ORE COMMINUTION PROCESS USING BED-COMPRESSION METHOD AT LOW PRESSURES AND INSTALLATION THEREFOR

The invention provides a method and installation for processing heterogeneou s value bearing material by pressure comminution. The material is compressed in a bed of particles, at low pressures and at low bu lk material densities, and preferably no more than is necessary to liberate the desired valu...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	FELDMAN, CARLOS MAURICIO, TUMILTY, JAMES ANTHONY JUDE, SER, VILIM, SMIT, JAN TJEERD
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMISTRY CRUSHING, PULVERISING, OR DISINTEGRATING CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL FERROUS OR NON-FERROUS ALLOYS METALLURGY MILLING GRAIN PERFORMING OPERATIONS PREPARATORY TREATMENT OF GRAIN FOR MILLING PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The invention provides a method and installation for processing heterogeneou s value bearing material by pressure comminution. The material is compressed in a bed of particles, at low pressures and at low bu lk material densities, and preferably no more than is necessary to liberate the desired values, thereby to minimize the formation of fines. The compressive bed pressure applied to the material does not exceed 300 MPa, preferably at most 50 MPa and more preferably 30 MPa. The process is preferably operated in an open circuit mode. Surprisingly, these measures lead to enhance liberation of values compared with conventional comminution techniques.