| Patents for B03B 9 - General arrangement of separating plant, e.g. flow sheets (5,723) |
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| 07/16/1991 | US5032289 In situ off-shore processing of urban sewage without using or contaminating urban land |
| 07/11/1991 | DE4103715A1 Plant for treating household and industrial waste - has bunker for supplying waste, fermentation reactor, carbonisation drum and second fermentation reactor |
| 07/11/1991 | DE4000151A1 Mixing solids with gas and liq. into streams - whose frictional interaction separates components |
| 07/11/1991 | DE4000150A1 Sepg. and washing solids in conveyor liq. streams - includes impinging particles obliquely in tapering friction chamber |
| 07/04/1991 | DE3942750A1 Container for removing problem rubbish - has through grip hole with glove attached and two movable telescopic parts |
| 07/03/1991 | EP0435303A2 Vibratory sieve |
| 07/02/1991 | US5027722 Process and device for processing slag and other combustion residues from waste incineration plants |
| 06/27/1991 | WO1991008836A1 A method and an apparatus for crushing slags resulting from steel production |
| 06/26/1991 | EP0433638A2 Method and plant for the disposal of partly recycled refrigerators |
| 06/25/1991 | US5026432 Vacuum; pneumatic airstream; continuous collection; closed system, hazardous materials; polychlorinated biphenyls |
| 06/25/1991 | US5025929 Air classifier for light reusable materials separation from a stream of non-shredded solid waste |
| 06/19/1991 | EP0432513A1 Method of scrapping cars |
| 06/18/1991 | US5024770 Using contaminated groud water; bviodegradable material for agricultural products and clean refuse derived fuel |
| 06/18/1991 | US5024335 Automatic sorter |
| 06/18/1991 | US5024169 Successive size and density classifications |
| 06/18/1991 | CA1284977C Recovery of useful materials from refuse fuel ash |
| 06/12/1991 | EP0431582A1 Process for separating and recovering lead, rubber and copper wires from waste cables |
| 06/11/1991 | US5022983 Process for cleaning of coal and separation of mineral matter and pyrite therefrom, and composition useful in the process |
| 06/11/1991 | US5022982 Rotary drum solid waste air classifier |
| 06/11/1991 | US5022892 Fine coal cleaning via the micro-mag process |
| 06/07/1991 | CA2031655A1 Process for separating and recovering lead, rubber and copper wires from waste cables |
| 05/29/1991 | EP0429031A2 Device for separating, in particular, oil contaminated waste comprising steel or sheet metal and paper |
| 05/28/1991 | US5019245 Method for recovery of hydrocarbons form contaminated soil or refuse materials |
| 05/28/1991 | US5019161 Process for stripping plated plastic materials |
| 05/28/1991 | CA1284471C Separation process |
| 05/22/1991 | EP0428194A1 Process for treating Jarosite containing residues |
| 05/08/1991 | CN1051263A System for reclaiming material from waste electric wire |
| 05/02/1991 | WO1991005572A1 Method for disinfecting medical materials |
| 05/02/1991 | EP0425396A1 Method and device for treating waste in order to recover organic material |
| 05/02/1991 | EP0424668A1 Plant for recovering inert material contained in toxic-noxious industrial waste |
| 04/30/1991 | US5011087 Method of and apparatus for continuously treating comminuted synthetic plastic containers and products having contaminants bonded thereto for recycling purposes |
| 04/28/1991 | CA2028308A1 Waste processing for organic matter recovery and apparatus for same |
| 04/25/1991 | CA2027973A1 Method of reprocessing jarosite-containing residues |
| 04/24/1991 | EP0423606A1 Process for the preparation of domestic, industrial or similar waste for the extraction of cellulose materials |
| 04/23/1991 | US5009672 High pressure compression, anaerobic fermentation, screening |
| 04/23/1991 | US5009370 Municipal solid waste material sorting trommel system |
| 04/17/1991 | EP0422501A1 Recycling process and device for oil contaminated working stocks |
| 04/17/1991 | CA2027385A1 Method for processing domestic, industrial and other similar waste with the production of a cellulose material |
| 04/16/1991 | CA1283080C Sorting installation for valuable substances, particularly dry garbage |
| 04/09/1991 | US5006029 Receiving assembly for solid waste disposal system |
| 04/06/1991 | CA2000251A1 Method for recovering and partially upgrading bitumen from oil sands, tar sands, oil shales, h eavy oil reservoirs |
| 04/03/1991 | EP0420437A1 Opaliform procellanite and process for the preparation thereof |
| 04/03/1991 | EP0420367A1 Process and device for the disposal of lamps containing mercury |
| 04/03/1991 | CN2074204U Garbage separator |
| 04/02/1991 | CA2000068A1 Process for oil sands processing |
| 03/19/1991 | CA2025190A1 Opaliform porcellanite and process for the preparation thereof |
| 03/12/1991 | US4998675 Solid waste processing unit |
| 03/07/1991 | DE3928427A1 Removing heavy metals, esp. mercury from contaminated earth - by repeated washing and fractionation forming conc, fraction for furnace |
| 02/27/1991 | EP0252938B1 An arrangement for the separation of waste materials |
| 02/25/1991 | WO1991002592A1 Process for treating contaminated soil |
| 02/25/1991 | CA2064800A1 Process for treating contaminated soil |
| 02/21/1991 | DE3926996A1 Disposal of domestic refuse - by mixing it with slurry, then drying and subsequently burning mixture |
| 02/14/1991 | DE3926762A1 Refuse delivery to incineration system - with preparation in two or more parallel lines and delivery to intermediate hopper for batching |
| 02/07/1991 | CA2002696A1 Air classifier for light reusable materials separation from a stream of non-shredded solid waste |
| 02/06/1991 | EP0410971A1 Process for treating contaminated soil |
| 02/05/1991 | US4990244 Recycling the components of used single use human waste collecting and/or absorbing products |
| 01/31/1991 | DE3923971A1 Wire recovery from used tyres - uses deep cooling and hammering to liberate wire for size sorting |
| 01/29/1991 | WO1991001817A1 Process and device for separating a mixture of substances and use of the device |
| 01/29/1991 | US4988044 Magnetic separation; surge hopper; comminution; air classification aspirator; detinning |
| 01/29/1991 | CA2027594A1 Method and apparatus for the separation of a material mixture and use of the apparatus |
| 01/16/1991 | EP0407679A1 Mobile device for collecting and processing plastic containers and/or a heterogeneous plastic material |
| 01/15/1991 | CA1279051C Tire processing apparatus and method |
| 01/08/1991 | US4983157 Centrifugation system using static layer |
| 12/27/1990 | EP0403695A1 Process and plant for recycling scrap appliances |
| 12/25/1990 | US4979682 Reclaiming synthetic |
| 12/19/1990 | EP0402737A2 Process and apparatus for the treatment of sludges containing heavy metals |
| 12/13/1990 | WO1990014892A1 Method of recovery of hydrocarbons from contaminated soil or refuse materials |
| 12/13/1990 | DE3918672A1 Cleaning and prepn. of hoed crops - by continuous process in which part of process water is constantly removed and replaced by similar quantity of fresh water |
| 12/12/1990 | EP0377718A4 Incineration residue treatment process and apparatus |
| 12/11/1990 | US4976781 Mineral recovery process |
| 12/06/1990 | WO1990014890A1 Method and device for the treatment of waste |
| 12/06/1990 | DE4016844A1 Disposal system for sludge from road drains - removes organic material and sand and gravel from sludge to reduce bulk before dumping |
| 12/04/1990 | US4975182 Waterflow differential electrical charging process for ores |
| 12/04/1990 | US4974781 Method and apparatus for preparing paper-containing and plastic-containing waste materials for component fraction separation |
| 11/29/1990 | DE3916866A1 Treatment of domestic waste, by sepg. into specified particle sizes - small particles are used as land fill, medium particles are composed with active sludge, larger particles are sorted to remove scrap metal |
| 11/27/1990 | US4972956 Method of removing carbonaceous particles, essentially free of pyritic sulphur, from an aqueous coal slurry |
| 11/15/1990 | DE3915400A1 Removal of chloro:fluoro:carbon gas from insulation foam - a pulveriser and compressor in separate airtight chambers extract gas which is removed, collected and condensed to form pure liquid CFC |
| 11/13/1990 | US4969775 Process of dressing contaminated soils |
| 11/07/1990 | CN1010286B Wet selecting system for hollow glass microbead from powder coal ash |
| 10/31/1990 | EP0394756A1 Method for collection, transport and deposition of slag and flyash from coalfired power stations |
| 10/31/1990 | EP0394391A1 Process and device for processing slag and other combustion residues from waste incineration plants. |
| 10/31/1990 | EP0394316A1 Process for beneficiating particulate solids. |
| 10/31/1990 | DE3914362A1 Disposal of old paint cans - by machine which washes cans with jets of cleaning liquid |
| 10/30/1990 | US4966608 Process for removing pyritic sulfur from bituminous coals |
| 10/25/1990 | CA2015210A1 Process for the water-saving ecologic collection, transport and deposition of slag and flyash from coal-fired thermal power stations with the simultaneous utilization of physical and chemical properties |
| 10/23/1990 | US4964981 Screening, grinding, multistage flotation |
| 10/23/1990 | US4964577 Cutting, screening, separation, vibration |
| 10/18/1990 | WO1990012103A1 Way and plant for producing alcohol for motor fuel from cellulose bearing waste and rest materials |
| 10/11/1990 | DE3928528A1 Trough for washing cement out of unused concrete - is fitted with screw conveyor to remove sand and gravel |
| 10/11/1990 | DE3911326A1 Process for the reconstitution of refrigerating unit housings comprising mouldings of plastic |
| 10/10/1990 | EP0391324A1 Vibratory sorter |
| 10/09/1990 | US4961756 High ash content |
| 10/04/1990 | WO1990011144A1 Elimination of and beneficial use of harmful wastes |
| 10/03/1990 | EP0389734A1 Manipulating and selecting unit for recycling pressed or not bodies obtained from plastic material containers |
| 10/03/1990 | CN1009808B Process and device for working up household, industrial and other similar waste |
| 10/02/1990 | US4960509 Ore flotation device and process |
| 09/27/1990 | DE3914205C1 Prepn. of building rubble contg. inorganic components - by breaking up material, adding sand and removing organic material |
| 09/27/1990 | DE3909380A1 Process and apparatus for the disposal and processing of fluorescent lighting tubes and gas-pressure lamps |
| 09/20/1990 | DE3908185A1 Process and apparatus for treating contaminated soil materials |
| 09/18/1990 | CA1274202A1 Process for controlling fines entrainment while drying solids |