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| Number | Title | Issue Date |
| 7976774 | Composite sparger A composite sparger for use in elevated temperature and corrosive environments. The composite sparger is formed from a substrate tube with a thermally conductive interlayer on its surfaces exposed to the reactor environment. The thermally conductive interlayer is pr... | 07/12/2011 |
| 7968048 | Composite sparger A composite sparger for use in elevated temperature and corrosive environments. The composite sparger is formed from a thermally conductive non-combustible metal substrate. The surfaces of the conductive non-combustible metal exposed to the reactor environment are p... | 06/28/2011 |
| 7665362 | Systems, methods and apparatus for non-disruptive and non-destructive inspection of metallurgical furnaces and similar vessels Some embodiments of the present invention provide systems, methods and apparatus for more accurately determining the thickness of a refractory lining included in an operating metallurgical furnace. Specifically, in some embodiments a transient propagated stress wave... | 02/23/2010 |
| 7449142 | Plant for use in continuous steelmaking process A plant for the continuous manufacture of steel includes a direct reduction furnace for producing direct reduced iron (DRI) and a stationary electric arc furnace for melting the DRI. The electric arc furnace has a plurality of electrodes for melting the DRI. Heat fo... | 11/11/2008 |
| 7381384 | Insulating inserts for elevated temperature process vessels Insulating members are provided for use in nozzles of elevated temperature process vessels employing a structural metal shell (24), an insulating refractory lining (14) and a corrosion-resistant membrane (18) lining between the structural shell ... | 06/03/2008 |
