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U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
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| Number | Title | Issue Date |
| 4769067 | Process for production of aluminum by carbothermic production of an alkaline earth metal aluminide such as calcium aluminide and recycling of reactant byproducts An improved process is disclosed for carbothermically producing an alkaline earth metal aluminide from an aluminum-bearing material which, in one aspect comprises forming a mixture of a carbonaceous reducing agent and a slag comprising the aluminum-bearin... | 09/06/1988 |
| 4769068 | Process for production of aluminum by carbothermic production of alkaline earth metal aluminide and stripping of aluminum from alkaline earth metal aluminide with sulfurous stripping agent An improved process is disclosed for carbothermically producing an alkaline earth metal aluminide from an aluminum-bearing material which, in one aspect comprises forming a mixture of a carbonaceous reducing agent and a slag comprising the aluminum-bearin... | 09/06/1988 |
| 4769069 | Process for production of aluminum by carbothermic production of alkaline earth metal aluminide and stripping of aluminum from alkaline earth metal aluminide with halide stripping agent An improved process is disclosed for carbothermically producing an alkaline earth metal aluminide from an aluminum-bearing material which, in one aspect comprises forming a mixture of a carbonaceous reducing agent and a slag comprising the aluminum-bearin... | 09/06/1988 |
| 4765832 | Process for carbothermic production of calcium aluminide using slag containing calcium aluminate An improved process is disclosed for carbothermically producing an alkaline earth metal aluminide from an aluminum-bearing material which, in one aspect comprises forming a mixture of a carbonaceous reducing agent and a slag comprising the aluminum-bearin... | 08/23/1988 |
| 4681626 | Method of refining aluminum The present invention provides a method of refining aluminum, according to which oxygen gas is blown into a carbon material filled in a blast furnace to form simultaneously both combustion regions where combustion of the carbon material takes place and hi... | 07/21/1987 |
| 4637591 | Dross cooler and processor The invention provides dross treatment apparatus comprising a drum rotatable about a horizontal axis with means to feed dross to the inside of the drum where it is cooled and broken by tumbling and then removed from the other end of the drum for separatio... | 01/20/1987 |
| 4575392 | Process for the recovery of liquid aluminium by compression of hot dross The present invention relates to a process and apparatus for the recovery of liquid aluminium by compression of hot dross. The process comprises placing the dross in a die up to a height which depends on the diameter of said die and which is lower at the cente... | 03/11/1986 |
| 4565572 | Process for recovering metal from aluminum dross A method for the recovery of free aluminum metal from its dross is disclosed. The dross is charged into a receptacle having at least one inclined sidewall and at least one passageway extending through the receptacle's bottom. The passageway is sized and c... | 01/21/1986 |
| 4527779 | Metal recovery compression mechanism An improved mechanism for recovery of metal, particularly aluminum, from metal bearing dross utilizes a trough for collection of the dross. A wedge member compresses the dross in the trough. In this manner, metal is decanted from the compressed dross and ... | 07/09/1985 |
| 4451287 | Flux in recovery of aluminum in reverberatory furnace A process for the recovery of metal, particularly aluminum is disclosed whereby flux is in a ratio of less than about 0.4 flux to inert material in the dross.... | 05/29/1984 |
| 4418892 | Aluminum furnace skim recovery system A reclaiming method and apparatus for reclaiming aluminum from the skim recovered from an aluminum furnace by a highly mechanized method and apparatus.... | 12/06/1983 |
| 4386956 | Metal recovery process from aluminum dross An improved method for recovery of metal, particularly aluminum, from metal bearing dross utilizes a trough for collection of the dross. A wedge member compresses the dross in the trough. In this manner, metal is decanted from the compressed dross and flo... | 06/07/1983 |
| 4337929 | Rotary furnace for melting metal A rotary furnace for recovering metals, such as aluminum. The furnace includes an outer cylindrical, open-ended drum which is mounted for rotation about its axis. Secured within the drum is a tapered kiln and the kiln is spaced inwardly of the drum to pro... | 07/06/1982 |
| 4073644 | Salt cake processing method and apparatus A method of recovering aluminum metal values and salt cake and recycling or reusing the same in an aluminum refining method is disclosed.... | 02/14/1978 |
| 4050999 | Process for the production and use of activated alumina to produce aluminum Production of an activated type alumina from aluminum dross by digestion with water, preferably pressurized. The peculiar properties associated with trace compounds present in the product make it useful for the recovery of noxious effluents from furnacing... | 09/27/1977 |
| 4040820 | Processing aluminum skim The invention relates to an efficient, salt-free method of recovering metallic aluminum from furnace skim wherein the skim is tumbled for a short period in a rotary furnace at a temperature between 1200° and 1500° F (649°-816° C) to separate the molte... | 08/09/1977 |
| 4033760 | Aluminum dross recovery method Dross, principally oxides and nitrides of aluminum and entrained metallic aluminum, is transferred quickly from the melting furnace to a cooling drum and cooled in less than 3 minutes to below 400° F. without substantial removal of metallic aluminum befo... | 07/05/1977 |
| 4030914 | Method of treating aluminum drosses, skims and slags Aluminum drosses, skims and slags are treated by melting under a cover flux comprising sodium chloride or potassium chloride or mixtures thereof in combination with calcium chloride, the calcium chloride comprising from about 1 to about 50% of the flux co... | 06/21/1977 |
| 3999980 | Fluxless recovery of metallic aluminum from wastes Aluminum metal is recovered from processing wastes, such as dross, beverage can scrap and the like, without use of a flux by heating the wastes to a temperature above the melting point of aluminum but below about 800° C while maintaining the wastes under... | 12/28/1976 |
