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Recovery of silica from sodium silicate solution of calcined boron mud
Alternative TitleRecovery of silica from sodium silicate solution of calcined boron mud
Ning ZhiQiang; Zhai YuChun; Xie HongWei; Song QiuShi; Yu Ka
2016
Source PublicationRARE METALS
ISSN1001-0521
Volume35Issue:2Pages:204-210
AbstractThe 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.
Other AbstractThe 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.
KeywordMAGNESIUM-HYDROXIDE COMPOSITES KINETICS Boron mud Carbonation Recovery Silicon dioxide
Indexed ByCSCD
Language英语
Funding Project[National Natural Science Foundation of China] ; [Fundamental Research Funds for the Central Universities, China]
CSCD IDCSCD:5623481
Citation statistics
Cited Times:2[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/148273
Collection中国科学院金属研究所
Affiliation中国科学院金属研究所
Recommended Citation
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.
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