×

Method of removing heavy metals from silicate sources during silicate manufacturing

  • US 7,201,885 B1
  • Filed: 11/17/2005
  • Issued: 04/10/2007
  • Est. Priority Date: 11/17/2005
  • Status: Active Grant
First Claim
Patent Images

1. A method of producing a metal silicate material comprising the steps of:

  • a) providing a silicon dioxide source;

    b) mixing said silicon dioxide source with an acid and water in order to form a slurry thereof;

    c) introducing a calcium phosphate material selected from the group consisting of hydroxyapatite, dicalcium phosphate, tricalcium phosphate, and any mixtures thereof, within said slurry of step “

    b”

    ;

    d) allowing said resultant slurry of step “

    c”

    to form a metal silicate; and

    e) removing any resultant insoluble heavy metal complexes and/or salts from said resultant metal silicate solution.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×