241 |
Recovering Valuable Mined Materials from Aqueous Wastes |
US13479999 |
2012-05-24 |
US20130134074A1 |
2013-05-30 |
David S. Soane; Nathan Ashcraft; Phyo Kyaw |
Disclosed herein are systems and methods for recovering a target material from an aqueous stream. The target material can be a natively hydrophobic target material, such as a hydrocarbon material, such as coal. The target material can also have a surface modification that renders it hydrophobic. Systems for recovering the target material can comprise an extractant formulation comprising a light hydrocarbon solvent and a high molecular weight hydrophobic polymer, wherein the extractant formulation is mixable with the aqueous stream in a mixer to form an admixed solution having a hydrophobic portion and an aqueous portion, with the target material partitioning to the hydrophobic portion; a separator for isolating the hydrophobic portion from the aqueous portion; and a collector to which the hydrophobic portion is directed, wherein the target material is recovered from the hydrophobic portion. |
242 |
Method for simply separatng carbon nanotube |
US12747298 |
2008-12-10 |
US08404207B2 |
2013-03-26 |
Tanaka Takeshi; Kataura Hiromichi |
Disclosed are a method and an apparatus for separating metallic CNT and semiconducting CNT, comprising treating with a physical separation means of centrifugation, freezing-thawing-squeezing, diffusion, permeation or the like using a gel containing CNT as a dispersed and isolated state (CNT-containing gel), to thereby make semiconducting CNT exist in gel and make metallic CNT exist in solution. |
243 |
Continuous gravity assisted ultrasonic coal cleaner |
US12724720 |
2010-03-16 |
US08397919B2 |
2013-03-19 |
Bruce H. Kittrick; Douglas C. McHaney |
An improved system and method for separating combustible organic particles from noncombustible inorganic particles in coal, in preparation for combustion. The coal is size-reduced and size-graded to small pieces which are then supplied to input ends of water-immersed descending slides having ultrasonic transducers for vibratory separation of inorganic and organic particles. The slides have different longitudinal lengths with angles of declination configured to achieve time-differential exposure to the ultrasonic vibratory energy, with smaller coal pieces being subjected to shorter time ultrasonic vibratory exposure. In one preferred form, longitudinally spaced turbidity sensors along the slide provide signals used to control selected ultrasonic transducers upon substantially complete cleaning of the coal pieces. |
244 |
METHOD FOR SIMPLY SEPARATNG CARBON NANOTUBE |
US12747298 |
2008-12-10 |
US20100278714A1 |
2010-11-04 |
Takeshi Tanaka; Hiromichi Kataura |
Disclosed are a method and an apparatus for separating metallic CNT and semiconducting CNT, comprising treating with a physical separation means of centrifugation, freezing-thawing-squeezing, diffusion, permeation or the like using a gel containing CNT as a dispersed and isolated state (CNT-containing gel), to thereby make semiconducting CNT exist in gel and make metallic CNT exist in solution. |
245 |
Method and apparatus for breaking down used materials into reusable components, particularly for recycling wood products, used furniture, automobile composite materials and similar products |
US10128499 |
2002-04-24 |
US20020170989A1 |
2002-11-21 |
Rolf
Hesch |
A method for breaking down used materials or items, particularly wooden or motor-vehicle items, into reusable components with the use of fractionating tools, with which the accelerated parts of used material interact. The breakdown is effected selectively through impacts, deformation tension, bending stress, friction and/or shearing, with the shape and arrangement of the fractionating tools being set and/or matched to the structure and size of the used feed materials and/or the obtained recycled material. |
246 |
PROCESS AND DEVICE FOR THE SEPARATION OF VISCOPLASTIC MATERIALS SUCH AS PLASTICS FROM MATERIALS SUCH AS PAPER WHICH CAN BE DEFIBRATED BY MECHANICAL ACTION |
US09147185 |
1999-02-19 |
US20020079250A1 |
2002-06-27 |
GERHARD
FAHRBACH; HEINZ REINER
SCHNETTLER |
The invention relates to a process for separating tenaciously elastic materials such as plastics and rubber from materials tearing and/or defiberizing under high mechanical stress, particularly paper, and to a device for performing said process. The process is characterized in that the mixture of materials to be separated is subjected to high radial, axial and tangential acceleration forces, whereby a mass flow of shredded fibrous material and a mass flow of substantially unshredded plastics is withdrawn separately. The device for performing the process consists of a screen basket which is cylindrical or preferably polygonal in shape and has borings in its jacket to let the defiberized material pass through, a rotatable driving shaft being arranged coaxially inside the screen basket, with blades being attached to said driving shaft, preferably in rigid connection. |
247 |
Method and apparatus for wetting fibrous material |
US09600633 |
2000-07-20 |
US06336992B1 |
2002-01-08 |
Markus Blomquist |
A method and an apparatus for wetting fibrous material, such as coarsely shredded waste paper. Fibrous material and wetting fluid is introduced into a wetting enclosure. Pressure is decreased within the wetting enclosure for a short period of time for sucking out air from the fibrous material. Pressure is allowed to increase rapidly, whereby wetting fluid is sucked into cavities within the fibrous material and the material is efficiently wetted. |
248 |
Apparatus and method for enhancing partitioning of different polymeric materials from a mixture by density differential alteration |
US09320190 |
1999-05-26 |
US06335376B1 |
2002-01-01 |
Laurence E. Allen, III; Darren F. Arola |
A differential density alteration (DDA) device to enable the separation and partitioning of particles of one or more selected members of plastics included in a mixture of a plurality of different plastics in which each member of the plurality of different plastics is divided into discrete particles. The DDA device heats the mixture to a temperature for a time that causes the particles of the one or more selected members to alter in such a way that the difference between the apparent density of the particles of the selected one or more members and the apparent density of particles of the other members of the mixture (the differential density), after heating, is different from the differential density before heating, whereby the alteration in differential density produces a differential density alteration (DDA). A plastics density separator, having a suitable partition curve, will separate and partition the selected particles of the selected one or more altered plastics members from the altered mixture with improved efficiency and precision. The DDA invention enhances and enables superior separation and partition of different types of plastics and/or different grades of the same plastics from such mixtures. |
249 |
Method and an apparatus for recycling different components in a multiple layer material |
US09202819 |
1999-08-30 |
US06206199B1 |
2001-03-27 |
Rudolf Kurtz; Günter Betz |
In order to recover the various components of multiple layer materials, a method uses a refiner or disperser including mutually opposing rotating discs having material engaging surfaces or elements such as teeth. The method includes: adjusting a gap between the discs so that a material is subjected to a shear force that mutually separates its material layers in the form of pieces or fragments in the absence of any substantial disintegration of the layers; pumping the separated pieces of the various layers together with a supplied suspension liquid to a separator; and, separating readily pulped or slushed pieces of the material suspended in the suspension liquid from pieces of the suspended material that are not readily pulped or slushed. The pumping of the separated pieces and suspension liquid to the separator can be via a collection vessel. |
250 |
Ultrasonic conditioning and wet scrubbing of fly ash |
US135683 |
1998-08-18 |
US5988396A |
1999-11-23 |
Rafic Y. Minkara; Jerry L. Heavilon |
Processes for treating fly ash to enhance the fly ash as a pozzolan for portland cement mixes and to separate therefrom a substantial carbon compound and/or to increase the fineness of the fly ash include the treatment of a fly ash slurry with ultrasonic energy using ultrasonic horns immersed in a slurry of fly ash and water and imparting to said slurry such ultrasonic energy as to cause microscopic cavities to form and implode with high localized energy to break up fly ash agglomerations along cleavage lines and to break up carbon particles and matrices which have entrapped fly ash microspheres therein to release the microspheres into the slurry. A conditioner agent may be added at or during ultrasonic treatment to enhance the flotation of the carbon compound. |
251 |
Hydraulic reactor and classifier for solid particles with ultrasonic
application |
US953382 |
1997-10-17 |
US5947299A |
1999-09-07 |
Belisario Sanchez Vazquez; Jesus Gutierrez Bastida; Ulises Monter Valenzuela; Arturo Zamudio Guzman; David Rascon Chavez; Timoteo Pastrana Aponte; Salvador Garcia Garcia |
The present invention relates to a hydraulic reactor and classifier, with ultrasonic application for a continuous process of separation and recovering minerals or other type of materials or for the production of chemical compounds. It comprises a body of two main sections, an upper part and a lower part. The upper part comprises a container, a loading compartment, a lamella package, at least one ultrasound transducer package and a peripheral weir. The lower part comprises an inverted semi-pyramidal container having a square base, the square base attached to the upper part, at least one ultrasound transducer package at different location within the reactor to distribute the ultrasound effect all over the slurry flowing through the reactor, a nozzle for delivering a liquid or a gas. The final part comprises a pinch valve for discharging coarse particles as a slurry. |
252 |
Method and apparatus for recycling laminated film |
US740896 |
1996-11-04 |
US5871161A |
1999-02-16 |
Sadao Nishibori |
A method and apparatus for individually collecting layers from a laminated film containing many layers made of different materials by peeling or separating the layers one from the other. The laminated film having a plurality of layers made of different materials is shredded into a plurality of fragments to be processed; and the fragments to be processed are peeled or separated according to the type of layer by applying an impact frictional striking force to each of the fragments to be processed. Subsequently, the peeled or separated layers obtained in the peeling and separating step are subjected to a wind force classifying step. The collected layers in the mixed state are separated from one another, and they are individually collected. |
253 |
Beneficiation of saline minerals |
US465598 |
1995-06-05 |
US5651465A |
1997-07-29 |
Roland Schmidt; Dale Lee Denham, Jr. |
A process is provided for recovering a saline mineral from an ore containing the saline mineral and impurities. The process generally includes the steps of separating a first portion of impurities from the ore by density separation, electrostatically separating a second portion of impurities from the ore, and magnetically separating a third portion of impurities from the ore. The process can further include the steps of crushing the ore and dividing the crushed ore into a plurality of size fractions before the above-referenced separating steps. Furthermore, in order to increase the efficiency of the separating processes, the process of the present invention may further include the steps of drying the ore to remove surface moisture therefrom and de-dusting the ore to recover valuable fines. |
254 |
Method for sorting plastics from a particle mixture composed of
different plastics |
US512525 |
1995-08-07 |
US5566832A |
1996-10-22 |
Bjorn Stuckrad; Karsten Lohr |
A method for separating plastic particles by types from a particle mixture of plastics of different types by flotation. The plastic particles are initially processed by a type-dependent change in their wetting behavior in such a manner that the various types can be floated individually out of the particle mixture. This surface treatment of the plastic particles takes place prior to flotation and outside of the flotation device in a physically dry manner by plasma processing of the particle mixture followed by storage for a predetermined time period. Storage results in a material-specific classification wetting behavior. |
255 |
Apparatus for cryogenically separating elastomeric materials from
metallic and textile materials forming composites therewith |
US296646 |
1994-08-26 |
US5566550A |
1996-10-22 |
Gerardo Pagaza-Melero; Raymundo Fernandez-Y-Sosa; Santiago Bastida-Sanchez; Agustin Bastida-Sanchez; Victor Pagaza-Melero; Jesus F. Pagaza-Melero |
Apparatus for cryogenic separation of elastomeric products from metallic products and textile fibers combined as composite waste products having two cryogenic chambers capable of alternately receiving waste composite products to be directly contacted by a cryogenic fluid and for alternately discharging cryogenically frozen products therefrom. The chambers are in communication through a valved duct for transferring the cryogenic fluid from one chamber to the other alternately and there is a pressure equalizing valved duct to facilitate the fluid transfer in an equalized pressure environment. The chambers are rotatable through an angle sufficient to permit the cryogenic fluid transfer to be effected by gravity from one chamber to the other alternately, so that when one of the chambers is operating as a cryogenic chamber, the other can be discharged and reloaded and vice-versa. The cryogenic fluid is fed to the chamber operating as a cryogenic chamber in each cycle only to replenish the amounts lost through evaporation. |
256 |
Solid-liquid separation process using at least one polymer and
cavitation energy |
US402761 |
1995-03-10 |
US5472620A |
1995-12-05 |
Pin Y. Huang |
A process for separating solids from a fluid using at least one polymer and acoustic energy at or above cavitation is disclosed. The fluid containing the polymer is flowed into a vessel and acoustic energy is applied to the fluid at intensity sufficient to induce cavitation within the fluid. At least a portion of the solids are allowed to agglomerate in at least one position within the vessel. The agglomerated solids are then separated from the fluid. |
257 |
Benefication of saline minerals |
US66871 |
1993-05-25 |
US5470554A |
1995-11-28 |
Roland Schmidt; Dale L. Denham, Jr. |
A process is provided for recovering a saline mineral from an ore containing the saline mineral and impurities. The process generally comprises the steps of separating a first portion of impurities from the ore by density separation, electrostatically separating a second portion of impurities from the ore, and magnetically separating a third portion of impurities from the ore. The process can further include the steps of crushing the ore and dividing the crushed ore into a plurality of size fractions before the above-referenced separating steps. Furthermore, in order to increase the efficiency of the separating processes, the process of the present invention may further include the steps of drying the ore to remove surface moisture therefrom and de-dusting the ore to recover valuable fines. |
258 |
Apparatus and method for preparation for separation, recovery, and
recycling of municipal solid waste and the like |
US23051 |
1993-02-25 |
US5361994A |
1994-11-08 |
Clifford C. Holloway |
Apparatus and method for separation, recovery, and recycling municipal solid waste and the like by introducing solid waste materials into a pressure vessel having a rotatable section. The vessel is disposed for subjecting the waste material to heat and pressure while simultaneously applying an extruding action to the solid waste material. The extruding action is achieved by a rotatable extruder mechanism carried in the pressure vessel and rotated in response to the rotating section thereof. The rotation forces the processed solid waste material through a pair of constricted areas before the waste material is expelled from the pressure vessel by rotation of the extruder mechanism. |
259 |
Recycling post consumer plastic products |
US7499 |
1993-01-22 |
US5295582A |
1994-03-22 |
Ervin R. Dan |
The present invention relates to the cleaning of recyclable plastic. More particularly the recyclable plastic is treated at a frequency from 20 to 60 KHz, optionally in the presence of an antiseptic agent and in the absence of a surfactant. This treatment cleans waste, and particularly waste containing protein, such as medical or food waste so it is suitable for recycling. |
260 |
Method and apparatus for separating particulate material according to
conductivity |
US869206 |
1992-04-13 |
US5161695A |
1992-11-10 |
Edwin H. Roos |
Non-magnetic, conductive particles are separated from one another on the basis of their respective electrical conductivities. This is achieved by irradiating the particles with microwave or radio frequency electromagnetic radiation and simultaneously subjecting the particles to a magnetic field. The eddy currents induced in the particles by the electromagnetic irradiation interact with the magnetic field to cause movements of the particles which are dependent on their conductivities. |