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The influence of potassium and calcium species on the swelling and reactivity of a high–swelling South African coal
Alkali compounds were added to a South African coal with a high swelling propensity and the behaviour of the blends were investigated. A vitrinite-rich bituminous coal from the Tshikondeni coal mine in the Limpopo province ...
Extraction of K, AI and Ti containing compounds from ash produced by low temperature combustion
(North-West University (South Africa), 2019)
South African coal samples can contain up to 30% aluminium oxide which is constituted in the mullite and insoluble aluminium silicate mineral phases. This suggests that coal ash, produced in power plants or thermal processing ...