| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 241 | Treatment of waste material | US737081 | 1996-10-30 | US06070733A | 2000-06-06 | Dirk Osing |
| Shredder waste light fraction is converted into injectable material by being comminuted to an appropriate size. The copper and/or silica is then separated by magnetic separation so that the material may be injected into a metallurgical furnace or cement kiln. | ||||||
| 242 | Method for separating mixture of finely divided minerals and product thereof | US876523 | 1997-06-16 | US6068693A | 2000-05-30 | William L. Garforth; Robert J. Pruett; Dona L. Archer; Jun Yuan; Michael J. Garska; H. Vince Brown |
| A method of enhancing the brightness and increasing the yield of a kaolin clay by optimizing the removal of the titania and mica impurities in the clay and the amount of clay remaining in the slurry is disclosed. The method is a selective flocculation process wherein the clay is blunged, dispersed, and conditioned before flocculation. In the flocculation step, a high molecular weight anionic polymer and a low molecular weight anionic polymer, such as sodium polyacrylate, are added to the slurry after the conditioning process, whereby the titania-mica enriched flocs are separated from the suspension which is enriched with kaolin. This final kaolin product has titania levels ranging from 0.1% to 0.5%, a reduced mica level, a high usable product yield, and a brightness greater than 89.5 and at least 91.5. | ||||||
| 243 | Process for recovering mineral particles, metal particles or small precious stones from an aqueous slim associated with an ore body or mineral deposit or processing thereof | US275976 | 1999-03-25 | US6026965A | 2000-02-22 | Roberto Berardi; David Krofchak; Peter A. C. A. Howe; David M. Howe |
| A process for recovering mineral particles, metal particles or small precious stones from an aqueous slime associated with an ore body or mineral deposit or processing thereof, said aqueous slime containing mineral particles, metal particles or small precious stones in suspension with slime particles. The process includes adding a sufficient amount of deflocculating agent to the aqueous slime to cause deflocculation of the slime particles and produce a deflocculated suspension containing the mineral particles, metal particles or small precious stones. The deflocculated suspension is allowed to settle, and the settled material containing the mineral particles, metal particles or small precious stones is recovered. | ||||||
| 244 | Method of mineral ore flotation by atomized thiol collector | US535040 | 1995-12-18 | US5772042A | 1998-06-30 | Mark Cleeton Nott; Jonathan James Davies; Emmanuel Manlapig |
| A method for the flotation processing of mineral ores is disclosed. At least one collector is introduced into the flotation process by atomization. In a preferred aspect of the invention, the collector is provided as a mixture of the thiol and corresponding oxidized thiol (e.g., a dithiol). | ||||||
| 245 | Process for conditioning kaolin clays prior to removing impurities | US509506 | 1995-07-28 | US5685899A | 1997-11-11 | Joseph Allen Norris; Jorge L. Yordan |
| Kaolin clays are conditioned for the removal of colored titaniferous impurities by (A) first mixing the kaolin clay with a collector to condition the impurities, in the absence of a dispersant, but in the presence of sufficient water to yield a mixture having a solids content of at least 65 percent by weight and (B) then deflocculating the kaolin clay mixture at a pH of at least 4.0 with a dispersant in amounts sufficient to yield a kaolin clay slurry which is suitable for subsequent processing to remove colored titaniferous impurities. | ||||||
| 246 | Method for dewatering particles | US476513 | 1995-06-07 | US5587085A | 1996-12-24 | Roe-Hoan Yoon; Gerald H. Luttrell |
| Fine particles are dewatered in an energy efficient process in which a non-polar liquid or a mixture of different hydrophobic liquids are used to displace the water from the particle surface. Thermodynamically, this process is spontaneous. The only energy required for this process is to recover the hydrophobic liquid(s) for recycling purposes. The hydrophobic liquids are recovered in gaseous form either by lowering the pressure or by heating, and converted back to liquid form for re-use. The most economical reagents that can be used for this purpose include propane, butane, pentane, and ethane. Carbon dioxide may also be used for the dewatering process described in the present invention. The process of dewatering by displacement is capable of achieving the same or better level of moisture reduction as thermal drying but at substantially lower energy costs. | ||||||
| 247 | Method for dewatering fine coal | US229012 | 1994-04-18 | US5458786A | 1995-10-17 | Roe-Hoan Yoon; Gerald H. Luttrell |
| Fine coals are dewatered in an energy efficient process in which a non-polar liquid or a mixture of different hydrophobic liquids are used to displace the water from the coal surface. This process works with higher rank coals that are naturally hydrophobic so that the coal surface from which the water is displaced has a stronger affinity for the hydrophobic liquid than the water. Thermodynamically, this process is spontaneous and, hence, requires no energy. The only energy required for this process is to recover the spent hydrophobic liquid(s) for recycling purposes. The hydrophobic liquids are recovered in gaseous form either by lowering the pressure or by heating, and coverted back to liquid form for re-use. The most economical reagents that can be used for this purpose include propane, butane, pentane, and ethane. Carbon dioxide can also be used for the dewatering process described in the present invention. The process of dewatering by displacement is capable of achieving the same level of moisture reduction as thermal drying but at substantially lower energy costs. | ||||||
| 248 | Machine for recycling plastic containers, in particular bottles | US50294 | 1993-05-10 | US5390799A | 1995-02-21 | Dario Previero |
| The machine comprises a hollow rotary body (1) of large dimensions which may be loaded with the containers to be recycled, nozzles for supplying and spraying washing fluid at a predetermined temperature to the rotary body (1) for the mutual separation and washing of the containers and the initial separation of labels and bases, and mechanical impact devices (2), (21, 23) housed in the rotary body (1) and actuated by the rotation of this body so as to exert on the containers a mechanical action suitable for the mutual separation of the containers themselves, the separation of the stoppers and the completion of the washing and label and base separation operation. The rotary body (1) may have an inlet opening (5) and an outlet opening (7) for the containers to be recycled or a single inlet and outlet opening (30) so as to form a machine operating continuously or discontinuously respectively. | ||||||
| 249 | Hydrophobic polyelectrolyte coagulants for concentrating coal tailings | US931828 | 1992-08-18 | US5330546A | 1994-07-19 | Manian Ramesh; Ram A. Venkatadri; Lawerence J. Connelly; Jeffrey R. Cramm |
| A method for concentrating coal tailings which comprises steps of: feeding the coal tailings to a thickener; treating the coal tailings with a hydrophobic polyelectrolyte copolymer coagulant which comprises diallyldimethylammonium chloride and a more hydrophobic monomer, the coagulant is added to the coal tailings in an amount between about 0.05 to about 0.25 lb/ton; treating the coal tailings with a flocculant in an amount between about 0.05 to about 0.25 lb/ton; discharging substantially concentrated tailing; and withdrawing substantially clarified liquid from the thickener. | ||||||
| 250 | Method for separating fine particles by selective hydrophobic coagulation | US513884 | 1990-04-24 | US5161694A | 1992-11-10 | Roe-Hoan Yoon; Gerald H. Luttrell |
| A process of selectively agglomerating coal in an aqueous environment while leaving the mineral matter dispersed has been developed. This process is autogenous for hydrophobic particles in that neither an agglomerating agent nor an electrolytic coagulant is needed. It is based on the finding that hydrophobic particles are pushed against each other by the surrounding water structure. This process, which is referred to as selective hydrophobic coagulation, is driven by the so-called hydrophobic interaction energy, which is not included in the classical DLVO theory describing the stability of lyophobic suspensions. The relatively small coagula formed by the selective hydrophobic coagulation process can be readily separated from the dispersed mineral matter by several different techniques such as screening, elutriation, sedimentation and froth flotation. | ||||||
| 251 | Cationic processing of kaolin ores | US570990 | 1990-08-22 | US5061461A | 1991-10-29 | Paul Sennett; Steven A. Brown |
| A method for recovering a fine particle size fraction of a negatively charged mineral from an ore, such as a kaolin clay crude, which comprises forming an aqueous pulp of the ore, dispersing the pulp by adding thereto sufficient water-soluble organic cationic dispersant to impart a positive zeta potential to said particles and, preferably, an acidic pH to said pulp, removing coarse particles from said dispersed pulp and fractionating the dispersed pulp to separate a fine particle size fraction of mineral particles from coarser particles. | ||||||
| 252 | Method of separating carbonaceous components from particulate coal containing inorganic solids and apparatus therefor | US437763 | 1989-11-16 | US4998624A | 1991-03-12 | C. Edward Capes; Richard D. Coleman; Joseph L. S. Croteau; William L. Thayer |
| Carbonaceous components are separated from particulate coal containing inorganic solids by agitating and aerating the coal, agglomerating oil and water to form agglomerates of carbonaceous components of the coal and oil with air trapped in the agglomerates. The air trapped in the agglomerates makes them buoyant so that they collect at the surface of the water, for easy removal, while inorganic residual solids collect at the bottom of the water. The inorganic solids containing coal comprise previously formed agglomerates which are broken down by the agitation to form a slurry. In the latter case the process is for removal of inorganic solids which were not removed during the initial agglomeration. The agitation may be accomplished by a stirrer, impeller or a pump. | ||||||
| 253 | Process for beneficiation of coal by selective caking | US276678 | 1988-11-28 | US4946474A | 1990-08-07 | Antonio Vettor; Nello Passarini; Armando Marcotullio |
| A process is disclosed for beneficiation of coal by selective caking, in which process a caking mixture is employed consisting of:one or more solvents selected among light hydrocarbons having boiling points not higher than 70.degree. C.;one or more non-ionic additives selected among oil soluble propoxylated or propoxylated-ethoxylated phenolic or alkylphenolic compounds;possible one or more heavy co-caking agents selected among coal-derived oils having boiling points between 200.degree. C. and 400.degree. C., or the residual products of petroleum refining, or mixtures thereof. | ||||||
| 254 | Separation of matter by floatation | US95864 | 1987-09-14 | US4830738A | 1989-05-16 | David A. White; John M. Taylor |
| Matter is floated to the surface of a liquid by bonding ions to the surface of the matter to give the matter a charge, and forming a froth with the aid of a frothing agent having groups of opposite charge to the ions so that the frothing agent bonds to the matter and is carried in the froth to the surface of the liquid. By removing the froth the matter can be separated from any inert matter present in the liquid. The oxidation state of the surface of the matter may be changed before bonding takes place with the ions to one which facilitates that bonding. The matter can be particulate or dissolved ions. For example, uranium dioxide particles are oxidized with hydrogen peroxide, sodium carbonate added to produce a negatively charged uranyl carbonate complex and a froth formed with the aid of cetyl trimethylammonium bromide. Cationic groups in the latter bond to the uranyl carbonate complex causing the uranyl carbonate complex to be concentrated in the froth at the surface of the liquid. The froth is then skimmed off to remove the uranium dioxide particles. | ||||||
| 255 | Separation of ash from regenerated adsorbent | US9498 | 1987-02-02 | US4778598A | 1988-10-18 | Mark C. Hoffman; Marvin J. Dietrich; Thomas P. Oettinger |
| A process for separating ash particles from an aqueous slurry containing a mixture of regenerated adsorbent (e.g., carbon) and ash particles includes the steps of settling the slurry to produce a solid phase including the mixture of adsorbent and ash particles and a supernatant or a clarified aqueous phase. After separation of the aqueous phase, a slurry of the solid phase is diluted with water and a dispersing agent for promoting suspension of the ash particles and an anionic polymer for promoting settling of the adsorbent particles are added. The thus-treated, dilute slurry is settled to produce an aqueous phase containing primarily suspended ash particles and a solid phase including carbon particles. After separation, the solid phase can be returned to a wastewater treatment system. | ||||||
| 256 | Particle separation | US836253 | 1986-03-05 | US4756823A | 1988-07-12 | Derek O'Neill; James A. Robson; Leonard K. Pugh |
| The present invention provides a blended preparation for the separation especially of coal particles from the tailings which are contained in the fines produced in coal mining. The blended preparation is used instead of or in addition to the conventional froth oil. The blended preparation comprises froth oil, flocculating agent, emulsifying agent, water and optionally, anti-freeze. The use of the preparation results in faster separation and saving in flocculating agent. | ||||||
| 257 | Separation of viscous hydrocarbons and minerals particles from aqueous mixtures by mixtures by oleophilic adhesion | US849546 | 1986-04-08 | US4744889A | 1988-05-17 | Jan Kruyer |
| A method and apparatus for separating an oil phase from an aqueous phase by means of a rotating drum apparatus containing one or more compartments, each being partially filled with oleophilic free bodies. When containing two or more compartments, they are separated by an apertured baffle. The interior surfaces of the drum are oleophilic and the portion of the drum sidewall, where the mixture is removed is apertured. Due to the oleophilic free bodies and interior oleophilic surfaces, the aqueous phase velocity through the drum is faster than the oil phase which adheres to the oleophilic surfaces causing an in situ buildup and agglomeration of oil phase in the drum. The mixture exiting the apertured drum sidewall is partitioned by the tumbling free bodies, oleophilic drum surfaces and drum rotation such that aqueous phase leaves the drum between the 6 and 9 o'clock positions of counter clockwise rotation where free body concentration is minimal. The oil phase is carried with the free bodies as the drum rotates and is extruded through the apertures to the outside of the drum between the 3 and 6 o'clock positions where free body concentration is greatest. A scraper or an endless oleophilic belt partly wrapped around the apertured portion of the drum remove the extruded oil phase from the drum surface. The endless belt may be a woven mesh made of plastic or metal or may be a metal belt of joined flattened spiral metal strands. | ||||||
| 258 | Method of separating solids by simultaneous comminution and agglomeration | US622340 | 1984-06-19 | US4730787A | 1988-03-15 | Olev Trass |
| A process is provided for the separation of a solid into its constituent lyophobic and lyophilic components by comminution and agglomeration in liquids to which the two components are respectively lyophobic and lyophilic. The process has particular application in coal beneficiation wherein ash particles are liberated into a water phase and coal particles are agglomerated with oil. The operations of comminuting and agglomerating are combined in a single step by performing the process in a mill having positive transport capability. | ||||||
| 259 | Concentration of silicon carbide | US861066 | 1986-05-08 | US4700898A | 1987-10-20 | Remi Tremblay |
| According to the invention, after having previously crushed and ground a starting material containing silicon carbide, the latter is treated by separation in a dense medium, such as one comprising ferrosilicon or a suspension of magnetite in water. There is obtained a concentrate of silicon carbide without having to use the step of manual sorting. | ||||||
| 260 | Conditioning of carbonaceous material prior to physical beneficiation | US863650 | 1986-05-15 | US4695372A | 1987-09-22 | Robert P. Warzinski; John A. Ruether |
| A carbonaceous material such as coal is conditioned by contact with a supercritical fluid prior to physical beneficiation. The solid feed material is contacted with an organic supercritical fluid such as cyclohexane or methanol at temperatures slightly above the critical temperature and pressures of 1 to 4 times the critical pressure. A minor solute fraction is extracted into critical phase and separated from the solid residuum. The residuum is then processed by physical separation such as by froth flotation or specific gravity separation to recover a substantial fraction thereof with reduced ash content. The solute in supercritical phase can be released by pressure reduction and recombined with the low-ash, carbonaceous material. | ||||||
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