作者: Didier Bourbon , Sébastien Devroe
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摘要: The invention relates to a method of grinding mineral material (10) containing at least calcium and metal impurities implemented in an installation (1) comprising mill (2) grain size selection device, called selector device (3), capable separating the into two fractions. comprises steps of: - milled by bed compressing said through mill, obtaining ground product, fine fraction coarse means means, one returns (13) crusher for further step. According invention, subjecting portion sorting metallic inorganic materials. also as such, find particular use producing hydraulic binders such cement.