Experimental study by onlinemeasurement of the precipitation of nickel hydroxide: Effects of operating conditions

doi:10.1016/j.cjche.2014.04.004

Chinese Journal of Chemical Engineering ›› 2015, Vol. 23 ›› Issue (5): 860-867.DOI: 10.1016/j.cjche.2014.04.004

Experimental study by onlinemeasurement of the precipitation of nickel hydroxide: Effects of operating conditions

Weiwei E¹, Jingcai Cheng^1,2, Chao Yang^1,2, Zaisha Mao¹

1 Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
2 Jiangsu Marine Resources Development Research Institute, Lianyungang 222005, China

收稿日期:2014-01-20 修回日期:2014-04-08 出版日期:2015-05-28 发布日期:2015-06-26
通讯作者: Jingcai Cheng, Chao Yang
基金资助:
Supported by the State Key Development Program for Basic Research of China (2013CB632601), the National High Technology Research and Development Program of China (2011AA060704), the National Natural Science Foundation of China (21476236, 91434126) and the National Science Fund for Distinguished Young Scholars (21025627).

Experimental study by onlinemeasurement of the precipitation of nickel hydroxide: Effects of operating conditions

Weiwei E¹, Jingcai Cheng^1,2, Chao Yang^1,2, Zaisha Mao¹

1 Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
2 Jiangsu Marine Resources Development Research Institute, Lianyungang 222005, China

Received:2014-01-20 Revised:2014-04-08 Online:2015-05-28 Published:2015-06-26
Contact: Jingcai Cheng, Chao Yang
Supported by:
Supported by the State Key Development Program for Basic Research of China (2013CB632601), the National High Technology Research and Development Program of China (2011AA060704), the National Natural Science Foundation of China (21476236, 91434126) and the National Science Fund for Distinguished Young Scholars (21025627).

摘要/Abstract

摘要： The objective of this work is using the online measurementmethod to study the process of precipitation of nickel hydroxide in a single-feed semi-batch stirred reactor with an internal diameter of D = 240 mm. The effects of impeller speed, impeller type, impeller diameter and feed location on the mean particle size d₄₃ and particle size distribution (PSD) were investigated. d₄₃ and PSD were measured online using a Malvern Insitec Liquid Process Sizer every 20 s. It was found that d₄₃ varied between 13 μm and 26 μm under different operating conditions, and it decreased with increasing impeller diameter.When feeding at the off-bottomdistance of D/2 under lower impeller speeds, d₄₃ was significantly smaller than that at D/3. PSDs were slightly influenced by operating conditions.

关键词: Nickel hydroxide, Precipitation, Particle size distribution, Online measurement, Stirred tank, Mixing

Abstract: The objective of this work is using the online measurementmethod to study the process of precipitation of nickel hydroxide in a single-feed semi-batch stirred reactor with an internal diameter of D = 240 mm. The effects of impeller speed, impeller type, impeller diameter and feed location on the mean particle size d₄₃ and particle size distribution (PSD) were investigated. d₄₃ and PSD were measured online using a Malvern Insitec Liquid Process Sizer every 20 s. It was found that d₄₃ varied between 13 μm and 26 μm under different operating conditions, and it decreased with increasing impeller diameter.When feeding at the off-bottomdistance of D/2 under lower impeller speeds, d₄₃ was significantly smaller than that at D/3. PSDs were slightly influenced by operating conditions.

Key words: Nickel hydroxide, Precipitation, Particle size distribution, Online measurement, Stirred tank, Mixing

Weiwei E, Jingcai Cheng, Chao Yang, Zaisha Mao. Experimental study by onlinemeasurement of the precipitation of nickel hydroxide: Effects of operating conditions[J]. Chinese Journal of Chemical Engineering, 2015, 23(5): 860-867.

Weiwei E, Jingcai Cheng, Chao Yang, Zaisha Mao. Experimental study by onlinemeasurement of the precipitation of nickel hydroxide: Effects of operating conditions[J]. Chin.J.Chem.Eng., 2015, 23(5): 860-867.

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Experimental study by onlinemeasurement of the precipitation of nickel hydroxide: Effects of operating conditions

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