| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 261 | Ultrasonic vibrator tray processes | US488275 | 1990-03-02 | US5087379A | 1992-02-11 | William E. Morton; Harold V. Fairbanks; James Wallis; Raymond L. Hunicke; Joseph Krenicki |
| Processes and apparatus for treatment of flowing slurries of particulate material mixed in liquid employ a wide, elongated downwardly-slanted, metal tray with upturned edge flanges, cable-suspended for unrestrained vibratory flexing and undulation. The tray is provided with a plurality of ultrasonic transducers mounted on its underside, and the flowing slurry is delivered to the upper tray end, flowing lengthwise down the tray in a shallow flowing sheet. Ultrasonic vibratory energy coupled through the tray to the flowing slurry has a "microscopic scrubbing" action on all particles and agglomerates, breaking the surface tension on the particle, cleaning particle surfaces, and separating different constituent particles and coatings of gels, slimes, algae, clay or mud. Mixtures of fine particles of coal or other valuable minerals with ash, clay, rock or sand particles are separated with unexpected efficiency by these techniques. In a second embodiment, a second reflection tray is provided superimposed on the first tray. | ||||||
| 262 | Manipulating particulate matter | US153833 | 1988-01-27 | US4877516A | 1989-10-31 | Cornelius J. Schram |
| An acoustic standing wave is established in a fluid medium with a varying energy density in its nodal planes. Particles in the fluid medium responsive to the acoustic energy accumulate at these nodal planes and by the action of the variations of energy density in conjunction with the fluid viscous forces and/or field forces acting in the direction of the nodal planes, the movement of the particles held at these planes can be controlled. The adverse effects of attenuation of the acoustic beams producing the standing wave are reduced in this system, because any streaming due to imbalance of the acoustic forces forming the standing wave does not act in the direction in which the movement of the particles can be controlled. | ||||||
| 263 | Coal desulfurization using bacteria adaptation and bacterial modification of pyrite surfaces | US854509 | 1986-04-22 | US4775627A | 1988-10-04 | Yosry A. Attia; Mohamed A. Elzeky |
| The invention relates to the desulfurization of high sulfur coal, and specifically to the removal of pyrite from high sulfur coal via separation processes based on relative hydrophobicity. The surfaces of the pyrite particles are modified so as to be more hydrophilic by pre-conditioning of the coal with a culture of thiophilic bacteria such as Thiobacillus ferroxidans, and the coal is then subjected to the separation process. The bacterial culture is preadapted to pyrite and to the pyrite surface modification step conditions for a period of several weeks which allows the commercial preconditioning step to be accomplished in less than one hour and typically in five to fifteen minutes. | ||||||
| 264 | Manipulation of particles | US751736 | 1985-06-20 | US4743361A | 1988-05-10 | Cornelius J. Schram |
| Separation of particles types from a mixed population of particles in a liquid is obtained in an ultrasonic wave produced by interference between the outputs from spaced ultrasonic sources (115,118). One or more selected particle types may be separated by displacement axially along the standing wave or may be carried transversely through the standing wave or by combining both methods. The described separation can be achieved by control of flow of the liquid or giving the standing wave a drift, or by controlling the intensity or the frequency of the standing wave or by any combination of these factors. The preferred ultrasonic frequency range is between 100 kHz and 100 MHz. The process is particularly suitable for the separation of biological particles, from macromolecules to plant cells. | ||||||
| 265 | Selective resin flotation from coal by controlled oxidation | US920125 | 1986-10-17 | US4724071A | 1988-02-09 | Jan D. Miller; Ye Yi |
| Disclosed is a process for separating resin from reduced size resin-bearing coal particles by treating the particles with ozone. Particles of reduced size resin-bearing coal are preferably mixed with water to form a slurry. The slurry is then treated with ozone for a short length of time. The slurry is then subjected to froth flotation. The ozone selectively oxidizes the coal, decreasing its hydrophobicity causing the relatively more hydrophobic resin to attach to the bubbles formed during the flotation process. A much improved separation efficiency for resin flotation from coal is observed. | ||||||
| 266 | Coal cleaning by gaseous carbon dioxide conditioning and froth flotation | US778783 | 1985-09-23 | US4676804A | 1987-06-30 | Jan D. Miller; Manoranjan Misra |
| A process for froth flotation of coal using gaseous carbon dioxide includes a preconditioning treatment of the coal with gaseous carbon dioxide followed by froth flotation, preferably also using gaseous carbon dioxide. The pretreatment causes the coal to show improved results in that less reagent promoter and frother are required, and the flotation time is reduced. The process is particularly useful for producing "super" clean coal. | ||||||
| 267 | Process for separating porous materials from less porous materials | US658627 | 1984-10-09 | US4591431A | 1986-05-27 | Rabindra K. Sinha |
| A process for separating porous components from non-porous components of a mixture of granular materials comprising the steps of:(a) contacting the mixture of the porous and non-porous materials with a gas capable of adsorbing in the pores of the porous component;(b) discharging the so charged or loaded mixture into a liquid in which the adsorbed gas is allowed to desorb from the porous componet, the viscosity and surface tension of the liquid being chosen so that the desorbed gas remains attached to the porous component with the specific gravity of the liquid chosen to separate the so desorbed porous component from the nonporous component; and(c) separating the floating materials from those of sinking materials in the liquid of Step (b). | ||||||
| 268 | Coal treatment method and product produced therefrom | US666135 | 1984-10-30 | US4543104A | 1985-09-24 | George E. Brown, Jr.; Bruce N. Hoppert |
| Disclosed herein is a method for treating raw coal with ozone in aqueous suspension to modify the surface of the coal particle and release the ash constituents thereby permitting a more thorough separation of coal from ash by conventional means. The process also provides a mixture which is easily dewatered. | ||||||
| 269 | Process for purifying graphite | US438814 | 1982-11-03 | US4496533A | 1985-01-29 | Richard A. Clausius |
| A process for purifying graphite comprising:(1) comminuting graphite containing mineral matter to liberate at least a portion of the graphite particles from the mineral matter;(2) mixing the comminuted graphite particles containing mineral matter with water and hydrocarbon oil to form a fluid slurry;(3) separating a water phase containing mineral matter and a hydrocarbon oil phase containing graphite particles; and(4) separating the graphite particles from the hydrocarbon oil to obtain graphite particles reduced in mineral matter.Depending upon the purity of the graphite desired, steps of the process can be repeated one or more times to provide a progressively purer graphite. | ||||||
| 270 | Process for separating high viscosity bitumen from tar sands | US194515 | 1980-10-06 | US4410417A | 1983-10-18 | Jan D. Miller; Manoranjan Misra |
| A novel process for separating high viscosity bitumen from tar sand. The process includes grinding the tar sand to obtain phase disengagement of the bitumen phase from the sand phase and thereafter using flotation techniques to obtain phase separation of the bitumen phase from the sand phase. Phase disengagement is assisted by using a suitable wetting agent during the crushing step while the phase separation step is assisted by the inclusion of a promoter oil for the flotation step. | ||||||
| 271 | Partial oxidation with recycle of recovered carbon | US373367 | 1982-04-30 | US4392981A | 1983-07-12 | Roger J. Corbeels; Charles G. Sengenberger |
| Unconverted char in a mixture of particles formed in the partial oxidation of an ash-containing solid fuel is recovered by grinding the mixture and subjecting the ground material to froth flotation. | ||||||
| 272 | Apparatus for separating paper fibres from portions of polyethylene film material | US849548 | 1977-11-08 | US4162768A | 1979-07-31 | Blaine Froats |
| An apparatus is disclosed for separating polyethylene film from paper fibre. The polyethylene film contaminated with paper fibres is subjected to treatment that converts the paper fibres into substantially uniform balls which are separated by gravity by being entrained in a stream of air with the polyethylene film pieces and impacted against a plurality of impact surfaces and the relatively light polyethylene film being separated from the relatively heavier damp paper fibres by means of a plurality of baffle separators relying upon gravity separation of the heavier components. Provision is made to remove the damp paper fibre balls and recover the polyethylene film from the apparatus. | ||||||
| 273 | Separation of tobacco fines from sand | US16663571 | 1971-07-27 | US3837481A | 1974-09-24 | HEITKAMP N; STUNGIS G; MERKER S |
| Tobacco fines, mixed with sand, are puffed employing microwave energy to a size at least sufficient to be used directly in cigarette manufacture and are then separated from the sand for use in tobacco products. Other botanicals may be similarly treated.
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| 274 | Fluidized bed processing of carbon black | US25921272 | 1972-06-02 | US3831747A | 1974-08-27 | SCOTT O; SETLIFF B |
| An improved manufacturing technique for simultaneously cooling and separating ''''fines'''' and/or contaminants from granular materials or powders such as carbon black is disclosed. The process includes the use of a fluidized bed to effect the removal of fines and foreign matter, the quenching of exothermic reactions and extinguishing of fires as they may exist and the continuous cooling of hot granular materials such as pelletized carbon black. Due to the high rate of heat transfer in the fluidized bed, very rapid cooling of the material is accomplished and in a manner such that, for example, cooled carbon black shows no tendency to spontaneously generate heat or to burn or begin or continue rapid oxidation while in bulk storage and/or transporting facilities. Through proper instrumentation of the fluidized bed, the presence of exothermic reactions, such as fires in the dryer as well as the presence of indothermic reactions, such as the presence of ''''wet'''' black can be simply and easily detected.
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| 275 | Flotation recovery of zinc sulphide from ore | US3745102D | 1971-11-30 | US3745102A | 1973-07-10 | BANERJI B |
| THE INVENTION RELATES FLOATION RECOVERY OF ZINC SULPHIDE FROM A SLURRY CONTAINING ZINC SULPHIDE BEARING ORE IN GROUND FORM BY ADDING TO THE SLURRY A COLLECTOR AND THEN A FROTHING AGENT AND PASSING A DIRECT CURRENT FROM A LOW VOLTAGE SOURCE BETWEEN COPPER ELECTRODES THROUGH THE SLURRY.
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| 276 | Separation of discolorants from clay | US3659708D | 1968-11-04 | US3659708A | 1972-05-02 | MORRIS HORTON H; OLIVIER JAMES P; ROSS SYDNEY |
| A process for beneficiating a dispersed kaolin clay mass by removing from a dispersed clay mass the contaminant which causes the formation of a thin, dull layer of yellow or brownish-yellow material, commonly referred to as ''''scum,'''' on surfaces of dried material containing the dispersed clay. The process comprises raising the pH of an aqueous dispersion of the clay to at least 12 and at that pH separating the insoluble clay from the solubilized discoloring contaminant.
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| 277 | Method for bleaching gray kaolin clay | US3616900D | 1969-07-09 | US3616900A | 1971-11-02 | CECIL TOM A; JACOBS DANIEL A |
| Sedimentary gray kaolin clay containing relatively large amounts of iron and organic impurities is bleached by dispersing finely divided bubbles of ozone gas into a fluid, aqueous slip of the clay. The slip is acidified, flocculated, filtered and washed.
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| 278 | Process of separating gluten from starch and other solids | US3575710D | 1968-11-06 | US3575710A | 1971-04-20 | PLAVEN KARL ERIK BERNHARD |
| A PROCESS FOR SEPARATING GLUTEN FROM STARCH IN A PRETREATED DOUGH MADE FROM FLOUR AND WATER. A PUMP HAS AN INLET AND AN OUTLET AND A FIRST PIPE FOR LEADING THE PRETREATED DOUGH TO THE INLET. A SCREEN CONNECTED TO THE OUTLET BY A SECOND PIPE SEPARATES THE GLUTEN AND WATER. A THIRD PIPE LEADS THE WATER SEPARATED FROM THE GLUTEN FROM THE SCREEN AND A FOURTH PIPE LEADS THE GLUTEN SEPARATED FROM THE SCREEN. A PREFORATED PALTE LOCATED BETWEEN THE OUTLET FROM SAID PUMP AND THE INLET TO THE SCREEN IS PROVIDED THROUGH WHICH THE GLUTEN LUMPS ARE PRESSED BY THE AID OF THE WATER. A SECOND SERIES OF ELEMENTS AS ABOVE IS CONNECTED TO THE FOURTH PIPE AND ADDITIONAL SERIES AS DESIRED SIMILARLY CONNECTED. ADDITIONAL MEANS ARE PROVIDED TO SUPPLY WATER TO THE SECOND PIPES. THE GLUTEN WHEN PRESSES THROUGH THE RESPECTIVE PASSAGES IS FIRST GIVEN A SHAPE OF A THIN-WALLED TUBE OR BLISTER WHICH IS THEN TORN BY THE ACTION OF THE LIQUID UNDER PRESSURE INTO THIN THREADS OR BANDS WHICH AFTER THE GLUTEN HAS LEFT THE PASSAGES AGAIN COLLECT INTO LUMPS OF A POROUS SPONGE-LIKE STRUCTURE, SO THAT THE GLUTEN SHALL HAVE LARGE SURGBACES OF CONTACT WITH THE WATER, WHICH FACILITATES AND ACCELERATES REMOVAL OF THE STARCH GRANULES.
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| 279 | Method for separating asbestos fibers from foreign solids | US3424307D | 1965-12-30 | US3424307A | 1969-01-28 | SHIUH CHUNG HSIUNG |
| 280 | Separation of ore particles preferentially coated with liquid fluorescent material | US41629364 | 1964-12-07 | US3356211A | 1967-12-05 | MATHEWS TED C |
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