Self-reducing, cold-bonded pellets

  • US 7,896,963 B2
  • Filed: 09/23/2003
  • Issued: 03/01/2011
  • Est. Priority Date: 09/23/2003
  • Status: Active Grant
First Claim
Patent Images

1. Self-reducing, cold-bonded pellets, comprising, by weight, about 60-79% iron oxide-containing material, a main portion of said material being between about 200 mesh or smaller, about 10-26% carbonaceous reducing agent with a particle size of about 48 mesh or smaller, and about 10-20% finely divided Portland cement clinker as a binder wherein about 90% or more of the total volume of the cement clinker particles measure less than 0.08 mm and the portion of dicalcium silicate contained in the cement clinker is less than about 20% by weight, the cement clinker contains about 50% by weight or more of tricalcium silicate, the cement clinker contains tricalcium silicate and tricalcium aluminate in a ratio from about 5:

  • 1 to 10;

    1, with the total weight of the iron oxide-containing material, carbonaceous reducing agent and cement clinker being 100%.

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