C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
261/64
C04B 7/24 (2006.01) C04B 7/36 (2006.01) C04B 18/30 (2006.01)
Patent
CA 1302438
ABSTRACT OF THE DISCLOSURE A novel method for manufacturing cement utilizing crushed refuse. The method comprises a first step of preparing a homogeneous powder mixture from a majority of crushed refuse substantially free of metal constituents and a minority of at least one first mineral material containing calcium oxide in the free or combined state. In a second step, the powder mixture is granulated under pressure. A third step comprises heat treating the granules at a temperature between 130°C and 230°C for a length of time sufficient to bring the water content of the granules to between about 0.1 and 1.0% by weight. The third step produces a refuse product. A fourth step comprises mixing the refuse product with a first starting mixture and firing the resulting clinker mixture in a kiln, producing a clinker. In the last step, gypsum is added to the clinker and the resulting cement mixture is crushed.
561346
Clenin Roger-John
Vazquez Fernando Trivino
Ecomat S.a.
Kirby Eades Gale Baker
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