Class 34/424 - Of slurry or suspension

Subclass of Class 34 - Drying and gas or vapor contact with solids
Definition: Process wherein the treated material is a mixture of solid
No. of patents: 25
Last issue date: 03/11/2008

Number	Title	Issue Date
7341646	Low energy method of pyrolysis of hydrocarbon materials such as rubber A low energy method of pyrolysis of rubber or other hydrocarbon material is provided. The hydrocarbon material is heated while maintaining a vacuum, using a clay catalyst. In an additional embodiment, also under a vacuum and optionally with or without the catalyst, ...	03/11/2008
7144931	Method of manufacturing polymer particles A method of manufacturing polymer particles capable of increasing the easiness of handling of powder when the powder is collected and preventing the powder from adhering to the wall surface of a dryer and the outlet of the dryer from being clogged with the powder by...	12/05/2006
7001512	Closed loop processing system for waste and crops A process for treating waste products discharged in a waste water from an animal operation, such as a swine confinement facility includes a holding tank for receiving waste water from the flushing of the facility in which solids to accumulate at the bottom thereof; ...	02/21/2006
6939904	Method of manufacturing polymer particles A method of manufacturing polymer particles capable of increasing the easiness of handling of powder when the powder is collected and preventing the powder from adhering to the wall surface of a dryer and the outlet of the dryer from being clogged with the powder by...	09/06/2005
6526675	Methods of using natural products as dewatering aids for fine particles A method of dewatering fine particulate materials is disclosed. In this method, an aqueous slurry of fine particles is treated with appropriate hydrophobizing reagents so that the particulate material becomes moderately hydrophobic. A lipid of vegetable o...	03/04/2003
6421931	Method and apparatus for drying iron ore pellets In the present method of drying iron ore pellets, e.g., magnetite pellets, moisture-containing iron ore pellets are formed into a bed comprising a multiplicity of the pellets. A current of drying gas is forced through the bed of pellets to at least partia...	07/23/2002
6393728	Method and apparatus for drying pulp A fiber containing pulp, such as chemical pulp, mechanical pulp, thermomechanical pulp, TMP, de-inked water, or fiber containing sludge, is dried in an effective and efficient manner. The wet pulp is first dewatered mechanically, such as by using a drum o...	05/28/2002
6226889	Continuous rotary vacuum retort apparatus and method of use The present invention relates to a method and apparatus for use in removing at least one volatile contaminant from contaminated material by using a rotary vacuum retort during high temperature and vacuum processing. The loading and unloading are performed...	05/08/2001
6163980	Method and apparatus for continuous dehydration of sludge A method and apparatus is provided for continuous dehydration of sludge wherein, prior to dehydration, water is mechanically removed from the sludge, and the thus obtained sludge of cutting consistency is mixed with heated spheres. Dehydration is carried ...	12/26/2000
6148543	Method and apparatus for drying iron ore pellets In the present method of drying iron ore pellets, e.g., magnetite pellets, moisture-containing iron ore pellets are formed into a bed comprising a multiplicity of the pellets. A current of drying gas is forced upwardly through the bed of pellets to at lea...	11/21/2000
6105275	Continuous rotary vacuum retort apparatus and method of use The present invention relates to a method and apparatus for use in continuously loading material to be treated into a rotary vacuum retort and continuously unloading one or more vapors or similar volatile substances and treated material out of the rotary ...	08/22/2000
6006442	Methods for dewatering solid-liquid matrices The present invention provides novel processes for the dewatering of a wide variety of solid-liquid matrices, including primary and secondary sludge, which involve the simultaneous application of pressure and heat to the solid-liquid matrices....	12/28/1999
5960559	Process and apparatus for drying material A process and apparatus for drying material, in which a previous dried material is mixed into the wet material to be dried to produce a dried mixture of different particle sizes. The process for drying material requires less industrial equipment implement...	10/05/1999
5852882	Food drying apparatus The field of the invention is food drying apparatus and methods. In particular, the invention discloses a rotary dryer which dries food granules, such as rice, by rotation within a perforated cylindrical barrel, to prepare the rice for packaging. The drye...	12/29/1998
5819430	Bead dewatering apparatus and method Apparatus and a method for de-watering a bead suspension of fragile beads having a high water content suspended in a liquid includes a staging vat, a metering vat, and a de-watering vat. The application of pressurized gas to the staging vat causes the bea...	10/13/1998
5775004	Process and apparatus for drying a solid-liquid mixture A process and an apparatus is disclosed for drying sludge or other materials, more specifically, sewage sludge, in which a mixture of base material and wet material is introduced to a drier and passing hot gas or hot air passed over the mixture. The proce...	07/07/1998
5656179	Device for continuous filtration and drying of a solid suspension The device for continuous filtration and drying of a solid suspension comprises a belt filter (1) and downstream a belt drier (2). By means of a porous conveyor belt (3) the filter cake generated in the belt filter (1) is conveyed further into the belt dr...	08/12/1997
5617649	Device and method for drying fluorescent material A device and method for drying a fluorescent material are provided. The device includes a container having a predetermined space for containing a fluorescent material, a first driver for rotating the container, a heater for heating the container, a vacuum...	04/08/1997
5570517	Slurry dryer An improved slurry dryer of the type having a plurality of beater blades carried on a rotating shaft in a cylindrical housing, the improvement in combination therewith of a plurality of scraper blades mounted on at least one disk carried by the rotating s...	11/05/1996
5548906	Vaporizing and concentration drying apparatus and method Vaporizing and concentration drying apparatus and method are disclosed. The apparatus and method prepare good quality of condensed water and save evaporation energy and are wide used in making contaminated waste water become distilled water and in purific...	08/27/1996
5519948	Process for the production of granules suitable as wetting agents, detergents and/or cleaning products A process for the production of pourable, free-flowing granules which are suitable for use as wetting agents, detergents or cleaning products from aqueous solutions or suspensions of such materials in a fluidized-bed spray granulation apparatus employing ...	05/28/1996
5365676	Two-stage sludge drying apparatus and method A system for drying municipal sludge to reduce its moisture content and harmful pathogens to a level suitable for direct land application includes a cellular conveyor belt defining pockets which are filled with moist sludge and which is carried through mu...	11/22/1994
4974335	Method and apparatus for drying sewage sludge A method and apparatus for drying sewage sludge includes diverting steam escaping during the drying of the sewage sludge and feeding the steam to a compressor. Thermal energy of the compressed and therefore heated steam is supplied to the sewage sludge to...	12/04/1990
4756092	Method and apparatus for drying sludge An apparatus and method for removing water from sludge waste material is provided. A layer of sludge is disposed upon an endless screen belt which is in turn dragged across a heated plate such that water in the sludge is evaporated and escapes from the sl...	07/12/1988
4316331	Methods for mechanically dewatering peat Wet peat is dewatered mechanically by conditioning a peat slurry in a decanter centrifuge producing an effluent containing peat particles, and a peat sludge. The sludge thereafter is subjected to a mechanical pressing operation....	02/23/1982

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Class 34/424 - Of slurry or suspension