Engel
Engel : A process for making potassium carbonate from potassium chloride obtained from the salt deposits at Stassfurt, Germany. The basis of the process is the formation of the sparingly soluble double salt MgKH(CO3)2+4H2O when carbon dioxide is passed into a suspension of magnesium carbonate in aqueous potassium chloride: 3MgCO3 + 2KCl + CO2 + 5H2O + 2MgKH(CO3)2+4H2O + MgCl2. The double salt is decomposed by hot water and magnesia, forming potassium carbonate and insoluble hydrated magnesium carbonate: 2MgKH(CO3)2+4H2O + MgO + 3MgCO3+3H2O + K2CO3. (Check source for accuracy of chemical formula)
No records Found