A METHOD OF RECOVERING HIGH-GRADE FUEL FROM SOLID MINERAL-FUEL RAW MATERIAL

• Main Authors: BACK, ERIK GUSTAV, SVEMAR, STEN CHRISTER, WALLSTEN, BRUNO CHRISTER, FAHLSTROM, PER ANDERS H. H
• Format: Patent
• Language: English; French; German
• Published: 08.04.1981
• Subjects: ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; BLASTING; CHEMISTRY; COMBUSTION APPARATUS; COMBUSTION PROCESSES; CRACKING HYDROCARBON OILS; EARTH DRILLING; FEEDING FUEL TO COMBUSTION APPARATUS; FIRELIGHTERS; FIXED CONSTRUCTIONS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; HEATING; LIGHTING; LIQUEFIED PETROLEUM GAS; LUBRICANTS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS; MECHANICAL ENGINEERING; METALLURGY; MINERAL WAXES; MINING; NATURAL GAS; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; PYROLIGNEOUS ACID; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS; SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS; SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE; TRANSPORTING; WEAPONS; WORKING-UP PITCH, ASPHALT, BITUMEN, TAR

Procede de recuperation d'un combustible de haute qualite, de preference exempt de soufre, a partir de materiaux combustibles solides bitumeux ou pyro-bitumineux, tels que des schistes huileux ou alumineux, ledit procede comprenant la fine division du materiau brut et en separant ce materiau en au moins un concentrat de combustible et un produit residuel qui est lie au moyen d'un liant sous une forme d'agregat durable. Le procede est caracterise en ce que le materiau brut apres sa reduction physique en fines particules de taille suffisante est separe en un concentrat de combustible de haute qualite, de preference exempt de soufre, contenant une quantite donnee de mineraux formant des cendres ajustee par rapport au contenu en mineraux formant des cendres du materiau brut et en un produit residuel comprenant essentiellement des mineraux formant les cendres. Un liant pour la liaison hydraulique du produit residuel en un agglomerat durable est obtenu a partir du concentrat de combustible en le faisant bruler tout en utilisant le contenu en combustible dudit concentrat. PCT No. PCT/SE80/00104 Sec. 371 Date Dec. 11, 1980 Sec. 102(e) Date Nov. 26, 1980 PCT Filed Apr. 10, 1980 PCT Pub. No. WO80/02152 PCT Pub. Date Oct. 16, 1980.A method of recovering high-grade, preferably sulphur-free fuel from a bituminous or pyrobituminous mineral-fuel material, such as coal, oil shale and alum shale, wherein the raw material is finely divided into a sufficiently fine particle size for freeing the major part of bituminous or pyrobituminous raw material particles from ash-forming mineral particles, and in that the finely divided raw material is separated into a high-grade, preferably sulphur-poor, fuel concentrate which is utilized, a sulphur-containing mixture of bituminous or pyrobituminous material and ash-forming mineral and a residual product comprising mainly ash-forming mineral, and wherein a binder is produced from the sulphur-containing mixture by combusting the mixture while using its own fuel content and whereafter the binder is added to the residual product so as to hydraulically bind the product to a durable agglomerate form.