Cement, How It Is Produced - Mine Engineer.Com
From there, the ¾ inch ore is typically reduced to a powder in a large ball mill. Sometimes, the raw materials are wet ground in the ball mill by adding water, and form a slurry. In either event, wet or dry, the ground powder is then blended, using the "Chemist's Secret Mixture", which can be a closely guarded "recipe", and are then ...