Theoretical Calculation of Dissolution Equilibrium for Cerussite in Pulp Solution

Abstract:

The dissolution equilibrium of cerussite within the entire pH range was theoretically calculated, which was based on coordination chemistry, thermodynamics and the mass balance principle of Pb²⁺ and CO₃^2- in pulp solution. The calculation result showed that the total lead concentration (C_PbT) of cerussite decreased significantly with increasing pH below 6 or so; however, at pH of about 10, a reverse trend of C_PbT may be observed. Within the pH range from 6 to 10, the C_PbT of cerussite remained close and presents a minimum value of around 10^-4 mol/L. This paper may provide a theoretical basis for the dissolution process of cerussite and its conditioning stage before benefication by adopting flotation method.

• Periodical: Advanced Materials Research (Volumes 881-883)
• Pages: 1679-1682
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.881-883.1679
• Online since: January 2014
• Authors: Qi Cheng Feng, Shu Ming Wen*, Qin Bo Cao, Xv Bai, Wen Juan Zhao
• Keywords: Cerussite, Dissolution Equilibrium, Flotation, Pulp Solution, Theoretical Calculation

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