METHOD OF PRODUCING MODIFIED SODIUM CARBONATE CRYSTALS FOR THE PRODUCTION OF SODIUM BICARBONATE

摘要

An improved method of purifying sodium carbonate from a natural source whereby a dissolved sodium carbonate product is treated with a cationic compound, such as a quaternary amine, to react with carbon-containing contaminants and filtering the product. The filtered modified sodium carbonate solution is then crystallized and dried. The modified sodium carbonate has a greater reactivity or uptake of carbon dioxide for the manufacture of sodium bicarbonate than conventional sodium carbonates.