C - Chemistry – Metallurgy – 10 – L
Patent
C - Chemistry, Metallurgy
10
L
44/1, 196/11
C10L 9/02 (2006.01)
Patent
CA 1159001
TITLE SULFUR REMOVAL FROM COAL INVENTOR Ludmila Lompa-Krzymien ABSTRACT OF THE DISCLOSURE Coal is treated to remove both pyritic and organic sulfur by contacting with an aqueous solution comprising cupric ions at temperatures of about 140°C-200°C under auto- genic pressure, until substantial amounts of the sulfur are solubilized, separating the coal solids, and washing the solids with water to remove soluble forms of sulfur, iron and copper therefrom. The copper can be recovered and recycled as a cupric salt.
399434
Canadian Patents And Development Limited - Societe Canadienne De
Thomson Alan A.
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