Abstract: A process for producing manganese dioxide and zinc metal comprising the steps of:(1) reacting a mixture of zinc oxide and manganese oxide with an aqueous chloric acid solution wherein the chloric acid is in molar excess of the manganese oxide in a reaction zone to form a reaction mixture in the zone comprising chlorine gas, a solid phase containing manganese dioxide, and a liquid phase containing zinc oxide, chloric acid and water; the concentration of chloric acid in the liquid phase is greater than about 1% by weight of the liquid phase upon leaving the reaction zone;(2) separating the chlorine gas from the solid phase and the liquid phase;(3) separating the solid phase containing manganese dioxide from the liquid phase containing zinc ions, chlorate ions, chloric acid, and water thereby forming a separated solid phase and a separated liquid phase;(4) subjecting the separated liquid phase to electrolysis in an electrochemical cell, thereby producing zinc metal at the cathode and oxygen at the anode;(5) remo

Abstract: A process for producing manganese dioxide comprising the steps of:(1) reacting manganese oxide with a molar excess of an aqueous chloric acid solution in a reaction zone to form a reaction mixture in said zone comprising chlorine gas, a solid phase containing manganese dioxide, and a liquid phase containing chloric acid and water; the concentration of chloric acid in said liquid phase is greater than about 5% by weight of said liquid phase upon leaving the reaction zone;(2) separating said chlorine gas from said solid phase and said liquid phase;(3) separating said solid phase containing manganese dioxide from liquid phase containing chloric acid and water;(4) removing water from said separated liquid phase to concentrate said chloric acid in said separated liquid phase; and(5) returning said separated and concentrated liquid phase back to said reaction zone for further reaction with manganese oxide.

Abstract: A process for producing a chloroisocyanuric acid compound which comprises reacting cyanuric acid with a chlorinating agent consisting of an aqueous solution of hypochlorous acid substantially free of ionic impurities having a pH of less than about 2. The process produces chloroisocyanuric acid compounds with reduced volumes of effluent solutions and significantly reduced amounts of gas released during operation. The novel process for producing chloroisocyanuric acid compounds can employ solid forms of cyanuric acid as a reactant.