Coal washing and beneficiation. One of the simplest and bestknown techniques for reducing emissions is the washing of coal. In many ways, South Africa leads the way in such technology as the coals mined in the country are poorer quality and require cleaning to be exported.
Coal Beneficiation Coal beneficiation is a process by which the quality of raw coal is improved by either reducing the extraneous matter that gets extracted along with the mined coal or reducing the associated ash or both. Two basic processes of beneficiation: – Drydeshaling: Noncoal or shalycoal is removed without using any liquid media.