17782results about "Screening" patented technology

A system for separating components of a slurry is disclosed, the system including a housing; a basket for holding at least one shaker screen, the basket movably mounted in the housing; at least one vibrator coupled to the basket; a sump disposed below the basket to collect at least a portion of the slurry passing through the at least one shaker screen; a pressure differential device fluidly connected to the sump for developing a pressure differential across the at least one shaker screen; and a toggling device for toggling the pressure differential across the screen. A system including a degassing chamber fluidly connected to a sump and a pressure differential device, wherein the degassing chamber is disposed between the sump and the pressure differential device, and a fluid conduit fluidly connected to the degassing chamber for recovering a degassed fluid is also disclosed.

Proppant material for hydraulic fracturing is provided. The particles of the proppant are formed by drip casting. A slurry of finely divided ceramic particles is flowed through nozzles and formed into droplets under the influence of vibration. Uniform sized, smooth surface, spherical green particles are formed. The green particles are dried and sintered to form the proppant. The proppant is used in the process of hydraulic fracturing of wells.

The invention provides, inter alia, a method for producing granules from a powder, characterized in that a low compaction force is applied to the powder to produce a compacted mass comprising a mixture of fine particles and granules and separating fine particles from the granules by entraining the fine particles in a gas stream. Also provided are apparatus for use in the process and tablets formed by compression of the resultant granules.

A vibratory separator (in one aspect, a shale shaker) and methods for using it, the separator in certain aspects having a base, a basket movably mounted on the base, screen apparatus on the basket, material flowing onto the screen apparatus for treatment, at least a portion of the screen apparatus not inclined downhill (e.g. said portion horizontal or uphill), electromagnetic vibratory apparatus connected to the basket for vibrating the basket and the screen apparatus, driving apparatus for driving the electromagnetic vibratory apparatus, and control apparatus (on-site and/or remote) for controlling the driving apparatus and the electromagnetic vibratory apparatus; the material, in one aspect, being drilling fluid material with solids therein.

The present invention provides a screen system (8) suitable for use in a vibratory screen apparatus (1), and comprising: a screen element (11) and a support frame (12) therefor, as well novel screen elements (11) and mesh panels (19) therefor, and the use thereof. The screen element (11) consists essentially of a mesh panel (19) provided with first and second elongate support members (22, 23) extending along opposite end portions of the mesh panel (19). The support frame (12) has spaced apart first second elongate frame elements (13, 14) for engagement with the screen element support members (22, 23) and further elongate frame elements (17, 18) extending there between for supporting the mesh panel (19). The screen element support members (22, 23) and said first and second frame elements (13, 14) are formed and arranged for secure interengagement in use of the screen system, with at least one of said screen element support members and the respective one of said first and second frame elements being formed and arranged so that when clamped together, the mesh panel (19) is securely held under tension against said further frame elements (17, 18).

A method has been developed for the post-synthesis separation of nanotubes by size and/or type. Solubilized, functionalized nanotubes are passed over a GPC column such that length-separated fractions are collected. These length-separated fractions can then further be separated by diameter or type. Particularly useful are methods for separating nanotubes into metallic and semiconducting fractions.

A screen assembly for a vibratory separator, the screen assembly having a first screen portion having a first end and a second end spaced apart from the first end, and a second screen portion formed integrally of or connected to the second end of the second screen portion. A screen assembly with a first portion of screening material and a second raised portion of screening material, the second raised portion extending from a material introduction end of the screen assembly to a material exit end thereof, the raised portion, in one aspect, culminating in an apex above the first portion of screening material.

The invention discloses a preselecting method of low-grade magnetic iron ore, comprising the steps of crushing the raw ore of the magnetic iron ore by coarse crushing, intermediate crushing and fine crushing operations, conveying to subject to ultra-fine crushing operation, and then crushing by a high-pressure roller mill, scattering the crushed product by a wet cylindrical sieve, conveying the ore on the cylindrical sieve to the vibrating sieve by a belt to perform wet gradation, conveying the ore on the vibrating sieve to a dry magnetic separator by the belt to discard the waste, returning the ore concentrate of the dry magnetic separator to the high-pressure roller mill to crush the ore concentrate again, perform magnetic separation and discarding tailings of the ore concentrate below the vibrating sieve and the ore concentrate below the cylindrical sieve in a wet coarse grain intermediate-field intensity magnetic separator, and selecting the coarse ore concentrate of the intermediate-field intensity magnetic separator by a grinding separation technology. The invention has the advantages that the invention selects quantities of qualified mine tailings by wet magnetic separation before grinding ore, reduces ore grinding work, reduces ore grinding energy consumption and has high system processing capacity; the invention can be widely used in magnetic ore dressing plant, and in particular suitable for treatment of preselecting low-grade magnetic iron ore with the iron grade lower than or equal to 22%.

A method comprising: receiving, in a network element of a packet data core network, a network resource request from a user equipment, said request including indication on the user equipment's Internet Protocol (IP) version capability; creating, in said network element, a set of parameters for guiding the user equipment in IP address allocation at least in one packet data network, said set of parameters including at least a recommended version of IP address type to be used; and signalling said set of parameters to the user equipment as a response to the network resource request.

A screen apparatus, which in certain aspects is a screen apparatus having a support, screening material on the support, and energizable identification apparatus on (exteriorly, interiorly, and/or within) the support for identifying the screen apparatus; a vibratory separator with such a screen apparatus; and a vibratory separator or shaker with energizable identification apparatus.

Methods and systems are disclosed employing a shale shaker for processing a mixture of drilling fluid and solids with multiple screen assemblies and conversion apparatus for switching flow to the screen assemblies between series flow and parallel flow; and in one aspect, a screen or screens for screening lost circulation material.

In a method and a device for driving a crop conveying unit composed substantially of at least one pan with at least one sieve the pen and receive are hung in an oscillation-facilitating manner in a machine housing, at least one oscillation-reducing drive unit is provided, drive unit is formed by a linearly-oscillation unit, and the drive unit is controlled via a change in a parameter selected from the group consisting of frequency, stroke, and both.

Methods and systems for cleaning coins and issuing a redeemable voucher for same. In one embodiment, an apparatus for issuing a redeemable voucher includes a coin input region configured to receive a plurality of coins, and a user interface configured to receive a request for a redeemable voucher. The apparatus can further include a debris separation device having a first opening configured to receive the plurality of coins from the coin input region, and at least a first wall forming an interior surface and an exterior surface. The first wall of the debris separation device includes at least one second opening smaller than the first opening and sized to prevent passage therethrough of the smallest coin of the plurality of coins. A driver can be configured to move the debris separation device and agitate the plurality of coins.

An apparatus for separating solids from a drilling fluid that includes a basket having two opposed spaced-apart side walls having first ends and second ends, the first ends spaced apart by an end wall connected to each of the side walls, the basket further including a bottom wall through which a fluid outlet passage is defined, a plurality of screening surfaces having a front edge and a back edge and positioned within the basket between the side walls with each screening surface spaced apart vertically from adjacent screening surfaces and the back edge spaced apart from the end wall of the basket, wherein the back edge of each screening surface is lower than the front edge of the corresponding screening surface, a plurality of weirs, each weir retained along the back edge of a corresponding screening surface and spaced apart from the end wall to define a fluid passage between each weir and the end wall, wherein each weir has a top edge extending to a weir height above the back edge of the corresponding screening surface and the top edge is lower than the front edge of the corresponding screening surface, at least one flow director catching unseparated drilling fluid in the fluid passage and directing the unseparated drilling fluid onto a lower screen, and wherein fluid in the fluid passage between the lowermost screen and the end wall is directed to a spillover fluid outlet is disclosed.

The invention relates to an air flow screening device for micron-sized powder materials, belonging to the screening technical field of powder engineering. The device is formed by improving the existing boiling dryer as follows: a front exhaust main pipe of the existing dryer is divided into a front exhaust main pipe and a back exhaust main pipe, a sieve plate mesh box with a sieve inside is added between the front exhaust main pipe and the back exhaust main pipe to increase the space dimensions of a fluid bed so as to increase the area of the sieve, so that the effective drift diameter of the sieve is increased, and the pore diameter of the sieve can be changed; a blowback device is added to prevent the sieve from being clogged; a circulating device is added to circulate the powder back to the main cavity of the fluid bed; and a pneumatic transmitting and discharging device is added on the basis of the original exhaust system. The device overcomes the defects that the existing boiling dryer can be only used for millimeter-sized particle materials due to the small sieve area and large meshes of the existing boiling dryer and powder materials are piled on the sieve and clog the sieve to block or even disable the air exhaust so as to affect the normal operation of the air jet screening when a small-pore sieve is used in the existing boiling drier. And the invention is applicable to the screening of powder materials.

The invention relates to a vibrating screen. The vibrating screen comprises a foundation support, a horizontal vibration attenuation mechanism, a vertical supporting mechanism, a horizontal guide rail, a bracket and a motor, wherein the foundation support is provided with a horizontal supporting part and vertical supporting parts, and the vertical supporting parts are arranged on two ends of the horizontal supporting part; the horizontal vibration attenuation mechanism is connected with the vertical supporting parts of the foundation support; the vertical supporting mechanism is connected with the horizontal supporting part of the foundation support; the horizontal guide rail is respectively connected with the vertical supporting parts and the horizontal supporting part of the foundation support through the horizontal vibration attenuation mechanism and the vertical supporting mechanism; the bracket is used for fixing a screen assembly, and the bracket can be movably fixed on the horizontal guide rail through a slide block; the motor is installed on the foundation support, and a rotating shaft of the motor is connected with the slide block through a crank linkage mechanism. According to the vibrating screen of the invention, a spring is uniformly stressed, the service life is prolonged, and the vibration amplitude of the screen assembly can be conveniently adjusted.

A method is disclosed for relaying data between a Base Station (BS) and a Mobile Station (MS) through a relay station in a cellular network. In the data relay method, the relay station receives data from the BS and the MS, performs network coding on first data received from the BS and second data received from the MS using a predefined operator, generates a packet with the network-coded data, and transmits the packet to the BS and the MS through one wireless channel. Identification information indicating the network coding, identification information of the MS, sizes of the first and second data, and sequence numbers of the first and second data are recorded in a header of the packet.

Screens and screen assemblies for a vibratory separator or shale shaker, such screens and screen assemblies made by a method including applying glue in a glue pattern to at least one layer of screening material, said applying done by powered moving mechanical glue application apparatus; in one aspect moving with powered mechanical screen movement apparatus the at least one layer of screening material beneath the powered moving mechanical glue application apparatus; in one aspect, using hot melt moisture-curing glue, and in one aspect facilitating the cure of moisture-curing glue by applying moisture to it.

The embodiment of the invention discloses a building refuse treatment regeneration system, including a classification stacking, sorting processing system, a classification processing system and a plurality of storage bins, wherein, the classification processing system includes at least two parallel crushing screening process production lines and water circulating systems, each crushing screening process production line includes a feeder, crusher, as well as a screening machine connected in series in sequence, and a plurality of outlets of the screening machine are respectively connected to the plurality of storage bins through conveyor belts. By adoption of the building refuse treatment regeneration system of the embodiment of the invention, bricks, tiles, dust and sand and concrete blocks and the like in the building refuse can be divided into at least two production lines for parallel processing, which greatly enhancing the production efficiency and the purity of recycled aggregates, so that the recycled aggregates can be applied to a variety of uses, reproduced into a variety of high-quality recycled products, reducing the waste of resources and minimizing pollution that will be probably caused to the environment.

The invention relates to an ore crushing device, in particular to an industrial continuous ore crushing device, and aims at achieving the technical purpose of providing an industrial continuous ore crushing device which is continuous and reliable in work, convenient to maintain and repair and high in ore crushing efficiency. In order to achieve the technical purpose, the industrial continuous ore crushing device comprises a bottom plate, an L-shaped support, a feeding hopper, a first support rod, a second support rod, a crushing barrel and the like; the L-shaped support is connected to the right side of the top of the bottom plate in a bolt connection mode, the feeding hopper is arranged at the top end of the L-shaped support, the first support rod and the second support rod are arranged on the inner side of the L-shaped support, the first support rod is located over the second support rod, a discharging device is arranged at the left end of the first support rod, and the crushing barrel is arranged under the discharging device. According to the industrial continuous ore crushing device, when ore is crushed, the effects of being continuous and reliable in work, convenient to maintain and repair and high in ore crushing efficiency are achieved.

A method and apparatus for separating nanometer-sized particles of a powder. The method includes (a) feeding the powder particles into a pressurized gas stream which carries the particles into a first stage filter device of a multiple-stage separator system; (b) operating the first stage filter device to remove and collect coarse particles and a filter device in at least another stage to remove and collect finer particles of the powder; the filter device having a dynamic filter which is composed of (b1) a mesh of a multiplicity of openings with the opening size at least two times larger than the average size of the particles, (b2) vibration devices or shakers to shake off the particles that may otherwise clog up the mesh openings, (b3) size sensors to measure the sizes of the particles collected by the filter devices, and (b4) a controller to regulate the operations of the shakers and sensors in order to form desired dynamic mesh holes for the purpose of filtering out the coarse particles in the first stage or the finer particles in another stage; and (c) operating a dust collector to exhaust the residual gas, allowing the finest particles of the powder to be separated and collected.

The invention discloses a crushing, grading and separating device for kaolin raw ore, which comprises a casing, the upper end of the casing is provided with an upper cover, the middle part of the upper cover is provided with a feeding hopper, and the casing is provided with a left rotating shaft, a right rotating shaft, and a left crushing wheel. , right crushing wheel, concentrated guide plate, fixed grinding protrusion, grinding disc, rotating protrusion, vertical shaft, primary screen filter, first vibration motor, fine screen filter, second vibration motor, tailing deflector, The third vibrating motor is provided with a driving gear and a driven gear on the periphery of the left and right shafts, a first motor is provided at the end of the left shaft, and the right wall of the housing is provided with a primary sieve discharge pipe, a primary sieve collection box, a first return pipe and The tailings discharge pipe, the left wall of the shell is provided with a fine sieve discharge pipe, a fine sieve collection box and a second return pipe, and the lower end of the shell is riveted with a second motor, a support rod, a support sleeve, a damping spring and a shock absorber filling. The invention can efficiently grind and pulverize the kaolin and sieve and classify it.

A cart is towed behind a combine harvester for collecting corn cobs and includes a conveyer belt feeding into a system for separating cobs from residue to be discharged and a tank for receiving and transporting the cobs. An unload auger is provided from the tank to one side of the cart while the cart moves forward. Power for driving the cart is obtained from a chopper drive of the combine harvester. The separating arrangement includes a suction fan or a single blower fan or a series of blower fans for blowing air through material from a conveyor and into a spreading guide which disperses the residue. The cobs are conveyed using a series of augers where the auger to flight distance is at least 2 inches and particularly a pair of augers feed the cobs through a front wall of the tank so as to push cobs upwardly into the tank.

The invention discloses a beneficiation process of a molybdenum-tungsten oxide ore. The process of which is that: the liberation degree of ore crushing is higher than or equal to 70%; the flotation of molybdenum sulfide is preferred; the floatation tailing is classified and then a separation of slime and sand is carried out, wherein a slime and sand system takes alkali as the conditioning agent, sodium silicate as the depressant, and emulsified fatty acid as the collecting agent. The rough concentrate obtained from the separation of slime and sand is concentrated after being blended to obtain molybdenum-tungsten oxide ore collective concentrate. The collective concentrate is grounded again and added with the depressant, then a secondary concentrate can be gained through the concentration; the secondary concentrate is concentrated by means of Peter Roph method to obtain scheelite ore and oxidized molybdenum-tungsten beneficiation concentrate. The invention has the advantages that: 1. the invention discloses a beneficiation process flow for treating molybdenum-tungsten oxide ore; 2. the invention solves the difficulty of lowe technical specification of molybdenum - tungsten oxide ore beneficiation; 3. the invention completes laboratory tests and researches and fulfills industrialized implementation for the first time in China.

A vibratory separator for sorting solids including a housing (12) with an inlet (22) for feeding material, a first oulet (24) for discharging undersized particles, and a second oulet (26) for discharging oversized particles; and one or more screens (28) supported in the housing between the inlet and the first outlet wherein undersized particles pass through the screen and exit through the first oulet and oversized particles do not pass through the screen and exit through the second outlet; including the steps of introducing the solids into the housing via the inlet, imparting to the housing a single frequency vibration (20); and converting the single frequency vibration into a sequence of mechanical pulses applied to an interface apparatus by a multifrequency vibratory systems (48), thereby to generate a multifrequency vibration to one or more screens to cause de-agglomeration of the masses to prevent blockage of the one or more screens by particles.

The invention relates to a complete system of recycling treatment of city household garbage and a method thereof. The invention is characterized in that an electronic screen control system controls mechanical transmission and treatment condition of a garbage mechanical classification system, a fertilizer-making system, a plastic classification system, a pulping system and a sewage treatment system by a contact screen and a circuit, the recycling treatment of day treatment for day garbage, closed operation, automatic sorting, no secondary pollution and fully treatment of resources is realized finally, the city household garbage is divided into 48 types, which are combined into 15 types and seven sorts, the classification rate reaches 100 percent, the recycling rate reaches over 99 percent and the whole-range treatment needs 60 to 80 minutes.

The invention discloses a process for treating mixed-type iron ore. The process comprises the following steps: raw ore is crushed and then subjected to primary grinding and primary grading which form closed circuit grinding; after primary overflow is subjected to crudeness/fineness grading and coarse grains are sorted through a gravity separation device, spiral chute concentrate is fed into a fine screen with large mesh size, and undersize products are coarse-grain concentrate; after gravity separation tailings are subjected to tailings discarding through intermediate-magnetism sweeping, intermediate-magnetism sweeping concentrate, gravity separation middlings and oversize products are merged into coarse-grain middlings; the middlings are fed into an open-circuit grinding system consisting of secondary grading and secondary grinding and reground, and then return to crudeness/fineness grading; fine grains after crudeness/fineness grading are sorted through a magnetic separation device; magnetic separation concentrate is fed into the fine screen with small mesh size, and the undersize products are fine-grain concentrate, while the oversize products are fine-grain middlings which are directly fed into two-stage grinding so as to be reground; fine-grain concentrate and the coarse-grain concentrate are merged into final concentrate; and intermediate-magnetism sweeping tailings and the magnetic separation tailings are merged into final tailings. The process has the advantages of good flow stability, easy operation and capability of effectively recovering the mixed-type ore and fully utilizing mixed-type ore resources.

A screen is disclosed which, in certain aspects, has screening material between opposed frame sides and one or more lower strips beneath the screen. In one aspect these strips are only inteconnected via their ends and not along their lengths. In certain aspects, a plurality of lower strips are bonded to the screen and extend across the screen from one frame side to the other. In one aspect one or more of the strips has one, two, or more humps or ridges corresponding to one or more corrugations in a corrugated perforated plate and/or corrugated screen assembly which is on the plate or, with no plate present, on the strips. In another aspect instead of the strips a solid corrugated perforated plate is used. In one aspect openings or perforations through the plate are triangular. In one aspect the screen is undulating screening material and lower portions of the screening material are bonded to a plate or to strips. Optionally screen mounting hooks or frame edges or screen edges may be used with such screens. A screening apparatus or shale shaker is disclosed which uses such plates and screens.

A method for sorting and comprehensively utilizing municipal solid waste includes steps of: 1) feeding the municipal solid waste into a feeding tank through a feeding inlet, then outputting into a breaking device; 2) breaking refuse bags and large blocks by the breaking device; 3) transporting broken refuse into a two-stage roller screen for screening out dusts with a particle size of less than 3 mm, and hanging strips; and 4) transporting mixed refuse screened by the two-stage screen into a vibrating screen; screening oversize products by a heavy winnowing machine for separating inorganic blocks, large plastics and paper; transporting underflow products into a two-room multi-functional winnowing machine for dividing into heavy materials, light materials and medium materials. By effectively combining sorting devices, effective sorting and reutilization of mixed refuse are achieved. Thereafter, paper, fibers, plastics and kitchen organic refuse are respectively for producing refuse derived fuel, wood-plastic composite and fertilizer.

The domestic garbage separator includes a feeder, a magnetically separating conveyer with discharge port and discharge duct, a garbage winnowing device with powder discharge port and glass and pebble discharge port, a garbage beater, a cylindrical sieve, an oversize winnowing device with several discharge ports, an undersize winnowing device with several discharge ports, and a frame. The present invention has clear domestic garbage classification, high recovering rate, environment friendship and other advantages, and can reduce amount of domestic garbage, make best utilization of domestic garbage resource and treat domestic garbage harmlessly.