Consolidated Solids (e.g., Briquette, Etc.) Patents (Class 44/550)
  • Publication number: 20100031560
    Abstract: Disclosed are novel engineered fuel feed stocks, feed stocks produced by the described processes, and methods of making the fuel feed stocks. Components derived from processed MSW waste streams can be used to make such feed stocks which are substantially free of glass, metals, grit and noncombustibles. These feed stocks are useful for a variety of purposes including co-firing with coal and as substitutes for coal.
    Type: Application
    Filed: June 25, 2009
    Publication date: February 11, 2010
    Applicant: CASELLA WASTE SYSTEMS, INC.
    Inventors: Paula A. CALABRESE, Dingrong BAI
  • Publication number: 20100018113
    Abstract: Disclosed are novel engineered fuel feed stocks, feed stocks produced by the described processes, and methods of making the fuel feed stocks. Components derived from processed MSW waste streams can be used to make such feed stocks which are substantially free of glass, metals, grit and noncombustibles. These feed stocks are useful for a variety of purposes including as gasification and combustion fuels.
    Type: Application
    Filed: June 25, 2009
    Publication date: January 28, 2010
    Applicant: CASELLA WASTE SYSTEMS, INC.
    Inventors: James W. BOHLIG, Dingrong BAI
  • Publication number: 20090272028
    Abstract: In embodiments of the present invention, a method of heat treating a solid fuel briquette may include heating the solid fuel briquette using energy from at least one of a heat furnace or an electromagnetic energy system of a solid fuel treatment facility as the solid fuel briquette is moved through the treatment facility to a specified internal temperature, and sealing the heat-treated solid fuel briquette in a vessel for a duration of time.
    Type: Application
    Filed: May 5, 2009
    Publication date: November 5, 2009
    Inventors: J. Michael Drozd, Michael C. Druga, Steven L. Lawson, Frederick Christopher Lang, Herbie L. Bullis
  • Publication number: 20090235577
    Abstract: Embodiments of the present disclosure include methods of binding particulate solids as well as compositions resulting therefrom.
    Type: Application
    Filed: April 15, 2009
    Publication date: September 24, 2009
    Applicant: KELA ENERGY, LLC
    Inventors: Thomas K. Flanery, Lorence M. Moot, Lawrence W. Umstadter
  • Publication number: 20090165370
    Abstract: A solid fuel for fuel cells is produced by introducing a fuel for fuel cells into a porous material, molding an obtained fuel-carrying material to a predetermined shape and forming a coating film on the surface of an obtained molded fuel-carrying material. Further, a solid fuel for fuel cells is produced by introducing water and a fuel for fuel cells into a porous material, molding an obtained fuel-carrying material to a predetermined shape and forming a coating film on the surface of an obtained molded fuel-carrying material. A solid fuel for fuel cells excellent in handleability can be produced thereby, while the safety of the fuel for fuel cells is improved by controlling the vaporization of the fuel for fuel cells.
    Type: Application
    Filed: November 30, 2006
    Publication date: July 2, 2009
    Applicant: KURITA WATER INDUSTRIES LTD.
    Inventor: Koichi Mori
  • Patent number: 7517371
    Abstract: The present invention relates to flavored wood pellets and a method of making flavored wood pellets. The wood pellets of this invention include wood particles, lubricant, and wood oil. Another aspect of the invention is a method that includes mixing wood particles with lubricant and wood oil, heating the mixture, and forming the mixture into pellets.
    Type: Grant
    Filed: August 23, 2004
    Date of Patent: April 14, 2009
    Assignee: Traeger Pellet Grills, Inc.
    Inventors: Joseph P. Traeger, Mark A. Traeger, Randolph J. Traeger, Brian E. Traeger
  • Publication number: 20090038212
    Abstract: A lignin plastics solids mass containing lignin solids and liquids with up to 85% liquids can be partially dewatered by heating the lignin plastics solids mass to above a critical temperature at which time the lignin plastics solids agglomerate into lower moisture granular solids with between about 45% to 55% liquids releasing excess liquid which can be easily removed from the solids. The process is particularly useful for lignin plastics solids removed from black liquor from paper mills, or for similar lignin plastics solids masses, which can contain up to 85% liquids and which need to be dried to form useful lignin solids, which can be used for example for fuel. The dewatering process can be combined with the process for separating the lignin from the black liquor to separate the dewatered lignin directly from the black liquor.
    Type: Application
    Filed: August 8, 2008
    Publication date: February 12, 2009
    Inventor: Harrison R. Cooper
  • Publication number: 20080172932
    Abstract: Hydrogen storage fuel compositions comprising a mixture of at least one chemical hydride compound and at least one compound, polymer, carboxylic acid or salt that acts as a water surrogate source, and methods for thermally initiated hydrogen generation from fuel compositions, are disclosed. The water surrogate source/chemical hydride compositions are preferably solids, and may be powders, caplets, tablets, pellets or granules, for example. The water surrogate source/chemical hydride compositions may comprise alternating layers of the chemical hydride and of the water surrogate source.
    Type: Application
    Filed: November 29, 2007
    Publication date: July 24, 2008
    Inventors: Michael T. Kelly, Kevin W. McNamara, Xiaolei Sun, Alexander MacLachan
  • Patent number: 7399324
    Abstract: A sustained release composite is made from a three-dimensional piece of calcium silicate having a xontolite structure and in which are fibers of textile glass and borosilicate glass, and an active agent. The active agent can be a fire starting material, a fragrance, or a masking fragrance.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: July 15, 2008
    Assignee: Camovision of Georgia, LLC
    Inventors: Ed Roddenbery, Robert Stover, Charles D. Black, Jr., Robert M. Fuller
  • Patent number: 7383766
    Abstract: The invention relates to a coal dewatering system, method and apparatus. The dewatering system includes a preheater vessel (82) having a chamber (101) for heating coal, an inlet (84) to permit the passage of coal into the chamber (101), and an outlet (86) for permitting the passage of coal from the chamber (101). The dewatering vessel also includes a heating mechanism (98) associated with the preheater vessel (82) to heat coal contained in the chamber (101) and a non-return valve (92) to substantially prevent heated coal removed from the preheater chamber (101) via the outlet (86) from re-entering the preheater vessel (82) via the outlet (86). The dewatering system further includes a dewatering unit (60) adapted to receive the heated coal from the outlet (86) via the non-return valve (92) and to thereby dewater the coal.
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: June 10, 2008
    Assignee: MTE Research Pty Ltd
    Inventors: Malcolm John McIntosh, Danh Quan Huynh
  • Patent number: 7022147
    Abstract: A fuel article, suitable for barbecuing, allowing greater burning efficiency and the method of making such a fuel article. The fuel article includes anthracite coal for cleaner burning and utilizes an accelerant covering containing nitrates to be amenable to easy ignition.
    Type: Grant
    Filed: February 1, 2002
    Date of Patent: April 4, 2006
    Assignee: MBZQ, L.L.C.
    Inventors: Cui Bao Tai, Jerry Sharon
  • Patent number: 6902589
    Abstract: The invention relates to a method for producing shaped, activated charcoal. According to the method, after being ground, carbon-bearing material, or a mixture of several carbon-bearing materials are rendered homogenous with a binding agent which contains water, or a mixture of several binding agents, at least one of which contains water. The mixture of carbon-bearing material and binding agent is then formed into shaped bodies. According to the invention, in order to consolidate the grain formation, these are dried until they exhibit a maximum total water content of 3% by wt. in relation to the shaped body. The shaped bodies which have been formed and dried in this manner are then subjected to a carbonization and subsequently a gas activation process.
    Type: Grant
    Filed: June 6, 2000
    Date of Patent: June 7, 2005
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Joachim Guderian, Volker Heil, Christian Horn, Michael Feseker, Jens Sohnemann
  • Publication number: 20040244281
    Abstract: 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 into cardboard strips, then chopping the cardboard strips into cardboard segments in the cutting assembly. The cardboard segments are compressed and in the compression conveyor auger assembly and extruded in the die to form generally circular, longitudinally-shaped sections of a firelog. Firestarter chips are fabricated by the cutting assembly, which slices cardboard sheets in conjunction with paper sheets into cardboard and paper strips, then chopping the cardboard strips into cardboard segments and the paper strips into paper mix.
    Type: Application
    Filed: March 17, 2004
    Publication date: December 9, 2004
    Inventors: Gregory J. Peterson, Gary M. Flint
  • Patent number: 6818027
    Abstract: An organically clean biomass fuel formed of mixture of a powder, which may be either dried, cellulosic product, wood charcoal powder, and/or a combination of the two, and a fluid, which may be vegetable oil, vegetable alcohol or a combination of the two. A centrifugal machine dries moist, cellulosic product and extracts black liquor. A grinder transforms the dried, cellulosic product into powder. Gum may be extracted from the vegetable oil or vegetable alcohol. A batch mixer or vibrating vessel mixes the powder and the fluid together; the fluid moisturizes the powder. Depending upon the relative amount of the fluid as compared to powder, the mixture will either be in a liquid cream state or a doughy state. If the latter, the mixture may be pressed into briquettes or ingots.
    Type: Grant
    Filed: January 13, 2004
    Date of Patent: November 16, 2004
    Assignee: Ecoem, L.L.C.
    Inventor: Philippe R. Murcia
  • Patent number: 6790244
    Abstract: An improved stackable charcoal briquet has a convex bottom and a concave top and is packaged in a stacked compact boxed package. A charcoal briquet having improved burning characteristics and also improved shipping and retailing characteristics is thereby provided.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: September 14, 2004
    Assignee: Nottingham-Spirk Design Associates, Inc.
    Inventors: Craig M. Saunders, Lindsey Tufts, Jr., David J. Boll
  • Publication number: 20040111958
    Abstract: Coal ash, which also consists of fly ash, is a very fine granular solid residue obtained as a by-product of coal combustion. The invention relates to the surprising result that a fuel can be obtained from coal ash. The process involves a pneumatic separation of the coal ash at relatively low temperatures. The coal ash is separated into at least two size fractions. The size fractions obtained by the process of this invention include at least one with lower carbon and another containing increased levels of carbon in the range of 50% by weight and a heating value in the range of 4000 to 6000 Btu/lb.
    Type: Application
    Filed: December 16, 2002
    Publication date: June 17, 2004
    Inventors: David Bridson Oates, Alan Van Sloten, Jeffrey Fair, Trent Renfro, Craig Plunk
  • Patent number: 6626966
    Abstract: A method of producing coal briquette at a low energy cost by saving heating step or drying step for fine coal, which comprises adding and mixing from 1 to 10 mass parts of powdery starch to a coal having 15 mass % or more of water content and comprising 50 mass % or more of particles with grain size of 5 mm or less to form 100 mass parts of a mixture, and coating the surface of the briquette product with 0.1 to 5 mass parts of a heavy oil component simultaneously with or after pressure briquetting the mixture by a double roll briquetting machine in which concaves are formed on the roll surface, as well as coal briquette which is inexpensive and has high strength and high waterproof.
    Type: Grant
    Filed: August 12, 2002
    Date of Patent: September 30, 2003
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Katsunori Shimasaki, Tetsuya Deguchi, Satoru Sugita, Eiichiro Makino
  • Patent number: 6514332
    Abstract: Coating compositions containing a bituminous material and an effective amount of a methyl/ethyl ester diluent for coating bulk solids are disclosed. The coating compositions of the present invention are particularly suited to reduce dust formation and cake formation in fertilizer and coal.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: February 4, 2003
    Assignee: Arr-Maz Products, LP, a division of Process Chemicals, LLC
    Inventors: Glen R. Varnadoe, Stacy K. Spence
  • Publication number: 20020194779
    Abstract: An artificial firelog is provided comprising combustible cellulosic material, a combustible wax binder and an amount of sodium bicarbonate effective to reduce emissions of particulate matter (PM) and carbon monoxide (CO). The sodium bicarbonate comprises about 1% to about 10% by weight of the artificial firelog. Preferably, the sodium bicarbonate comprises about 2% to about 5% by weight of the artificial firelog. Besides substantially reducing PM and CO emissions during combustion of the artificial firelog, the undesirable odor associated with combustion of the wax binder is decreased and the firelog's total burn time is extended. Moreover, the sodium bicarbonate increases the “poke resistance” of the firelog making the log suitable for outdoor use and a natural appearing white ash develops during the course of combustion.
    Type: Application
    Filed: April 25, 2002
    Publication date: December 26, 2002
    Applicant: DURAFLAME, INC.
    Inventor: Eric D. Barford
  • Publication number: 20020178651
    Abstract: 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 range of 760 to 800 kg/m3, mixing 10-100% of the resultant calcined petroleum coke with 0 to 50% coke breeze, pre-soaking the mix so obtained with 5-10% water, mixing with hinder followed by kneading in presence of live stream, then briquetting and curing of the raw briquettes in a furnace in a controlled oxidising atmoshpere to obtain the low ash fuel.
    Type: Application
    Filed: March 30, 2001
    Publication date: December 5, 2002
    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Paras Nath Sinha, Partha Sengupta, Kali Sankar Bhattacharya
  • Patent number: 6447559
    Abstract: Process for treating coal to enhance its rank, wherein the temperature of the material is gradually increased in a controlled set of atmospheres, to allow for the reduction of surface and inherent moisture and the controlled reduction of volatile matter while maintaining the coal's natural structural integrity. The process reduces the time, capitalization, and production costs required to produce coal of enhanced rank, thus substantially increasing the cost effectiveness and production rate over prior processes.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: September 10, 2002
    Assignee: Saudi American Minerals Inc.
    Inventor: Larry Hunt
  • Patent number: 6217625
    Abstract: 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 combustion of the pellets to support a smoldering burn in use.
    Type: Grant
    Filed: November 8, 1999
    Date of Patent: April 17, 2001
    Assignee: Westvaco Corporation
    Inventors: Eddy T. McDermott, Joe Oktela
  • Patent number: 6156083
    Abstract: 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 pieces of material from the mixture producing a first stream containing recoverable fine coal particles, and pumping the first stream from the first liquid/solid separator to at least one second liquid/solid separator, the at least one second liquid/solid separator separating recoverable fine coal particles from the first stream producing a product flow containing fine coal particles and a discharge stream containing, e.g., water and impurities. In one aspect, the coal in the product flow is then dried and/or pelletized. In one aspect fine coal particles in the product flow have a largest dimension of less than 100 microns. In one aspect, fine coal particles in the product flow have a largest dimension of at least about 40 microns.
    Type: Grant
    Filed: February 5, 1998
    Date of Patent: December 5, 2000
    Assignee: Tuboscope
    Inventor: James R. Dial
  • Patent number: 6152972
    Abstract: Catalytic metal additives that directly dissolve in gasoline in concentrations providing efficient and economical three-way catalysis of exhaust gases from internal combustion engines. The additives are compounds of noble (e.g., Pt, Pd, Au and Rh) or non-noble (e.g., Re) metals. The preferred compounds have polar metal ligand bonds, preferably with inorganic ligands such as halogens, oxygen, etc., and/or salts with highly ionic (polarizable) cations such as of alkali metals. The preferred additive is a combination of X.sub.2 PtCl.sub.6, RhCl.sub.3 and XReO.sub.4, where X=K, Rh or Cs. A combination of these finely ground materials is fabricated into a briquette or filter which is deposited in the gas tank or placed in a gas line. The catalytic metals are carried by the exhaust gases through the exhaust system where they are deposited on surfaces of the system to convert toxic emissions.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: November 28, 2000
    Assignee: Blue Planet Technologies Co., L.P.
    Inventors: Alexander Shustorovich, Eugene Shustorovich, Richard Montano, Konstantin Solntsev, Yuri Buslaev, VEniamin Kalner, Nikolai Moiseev, Aleksandr Bragin
  • Patent number: 5893946
    Abstract: A combustible carbonaceous composition and method of making a charcoal briquette wherein a finely divided carbonaceous material is combined with an activated carbon and/or an activated graphite (which may be formed in-situ during pyrolysis of the composition by reacting a humic-containing ore with a low VOC-containing carbon and/or graphite). The combustible carbonaceous composition is present in the briquette composition in an amount of about 65% to about 99.9% by weight; a binder is included in the composition in an amount of about 1% to about 15% by weight when forming a charcoal briquette or an igniter log; and the activated carbon and/or activated graphite is present in an amount of about 0.1% to about 20% by weight. The activated carbon and/or activated graphite absorbs most of the VOCs entitled from the combustible carbonaceous material, thereby preventing the VOCs from escaping to the atmosphere.
    Type: Grant
    Filed: May 7, 1997
    Date of Patent: April 13, 1999
    Assignee: Amcol International Corporation
    Inventor: Charles R. Landis
  • Patent number: 5658357
    Abstract: 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 comprises applying a compressive stress to the feed mixture either by compacting the feed in a mold or by extruding the feed through the die of a suitable extrusion apparatus while controlling certain process parameters, including the moisture content and the zeta potential of the particulate feed. The process can be used to form large, cylindrically-shaped compacts from coal particles (i.e., "coal logs") so that the coal can be transported in a hydraulic coal log pipeline or by conventional means.
    Type: Grant
    Filed: March 21, 1995
    Date of Patent: August 19, 1997
    Assignee: The Curators of the University of Missouri
    Inventors: Henry Liu, Yuyi Lin, Tom Marrero, Bill Burkett
  • Patent number: 5427805
    Abstract: Briquettes capable of sustained emission of aromatic volatiles during cooking of food over a heated bed of briquettes comprise a bonded combustible or non-combustible matrix containing within the matrix at least one pellet of combustible aromatic material. The briquettes are preferably conventional charcoal briquettes containing a plurality of pellets of compressed bonded wood. The wood is preferably a flavoring wood such as hickory. The invention also encompasses a method of imparting flavor to food comprising cooking food over a heated bed of the briquettes of the invention.
    Type: Grant
    Filed: July 29, 1993
    Date of Patent: June 27, 1995
    Assignee: Hickory Specialties, Inc.
    Inventor: Robert J. Crace
  • Patent number: 5238629
    Abstract: 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, dried, and preferentially compressed into pellet form. The process also entails the recovery and return of the agglomerating liquid. The agglomerating liquid of the present invention includes the reagent portion which is a member or a combination of the group consisting of aromatic tertiary amines, nonaromatic cyclic amines or primary organic amines. The solvent is an organic solvent, desirably a member or a combination of the group consisting of toulene, chloroform, carbon disulfide or dimethylacetamide. The pellet formed from the process of the present invention is uniquely water resistant and of controllable hardness.
    Type: Grant
    Filed: August 9, 1991
    Date of Patent: August 24, 1993
    Assignee: Adtech, Inc. of Illinois
    Inventor: James G. Davidson
  • Patent number: 5230715
    Abstract: The pyrogen of the invention is formed by the compression of ferrosilicon powder and a mixture of ferric oxide powder and another lower order iron oxide powder. This pyrogen overcomes the weaknesses inherent in earlier pyrogens by dispensing with the use of peroxides. The scope of the invention also extends to the canister which holds the pyrogen. The pyrogen, which is positioned inside the canister's combustion chamber in such a way that it comes into contact with the top of said combustion chamber, is supported by a special ceramic thermal insulator which contains an ignition device comprising an ignition agent, which also incorporates an instant high temperature generating ignition material, and a match head chemical which projects out of a hole in the base cover of the canister. The bottom of the canister is covered by a bottom cap which can be freely removed or replaced as required. The canister, which enables the heating or cooking of whatever is placed inside it, is compact, safe and cheap.
    Type: Grant
    Filed: November 8, 1991
    Date of Patent: July 27, 1993
    Assignees: Dowa Iron Powder Co., Ltd., Iwatani International Corp.
    Inventors: Yasuyuki Iizuna, Shinya Takada
  • Patent number: 5226926
    Abstract: A waste plastic material, e.g. hard plastic waste constituted of vinyl chloride, polyethylene, and foamed polystyrene, soft plastic waste, or other plastic waste containing metal fragments, is immersed in a vegetable or mineral oil heated to 110.degree. to 180.degree. C. for melting in to a saturation of the plastic waste, the proportion of the plastic waste added to the oil being sufficient to saturate the oil. The melted plastic material, in which quantities of the oil are entrapped is mixed with a given dose of a neutralizing agent, e.g. calcium hydroxide, at a temperature of 220.degree. to 300.degree. C. Then, the resultant mixture, in which a quantity of the oil is entrapped is shaped into a solid fuel product, or into a predetermined form disposable in a landfill.
    Type: Grant
    Filed: June 15, 1992
    Date of Patent: July 13, 1993
    Assignees: Tsutomu Matsuzaki, Chuo Kagaku Co., Ltd.
    Inventor: Tsutomu Matsuzaki
  • Patent number: 5067968
    Abstract: The briquetting of bituminous coals without the use of extraneous binders is effected by a system of high temperature, high pressure mold forming of the coal fines material in an apparatus incorporating a high pressure roll-type briquetting press, to provide briquettes of enhanced quality and handeability, with good crushing strength and high impact resistance. The system incorporates a positive pressure controlled oxygen, gas recirculation flash-dryer, and a direct briquette product to raw feed heat exchange system and other innovative heat management arrangements, for high system efficiency.
    Type: Grant
    Filed: November 1, 1990
    Date of Patent: November 26, 1991
    Inventors: Joseph W. Davidson, Geoffrey Blackmore, Gerald Blackmore, Karl R. Komerek, deceased, by Richard Komerek, executor
  • Patent number: 5049163
    Abstract: 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 agent composition are mixed homogeneously to form an admixture which is ground to powder with dimension from about 30 mesh to about 60 mesh. With an improved roll briquetter of the present invention, briquettes with a microporous surface layer of said admixture powder can be prepared. In such briquettes, the atomic ratio of calcium in the sulphur trapping agent composition to sulphur in the pulverized coal is within the range of from about 1.0 to about 2.0. Microporous pellets of said admixture having opening-porosity are also prepared with conventional roll briquetter. The diameter of the prepared pellets is within the range from about 8 mm to about 20 mm. A layer of said pellets covers the surface of pulverized coal in a burner for combustion.
    Type: Grant
    Filed: December 26, 1989
    Date of Patent: September 17, 1991
    Assignee: Briquetting Research and Design Institute, Beijing Graduate School of China University of Mining and Technology
    Inventors: Zhongcheng Huang, Peilan Wang, Xiaoxu Lei
  • Patent number: 4997457
    Abstract: A solid gelled fuel for producing a visible flame of various colors, which contains methyl alcohol as a primary ingredient in a solid gel with the addition of dibenzylidene sorbitol, cellulose ester and ethylene glycol, with a flame coloring compound being suspended in the solid.
    Type: Grant
    Filed: January 9, 1990
    Date of Patent: March 5, 1991
    Assignee: Yugen Kaisha Gunma Kakoh Seizosho
    Inventors: Tomochiyo Mitsusawa, Hiroshi Ise
  • Patent number: 4846849
    Abstract: Fine-grained substances which do not soften below 800.degree. C., such as oil coke, coking duff, pitch coke and/or fine-grained coal with less than 14% volatile constituents, sand, ores, metal oxides, metals or mixtures of such substances, are introduced in at least two places into a carrier gas stream and are thermally heated to 550-650.degree. C. in the solid discharge of a first cyclone. Then the same carrier gas stream heats coking coal amounting to 18-38% of the intended briquettable product material to 200-400.degree. C. in the solid discharge of a second cyclone. The two solid flows are mixed and treated, producing the briquettable material at 500.+-.50.degree. C. The carrier gas stream is produced by the combustion of liquid and/or gaseous fuels with an excess air factor of 2 or more. Thermally inert, low-ash solid fuels, such as oil coke, pitch coke and/or low-ash, fine-grained, low-volatility coal, amounting to 20-40% of the briquetting material, are initially introduced.
    Type: Grant
    Filed: October 6, 1987
    Date of Patent: July 11, 1989
    Assignee: Laborlux S.A.
    Inventors: Franz Beckmann, Matthias Ferner, Armand Wagner
  • Patent number: 4830637
    Abstract: Method and apparatus for reducing the dustiness and increasing the size distribution of a coal product in a coal preparation plant by mixing dewatered coal fines and recycled fine coal from the cyclone separator with a binder to form an agglomerated/size enlarged coated product which can be passed through a thermal dryer.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: May 16, 1989
    Assignee: Consolidation Coal Company
    Inventor: George E. Wasson