preparation of Light-weight and High-intensity Ceramsites with Shangluo Vanadium Tailings

The lightweight high-intensity ceramsites were prepared with 80wt% Shangluo vanadium tailings as main raw materials, adding potassium feldspar and clay .SiC powders are used as foaming agent .The influence of vanadium tailings content , SiC content , sintering temperature and holding time on structure and properties of ceramsites was studied , respectively .The results show that the bulk density and compressive strength of ceramsites are reduced with SiC content increasing , sintering temperature enhancing and holding time extending .The light-weight and high-intensity ceramsites are sintered at 1125℃for 30 min with SiC content of 2wt%.The bulk density of the ceramsites is 631 kg/m3 .The compressive strength is 9.1 MPa, and the water absorption is 3.1%.