Patents Assigned to Hamada Heavy Industries Co., Ltd.
  • Treatment of blast furnace slag
    Patent number: 3938975
    Abstract: A method for treating blast furnace slag comprising cooling and solidifying the slag discharged from the blast furnace with an aqueous solution containing not less than 0.003% ferrous sulfate and/or ferrous chloride.
    Type: Grant
    Filed: August 16, 1974
    Date of Patent: February 17, 1976
    Assignees: Nippon Steel Corporation, Hamada Heavy Industries Co., Ltd.
    Inventor: Takeshi Nagata