Optimization on experiment of microwave drying of rare earth carbonate using response surface methodology

被引：0

作者：

Yin S. ^{[1
]}

Lin G. ^{[1
]}

Peng J. ^{[1
]}

Xie F. ^{[1
]}

Li S. ^{[1
]}

Zhang L. ^{[1
]}

机构：

[1] Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming

来源：

Zhang, Libo (libozhang77@163.com) | 2016年 / Editorial Office of Chinese Journal of Rare Metals卷 / 40期

关键词：

Dehydration rate; Microwave heating; Rare earth carbonate; Response surface methodology;

D O I：

10.13373/j.cnki.cjrm.2016.04.009

中图分类号：

学科分类号：

摘要：

The central composite rotatable design (CCRD) of response surface methodology (RSM) was used to study the effect of interaction among three variables, microwave power, drying time and material thickness on the dehydrating absorbed water of rare earth carbonates, and a response surface methodology model using the second-order polynomial was obtained. The results showed that dehydration rate increased with the increase of microwave power and drying time at fixed material thickness, and decreased with the increase of material thickness when other conditions were fixed. The optimal operation conditions of microwave power, drying time and material thickness were 800 W, 12 min and 2 cm, respectively. Under the optimal conditions, the dehydration rate was 97.69%, and the relative error differed by only 1.31% from the predicted value of model (98.88%). Fourier transform infrared spectroscopy (FT-IR) and size analysis indicated that the rare earth carbonate after microwave drying had no adsorbed water, and had the characteristics of small size and uniform distribution. © Editorial Office of Chinese Journal of Rare Metals. All right reserved.

引用

页码：350 / 355

页数：5

共 18 条

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