【摘要】：利用TG-DSC-DTG對(duì)不同品級(jí)鋁礬土進(jìn)行熱分析,研究不同品級(jí)鋁礬土在不同溫度下的均化燒結(jié)情況,利用XRD、SEM對(duì)均化礬土熟料的物相組成和微觀結(jié)構(gòu)進(jìn)行研究。結(jié)果表明:Al2O3含量為89%(S級(jí))、84%(I級(jí))和74%(IIA級(jí))的鋁礬土,其最佳均化燒結(jié)溫度分別為1580℃、1600℃和1650℃,各級(jí)均化礬土熟料在最佳燒結(jié)狀態(tài)下的晶體結(jié)構(gòu)和生長(zhǎng)形態(tài)為:S級(jí)、I級(jí)均化礬土熟料主要為發(fā)育良好的剛玉晶粒,大部分呈長(zhǎng)柱狀,少量呈等軸狀,晶粒間結(jié)合緊密,雜質(zhì)均勻分布在晶界的玻璃相中;IIA級(jí)均化礬土熟料中剛玉相與莫來(lái)石相共存,晶粒發(fā)育良好,莫來(lái)石晶體為長(zhǎng)柱狀。
[Abstract]:The thermal analysis of bauxite of different grade was carried out by TG-DSC-DTG, and the homogenization sintering of bauxite at different temperature was studied. The phase composition and microstructure of bauxite clinker were studied by XRD,SEM. The results show that the optimum homogenizing sintering temperature of bauxite with Al2O3 content of 89% (S grade), 84% (I grade) and 74% (IIA grade) is 1580 鈩，

本文編號(hào)：2403549