Application and Development of Gas Suspension Calcination in Rare Earth Carbonate

被引：0

作者：

Tian H. ^{[1
,2
]}

Cui J. ^{[1
]}

Hao X. ^{[2
]}

Wang Z. ^{[1
]}

Xu M. ^{[1
]}

Zhang W. ^{[3
]}

机构：

[1] State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earth, Baotou

[2] Materials and Metallurgy School, Inner Mongolia University of Science and Technology, Baotou

[3] Baotou Huamei Rare Earth High-tech Company Limited, Baotou

来源：

Zhongguo Xitu Xuebao/Journal of the Chinese Rare Earth Society | 2021年 / 39卷 / 04期

关键词：

Characterization; Gas suspension calcination; Lanthanum carbonate; Lanthanum oxide; Qualified products;

D O I：

10.11785/S1000-4343.20210412

中图分类号：

学科分类号：

摘要：

Gas suspension calcination was introduced into the rare earth industry to roast lanthanum carbonate. Thermal-decomposition process, crystal phase structure, powder particle size, morphology features, specific surface area, density and resting angle were studied by means of differential thermal/thermo-gravimetric analyzer (TG-DTA), X-ray diffractometer (XRD), laser particle size meter, scanning electron microscope (SEM) and intelligent powder characteristic tester. The actual production indexes, such as energy consumption and product yield, were monitored in the continuous production process and comprehensively compared with the traditional static roasting process. The results showed that the qualified lanthanum oxide products can be produced by gas suspension calcination. The product has the characteristics of perfect uniformity, good fluidity and large specific surface area. The device could be widely used in the rare earth industry because of the low energy consumption per unit product. © 2021, Editorial Office of Journal of the Chinese Society of Rare Earths. All right reserved.

引用

页码：616 / 623

页数：7

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