The most common process in the separation of SBW is to screen and dispose of SBW fine fraction under the assumption that this contains largely incombustible brittle material such as sand and glass, and to focus separation on the larger fractions. A study by Sekito et al [10] found however that this assumption was misled and that a high proportion of combustible material was contained in this fraction, the screening of which represented up to a 50% ignition loss. Their study therefore compared separation of SBW by density and Terminal Settling Velocity (TSV) and found that separation by density was the superior option. Over 80% of metals could be recovered without contaminants, and a separation efficiency of up to 99% was achieved recovering combustibles as light fraction with few contaminants.