Recovery of silica from sodium silicate solution of calcined boron mud

IMR OpenIR

	Recovery of silica from sodium silicate solution of calcined boron mud
其他题名	Recovery of silica from sodium silicate solution of calcined boron mud
	Ning ZhiQiang; Zhai YuChun; Xie HongWei; Song QiuShi; Yu Ka
	2016
发表期刊	RARE METALS
ISSN	1001-0521
卷号	35 期号:2 页码:204-210
摘要	The effect of several parameters on the recovery of silicon dioxide from calcined boron mud (CBM) such as stirring speed, temperature, sodium silicate concentration, and carbonation time was studied. The recovery of silicon dioxide is 88 % when the stirring speed is 450 r center dot min(-1), temperature is 60 A degrees C, sodium silicate concentration is 1 mol center dot L-1, and the carbonation time is 6 h. The effect of carbonation time on the recovery of silicon dioxide is divided into three kinetic regimes, and the carbonation process of sodium silicate solution follows a second-order reaction based on the double-film theory model. The apparent rate constant of the three kinetic regimes is 0.064, 3.178, and 1.130 L center dot h center dot mol(-1), respectively. The amorphous SiO2 products obtained by carbonating the purified solution have 99.6 % purity and are spherical with diameters of about 100 nm.
其他摘要	The effect of several parameters on the recovery of silicon dioxide from calcined boron mud (CBM) such as stirring speed, temperature, sodium silicate concentration, and carbonation time was studied. The recovery of silicon dioxide is 88 % when the stirring speed is 450 r·min~(-1), temperature is 60 °C, sodium silicate concentration is 1 mol·L~(-1), and the carbonation time is 6 h. The effect of carbonation time on the recovery of silicon dioxide is divided into three kinetic regimes, and the carbonation process of sodium silicate solution follows a second-order reaction based on the double-film theory model. The apparent rate constant of the three kinetic regimes is 0.064, 3.178, and 1.130 L·h·mol~(-1), respectively. The amorphous SiO_2 products obtained by carbonating the purified solution have 99.6 % purity and are spherical with diameters of about 100 nm.
关键词	MAGNESIUM-HYDROXIDE COMPOSITES KINETICS Boron mud Carbonation Recovery Silicon dioxide
收录类别	CSCD
语种	英语
资助项目	[National Natural Science Foundation of China] ; [Fundamental Research Funds for the Central Universities, China]
CSCD记录号	CSCD:5623481
引用统计	被引频次：3[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/148273
专题	中国科学院金属研究所
作者单位	中国科学院金属研究所
推荐引用方式 GB/T 7714	Ning ZhiQiang,Zhai YuChun,Xie HongWei,et al. Recovery of silica from sodium silicate solution of calcined boron mud[J]. RARE METALS,2016,35(2):204-210.
APA	Ning ZhiQiang,Zhai YuChun,Xie HongWei,Song QiuShi,&Yu Ka.(2016).Recovery of silica from sodium silicate solution of calcined boron mud.RARE METALS,35(2),204-210.
MLA	Ning ZhiQiang,et al."Recovery of silica from sodium silicate solution of calcined boron mud".RARE METALS 35.2(2016):204-210.