CPC Main Group B03B 9/00 General arrangement of separating plant, e.g. flow sheets 4 direct subcodes Child Classifications Navigate with arrow keys, Enter to open B03B 9/005 B03B 9/02 specially adapted for oil-sand, oil-chalk, oil-shales, ozokerite, bitumen, or the like B03B 9/04 specially adapted for furnace residues, smeltings, or foundry slags B03B 9/06 specially adapted for refuse