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Microwave heating characteristics of selected minerals and compounds.

Authors
Walkiewicz-JW; Kazonich-G; McGill-SL
Source
Miner Metall Process 1988 Jan; 5(1):39-42
Link
NIOSHTIC No.
10006026
Abstract
This paper describes naturally occurring minerals and reagent-grade compounds which were tested to determine their receptivity to microwave heating. The maximum temperature achieved for the samples and the time required to reach temperature are reported. A description of the microwave oven and a thermocouple technique that accurately measures and continuously records the temperature of samples during irradiation are reported. Extractive applications using the generated microwave data were investigated. Stress fracturing at mineral grain boundaries in a gangue matrix was shown. This should significantly affect grinding energy requirements and liberation properties. A method to produce a magnetic phase on pyrite surfaces, a method of using microwave heating to retort cinnabar concentrate, and a roast-leaching microwave treatment of chalcopyrite ore are described.
CODEN
MMPRE8
Publication Date
19880101
Document Type
OP; Journal Article
Fiscal Year
1988
NTIS Accession No.
NTIS Price
Identifying No.
OP 67-88
Issue of Publication
1
ISSN
0747-9182
NIOSH Division
RERC
Source Name
Minerals & Metallurgical Processing
State
NV
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