portland cement raw material mi
Portland cementaccounts for more than 95% of allcementproduced. To makePortland cement, clay, shale and limestone is ground to a powder and baked in a kiln. Thebaked mixtureforms clods (clinkers), which are then ground up and mixed with gypsum. Most of theraw materialsare mined in open pits.Michigantraditionally ranks in the five states in terms ofcementproduction.
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