pyrite roasting

pyrite roasting

[′pī‚rīt ′rōst·iŋ]
(mining engineering)
Thermal processing of iron pyrite (FeS2, iron disulfide) in the presence of air to produce iron oxide sinter (used in steel mills) and elemental sulfur.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Projects underway at the moment include a precious metals plant for Poland and two pyrite roasting plants for China.