TITLE:
Model for Prediction of the Concentration of Extracted Tin during Leaching of Cassiterite in Potassium Hydroxide Solution
AUTHORS:
Onyedika Gerald, Ugwu Priscilla, Ogwuegbu Martin, Ejike Emmanuel, Nwoye Chukwuka, Jiann-Yang Hwang
KEYWORDS:
Model; Tin; Potassium Hydroxide; Cassiterite; Leaching
JOURNAL NAME:
Journal of Minerals and Materials Characterization and Engineering,
Vol.11 No.7,
July
25,
2012
ABSTRACT: Model for prediction of the concentration of tin extracted during potassium hydroxide leaching of cassiterite has been derived. The model: A = Nt1.53, indicates that the concentration tin extracted is dependent on the residence time. It was found that the validity of the model is rooted in the expression Log A = Log (Nt1.53). Tin extraction per unit time as obtained from experiment and derived model are 2.6666 and 2.6268 mg/min respectively. The maximum deviation of the model-predicted concentration of dissolved tin from the corresponding concentration obtained from the experiment was found to be less than 8%, which is quite within the acceptable deviation limit of experimental results and hence, impacting about 92% confidence coefficient on the model.