AP-42, CH 12.8: Secondary Aluminum Operations - EPAhammer mills, ring rushers, and other machines to break scrap containing aluminum into smaller pieces. This improves . Metallurgical Industry. 12.8-1 .. PARTICULATE EMISSION FACTORS FOR SECONDARY ALUMINUM OPERATIONS a.hammer mill metallurgical emission factor,AP-42 12.8 Final Background Document for Secondary . - EPAAP-42 is routinely updated by the EPA to respond to new emission factor needs of the .. hammer mills, ring rushers, and other machines to break scrap containing ... metallurgical operations in Los Angeles County, Los Angeles County Air.Emission Estimation Technique Manual for Mining & Processing of .Feb 1, 2016 . 7.1 Appendix A - Air - Emission Factor Equations for Mining. 67 ... shredded material then is either dried or ground in a hammer mill. Material exiting ... metallurgical flux, for silicon metal and other silicon containing products.
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