Process for granulating metal sulfide powders
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United States of America Patent
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Nov 11, 1980
Grant Date -
N/A
app pub date -
Dec 22, 1978
filing date -
Jan 9, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for granulating metal sulfide powders comprises the steps of adding a solution of thermosetting resin in a volatile organic solvent, as a binder, to a metal sulfide powder as the starting material, forming the mixture thus obtained into granules by a granulator, drying the granulation product, sieving the dried product for classification and recovering the granules within desired limits of particle size, recycling the fines after the sieve classification, with the addition of only the volatile organic solvent, as the material, and heating the granules within the desired limits of particle size for curing. Coarse particles separated out by the sieve classification are pulverized and recycled as the material, with the addition of only the volatile organic solvent.
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