硅酸盐通报2017，Vol.36Issue(12)：4284-4290,4301,8.
利用低品位铝矾土和铸造废砂制备高贝利特硫铝酸盐水泥的研究
Preparation of High Belite Sulphoaluminate Cement by Low Grade Bauxite and Foundry Waste Sand
摘要
Abstract
The calcination conditions of high belite sulphoaluminate cement (HBSC) were studied by the design orthogonal test method , which was prepared by raw materials include low quality bauxite , foundry waste sand , limestone and gypsum . Thermochemical changes in raw materials , the structure and morphology of clinker and hydration products were analyzed by means of simultaneous DSC -TG apparatus, scanning electron microscopy and X-ray diffraction.It can be preliminarily determined the clinker calcining temperature range from 1250℃to 1360℃, the main mineral composition of the cement clinker as belite and anhydrous calcium sulphoaluminate . Using K value method with X-ray in quantitative of clinker phases , the composition of the clinkers are approximately the same as the theoretical calculation.The hydration products of HBSC are mainly AFt , C-S-H gel, AFm, etc. Experimental results show that:the optimum calcined temperature is 1300 ℃, soaking time is 90 min, quick cooling .The initial setting time of HBSC was 30 min, the final setting time just 40 min.The strength of cement pastes can be reached 65.4 MPa at 28 d.Compared to sulphoaluminate cement 42.5, the early strength of both was close to , but the 28 d strength was 10％higher than the latter .关键词
高贝利特硫铝酸盐水泥/煅烧制度/矿物组成/K值法/抗压强度Key words
high belite sulphoaluminate cement/calcination processes/mineral composition/K value method/compressive strength分类
化学化工引用本文复制引用
谭俊华,史熙亮,朱开金,赵彦亮,彭军辉..利用低品位铝矾土和铸造废砂制备高贝利特硫铝酸盐水泥的研究[J].硅酸盐通报,2017,36(12):4284-4290,4301,8.基金项目
山西省重点学科材料科学与工程资助项目 （）
