| Patent Number |
Title Of Patent |
Date Issued |
| 4779992 |
Lime slaker |
October 25, 1988 |
| A slaker includes a substantially straight, circular sidewall, a substantially flat bottom, and a top. A solid and a liquid feed inlet are disposed at the top of the vessel and an outlet is disposed at the bottom of the vessel. Apparatus is provided for mixing the solid and the liquid |
| 4760968 |
Integrated dust containment system for rotary crusher/breakers and the like |
August 2, 1988 |
| An integrated dust containment system for machines such as rotary crusher/breakers, vibratory screens and the like of the type use in sizing dusty bulk materials, such as for coal, ore and the like. A substantially airtight enclosure having integral air filter means and fan means is |
| 4714097 |
Dust containment system for bulk cargo containers |
December 22, 1987 |
| A method and apparatus for the containment of dust within a bulk cargo container such as a ship or barge hold. A horizontal stream of ambient air is directed across the hatch opening by a plurality of interconnected air curtain modules which captures fugitive dust along its path. A plura |
| 4699187 |
Dust control in hoppers |
October 13, 1987 |
| A bulk material receiving hopper is provided with a dust containment system which includes sloped shield plates positioned adjacent a top portion of the hopper to effectively close-off substantially all of the open space thereacross. Restricted material openings are defined by the shield |
| 4689007 |
Process of thermally treating lump or agglomerated materials on a travelling grate |
August 25, 1987 |
| The thermal treatment is effected in that hot gases are passed through the charge bed. Hot gases are passed downwardly through the charge bed in heat treating zone, oxygen-containing cooling gases are passed upwardly through the charge bed in a cooling zone, and the cooling gases which h |
| 4683029 |
Circular solvent extractor |
July 28, 1987 |
| A circular solvent extractor useful in a commercial process for the removal of bitumen from tar or oil sands or other solvent extraction processes requiring high tonnage throughput. The extractor comprises two major segments that are stationary, namely, a ring-shaped roof member and a |
| 4655401 |
Rotary car dumper with lump breaker apparatus |
April 7, 1987 |
| A lump breaker apparatus for a rotary car dumper includes a porous barrier means in the form of a grizzly element, having sized openings therein and positioned in the flow path of the discharged bulk material prior to its entry into the hopper pit. Motorized impact means, preferably rota |
| 4626418 |
Removal of SO.sub.2 from SO.sub.2 -containing gases |
December 2, 1986 |
| A process for the removal of SO.sub.2 from a gaseous mixture containing SO.sub.2 which comprises contacting said gaseous mixture containing SO.sub.2 with a mixture containing a sugar and at least one alkaline earth compound selected from the group consisting of calcium and magnesium |
| 4609321 |
Rotary car dumper with dust collection system |
September 2, 1986 |
| The dust collection units in a rotary railroad car dumper installation are mounted over the hopper pit along one or both sides of the cylindrical, rotatable dumper frame so that dust ladened air can be sucked directly into the dust collection units without the need for duct work and the |
| 4603225 |
Process for separating dimethyl ether from a hydrocarbon mixture containing the same |
July 29, 1986 |
| A process for separating dimethyl ether from a hydrocarbon mixture which comprises contacting the hydrocarbon mixture with an aqueous solution containing a polar oxygenated hydrocarbon having a polarity of about 1.4 to about 2.0 Debyes. |
| 4575055 |
Circular traveling grate machine |
March 11, 1986 |
| A circular traveling grate machine includes rotatable, inner and outer, rail mounted, side frame members forming the sidewalls of an annular hearth region therebetween. A plurality of individually tiltable pallets are positioned in the hearth region and are movable with the side frames |
| 4573637 |
Accelerating slugs of liquid |
March 4, 1986 |
| Discrete volumes, or slugs, of liquid are accelerated to high velocities utilizing energy stored by compressing the liquid. Liquid is forced into a pressure vessel already filled with liquid to effect the compression. A slug of liquid is ejected from the pressure vessel into a cumulation |
| 4572484 |
Pallet construction for traveling grate machines |
February 25, 1986 |
| A pallet construction for use in a circular traveling grate machine of the type having rotatable inner and outer side frames which move with the pallets on either side thereof. Various restraining and float means associated with the pallet hanger brackets and their respective axles, as |
| 4563273 |
Process and apparatus for separating fines from micella streams |
January 7, 1986 |
| There is disclosed a screening assembly for separating fines from a miscella stream including same and comprised of a screening element angularly disposed in a housing assembly beneath an inlet conduit means and over a miscella collection zone. |
| 4563195 |
Method for treatment of tar-bearing fuel gas |
January 7, 1986 |
| Coal tar resulting from the gasification of coal in an industrial gas producer, instead of being discarded as waste, is condensed from the hot fuel gas by a mist-like spray of water to produce a fog-like suspension of tar mixed with the fuel gas. This mixture flows to an electric pre |
| 4548315 |
Tethered vehicle for moving bulk material |
October 22, 1985 |
| A tracked vehicle is tethered so that as it skids on a pile of bulk material, the cleated tracks transfer the material toward the tethered end. The tethering rope hitch point on the vehicle is translatable laterally to effect controlled sideward skiding for sweeping bulk material fro |
| 4512260 |
Train holding apparatus with means for relieving the load imposed thereon during disengagement |
April 23, 1985 |
| The piston rod of at least one hydraulic cylinder is axially connected to a pivot pin about which the car holding arm of a car holding device rotates in a vertical plane to engage the couplings between railroad cars. In the case of a single hydraulic cylinder, the inner chamber of the cy |
| 4506781 |
Self training belt conveyor with digging elements |
March 26, 1985 |
| An endless belt with bottomless buckets or other gripping elements bolted to its outer surface at spaced locations, has endless wire ropes each loosely received in a longitudinal bore formed in confronting faces of two rows of discrete blocks of resilient material bolted to the inner sur |
| 4501539 |
Apparatus for removing the liquid phase from a slurry of fine granular material |
February 26, 1985 |
| The drain openings in movable and fixed platens in a press unit are wider than the largest praticle in a slurry to be dewatered and are formed by arcuate ribs dimensioned to resist the transverse forces developed as the granular particles from bridges across the slotted drain openings in |
| 4490237 |
Process for recovering heat from the combustion of residual carbon in oil depleted shale |
December 25, 1984 |
| As hot oil depleted shale from an indirect retorting process passes downward through a vertical shaft furnace, the residual carbon in the shale is burned out in the upper portion by air fed into the top of the furnace. The temperature of combustion is moderated by an inert gas also f |
| 4487547 |
Method for random car train positioning |
December 11, 1984 |
| A car positioning device for dumping of random cars in a rotary car dumper, and a method for directly positioning cars within a rotary dumper, where the car positioning device, movable on a trackway parallel to a track portion carrying railroad cars, has a carriage base and a pivoted car |
| 4479808 |
Pokehole system for fixed bed gasifier and pokehole unit |
October 30, 1984 |
| A fixed bed gasifier has an annular series of spaced pokehole units thereabout, each unit of which is an outwardly and upwardly extending tapered tube with an end closure having an eccentrically positioned hole through which a poker may be inserted to pass through the unit for poking |
| 4479749 |
Rotary car dumper installation with integral dust collection |
October 30, 1984 |
| The dust collection units in a rotary railroad car dumper installation are mounted over the hopper pit along each side of the cylindrical, rotatable dumper frame so that dust ladened air can be sucked directly into the dust collection units without the need for duct work and the collecte |
| 4475987 |
Method of and apparatus for the mixing and processing of fragile material and fragmentel solids |
October 9, 1984 |
| Fragile agglomerates with crushed rock fragments, such as fines which are subsequently agglomerated and which result in the crushing of rock fragments, such as oil shale prepared for retorting are mixed and delivered onto conveying means, such as a travelling grate by charging the ro |
| 4448667 |
Process for solvent extraction of bitumen from oil sand |
May 15, 1984 |
| A continuous process for extraction of bitumen from oil sand by a hydrocarbon solvent wherein the sand is classified so as to produce a major coarse fraction and a minor fines fraction, with both fractions contacted with solvent to wash miscella therefrom, and wherein the major coars |
| 4444539 |
Apparatus for clamping a railroad car in a rotary car dumper |
April 24, 1984 |
| A clamp for securing a railroad car in a rotary car dumper includes a guide pipe member mounted adjacent the section of track carried by the rotatable dumper frame, a clamp pipe member telescopically mated with the guide pipe member and a clamping jaw member extending laterally from the |
| 4439307 |
Heating process gas for indirect shale oil retorting through the combustion of residual carbon i |
March 27, 1984 |
| Hot oil depleted shale from an indirect oil shale retorting process is charged into the top of a vertical shaft furnace together with sufficient oxygen to combust the residual carbon in the shale. Recycle process gas is fed into the bottom of the furnace for direct heating by the spent s |
| 4436611 |
Process for heating recycle gas in oil shale retorting |
March 13, 1984 |
| Recycle gas for the indirect retorting of oil shale, is heated after the oil has been recovered from the gas, utilizing the residual carbon in hot oil depleted shale. The hot oil depleted shale is charged into a vertical shaft furnace where it is combusted by the introduction of air into |
| 4425220 |
Method of and apparatus for processing of oil shale |
January 10, 1984 |
| In the indirect method of retorting oil shale highly heated gases produced out of contact with flames in a heat exchanger are introduced into the retort and release oil vapor and high-value, high BTU gas and oil vapor from the shale which mix with the hot gas so introduced into the retor |
| 4422901 |
Apparatus for the continuous solvent extraction of bitumen from oil-bearing sand |
December 27, 1983 |
| In a continuous process for the extraction of crude refinery stock from oil-bearing sand, miscella produced earlier in the process is returned and mixed with oil-bearing sand to provide a feed slurry which, after heating, is separated into two streams, one of which is comprised predomina |
| 4420404 |
Process for dewatering fine granular materials |
December 13, 1983 |
| A process for the dewatering of fine granular material is disclosed. During compression of the material, fluid is expressed and a small percentage of the material is intentionally permitted to escape through a self-cleaning opening in the apparatus. By maintaining the smallest dimension |
| 4412976 |
Adjustable wheel assembly in a rotary solvent extractor |
November 1, 1983 |
| There is disclosed an improved wheel housing assembly comprised of a wheel, a wheel axle and an axle housing wherein the wheel axle is formed of wheel and housing shaft portions with the axis of the wheel shaft portion being parallel to and slightly displaced or offset from the axis of t |
| 4409740 |
Yellowcake (U.sub.3 O.sub.8) dust, water and heat recovery process and apparatus |
October 18, 1983 |
| A process and apparatus for the essentially complete recovery of heat, process fluid and yellowcake (U.sub.3 O.sub.8) dust particles normally lost during the drying of yellowcake slurry. The off-gases, consisting of noncondensable gases vaporized fluid, and entrained yellowcake particles |
| 4408987 |
Circular traveling grate machine for process requiring minimum gas leakage |
October 11, 1983 |
| A traveling grate consisting of individual pallets each supported on four wheels and independently connected to continuous side walls so that the pallets can pivot down away from and back toward the continuous sidewalls as the rear wheels follow a depressed portion of the trackway in the |
| 4405050 |
Quick roll adjustment for a roller screen conveyor |
September 20, 1983 |
| A roller adjustment apparatus provides for the independent adjustment of spacing between any two adjacent rigidly spaced apart rollers without affecting the spacing of any of the other rollers in a roller screen conveyor. A support block of the apparatus, which rotatably supports an |
| 4389243 |
Method for the flash oxidation of metal concentrates |
June 21, 1983 |
| A burner for the flash oxidation of particles of metal concentrates has three downwardly directed, concentrically mounted tubes each having a venturi nozzle on the discharge end thereof. Finely divided metal concentrates introduced into the annular space between the inner tube and th |
| 4388153 |
Coke spillage removal device |
June 14, 1983 |
| A coke oven battery servicing apparatus includes a coke catching and collecting bucket movable from a first position adjacent the oven to a second position clear of the oven and a coke guide cage having an opening therein which is complementary to the bucket. When in the first position |
| 4381989 |
Method of and apparatus for the mixing and processing of fragile material and fragmented solids |
May 3, 1983 |
| Fragile agglomerates with crushed rock fragments, such as fines which are subsequently agglomerated and which result in the crushing of rock fragments, such as oil shale prepared for retorting are mixed and delivered onto conveying means, such as a travelling grate by charging the ro |
| 4381988 |
Fine particulate removal from oil shale on a travelling grate retort |
May 3, 1983 |
| In a process for the removal of fines from a bed of oil bearing shale in a travelling grate retort, a fluid such as air, inert gas or process gas is drafted through the bed in order to entrain in the fluid substantially all of the fines in the bed. The fines are then evacuated from the b |
| 4377220 |
Automatic rail clamp |
March 22, 1983 |
| An automatic rail clamp is provided with an indicator for visibly showing the extent of wear of the replaceable clamping jaw inserts together with a fulcrum shaft having opposed eccentrics about which the jaws rock. As wear of the inserts develops, rotation of the fulcrum shaft is effect |
| 4376052 |
Fluid manifold assembly for solvent extractor |
March 8, 1983 |
| There is disclosed a manifold assembly for a rotary solvent extractor formed of an elongated fluid distribution trough or conduit divided into a plurality of fluid distribution subsections by intermediate gate members wherein each fluid distribution subsection is in fluid communication w |
| 4373946 |
Process of heat-treating pellets |
February 15, 1983 |
| An improved process for heat-treating pellets in a pelletizing machine in which hot gases are generated and passed through a bed of pellets includes charging solid carbonaceous fuel onto the surface of the pellet bed and burning the carbonaceous fuel to generate at least a portion of the |
| 4365725 |
Basket with swing away double locking handle |
December 28, 1982 |
| A market basket is provided with a U-shaped handle having outwardly projecting locking tabs. The locking tabs, each comprised of a support bar and a locking bar, are slidably and rotatably received in vertical slots in the side walls of the basket. With the locking tab at the bottom of t |
| 4363411 |
Hammerhead crane with plural shuttle trolleys, a load trolley and movable counterweight means |
December 14, 1982 |
| A hammerhead type of crane has a structural tower with opposed structural cantilevers extending horizontally therefrom and there is a horizontal track along which a load carrying trolley may move through the tower between limits near the outer ends of the cantilevers and a second hor |
| 4359417 |
Process for extracting oleaginous seed materials particularly cottonseed with aqueous alcohol |
November 16, 1982 |
| There is disclosed a process for extracting oleaginous seed material consisting in part of solubles comprising carbohydrates, fatty-acids, non-oil lipids and oils with a less concentrated aqueous solution of a monohydric alcohol selective for the extraction of the solubles other than |
| 4354792 |
Train positioner |
October 19, 1982 |
| There is disclosed a train positioner for sequentially advancing a string of railroad cars to a rotary car dumper in a step-by-step and a car-by-car sequence. Each of the cars has rotatable couplings permitting the rotation of each car about a longitudinal axis. The rotary car dumper is |
| 4351431 |
Heavy duty belt conveyor |
September 28, 1982 |
| The load carrying upper reach of a belt conveyor particularly useful for transporting large pieces of rock and other heavy bulk material dispenses with the usual idle troughing rollers and is supported by an endless succession of spaced transverse flexible cross members or hammocks each |
| 4340207 |
Waste heat recovery apparatus |
July 20, 1982 |
| There is disclosed a process and apparatus for the recovery of heat from exhaust or waste gases having a temperature of from about 500.degree. to about 2500.degree. F. generated in a process operation cycling between an operational mode and in idling mode utilizing an intermediate heat |
| 4316543 |
Sieving roller conveyor for green pellets |
February 23, 1982 |
| This invention relates to a sieving roller conveyor for transporting green pellets and for sieving off fines. The conveyor comprises a series of horizontally disposed rollers which are alternately spaced to provide a cleaning clearance and a sieving clearance. The rollers extend tran |
| 4306895 |
Coal stacking tower dust control system |
December 22, 1981 |
| An improved stacking tower is equipped with a dust pollution control system which maintains a negative pressure within the tower and comprises an exhaust means, dust collection and removal means and movable closure means for closing the discharge openings of the tower. A modulating air d |
