Method of fine and very fine comminution of materials having...

B - Operations – Transporting – 02 – C

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B02C 23/00 (2006.01) B02C 4/02 (2006.01) B02C 19/00 (2006.01) C04B 7/52 (2006.01)

Patent

CA 1111821

ABSTRACT OF THE DISCLOSURE The disclosure describes a method of producing finely and very finely comminuted brittle materials, wherein the particles to be ground are stressed in the form of a bed of bulk material between two practically non-yielding hard surfaces. In a first step a bed of particles to be ground is stressed once by an energy sufficiently high not only to cause comminution but also a distinct agglomeration or briquetting of the fragments by subjecting the bed to compression of at least 500 kg/cm2 (7000 psi). The resulting agglomerates or briquettes are subsequently disintegrated in another step by mechanical stressing.

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