C - Chemistry – Metallurgy – 10 – L
Patent
C - Chemistry, Metallurgy
10
L
44/50
C10L 5/12 (2006.01) C10L 5/40 (2006.01)
Patent
CA 1168874
A B S T R A C T A method for recovering high-grade, preferably sulphur-free fuel from bituminous or pyrobituminous mineral-fuel materials, such as coal, oil shale and alum shale, said method comprising finely- dividing the raw material and dividing said material into at least one fuel concentrate and a residual product which is bound to a durable agglomerate form by means of a binder. The method is charac- terized in that the raw material, subsequent to finely-dividing the same to a sufficient particle size physically, is divided into a high-grade, preferably sulphur-free mineral fuel concentrate containing a given quantity of ash-forming minerals adjusted relative to the con- tent of ash-forming minerals of the raw material, and into a residual product comprising substantial ash-forming minerals. A binder for hydraulically binding the residual product to a durable agglomerate is produced from the fuel concentrate by combusting the same while using the fuel content of said concentrate.
365518
Back Erik G.
Fahlstrom Per A.h.h.
Svemar Sten C.
Wallsten Bruno C.
Boliden Aktiebolag
Gowling Lafleur Henderson Llp
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