Patent application number | Description | Published |
20100061876 | DYNAMIC DEHYDRIDING OF REFRACTORY METAL POWDERS - Refractory metal powders are dehydrided in a device which includes a preheat chamber for retaining the metal powder fully heated in a hot zone to allow diffusion of hydrogen out of the powder. The powder is cooled in a cooling chamber for a residence time sufficiently short to prevent re-absorbtion of the hydrogen by the powder. The powder is consolidated by impact on a substrate at the exit of the cooling chamber to build a deposit in solid dense form on the substrate. | 03-11-2010 |
20100272889 | PROCESS FOR PREPARING METAL POWDERS HAVING LOW OXYGEN CONTENT, POWDERS SO-PRODUCED AND USES THEREOF - The present invention is directed to a process for the preparation of a metal powder having a purity at least as high as the starting powder and having an oxygen content of 10 ppm or less comprising heating said metal powder containing oxygen in the form of an oxide, with the total oxygen content being from 50 to 3000 ppmf in an inert atmosphere at a pressure of from 1 bar to 10 | 10-28-2010 |
20110094226 | PROCESS AND APPARATUS FOR HIGH ENERGY EFFICIENCY CHEMICAL LOOPING COMBUSTION - Process and apparatus are provided for a high energy efficiency chemical combustion process. The process provides two reaction steps, both of which are exothermic. First, a reduced oxygen carrier is contacted with oxygen in a reactor to form an oxidized oxygen carrier, such as metal oxide or metal suboxide, and then the oxidized oxygen carrier is fed to a second reactor and combusted with a fuel. The reaction produces the reduced oxygen carrier and carbon dioxide. The reduced oxygen carrier from the second reactor is recycled back to said first reactor. Carbon monoxide can also be produced during the process depending on stoichiometric amounts of the reactants. Though the process can be performed in various types of reactor systems, one preferred embodiment is the flash furnace with the production of fly ash during combustion. The process is highly efficient and produces a large amount of usable work. | 04-28-2011 |
20110132534 | METHODS OF JOINING PROTECTIVE METAL-CLAD STRUCTURES HAVING LOW ATTENDANT ENERGY CONSUMPTION - The present invention is directed to a process for joining tantalum clad steel structures. The process broadly comprises:
| 06-09-2011 |
20110300396 | PROTECTIVE METAL-CLAD STRUCTURES - In various embodiments, a metallic structure includes first and second clad structures each comprising a protective layer disposed over a steel layer, a joint joining the steel layers of first and second clad structures, and, directly connecting the protective layers of the first and second clad structures, a layer of metal powder disposed in contact with (i) the joint, (ii) the protective layers of the first and second clad structures, and (iii) a portion of at least one of the steel layers proximate the joint. | 12-08-2011 |
20120145316 | METHODS OF JOINING METALLIC PROTECTIVE LAYERS - In various embodiments, protective layers are bonded to a steel layer and connected by a layer of unmelted metal powder produced by cold spray. | 06-14-2012 |
20120291592 | PROCESS FOR PREPARING METAL POWDERS HAVING LOW OXYGEN CONTENT, POWDERS SO-PRODUCED AND USES THEREOF - In various embodiments, low-oxygen metal powder is produced by heating a metal powder to a temperature at which an oxide of the metal powder becomes thermodynamically unstable and applying a pressure to volatilize the oxygen. | 11-22-2012 |
20120315387 | DYNAMIC DEHYDRIDING OF REFRACTORY METAL POWDERS - Refractory metal powders are dehydrided in a device which includes a preheat chamber for retaining the metal powder fully heated in a hot zone to allow diffusion of hydrogen out of the powder. The powder is cooled in a cooling chamber for a residence time sufficiently short to prevent re-absorbtion of the hydrogen by the powder. The powder is consolidated by impact on a substrate at the exit of the cooling chamber to build a deposit in solid dense form on the substrate. | 12-13-2012 |
20130155581 | RETRIEVAL OF HIGH VALUE REFRACTORY METALS FROM ALLOYS AND MIXTURES - Recovery of a metal from scrap materials or other source materials containing two or more metals or other materials by iodization of the materials or parts of them to create multiple metal iodides of respective metals, separating the iodides and dissociating at least one of the iodides to recover its metal component. | 06-20-2013 |
20130243673 | SEPARATION OF TUNGSTEN FROM AMMONIUM MOLYBDATE SOLUTIONS - Disclosed is process for the separation of tungsten from molybdenum and more particularly from ammonium molybdate solutions. The method comprises dissolving technical grade molybdenum trioxide in an aqueous ammonium hydroxide solution and further adding certain metal generating compounds to the aqueous solution thereby generating a tungsten-containing precipitate. Calcium, iron and manganese are the preferred metal generating compounds of the invention. Certain temperature and pH values of the system, as disclosed, are preferred for the precipitation of the tungsten from the ammonia molybdate solution. | 09-19-2013 |
20130264013 | METHODS OF JOINING METALLIC PROTECTIVE LAYERS - In various embodiments, protective layers are bonded to a steel layer and connected by a layer of unmelted metal powder produced by cold spray. | 10-10-2013 |
20130302519 | DYNAMIC DEHYDRIDING OF REFRACTORY METAL POWDERS - Refractory metal powders are dehydrided in a device which includes a preheat chamber for retaining the metal powder fully heated in a hot zone to allow diffusion of hydrogen out of the powder. The powder is cooled in a cooling chamber for a residence time sufficiently short to prevent re-absorption of the hydrogen by the powder. The powder is consolidated by impact on a substrate at the exit of the cooling chamber to build a deposit in solid dense form on the substrate. | 11-14-2013 |
20130340568 | PRODUCTION OF COPPER VIA LOOPING OXIDATION PROCESS - Copper is produced by a looping oxidizing process wherein oxidation of copper sulfide concentrate to molten blister copper by conversion with copper oxides (and optionally oxygen from air) in a one step, molten bath operation to produce molten blister copper, iron oxide slag, and rich SO | 12-26-2013 |
20140161715 | SULFIDE OXIDATION PROCESS FOR PRODUCTION OF MOLYBDENUM OXIDES FROM MOLYBDENITE - A looping method for production of MoO | 06-12-2014 |
20140311669 | METHODS OF JOINING METALLIC PROTECTIVE LAYERS - In various embodiments, protective layers are bonded to a steel layer, overlapped, and at least partially covered by a layer of unmelted metal powder produced by cold spray. | 10-23-2014 |