Potassium chloride in potassium sulfate synthesis processes. Part 2. Potassium sulfate production from waste sulfates.

Some technological solutions of potassium sulfate fertilizer production fro m potassium chloride and sulfate by-products from various processes were di scussed. Attention has been paid to the necessity of waste sulfates disposa l and the difficulties in completion of suggested technological solution, t hat may cause an increase in the chloride-free potassium fertilizer product ion costs.