球形镍氧化物制备硫酸镍的方法研究

Abstract

Abstract:

The preparation method of high purity nickel sulfate was disclosed basing on the spherical nickel oxide.Firstly,the components of spherical nickel oxide were characterized by the powder of X-ray diffraction and X-ray photoelectron spectro-scopy.The major component was nickel oxide.Then the optimal conditions of leaching nickel oxide into nickel sulfate were established,and the optimal conditions were 1.84 mol/L sulphuric acid,200 ℃,solid-liquid ratio 0.3 g/mL and reaction time 6 h.Finally,high refined nickel sulfate solution with controllable pH value and nickel concentration,could be obtained by re-dissolving of nickel sulfate monohydrate, which was the byproduct obtained at the higher temperature（250 ℃）.

Key words: nickel sulfate, nickel oxide, leaching method

CLC Number:

TQ138.13

Feng Jianhua,Zhou Tong,Li Yijing,Guo Yong,Lu Xiaofeng. Preparation method of nickel sulfate from spherical nickel oxide[J]. Inorganic Chemicals Industry, 2019, 51(3): 53-56.

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成分	质量分数/%	成分	质量分数/%
Ni	77.96	Cu	0.000 8
Pb	0.000 6	Mg	0.020 0
Cr	0.001 3	Fe	0.007 0
Co	0.002 8	Na	0.055 0
Ca	0.003 2	Zn	0.000 8
Cd	0.000 5	Mn	0.013 0

元素	质量浓度/（g·L^-1）	元素	质量浓度/（g·L^-1）
Ni	114.58	Cu	0.000 05
Pb	0.000 03	Mg	0.017
Cr	0.000 39	Fe	0.002 0
Co	0.034	Na	0.000 16
Ca	0.006 6	Zn	0.000 59
Cd	<0.000 01	Mn	0.16

元素	质量浓度/（g·L^-1）	元素	质量浓度/（g·L^-1）
Ni	101.5	Cu	0.000 03
Pb	0.000 01	Mg	0.001 5
Cr	0.000 05	Fe	0.000 2
Co	0.000 85	Na	0.000 11
Ca	0.000 62	Zn	0.000 25
Cd	<0.000 01	Mn	0.000 93

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Preparation method of nickel sulfate from spherical nickel oxide

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