Coupled process of reaction and solvent extraction: I. The reaction between CO2 and SrCl2 coupled with solvent extraction of HCl

In order to ensure the continual reaction between CO2 and SrCl2 to produce SrCO3, it is necessary to neutralize produced HCl or to remove it to another phase. Coupling the reaction with solvent extraction is a way to lower the acidity of the aqueous solution and to allow the reaction to proceed continually. Based on this coupled process, a new flow sheet for producing strontium carbonate from celestite is proposed. The factors influencing equilibrium of the coupled process of strontium carbonate production with solvent extraction have been studied.