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Briquetting of Waste Silicon Carbide Obtained from Silicon Wafer Sludges
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 Title & Authors
Briquetting of Waste Silicon Carbide Obtained from Silicon Wafer Sludges
Koo, Seong Mo; Yoon, Su Jong; Kim, Hye Sung;
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Waste SiC powders obtained from silicon wafer sludge have very low density and a narrow particle size distribution of . A scarce yield of C and Si is expected when SiC powders are incorporated into the Fe melt without briquetting. Here, the briquetting variables of the SiC powders are studied as a function of the sintering temperature, pressure, and type and contents of the binders to improve the yield. It is experimentally confirmed that Si and C from the sintered briquette can be incorporated effectively into the Fe melt when the waste SiC powders milled for 30 min with 20 wt.% Fe binder are sintered at upon compaction using a pressure of 250 MPa. XRF-WDS analysis shows that an yield of about 90% is obtained when the SiC briquette is kept in the Fe melt at for more than 1 h.
Casting;Mechanical alloy (Milling);Spark plasma sintering;Briquetting;Silicon wafer sludge;
 Cited by
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