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| Number | Title | Issue Date |
| 7959435 | Method and apparatus for reducing NOemissions in rotary kilns by SNCR A method of operating a mineral processing kiln includes introducing a quantity of a selective non-catalytic reduction (SNCR) reducing agent into the kiln. The SNCR reducing agent may be a solid, liquid, or a gas. A mineral processing kiln modified for the implement... | 06/14/2011 |
| 7033167 | Device for purifying and/or decontaminating polyester The invention relates to an apparatus for cleaning and/or decontaminating polyester, in particular polyethylene terephthalate (PET). The apparatus has an at least partially heated rotary tubular furnace to be fed with a mixture of polyester and an alkaline material ... | 04/25/2006 |
| 6951458 | Reactor combustion control method and reactor A reactor combustion control method using a high temperature air combustion technology capable of reducing a temperature difference in a reactor without producing cracking and caulking in reaction tubes and the reactor controlled by using the method, the reactor whe... | 10/04/2005 |
| 6860735 | Rotary kiln Disclosed is a rotary kiln that can be used efficiently in drying, dry distillation and incineration of various garbage and industrial wastes. The rotary kiln comprises a cylindrical furnace body (10) disposed to incline at a small angle from the horiz... | 03/01/2005 |
| 6685465 | Drum heater with hot gas conduit segments, in particular for asphalt recycling A rotary drum heater for mixing asphalt with a hot gas introduced into the drum by gas burners is disclosed. The drum has an inlet opening for material to enter the drum to be processed and an outlet opening for material to exit. The hot gas is blown into... | 02/03/2004 |
| 6061924 | Batch sludge dehydrator A dehydrating apparatus includes a chamber for receiving wet material to be dehydrated. A rotatably-mounted agitator is provided with the chamber. The agitator is adapted to agitate material in the chamber when the agitator rotates in a first direction an... | 05/16/2000 |
| 6052917 | Vacuum rotary dryer A vacuum rotary dryer capable of charging solids into a rotary drum and discharging the solids from the rotary drum without any manual operation contacting solids with the hands is provided. A rotary drum (23) is mounted thereon with a gas flow pipe (46) ... | 04/25/2000 |
| 5997288 | Apparatus for thermal removal of surface and inherent moisture and limiting rehydration in high moisture coals A flighted, horizontally inclined rotary retort, heated externally by flame, hot gases, steam or other sources of heat. The retort shall have sufficient flight area to transport the coal through the retort in the predetermined time. The coal being process... | 12/07/1999 |
| 5946815 | Apparatus for roasting legumes An apparatus and method for roasting legumes such as soybeans to enhance their nutritional properties. Raw legumes are introduced to a roaster having an oven section and a steeping section downstream of the oven section. The raw legumes are heated to a se... | 09/07/1999 |
| 5873714 | Rotary kiln having a lining with a wave-shaped inner face A kiln for pyro-processing a variety of materials, such as cement, lime, lime sludge, clay, shale, magnesite, dolomite, and other minerals, includes a continuously-rotated, cylindrical, elongated shell having a feed end for receiving the material, a proce... | 02/23/1999 |
| 5806442 | Apparatus for feeding solid wastes into a rotary kiln A feeding apparatus for feeding whole tires into a cement kiln comprising a feed opening in the shell of the kiln, a passageway including a sleeve extending within and outside the kiln, an arcuate sector valve device for closing the passageway and timed t... | 09/15/1998 |
| 5769007 | Bulk material heating chamber equipped with heating tubes A heating chamber or low-temperature carbonization drum has an interior receiving bulk material or trash and has a longitudinal axis about which the heating chamber or drum is rotatable. A number of heating tubes through which a heating gas can flow in a ... | 06/23/1998 |
| 5727483 | Rotary kiln incinerator A rotary incinerator for disposal of industrial waste is provided. The incinerator is slopedly and rotatably disposed to a slant support and has a plurality of spirally arranged tubular conveying ribs on entire inner periphery for squeezedly transmitting ... | 03/17/1998 |
| 5662052 | Method and system including a double rotary kiln pyrolysis or gasification of waste material A method of destructively distilling an organic material in particulate form wherein the particulates are introduced through an inlet into one end of an inner rotating kiln ganged to and coaxial with an outer rotating kiln. The inner and outer kilns defin... | 09/02/1997 |
| 5228803 | Apparatus and method for thermally stripping volatile organic compounds from soil using a recirculating combustible gas A transportable thermal stripping system for removing volatile organic compounds (VOC) from soil is provided. The system includes a vessel in which contaminated soil is placed into contact with a hot gas. The gas is discharged from the vessel and ambient ... | 07/20/1993 |
| 5207009 | Method and apparatus for increasing dehydrator efficiency A dryer consists of a horizontal drum rotated about its horizontal axis, containing flighting around its periphery, and coupled with a heat source, all of which is well known in the prior art. The dryer is open at only one end and provides an inner tubula... | 05/04/1993 |
| 5122190 | Method for producing a hydraulic binder A method for producing a hydraulic binder using partially calcined raw meal entrained in the kiln off gases. The raw meal flow form the lowermost cyclone is interrupted at or near the junction of the meal chute, kiln inlet and riser duct. This flow interr... | 06/16/1992 |
| 5052858 | Apparatus and method for thermally stripping volatile organic compounds from soil An apparatus and method are provided for removing volatile organic compounds from soil in order to comply with environmental regulations. The apparatus is comprised of a rotating drum in which the contaminated soil is loaded. The drum contains an auger me... | 10/01/1991 |
| 4787938 | Countercurrent drum mixer asphalt plant A drum mixer asphalt plant is provided with a rotatable cylinder 10 in which virgin aggregate, recycle material and liquid asphalt are mixed to produce an asphaltic composition and the hot gas stream for heating and drying the materials flow in countercur... | 11/29/1988 |
| 4781580 | Indirectly heated rotary tubular kiln In a rotary tubular kiln for carrying out gas-solids reactions, comprising an indirectly heated, rotatable reaction tube with inner baffles which is provided with charging and removing devices for solid and gas inlet and outlet lines, the improvement whic... | 11/01/1988 |
| 4690639 | Constant pressure variable orifice burner nozzle assembly In a burner gun of the type including a conduit having a gas inlet supplied with a gas and an outlet, a burner nozzle assembly includes an outlet plate secured to the outlet of the gas conduit and having a plurality of circumferentially arranged cylindric... | 09/01/1987 |
| 4648836 | Rotary retort furnace A continuous rotary retort furnace includes an outer shell having first and second ends. A retort assembly extends through openings in the first and second ends. The retort assembly is supported by support devices at both ends external of the shell. The r... | 03/10/1987 |
| 4639216 | Grain roasting machine and method A grain roasting machine includes an elongated hollow roasting drum mounted for rotation about its fore-and-aft longitudinally-extending central axis and a burner for producing a roasting flame within the drum in a direction extending generally longitudin... | 01/27/1987 |
| 4592150 | Grain roasting drum construction A grain roasting machine includes an elongated hollow roasting drum mounted for rotation about its fore-and-aft longitudinally extending central axis and a burner for producing a roasting flame within the drum in a direction extending generally longitudin... | 06/03/1986 |
| 4586270 | Bed thickness levelling device for a cooling column In a cooling column the feed material to be dried or cooled is intermittently transferred from any one sieve bottom to a subjacent sieve bottom as by tilting individual sectors of the respective sieve bottoms. As a result, the feed material comes to rest ... | 05/06/1986 |
| 4559720 | Particle roaster A roaster for grain or other particulate material. A chute is provided to feed particles adjacent the bottom of a rotating drum to reduce particle bouncing and unwanted agglomeration and to improve roasting uniformity. Vanes are provided longitudinally wi... | 12/24/1985 |
| 4411074 | Process and apparatus for thermally drying oil well cuttings The present invention relates to a process and apparatus for drying oil well cuttings. More particularly, the present invention relates to the direct thermal treatment of oil well drill cuttings whereby the cuttings will be freed from any excess liquid an... | 10/25/1983 |
| 4334366 | Sonic energy perforated drum for rotary dryers A perforated drum serves as a drying chamber into which moist particles are loaded. The drum is rotated about a horizontal axis to tumble the particles. Sonic energy and hot pulsating gas from a pulse jet engine are supplied to a plenum opening into the d... | 06/15/1982 |
| 4290750 | Cementitious products A rotating kiln or cooler for use in the manufacture of cementitious materials comprises a tubular body (1) mounted for rotation about the longitudinal axis thereof, a material being fed into the body at one end and removed at the other end. Air or combus... | 09/22/1981 |
| 4285773 | Apparatus and process for recovery of hydrocarbon from inorganic host materials In the apparatus, concentric, radially spaced tubes are secured to each other and rotated about a common horizontal long axis. Selectively placed and configured lift elements repeatedly lift and drop feed material in the two tubes. Advance elements cause ... | 08/25/1981 |
| 4262429 | Method of and apparatus for drying materials An apparatus for drying two materials comprising two coaxial cylinders, means for rotating the coaxial cylinders, means for introducing a first material into one end of the inner cylinder, means for heating the first material, means for moving the first m... | 04/21/1981 |
