Method and system for pounding brittle material
AssigneeCle
InventorsMaurice Paliard, Jacques Duputs
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Abstract
A method of crushing brittle materials for obtaining a product of great fineness, wherein the raw material is fed to a roll mill providing a product containing agglomerates and carried into a disaggregator-separator, the fine particles being discharged and the coarse particles being recycled, the disaggregation rate being limited in the disaggregator and the invention being applicable to cement clinker and to various mineral substances.
Claims7
A method of fine crushing solid particles of brittle materials, comprising the steps of crushing a brittle raw material in a slow crushing zone under conditions of at least partial build-up of aggregates, said brittle raw material being in the form of starting elementary grains, said aggregates comprising particles having a passing size of a desired fine product and particles greater than said passing size, said crushing being followed by controlled disaggregating of said aggregates in a disaggregation zone and by separating and withdrawing particles having said passing size which constituted the the desired fine product and recycling particles greater than said passing size to the crushing zone, and maintaining the rate of said controlled disaggregating between 10 and 60% in the disaggregation zone, the disaggregating rate being defined by the weight ratio of the amount of particles having said passing size released from said aggregates during said disaggregating to the amount of particles having said passing size present in said aggregates before said disaggregating.
Dependencies are inferred from the claim text.