累托石的煅烧处理及表征

Study on Calcination and Characterization of Rectorite

以湖北钟祥公司的累托石为原料进行煅烧处理,以白度及残硫量为指标较系统地考察累托石煅烧的工艺条件,运用XRD、SEM、TG-DTA等手段对累托石进行了表征及热性能分析。结果表明最佳煅烧工艺条件为:原料粒度小于0.050 mm,煅烧温度850℃,升温时间4 h,恒温时间4 h。

Calcination rectorite （CREC） was obtained using the rectorite from Hubei Zhongxiang Mine. And setting the white degree and the residual sulfur content as the indices, the calcination conditions of rectorite were systematically seeked. Then CREC was characterized and thermally analyzed by XRD, SEM and TG- DTA, etc. The results suggested the optimum calcination condition was that the material granularity was less than 0. 050 mm, the calcination temperature was 850 ℃, the rising temperature time was 4 h, the holding temperature time was 4 h.