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| Number | Title | Issue Date |
| 7115227 | Heat pipe A heat pipe assembly (10/110), under vacuum and having a working substance charged therein, comprising generally an evaporator (12/112) adapted to evaporate the working fluid and a condenser (16/116). The heat exchanging condenser is in fluid fl... | 10/03/2006 |
| 6228142 | Apparatus for keeping optimal penetration depth formed at front end of oxygen tuyere and method for keeping the same An apparatus for keeping an optimal penetration depth formed at the front end of an oxygen tuyere in the producing facilities of molten pig iron utilizing non-coking coal and a method for keeping the same. A sensor for measuring distance using a laser for... | 05/08/2001 |
| 5209893 | Adjustable burner insert and method of adjusting same An improved premix-type burner for a gas-fired metal processing furnace includes a burner insert externally adjustable over a stepless continuum. The burner insert includes a helical thread disposed on its outer diameter which cooperatively engages with a... | 05/11/1993 |
| 4588168 | Device for regulating the delivery of hot air in a tuyere stock of a shaft furnace and a tuyere stock which incorporates the same An apparatus for regulating the feed or delivery of hot air in the tuyere stock of a shaft furnace, and a tuyere stock which incorporates such a regulating apparatus is presented. The regulating apparatus may be used in conjunction with a tuyere stock for... | 05/13/1986 |
| 4518422 | Process and apparatus for refining steel in a metallurgical vessel A process and apparatus for the desulphurization, deoxidation and purification of a metal melt is presented. The process is particularly well suited for use in a ladle during the refining of steel. The present invention comprises means for defining at the... | 05/21/1985 |
| 4415362 | Nodular iron making and/or storing A melt of magnesium-containing nodular iron partially fills an enclosure forming a space above the melt which fills with the vapor of magnesium evaporated from the melt. Magnesium is fed into the space where the magnesium vaporizes and increases the vapor... | 11/15/1983 |
| 4169584 | Gas injection apparatus Gas is injected into molten metal, such as aluminum, to purify the molten metal either of dissolved gases (degassing), or of dissolved solids such as magnesium ( "demagging"). The apparatus for accomplishing this injection contains two metallic bath chamb... | 10/02/1979 |
| 4050681 | Apparatus for the controlled feeding of a refining gas and of a fluid protective medium An improved apparatus for supplying the refining gas and protective media utilized in the refining process described in U.S. Pat. No. 3,706,549 issued Dec. 19, 1972, including valves provided in the supply lines for preventing malfunctioning of the proces... | 09/27/1977 |
| 3938790 | Method and converter for refining pig-iron into steel Pig-iron is refined into steel by blowing oxygen and a protective screen of an encasing gas through injecting means located at or near the bottom of a converter containing a melt of molten metal. The encasing gas while protecting the injecting means, allo... | 02/17/1976 |
