Method and device for fine grinding mineral and non-mineral...

B - Operations – Transporting – 02 – C

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B02C 4/10 (2006.01) B02C 4/02 (2006.01) B02C 4/28 (2006.01)

Patent

CA 2315164

The invention relates to a method and corresponding device for the fine grinding of solid mineral and non-mineral substances, preferably cement raw materials and clinker, by application of moderate to high pressure once or several times followed by disagglomeration of the obtained ground products in the same device. The ground product is extracted by gravimetric feeding in the form of a defined layer from a feeding container, by means of the upper strand, moving in a translatory manner, of an endless plate conveyor which is guided around a drive and deviation tumbler. The ground product is then pre-ground or subjected to other processing pretreatment depending on requirements, for example dried or wetted, and then ground under pressure by an elastically adjusted grinding roller, after which it is disagglomerated in the same device by a high-speed hammering machine.

L'invention concerne un procédé et le dispositif associé permettant d'abord le broyage fin de substances solides minérales et non minérales, de préférence, de matières premières de ciment et de clinker, par application d'une ou de plusieurs pression(s) moyennes à élevées, puis la désagglomération consécutive du produit moulu ainsi obtenu dans le même dispositif. Le produit moulu est extrait d'un contenant de chargement par dosage par gravimétrie, sous forme de couche définie, par le brin supérieur, à déplacement translatoire, d'une bande à palettes continue guidée via un tambour d'entraînement et de déviation. En fonction des exigences, le produit moulu est ensuite prébroyé ou prétraité selon des procédés industriels, par exemple, séché ou humidifié pour ensuite être broyé sous la pression d'un rouleau de broyage réglé de façon élastique et enfin être désaggloméré dans le même dispositif par un mécanisme à percussion rapide.

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