$Freeze grinding of cohesive granulate in controlled stages - with recycling of coarser fraction to feed hopper$

Freeze grinding of cohesive granulate in controlled stages - with recycling of coarser fraction to feed hopper

Solids of high cohesiveness are continuously ground by cooling by indirect contact with liquid coolant, then blowing the cooled granulate with a cold gas stream through a grinder, then separating the gas from the solid, the gas, after renewed indirectly cooling, is again used in the blowing process,...

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Bibliographische Detailangaben
Hauptverfasser:	PILZ,VOLKER,DR, ELGETI,KLAUS, SCHWEDES,HANS-JOERG, GIERSIEPEN,GERHARD
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	CRUSHING, PULVERISING, OR DISINTEGRATING CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL MILLING GRAIN PERFORMING OPERATIONS PREPARATORY TREATMENT OF GRAIN FOR MILLING TRANSPORTING
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Beschreibung
Zusammenfassung:	Solids of high cohesiveness are continuously ground by cooling by indirect contact with liquid coolant, then blowing the cooled granulate with a cold gas stream through a grinder, then separating the gas from the solid, the gas, after renewed indirectly cooling, is again used in the blowing process, while the separated solids are graded and the sufficiently fine fraction removed, the remainder being recycled in the process together with new granulate. By breaking the process down into several correctly combined stages, improved grinding is achieved with reduced energy consumption.