How to Remove Pyrite from Coal - 911 Metallurgist
Stage grinding improved pyrite removal by about 30 pct and increased the reject portion from 12 pct to 18 pct. A second coal from the Pittsburgh seam that was representative of the utility coals burned in this area was crushed by ball milling and Hardgrove milling, and each pulverized consist was cleaned by dry separation.
اقرأ المزيد