Regeneration of HCl and Production of Saleable Gypsum by Reaction of Spent CaC12 Leach Solutions with H2SO4
- Organization:
- Canadian Institute of Mining, Metallurgy and Petroleum
- Pages:
- 15
- File Size:
- 2323 KB
- Publication Date:
- Jan 1, 2004
Abstract
One critical issue in chloride hydrometallurgy is the regeneration of the lixiviant HCl that is currently achieved by pyrohydrolysis. In this paper, a low temperature HCl regeneration process was investigated which regenerates HCl and produces saleable gypsum. This process promises to reduce the generation of wastes by the reaction of spent calcium chloride leach liquors with sulfuric acid solution at low temperature. Experiments were performed to determine the optimum conditions of the reaction in terms of temperature, reagent concentrations, rate of reagent addition, mixing and seeding/recycling to produce marketable gypsum and HCl with practical strength.
Citation
APA: (2004) Regeneration of HCl and Production of Saleable Gypsum by Reaction of Spent CaC12 Leach Solutions with H2SO4
MLA: Regeneration of HCl and Production of Saleable Gypsum by Reaction of Spent CaC12 Leach Solutions with H2SO4. Canadian Institute of Mining, Metallurgy and Petroleum, 2004.