Quotables
"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 6616730 | Method and device for activating a physical and/or a chemical reaction in a fluid medium It is possible to activate a physical reaction and/or a chemical reaction in a medium, comprising a solution and solid matter that is freely dispersed in said solution, by placing the mixture in a reactor that has two walls which are located opposite clos... | 09/09/2003 |
| 4883532 | Sonic method for facilitating the extraction of minerals from ore in a leachant An elastic bar member is clamped to an orbiting mass oscillator and the entire assembly is suspended from a cable or the like such that the bar member has freedom of lateral motion and is nakedly immersed in a leachant having a material contained therein ... | 11/28/1989 |
| 4548793 | Electrochemical elimination of nickel from lead containing chloride solutions The invention relates to a process for removing nickel from lead chloride dissolved into chloride brine to obtain lead chloride solution wherein the nickel concentration is under 50 mg/liter. The present invention comprises the following steps: (a) adjust... | 10/22/1985 |
| 4338169 | Process for promoting physical and/or chemical reactions performed in a fluid medium The process comprises subjecting a magnetic material dispersed in the fluid to the action of a variable magnetic field. It is thus possible to provide efficient stirring of this fluid and to facilitate reactions taking place, between a constituent of the ... | 07/06/1982 |
| 4309215 | Method for the cementation of metals A method for the cementation of a metal from a solution containing metallic ions by the addition of a finely divided cementation medium, wherein the cementation reaction is carried out in a reaction chamber located in an oscillating reactor which is at le... | 01/05/1982 |
| 4266972 | Process for non-ferrous metals production from complex sulphide ores containing copper, lead, zinc, silver and/or gold Metal sulphide ore is leached by water under a low pressure and oxidizing atmosphere to dissolve zinc and copper, hydrolyze iron to hematite, and leave lead and precious metals as insoluble sulphates. The residue is leached by sodium chloride and calcium ... | 05/12/1981 |
| 4249939 | Method of disposing of spent organic complexing solutions containing cuprous halides Copper is removed from spent solutions of complexing agents containing cuprous aluminum tetrahalide, such as CuAlCl4.toluene by (1) contacting said solutions with water so as to form a precipitate of cuprous halide, an aqueous phase and an orga... | 02/10/1981 |
| 4201573 | Recovery of metal values from a solution by means of cementation A method for the recovery of metal values from a solution by means of a cementation reaction in an oscillating container wherein the resulting cementate is converted by pyrometallurgical methods into molten metal and slag. In accordance with the present i... | 05/06/1980 |
| 4168970 | Purification of zinc sulphate solutions A method is provided for purifying zinc sulphate solutions containing copper, cadmium and cobalt impurities, which comprises, in a first stage, treating the impure zinc sulphate solution with zinc dust and an antimony and/or arsenic compound so as to form... | 09/25/1979 |
| 4152143 | Method and apparatus for precipitating metal cement Improved method adapted for the continuous precipitation of metal cement (especially copper cement) from an aqueous solution of a first metal (such as copper) mixed with pieces of second metal (such as iron) which is less noble than such first metal. The ... | 05/01/1979 |
| 4078040 | Method of employing elemental zinc for the purification of aqueous solutions of metallic salts An improved technique for purifying a solution of metallic salts from copper and cadmium contained in such solution is described. A bed of zinc granules is disposed on a grid at the bottom of a vertically arranged, cylindrical reaction chamber. The soluti... | 03/07/1978 |
| 3960723 | Magnetization of iron chromium system The present invention relates to a process for treating aqueous waste solutions containing complexing or oxidizing agents and dissolved metallic elements or compounds of copper, chromium, nickel, lead or tin. The waste solution is treated with finely divi... | 06/01/1976 |
| 3930846 | Method for precipitating copper metal from copper bearing solutions Precipitating copper metal from copper bearing solutions using scrap iron as a precipitant to form free copper metal precipitate. The scrap iron is retained in an unflooded bed in a container having a rotatable nozzle for spraying the copper bearing solut... | 01/06/1976 |
