Patents Assigned to California Portland Cement Company
  • Multiple fuel burner and usage in rotary kilns
    Patent number: 3989443
    Abstract: A multiple fuel burner assembly, especially suited for use in kilns, includes:A. a forwardly elongated inner duct to deliver pulverized solid fuel to a burning zone beyond the end of the duct,B. multiple pipes spaced about the inner duct and opening generally forwardly to deliver fluid fuel to said zone beyond the ends of said pipes, andC. air delivery structure located outwardly of said inner duct and oriented to deliver air to the fuel delivered from said pipes and inner duct to said zone for combusting said fuel.
    Type: Grant
    Filed: October 10, 1975
    Date of Patent: November 2, 1976
    Assignee: California Portland Cement Company
    Inventor: William C. Campbell