Microwave heating of sulphide minerals as a function of their size and spatial distribution

CIM Journal, Vol. 2, No. 3, 2011
G. Van Weert, P. Kondos, O. Wang
Abstract When exposed to microwaves, rocks containing sulphides adsorb energy preferentially over barren gangue and quickly become warmer with minimal energy consumption. This effect makes subsequent machine sorting of ore from waste rocks or overburden possible using infrared sensing. This paper reports on the 2450 MHz microwave response of a variety of sulphide minerals by mesh size and spatial distribution, as they might occur in ore rocks. The implications for infrared ore sorting are discussed.
Keywords: Microwave heating, Sulphide minerals, Size fractions, Infrared sensing, Ore sorting
Full Access to Journal
PDF version for $20.00
Other papers in CIM Journal, Vol. 2, No. 3, 2011