Patents Assigned to Nakayama Steel Works, Limited
  • Method for manufacturing crushed sands from blast furnace water granulated slags
    Patent number: 4268295
    Abstract: Apparatus and method for manufacturing crushed sands from blast furnace melted slags including maintaining molten blast furnace melted slags out of contact with water while cooling the molten slags to a temperature between 850.degree. C. to 1300.degree. C. and then rapidly cooling the cooled slags with water thereby producing coarse grain hard quality water processed slags.
    Type: Grant
    Filed: July 6, 1979
    Date of Patent: May 19, 1981
    Assignee: Nakayama Steel Works, Limited
    Inventors: Katsuji Yamamoto, Yuichiro Iwasaki, Akira Adachi, Toshiro Kawata, Keisuke Nagano, Seiichi Fujita, Mikio Harada