Patents Assigned to I.S.O.
  • Process for the manufacture of calcium chloride
    Patent number: 4299809
    Abstract: A process for the production of calcium chloride by the reaction of hydrochloric acid with calcium carbonate in the upper sealed portion of a reactor bordered on one side by a filtration sieve. The process comprises reacting the hydrochloric acid with the calcium carbonate to form carbon dioxide and calcium chloride solution, and pressuring the solution of calcium chloride by means of the carbon dioxide across the sieve and towards an outlet of the reactor.
    Type: Grant
    Filed: January 14, 1980
    Date of Patent: November 10, 1981
    Assignee: I.S.O.
    Inventors: Gerard Teyssier, Marcel Lepant