子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 141 | Washing liquid distribution system | US09880949 | 2001-06-15 | US06527125B2 | 2003-03-04 | Timo U. Niitti |
| A system for delivering the same or differing controllable amounts of washing liquid to several flights of a spiral separator including a housing, a plurality of spaced members having a respective generally vertical passage communicating with fluid in the housing and permitting fluid to flow therethrough. A plurality of fluid passageways respectively communicate with the members to provide the same or differing amounts of liquid to each of the flights. The distributor housing may include a central liquid receiving chamber, a plurality of spaced compartments located in proximity with the chamber, a plurality of passages throughwhich fluid flows into fluid passageways respectively coupled to the compartments, a single flow controller rotatable therein to expose different portions of said passages at every rotation thereby varying the liquid flow to each compartment. The housing may be tilted to vary the amount of liquid flowing into each of the compartments, thereby delivering the same or differing amounts of liquid to each of the flights enabling adjustment of the liquid flow for each flight. Another distributor housing contains a plurality of fluid passageways fluidly communicating with the plurality of flights of spiral separator, each of the fluid passageways having respectively a vertical passage for receiving liquid from the housing into the fluid passageways, and a tilting mechanism for tilting the housing to vary liquid flow through the passages. | ||||||
| 142 | Method for optimizing flotation recovery | US09359262 | 1999-07-22 | US06390303B1 | 2002-05-21 | David William Clark; Billy Kim Fung Chan; Rustam H. Sethna; Peter L. Fleming; Jason Simon Tullai |
| A method for optimising a mineral recovery process. A slurry 10 is fed to a conditioning step 20. The condition slurry 30 is then provided to a flotation circuit 40 to recover a concentrate 50. The remainder of the slurry is then rejected as tail 60 or passed for further processing. The present invention provides apparatus for analysing a sample stream 100 of the slurry. A sample stream 100 is provided to an analysis device 200 which treats the sample with an oxidising gas similar to the oxidative treatment 20. Several parameters are measured before and/or after the oxidative treatment of the slurry. The flotability characteristic of the slurry is then determined as a function of the measured parameter(s). The result is used to optimise mineral recovery. This apparatus can be used intermittently or continuously to provide on-going optimisation of the mineral recovery circuit. | ||||||
| 143 | Apparatus for sorting and recombining minerals background of the invention | US352729 | 1999-07-13 | US6085912A | 2000-07-11 | Earl L. Hacking, Jr.; Thomas A. Swaninger |
| An apparatus for separating a mixture of mineral particles and recombining the mineral particles in an alterable, controlled fashion to create a plurality of products each having a predetermined, desired particle size distribution. | ||||||
| 144 | Pressurized deinking module with vent line | US62266 | 1998-04-17 | US6073774A | 2000-06-13 | Richard P. Hebert; Michael McKenzie |
| A mixture of air, paper stock made from recycled paper, foaming agents and surfactants are injected into a pressurized container. The container has a stock inlet at an end opposite a stock outlet, and three outlets arranged along the top of the container between the stock inlet and the stock outlet. The first top outlet nearest the stock inlet is separated from the second and third outlets by a baffle, and the second and third outlets are separated from the stock outlet by a baffle. Each outlet has a valve which controls flow from that outlet. By adjusting the outlet valves, foam and waste ink is vented from the first and second outlets from the stock inlet, while stock is vented from the third outlet which is closest to the stock outlet. The stock passing through the third outlet is recycled through the container. | ||||||
| 145 | Discrete material washing apparatus | US646316 | 1996-05-13 | US5836456A | 1998-11-17 | Thomas James Lappin; Robert Leslie Pickering |
| A discrete material washing apparatus comprises a structure mounting an elongate trough having an inlet and an outlet. A dished tray is mounted on the structure and shaped to feed into the inlet. The tray is to receive disposal of a cementitious mixture therein. A cylindrical screen has a net surface. The screen extends substantially along the length of the trough and is adapted for rotation. Water spray is provided to play on any mixture disposed onto the tray and passed through the inlet into the interior of the screen for size classification with smaller particles able to pass through the mesh of the screen surface into the trough and larger particles remaining in the screen. A first mechanism is provided to remove the smaller particles from the trough, and a second mechanism is provided to remove the larger particles from the interior of the screen through the outlet of the trough. A weir is provided in at least one longitudinal side of the trough for removal of the cementitious water therefrom. A power mechanism is provided to rotate the screen and operate the first and second removal mechanisms. A gate mechanism is provided for operation to close off the inlet of the trough, the gate mechanism is operable responsive to a pressure monitoring device surveying throughput of mixture into the screen. | ||||||
| 146 | Batch timer initialization for a sand classifying tank | US880702 | 1992-05-08 | US5818732A | 1998-10-06 | Louis A. Vanderwilt |
| A process to determine the optimal initial settings for a series of timers in a timed-contribution batch process, based on the feed material flow rate and the composition of the material. The optimum initial timer arrangement is that which results in the maximum possible product output in the shortest possible batch time; this condition is realized when all of the minimum product requirements, as determined by the minimum timer settings, are satisfied at approximately the same time. The process first monitors the accumulation rates of the various constituents of the feed material for a discrete period of time, during which time a sensing device records the individual accumulation rates. Values representing the accumulation rates are normalized to the value of the greatest accumulation rate. A multiplier is applied to the resulting ratios to determine the optimal initial minimum timer settings. The maximum timer settings may be arithmetically or algebraically derived from the minimum timer settings. This method allows the operator to make manual adjustments, which sacrifice a percentage of the product yield for the sake of product composition control, from the starting point of maximum production. | ||||||
| 147 | Multiflow pressurized deinking apparatus | US993474 | 1997-12-18 | US5804061A | 1998-09-08 | Richard P. Hebert; David B. Grimes |
| A mixture of air and paper stock made from recycled paper from which the ink particles have been chemically released is injected into a cylindrical processing vessel. Added surfactants create a foam from the air as it rises through the stock and cause the ink particles to adhere to the air bubbles, resulting in a foam containing a concentrated fraction of the ink particles with some included fibers. The foam rises to the top of the vessel, and carries with it ink particles. Additional air injection ports can be used to increase the amount of foam generated and the amount of ink removed. Flow of stock and foam from the vessel can be controlled by adjusting valves on the stock and foam outlets. Flotation sensors allow the foam head to be maintained at the stock level by controlling the rate foam is withdrawn through the foam outlets. | ||||||
| 148 | Method and system for reclaiming aggregate from concrete waste material | US586463 | 1996-01-11 | US5699969A | 1997-12-23 | Kazutoshi Isaji |
| A method and system for reclaiming aggregate from concrete waste material includes crushing step and means of compression-crushing lumps of concrete waste material into a crushed mixture, and sorting the crushed mixture by size thereof, grinding step and means of rotating the crushed mixture sorted to grind it with a grinding member which rotates in an opposite direction to the rotating direction of the crushed mixture sorted, thereby peeling mortar from gravel, crushed stones and sand of the crushed mixture to obtain a mixture of gravel, crushed stones, sand, cement and mortar, and product separating step and means of separating the mixture of gravel, crushed stones, sand, cement and mortar into gravel and crushed stones, sand, cement and mortar. | ||||||
| 149 | Pressurized, sparged flotation column | US329958 | 1994-10-27 | US5580463A | 1996-12-03 | Gale L. Hubred |
| A method for removing residual oil from oily water under pressure is provided. The method comprises flowing a liquid stream of an oily water downward through a vertically extended zone to remove the residual oil. A gas is injected into the lower end of the zone and at a rate sufficient to generate bubbles of a predetermined volume in the liquid stream. A sufficient pressure is maintained in the zone to control the rate of expansion of the bubbles to a volume compatible with oil droplets in the liquid stream during upward migration of the bubbles and the oil droplets. The rate of flow of the liquid stream from the lower end of the zone and the rate of flow of the gas from the upper end of the zone are regulated to collect residual oil from a quiescent volume within the upper portion of the zone. | ||||||
| 150 | High throughput flotation column process | US19153 | 1993-02-17 | US5307937A | 1994-05-03 | Joel F. Hutwelker |
| A high efficiency method for the recovery of relatively coarse constituent utilizing a flotation column is provided. The method broadly includes the steps of (1) establishing and maintaining a net upward flow of water (negative bias) through the upper portion of the flotation column which is maintained below a predetermined critical limit; (2) establishing and maintaining an upwardly moving stream of diffuse air which is introduced at the lower portion of the flotation column and which has a superficial air velocity between about 0.5 and 2.0 cm/sec.; (3) introducing a feed stream comprising a slurry of the ore into the upper portion of the flotation column wherein the mineral particles therein substantially range between about 20 mesh (840 microns) and about 325 mesh (44 microns) in size; (4) establishing and maintaining the percent solids in the flotation column between about 35 and 50%; (5) establishing and maintaining column throughput of the slurry between 1.8 and 4.0 tons/hour/sq. ft.; and (6) recovering the desired mineral particles from the upper portion of the flotation column. | ||||||
| 151 | Control apparatus for coal/mineral jigs | US848127 | 1992-03-09 | US5207742A | 1993-05-04 | G. Edward Scutt; John J. Glista |
| A nuclear jig control unit which is an electronically controlled system employing nuclear sensing devices and electro-hydraulic operators to proportionally control the opening and closing of a refuse gate of a jig. These components permit remote operator control and monitoring of the jig. The system provides for immediate adjustment of the specific gravity setting which triggers refuse discharge. This allows complete removal of the built-up refuse yet minimizes inadvertent coal losses with the refuse. | ||||||
| 152 | Gravity particle separator | US582932 | 1990-10-11 | US5148922A | 1992-09-22 | Paul A. Marriott |
| A gravity separator for the separation of heavier particles from lighter waste material comprises a stack of decks (4) mounted for resonant oscillatory motion within a supporting frame (1). A motor (9) oscillates the decks at their resonant frequency while a distribution system (6) supplies a feed in the form of a slurry to the surface of the decks. As shaking continues, the heavier particles within the slurry are gradually separated from the lighter particles. Optimal separation is provided by a control system which, if necessary, automatically changes the amplitude of oscillation and/or the timing of the stages as separation proceeds, for example in response to outputs of detectors which measure the frequency of oscillation and the power being consumed. | ||||||
| 153 | Water clarifying apparatus | US241384 | 1988-09-07 | US4931175A | 1990-06-05 | Milos Krofta |
| Water clarifying apparatus has a cylindrical tank where particulate contaminants suspended in raw water are separated using flotation techniques. A set of concentric mutually spaced, conical plates are positioned in the flotation tank. The plates rotate about the tank, preferably in unison with a (i) header that distributes equal quantities of raw water to each annular zone in the tank defined by the conical plates and (ii) a scoop for removing the contaminants which form a floated sludge layer. A screw conveyor is located in a discharge pipe of the floated sludge scoop. A infrared sludge detection array in a window in the side wall of the tank senses the sludge-water interface. Air dissolving tubes operating in parallel have common feeds and discharges coupled through three way valves operated to pressurize a closed volume of water with high pressure air in one tube while reloading and discharging the other tube. | ||||||
| 154 | Process for fine coal cleaning | US140060 | 1987-12-31 | US4810371A | 1989-03-07 | Anthony G. Fonseca |
| A process for automating fine coal cleaning including monitoring the operation of a flotation cell for separating coal from ash impurities by automatically detecting the coal content of the tailings from the cell and controlling the supply of additives to the cell to optimize slurry coal recovery and automatically monitoring the fluid level of the coal slurry in a dewatering filter tub to control the supply of additives to the filter tub and functioning of a dewatering filter. | ||||||
| 155 | Overflow outlet for a cyclone separator and method of operation | US705431 | 1985-01-28 | US4622150A | 1986-11-11 | Noel Carroll |
| A cyclone separator (10) having an elongated tapered separating chamber (25) with tangential inlet pipes (26, 28) thereto, and overflow outlet pipe (34) at the larger diameter end of the separating chamber, for outflow of a less dense component of a liquid mixture to be separated, and an underflow outlet (23) at the smaller diameter end of the separating chamber, for outflow of the denser component of the liquid mixture to be separated. The overflow outlet pipe (34) has an orifice (77) which is variably obstructable by a valve member (80) movable lengthwise of the pipe (34), to vary the flow rate through the outlet pipe (34). The degree of contamination of the denser liquid component emerging from the underflow outlet (23) is monitored by a detector (118) which is connected to a control circuit (108) which controls a motor (110). Motor (110) is coupled to valve member 80 whereby to move the valve member towards and away from the orifice (77), whereby to decrease the flow through outlet pipe (34) when the contamination level drops and to increase flow when the contamination level rises. A further control circuit (140) coupled to detector (118) is effective to control valves (102, 104) whereby to recycle the denser liquid component through the separator in the event that the contamination level is determined to be above a predetermined level. | ||||||
| 156 | Separation system including a floatation tank having level control means | US642193 | 1984-08-20 | US4563274A | 1986-01-07 | Stephen Rothon; Ronald Collis |
| An aqueous solution carrying paint solids is fed through an inlet into a floatation tank. The clean liquid exits through an orifice whose size is controlled by a movable gate. The level of the liquid within the tank is sensed by an ultrasonic rangefinder and the distance signals output from this rangefinder are fed to an electronic controller. During normal operation, this controller periodically supplies power signals to an electric actuator to adjust the position of the gate whereby the level of the liquid in the tank can be maintained substantially at the a first predetermined level. The controller may also include means for causing the liquid to rise to a second predetermined level after a preset time such that the paint solids are transferred over a weir into a collecting vessel. Thereafter the liquid level is caused to rapidly drop and is again maintained at the first level. | ||||||
| 157 | Control of froth flotation separation | US676897 | 1984-11-30 | US4559134A | 1985-12-17 | George E. Wasson |
| In a froth flotation beneficiation, the rate of addition of collector reagent is varied in response to the change in particle size effected by the beneficiation, as determined by comparing a size analysis of solid particles in one of the separated streams with a size analysis of solid particles in the feed stream. | ||||||
| 158 | Control of froth cell performance through the use of differential bubbler tubes | US575964 | 1984-02-01 | US4552651A | 1985-11-12 | Thomas D. Sandbrook; Roy O. Scandrol |
| A method of controlling the separation of coal from a mixture of coal and refuse in a froth flotation device by measuring the differential back pressure between two gas bubbler tubes immersed to different depths into the body of pulp in the device to produce a first control signal representative of the pulp density, and adjusting the rate of addition of a froth enhancement additive to the froth flotation device responsive to changes in said first signal; a second signal, produced by measuring back pressure of a single bubbler tube and representative of the pulp level in said device, can be corrected for changes in density by combining it with said first signal and then utilized to control liquid level in the cell by adjusting the rate of withdrawal of refuse therefrom. | ||||||
| 159 | Assembly comprising a vortex fluidic device for separating a mixture of a liquid phase and a relatively heavy, solid phase | US612374 | 1984-05-21 | US4536285A | 1985-08-20 | Per G. Karlsson |
| An assembly comprises a centrifugal separator (1) with a rotor provided with permanent openings, a circulation pump (2) and lines (6, 7) forming a circulation circuit. From this circuit there is a discharge line (8) for separated solid phase fraction from an incoming mixture of liquid and solid substance. In order to control the content of solid substance in the circulation circuit, there is provided a vortex fluidic device (13) in said discharge line (8). | ||||||
| 160 | Apparatus for separating materials of small size | US262787 | 1981-05-11 | US4483768A | 1984-11-20 | Domenico Gazzoni |
| This invention relates to an apparatus for separating materials of small size. The apparatus according to the invention comprises a separation tub which can be filled with a liquid up to a preselected level, means for introducing a conveying liquid with the materials to be separated into the tub below said preselected level under a pressure which is higher than that existing the area of introduction due to the effect of the weight of the liquid in the tub, and first and second material-ejection means arranged at said preselected level and, respectively, at the tub bottom to eject lighter and, respectively, heavier material. | ||||||
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