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| Number | Title | Issue Date |
| 8070839 | Briquetting process A process and system for briquetting particulate matter such as moisture-containing bituminous and sub-bituminous coal includes partially drying and feeding the particulate matter to a briquetting apparatus under conditions such that water vapor is released from the... | 12/06/2011 |
| 7892302 | Briquetting process A process and system is provided for briquetting particulate matter such as moisture-containing bituminous and sub-bituminous coal. This process includes partially drying the particulate matter and feeding, the partially dried particulate matter to a briquetting app... | 02/22/2011 |
| 7314002 | Densification system A densification system for shredding and densifying specification raw materials for use as an alternative fuel source. The densified specification raw materials formed by the inventive system are readily transportable to a fuel processing site where they may be used... | 01/01/2008 |
| 7264763 | Method and apparatus for the manufacture of compacts A method for the manufacture of compacts from comminuted material (12) such as lignocellulose material and/or other combustible material for burning in hearths, wherein the material (12) is placed into openings (11) of a mold (4) and then... | 09/04/2007 |
| 7252691 | Conversion of municipal solid waste to high fuel value A combustible pellet comprising municipal solid waste. The pellet has a water content of less than 10% by weight and a fuel value of at least 10,000 BTU. A process for the forming of a combustible pellet from municipal solid wastes, comprising the steps of removing ... | 08/07/2007 |
| 7147111 | Hindered-settling fluid classifier A hindered-settling fluid classifier is adapted for processing aggregate entrained in a flowing slurry. The classifier includes a classifier tank defined by walls, and having an inlet at its upstream end and an outlet at its downstream end. A slurry feed pipe is con... | 12/12/2006 |
| 7087171 | Method for selective recovery and dewatering sewage sludge by using sludge-coal-oil co-agglomeration Disclosed herein is a method for dewatering sewage sludge by using sludge-coal-oil co-agglomeration (“SOCA”) which comprises the steps of physically, chemically or biologically conditioning sludge to impart hydrophobicity and lipophilicity to the sludge (conditi... | 08/08/2006 |
| 6716259 | Artificial firelogs and firestarter chips and method and apparatus for manufacture thereof An artificial firelog and firestarter chip producing apparatus comprising a cutting assembly, a compression conveyor auger assembly and a die. The apparatus converts standard waxed corrugated cardboard boxes into artificial firelogs by first slicing cardboard sheets... | 04/06/2004 |
| 6709472 | Insolubly bound particulate products The novel features of this invention include a bio-based binding-agent and a manufacturing process which—together with conventional production equipment—comprise a very low-cost system for making strong and water-insoluble products from a variety of particulate ... | 03/23/2004 |
| 6613109 | Process for manufacturing artificial firelogs An artificial firelog having a support surface, a viewing surface, and a pair of end surfaces is produced by moving a component mixture through an extrusion bore containing an extrusion die. The component mixture is divided by a blade extending the diamet... | 09/02/2003 |
| 6524354 | Process for the production of low ash fuel The present invention describes a process for the production of low ash fuel using calcined petroleum coke by crushing and screening of calcined petroleum coke below 3 mm size, mixing the crushed and screened materials to achieve a bulk density in the ran... | 02/25/2003 |
| 6375690 | Process for forming coal compacts and product thereof A process for forming durable, mechanically strong compacts from coal particulates without use of a binder is disclosed. The process involves applying a compressive stress to a particulate feed comprising substantially water-saturated coal particles while... | 04/23/2002 |
| 6375447 | Apparatus for dewatering and pelletizing particulate fuel An apparatus for pelletizing a feed material containing finely divided solids and water by compressing the feed material in the die cavities of a pellet mill and permitting excess water to escape from the material being compressed through at least one wat... | 04/23/2002 |
| 6273922 | Durable briquettes for use in gas-fired barbecue grills A briquette, and method of making it, for use in gas-fired barbecue grills. The briquette features three desirable characteristics: (1) relative permanency or durability, i.e. it is useable a number of times without physical disintegration or shedding of ... | 08/14/2001 |
| 6251147 | Artifical firelog and firestarter chip producing apparatus and method and products produced therefrom An artificial firelog and firestarter chip producing apparatus comprising a cutting assembly, a compression conveyor auger assembly and a die. The apparatus converts standard waxed corrugated cardboard boxes into artificial firelogs by first slicing cardb... | 06/26/2001 |
| 6217625 | Pelletized pulp A pelletized cellulosic pulp product is produced from a delignified and bleached paper pulp raw material that is useful as a combustion material. The size, shape, density and glazed outer surface of the pelletized product contributes to controlled combust... | 04/17/2001 |
| 6214064 | Process for making a fuel product from coal fines and sewage sludge A process for making a fuel product including blending a sewage sludge with an acid, mixing an oxide-containing chemical with the blended sludge so as to cause a reaction which elevates a temperature of the sludge, pressurizing the mixed sludge to a press... | 04/10/2001 |
| 6165238 | Fuel pellet and method for its production An improved pelletized fuel consisting essentially of from about 70% to about 98% coal fines and from about 2% to about 30% waste thermoplastic polymeric material (plastic) and a method of producing the improved pelletized fines are disclosed. The plastic... | 12/26/2000 |
| 6156083 | Coal reclamation systems A method for recovering coal from a mixture containing fine particles of coal, the mixture including fine coal particles, water, and impurities, the method including feeding the mixture to a first liquid/solid separator that removes relatively large piece... | 12/05/2000 |
| 6152973 | Compressed wood fuel pellet and method and machine for making same A method and machine for making a new and improved compressed wood fuel pellet. The method comprising the steps of severing a wafer of tree trunk or branch, punching or splitting a small portion along the grain in the wafer, confining each portion across ... | 11/28/2000 |
| 6136054 | Synthetic fireplace log comprising waxed cardboard and method of producing A low cost and an environmentally-friendly synthetic firelog is made by mixing specially processed waxed-cardboard or other wax coated papers of varying proportions with a binder/fuel. The binder/fuel consists of a petroleum wax or a mixture of waxes, the... | 10/24/2000 |
| 6099770 | Method of and apparatus for dewatering and pelletizing particulate fuel A method of and apparatus for pelletizing a feed material containing finely divided solids and water by compressing the feed material in the die cavities of a pellet mill and permitting excess water to escape from the material being compressed through at ... | 08/08/2000 |
| 5879421 | Apparatus and method for forming an aggregate product from particulate material This invention is directed to a method and apparatus for forming an aggregate product from particulate material, and in particular for making an aggregate coal product from coal particles. The method involves the steps of 1) loading the coal particles int... | 03/09/1999 |
| 5743924 | Pelletized fuel composition and method of manufacture Disclosed is a pelletized fuel composition comprising coal fines in an amount of from 60% to 80% by weight, paper making sludge in an amount of from 10% to 30% by weight, and a shredded polymeric material in an amount of from 0.5% to 15% by weight. Surpri... | 04/28/1998 |
| 5658357 | Process for forming coal compact without a binder A process for forming durable, mechanically strong compacts from feed mixtures comprising solid particles in contact with a liquid (e.g., carboniferous particles in contact with water) which does not require use of a binder is disclosed. The process compr... | 08/19/1997 |
| 5645614 | Process for the utilization of sewage sludges In the process, the wet sewage sludge originating from a preceding mechanical dewatering is mixed with brown coal, brown coal coke or their mixtures in a weight ratio of sewage sludge to brown coal or its mixtures with brown coal coke of 1:3 to 3:1 and su... | 07/08/1997 |
| 5599360 | Method for the manufacture of char-containing articles A process for manufacturing charcoal and intermediate char-containing articles from paper and/or paperboard comprises forming an aqueous pulp of cellulose fibers from the paper or paperboard and blending the aqueous pulp with comminuted char in a dry or s... | 02/04/1997 |
| 5562743 | Binder enhanced refuse derived fuel A refuse derived fuel (RDF) pellet having about 11% or more particulate calcium hydroxide which is utilized in a combustionable mixture. The pellets are used in a particulate fuel bring a mixture of 10% or more, on a heat equivalent basis, of the RDF pell... | 10/08/1996 |
| 5431702 | Waste conversion process and products A process is disclosed for time production of fuel pellets or briquettes from sewage sludge solids and municipal solid waste with minimal drying requirements. In one of its more specific aspects, this invention relates to a solid pelleted or briquetted fu... | 07/11/1995 |
| 5429645 | Solid fuel and process for combustion of the solid fuel A solid fuel containing a recycled residue from anaerobic fermentation or anaerobic digestion of an organic material. The solid fuel can also contain a volatile solid fossil fuel. The residue is preferably derived from an anaerobic digestion process of mu... | 07/04/1995 |
| 5393310 | Artificial fireplace log and method for making the same A method for making artificial fireplace logs includes the initial step of mixing a quantity of grass clippings and leaves with a quantity of wood chips and sawdust to form a mixture. A liquid binder is then added to the mixture until the binder coats the... | 02/28/1995 |
| 5376156 | Method for binding particulate wastes such as dusts, fibers, paper and metal wastes or the like, into solids The particulate waste is mixed with plastic waste in a screw extruder, pressed and extruded. The particulate waste and plastic waste are introduced into the feed hopper of a screw extruder. The components introduced are intimately mixed in the screw extru... | 12/27/1994 |
| 5352252 | Process for making fuel cubes from straw A process for making fuel cubes from straw includes the steps of drying and cutting the straw, adding lime to the straw and applying ammonia to the straw. The straw is then placed in a densification machine or cuber where solid bricks are formed. The ammo... | 10/04/1994 |
| 5264007 | Method of making fuel briquettes and the briquettes so made Fuel briquettes are made by blending a caking coal with pitch at a temperature above 100° C. but below 200° C. to form a pitch/coal alloy binder which is then hot-blended with any caking coke, especially petroleum coke and optionally finely-divided lime... | 11/23/1993 |
| 5250080 | Process for manufacturing a solid fuel A process is disclosed for manufacturing solid fuel which includes the steps of mixing a biomass, a heavy hydrocarbon and a sorbent to form a hydrocarbon-biomass slurry, the biomass being characterized by a particle size and distribution of about 50% betw... | 10/05/1993 |
| 5238629 | Process of coal agglomeration A process for the agglomeration of coal fines comprises the steps of mixing the coal fines with an agglomerating liquid which is further comprised of a reagent and a solvent portion. The coal fines are thereafter separated from the agglomerating liquid, d... | 08/24/1993 |
| 5049333 | Briquet forming apparatus and method Apparatus and method for preparing briquets of charcoal or the like with various shapes, preferably half pillow or "D" shape, in which briquets are molded between roll type press for compressing particulate material wherein mold cavities are circumferenti... | 09/17/1991 |
| 5049163 | Process for reducing sulphur dioxide emission from burning coal containing sulphur This invention discloses a process for reducing sulphur dioxide emission from burning coal containing sulphur. In the disclosed process, pulverized combustible materials, such as coal, wood flour, combustible plant, charcoal, etc., and a sulphur trapping ... | 09/17/1991 |
| 5009672 | Process for recycling and reutilizing waste, in particular solid urban waste Process for recycling and recovering solid urban waste and the like, consisting in subjecting solid urban waste (SUW), after the removal of any ferromagnetic material present therein, to high-pressure compression inside a screening press or the like, so a... | 04/23/1991 |
| 4834777 | Fuel pelletizing apparatus and method Fuel pellets are produced by reciprocating punches and complementary stationary dies across which waste solid or particulate organic materials are continuously passed. The reciprocating punches force the material into a reduced cross-sectional bore within... | 05/30/1989 |
