Method of classifying and comminuting a gypsum ore or the like

Details Method of classifying and comminuting a gypsum ore or the like Method of classifying and comminuting a gypsum ore or the like

B - Operations, Transporting

02

C

241/142

B02C 23/12 (2006.01) B02C 13/18 (2006.01) B02C 23/14 (2006.01)

Patent

CA 1178938

METHOD OF CLASSIFYING AND COMMINUTING A GYPSUM ORE OR THE LIKE ABSTRACT OF THE DISCLOSURE A method is disclosed or separating a relatively soft component from a relatively hard component of mineral ore and then comminuting the softer component. The separa- tion is performed by impact crushing the ore to reduce the softer component to particulate material of a smaller dimension than that of the harder component after which the components are separated by screening. The comminution is performed by further impact crushing the softer component to further reduce same and separating sufficiently small particles. Relatively large particles are also removed and the remainder of the softer component is recycled through the comminution process. The method is primarily applicable to the separation of chert from gypsum and comminuting the gypsum in the processing of gypsum ore.

379633

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