A proposed process for the desulfurization of finely divided coal by flash roasting and magnetic separation

A new non-polluting process for the desulfurization of coal is proposed. The process which consists of a short low-temperature roast in an inert atmosphere, followed by magnetic separation, is expected to produce coal containing approximately one-third of its initial sulfur content, coal chemicals, elemental sulfur and a solid waste product that contains large amounts of sulfur, iron and to a lesser extent coal. A flow chart and energy balance for the possible process and preliminary experimental results from a laboratory scale model are presented.