Abstract: Raw meal sludge is dried in a vapor flow dryer by circulating exhaust vapor through a steam circuit which, prior to introduction thereof into the lower part of the dryer, is heated by indirect heat transmission from gaseous flows from a pre-heating system from a gas cyclone of a clinker production line. A partial vapor flow corresponding to water evaporated during raw meal sludge drying is removed from the steam circuit and extracted in the form of a condensate after increasing the vapor temperature by a vapor compressor and the passage of vapor arranged in the dryer over a heating surface of a vapor condenser. The sludge is sprayed into the lower part of the dryer where water is evaporated by the heat of the circulating exhaust vapor and heat from the condenser heating surface. Dried raw meal is separated from the exhaust vapor in a cyclone separator.

Abstract: A system for pre-processing material into groups of different sizes comprising three levels. The second level is positioned above the third level and below the first level. The first level comprising a feeding mechanism, one or more first screens coupled to ducts and having apertures, blowers and vacuum ducts, dust collectors and a diverter. The screens transport the material along the first level in a first direction while a portion is sifted away before being diverted to the second level. The second level comprising one or more second screens coupled to ducts and having apertures, blowers and vacuum ducts and a takeaway device. The screens transport the material along the second level in a second direction different than the first while a portion is sifted away before falling to the third level. The third level comprising blowers and vacuum ducts and takeaway devices for receiving a portion of the material.

Abstract: A method and apparatus for separating fine particulate matter from debris and bulk material is presented which includes a frame, a screen connected to the frame that is adjustable in height relative to the frame at one of its ends, a removable trough positioned near the back end of the frame, and a motor for vibrating the frame to assist in separation of materials.

Abstract: In a mineral preparation plant which receives a raw mineral feed and separates the raw mineral feed into a clean mineral and a refuse, an apparatus is provided for use therein. The inventive apparatus retains dilute media which is formed as a by-product of the separation process. The inventive apparatus includes a sump formed in a floor of the mineral preparation plant and configured to receive and retain: (a) dilute media, consisting of finely sized particles of mineral, refuse, media and water, from an underpan of at least one refuse screen and a clean mineral screen, and (b) mineral, refuse and media particles spilled by mineral processing equipment in the mineral preparation plant.

Abstract: The invention in the simplest form is a passive method and apparatus for filtering motile sperm from a sperm sample. The invention passively filters the motile sperm using a membrane assembly disposed in a container. In operation, a sperm sample is placed on one side of the membrane assembly, and the motile sperm migrate through the membrane where they can be easily extracted.

Abstract: The invention in the simplest form is a passive method and apparatus for filtering motile sperm from a sperm sample. The invention passively filters the motile sperm using a nucleopore membrane that is contained within a membrane assembly, wherein the membrane assembly is disposed in a container. In operation, a medium is placed in the container so the membrane contacts the medium. A sperm sample is placed one side of the membrane assembly, and the motile sperm migrate through the membrane leaving the non-motile sperm behind, where they can be easily extracted.

Abstract: Apparatus for classifying high purity polysilicon particles includes a receptacle for holding the particles and a rotary member for feeding the particles from the receptacle. The rotary member defines at least a portion of a front wall of the receptacle and is supported for rotation about its generally horizontally oriented longitudinal axis. A motor drives rotation of the rotary member such that a longitudinal groove passes through the receptacle to pick up particles smaller than a predetermined size and dump the captured particles onto an inclined surface disposed generally forward of the receptacle. The particles slide downwardly acquiring a velocity according to their shape. A gap between a lower edge of the inclined surface and a first receiver is sized such that only particles having more than a predetermined velocity are capable of traversing the gap to the first receiver. The remaining particles fall through the gap and into a second receiver.

Abstract: A backhoe operated bucket is provided with an opening containing a screen frame opposite its scraper blade equipped loading opening for separating coarse material contained by soil excavated from a pipeline ditch and depositing fine padding soil on a pipeline in the ditch. A motor driven eccentric supported by the screen frame vibrates the screen frame in several directions to achieve a separation of fine and coarse material, the latter being deposited in the ditch above the padding soil.

Abstract: A system and method for recycling used oil filters by shredding the filters to facilitate separation of the metal and nonmetal filter components and to release free oil trapped inside the filters, separating the metal and nonmetal filter components using combined magnetic and gravitational means, compressing the nonmetal filter components, and recovering the oil therefrom.

Abstract: A sluice box classifier for a sluice box of a gold mining dredge includes a trough and a rim secured to an underside of the trough. The rim anchors the trough to a standard size container. The trough is formed of four walls and a bottom, and is at least as wide as a lower end portion of the sluice box from which collected overburden is received. The bottom includes a center panel and two floor panels which slope upwardly from opposite sides of the center panel to meet opposite sidewalls of the trough. The floor panels funnel overburden deposited into the trough from the sluice box to the center panel where a plurality of openings in the center panel allows the smaller pieces of overburden to pass through into the container. A portion of a front wall of the trough is bent outwardly of the trough to cooperate with an angle member so as to form a slot which connects the trough to the sluice box.

Abstract: Lead battery components such as metallic grids and paste are fed into a tumbling drum which has inlet and outlet ends and an intermediate region in which there are screens for the fine particles of paste to discharge to the exterior of the drum. Water is sprayed onto the plates in the drum. A shroud or housing surrounds the region of the drum containing the screens. Means are provided to create subatmospheric air pressure in the shroud and, consequently, in the drum. The slurry of paste particles is collected in a tank which is integral with the bottom of the shroud. The slurry is passed through a cyclone separator and the water extracted by the separator is recirculated through the lines which supply the spray nozzles. All openings in the drum are subjected to subatmospheric pressure.

Abstract: In combination a screen, a shaker, a conveyor and carbody device which is attachable to a vehicle of choice, such as an hydraulic excavator, a backhoe, etc., and when installed thereon allows the vehicle to perform as a padding machine.