| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 201 | Process for purifying sodium hydroxide | US677754 | 1976-04-16 | US4065270A | 1977-12-27 | Keiichi Nakaya; Suekazu Hirata; Kunio Sato |
| An aqueous solution of sodium hydroxide containing soluble impurities such as a concentrated catholyte produced by a diaphragm electrolysis is cooled by a coolant or a heat-exchanger to form a slurry containing sodium hydroxide hydrate crystals and fine impurity crystals. The fine impurity crystals are adsorbed on bubbles which are formed by vaporizing a dissolved coolant or introducing a gas in the slurry and separated from the slurry. | ||||||
| 202 | Mineral ore concentractor | US568189 | 1975-04-15 | US3992286A | 1976-11-16 | Gregory Grosbard; Hugh A. Ghiringhelli |
| A desirable metal such as gold in a low grade ore has its concentration increased by electro-kinetically separating gangue from other components in the ore to form a concentrate. Separation is effected by inducing movement of externally conductive particles upwardly and radially outwardly over the walls of a container enclosing a dielectric liquid within which the ore is initially contained. An electric field is established for this purpose between the container walls and an electrode positioned above the surface of the dielectric liquid. | ||||||
| 203 | Process for electrostatic dressing and/or working up of salt and mineral mixtures | US35371873 | 1973-04-23 | US3802556A | 1974-04-09 | FRICKE G; SINGEWALD A |
| Process in which raw or crude salt and mineral mixture are intensively mixed with an aliphatic, unbranched fatty acid having a chain length of three to 18 carbon atoms or with an aromatic carboxylic acid or with mixtures of said aliphatic and aromatic acids and an ammonium salt of a lower aliphatic acid, and thereafter treated with air having a relative humidity of 5 to 40 percent in an electrostatic separation zone at a temperature of about 15* to about 40* C.
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| 204 | Method of refining nonferrous sulfide,arsenide and antimonide mineral substances | US3777005D | 1971-09-27 | US3777005A | 1973-12-04 | GERLACH J; GOCK E |
| NONFERROUS METAL SULFIDES, ANTIMONIDES AND ARSENIDES IN MINERAL CRYSTALLINE FORM, E.G. AS ORE, CONCENTRATES AND METALLURGICAL TAILINGS, BYPRODUCTS AND WASTE MATERIALS, ARE COMMINUTED, IN FOR EXAMPLE, A VIBRATING MILL BY IMPACT TECHNIQUES (VIBRATING IMPACT MILL) UNTIL THE X-RAY DIFFRACTION OR INTERFERENCE INTENSITY IS REDUCED, E.G. TO A RATIO OF COMMINUTED INTENSITY TO ORIGINAL INTENSITY OF LESS THAN 0.8. THE COMMINUTED PRODUCT IS THEN TREATED IN A SINGLE STEP WITH OXYGEN AND A LIXIVIANT FOR RECOVERY OF THE NONFERROUS METAL OR A SALT THEREOF. THE LATTER IS FOUND IN SOLUTION IN THE AQUEOUS PHASE.
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| 205 | Process for preparing highly free flowing rock or table salt | US3760941D | 1971-05-04 | US3760941A | 1973-09-25 | SINGEWALD A; FRICKE G |
| Process for preparing highly pure substantially free flowing rock or table salt from salt containing small amounts of anhydrite and kieserite which comprises admixing the rock salt with an anti-caking agent in the dry state, warming the mixture to a temperature of between 40*-120*C and subjecting the same to the action of high pressure electrostatic field.
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| 206 | Treatment of phosphate rock slimes by freezing | US3681931D | 1970-03-11 | US3681931A | 1972-08-08 | HADZERIGA PABLO |
| This process is a method of treating an aqueous inorganic colloidal suspension to make it amenable to separation by decantation, filtration, and centrifugation and comprises statically freezing the suspension and thawing the thus frozen suspension prior to separation by decantation, filtration, and centrifugation. In the preferred embodiment of the process, the suspension is kept in a frozen state for a predetermined length of time after the static freezing. This process is particularly adept at making phosphate rock slimes amenable to separation by the above-named methods.
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| 207 | Method and apparatus for removing suspended material from underground mine water | US3630358D | 1970-01-27 | US3630358A | 1971-12-28 | RALPH FRANK E |
| An apparatus and method is provided for continuously removing undesirable suspended material from a continuous stream of underground mine water by thermally decomposing the material to a residue and passing the residue back into the moving stream of underground mine water.
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| 208 | Methods of upgrading alumina-bearing materials | US3630351D | 1969-03-03 | US3630351A | 1971-12-28 | UHINCK RICHARD W |
| A continuous method of separating associated gibbsite (A12O3.3H2O) from the siliceous material contained in gibbsitebearing sands and alumina-bearing ores characterized by a reagent to a slurry of the raw material for the purpose of promoting separation and settling of slurrying the sand or ore with water and a reagent in an amount sufficient to cause separation of the siliceous material from the alumina and to permit settling of heavy siliceous material from the slurry. The reagent is selected from the group consisting of sodium hypochlorite, sodium pyrophosphate and ammonium hydroxide, and trisodium phosphate, wherein sodium hypochlorite is preferred.
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| 209 | Steel scrap oxidation acceleration by surface impregnation techniques | US3620715D | 1969-07-24 | US3620715A | 1971-11-16 | KHALAFALLA SANAA E; PAYNE SEQUOYA L |
| The surface of scrap steel from discarded auto bodies, etc. is impregnated with minute amounts of an oxide of an oxidation acceleration agent containing said agent in its highest valence state by immersion in a solution of the agent or by spraying. After such treatment the steel will be rapidly oxidized during a reduction-roasting operation.
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| 210 | Apparatus for separating gluten from starch and other solids | US3489605D | 1965-05-24 | US3489605A | 1970-01-13 | PLAVEN KARL ERIK B |
| 211 | Apparatus for dressing crude asbestos separated from the source rock | US57442566 | 1966-08-23 | US3428265A | 1969-02-18 | OESTERHELD KARL ADOLF |
| 212 | Method of ore sorting based on differential infrared emission | US50722465 | 1965-11-10 | US3395793A | 1968-08-06 | THOMPSON RICHARD L; DWYER FRANCIS B |
| 213 | Heat treatment of surface active reagents in flotation | US46285365 | 1965-06-10 | US3394893A | 1968-07-30 | GERALD MOSS; CYRIL STOCKILL EDWARD |
| 1, 041, 547. Separating minerals by flotation. ESSO RESEARCH & ENGINEERING CO. May 28. 1965 [June 11, 1964; Dec.23, 1964; April 29, 1965], Nos. 24276/64; 52178/64; and 18139/65. Heading B2H. Coal or other mineral material is separated from an aqueous slurry (or suspension) by adding to the slurry a water immiscible organic liquid (volatile liquid) which has a higher surface affinity for the material than has water and a boiling point lower than that of water and then heating the slurry to a temperature below the boiling point of water but at or above that of the volatile liquid whereby the material is carried to the surface and removed therefrom. A slurry of coal is introduced into a mixing vessel 1 and then fed by a pump 2 into a vessel 5 which preferably contains an inert atmosphere, a pump 4 serving to mix with the feed naptha (the volatile liquid) drawn from a line 15 and fuel oil (an involatile liquid) drawn from a pump 19. A steam coil 20 provides the necessary heat to float the coal as agglomerages or froth for removal by a scoop 6 which feeds rotary screens 8, 9 having a discharge end extending through the end of the vessel. Naptha evaporation from the slurry is condensed in a condenser 13 cooled by a refrigerating coil 14. The ash content is drawn from the bottom of the vessel through a line 16 as a slurry and passed through a filter 17 which discharges the ash through a line 18 and returns the water to the mixing vessel 1. The addition of fuel oil at 19 serves to prevent re-wetting of the coal by water as the naphtha evaporates and to facilitate de-watering in the screens 8, 9. A surface active compound may be added in addition to, or in place of, the fuel oil for the same purpose. Furthermore, the pH of the slurry may be adjusted by the addition of lime or sodium carbonate and air or other gas used to assist flotation. Instead of the screens 8, 9 a suction filter or weir may be employed. Other volatile liquids which may be used include benzene, benzene homologues, straight chain hydrocarbons and naphthenes. The involatile liquid (fuel oil) may be, for example, kerosene, gas oil, residual fuel oil, phenol extracts or coal tar. Flotation reagents may include oleic acid, sodium carbonate, lime, sodium ethyl xanthate, sodium alkyl sulphates, sulphuric acid, dextrin, starch, terpineol and phenol. | ||||||
| 214 | Method for dewatering coal slurries | US44181265 | 1965-03-22 | US3338411A | 1967-08-29 | DER GATHEN RUDOLF LUDWIG VON; FERDINAND PREISINGER |
| 215 | Method of treating ore and product | US35505464 | 1964-03-26 | US3313738A | 1967-04-11 | RINEHIMER WILLIAM A |
| 216 | Method for concentrating ores | US39504864 | 1964-09-08 | US3281235A | 1966-10-25 | HANNES ANNA |
| 217 | Method and apparatus for processing anisotropic solid substances | US43561465 | 1965-02-26 | US3257080A | 1966-06-21 | SNYDER FRANCIS H |
| 218 | Method and apparatus for the defibration of fibrous materials | US23171662 | 1962-10-19 | US3186647A | 1965-06-01 | PETERSON BACHER JAN |
| 219 | Method of separating differentially heated particles | US85623259 | 1959-11-30 | US3097160A | 1963-07-09 | RICH STANLEY R |
| 220 | Process of beneficiating langbeinite ores | US77954958 | 1958-12-11 | US3016138A | 1962-01-09 | LE BARON IRA M; FENSKE DOUGLAS H |
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