Abstract
The mineralizing ability of zinc oxide in the clinkerization of black meal used in the shaft kiln process is compared with that of white meal for the rotary kiln, and the properties of the cement produced are discussed. Zinc oxide exhibits superior activity in clinkerization of black meal. Zinc oxide doping lowers the water requirement and prolongs the setting time of the cement. The cement exhibits high early strength but the strength improvement beyond 7 days is poor.
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