Purification of Nickel Sulfate by Batch Cooling Crystallization

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

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Cooling crystallization was successfully carried out in a batch cooling crystallizer from impure acidic solutions to recover nickel as nickel sulfate salt with three different cooling rates. The compositions of the solutions included impurities of sodium, magnesium, chloride, and sulfuric acid to mimic industrial nickel electrowinning process solutions. The results show that NiSO 4 ·6H 2 O mainly crystallized, and its solubility and purity decreased with the increase in the mass ratio of chloride to sulfate. Cooling rates did not have a significant influence on crystal purity; however, it did affect the filter cake moisture; lower moisture can be obtained with a lower cooling rate. The sequence of impurity removal efficiency from high to low was Cl > Na > Mg.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut1475-1480
Sivumäärä6
JulkaisuChemical Engineering and Technology
Vuosikerta42
Numero7
TilaJulkaistu - 1 heinäkuuta 2019
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu
TapahtumaInternational Workshop on Industrial Crystallization - University of Rouen Normandy , Rouen, Ranska
Kesto: 5 syyskuuta 20187 syyskuuta 2018
Konferenssinumero: 25
https://labsms.univ-rouen.fr/en/content/biwic2018

ID: 32752757