Claims
- 1. A means for introducing close-grained carbonaceous fuels, which are suspended in a carrier gas, and oxygen into an iron melt, comprising a housing, a movable valve member in said housing, a fuel supply pipe for admitting fuel to said housing, an oxygen supply pipe for admitting oxygen to said housing and a tuyere pipe operatively connecting said housing to a tuyere; a fuel aperture and an oxygen aperture in said housing, said movable valve member selectively opening the fuel aperture cross-section or the oxygen aperture cross-section and movement of said movable valve being regulated by the pressure of the oxygen in the supply pipe.
- 2. A means according to claim 1 wherein said oxygen supply pipe communicates with a valve chamber having a partition which, under the action of oxygen gas pressure, permits a change of the length of the valve chamber, the movable end of the valve chamber is connected to a dual-action valve member which monitors said fuel aperture cross-section, on the one hand, and said oxygen aperture cross-section, on the other hand, and said valve member is preloaded such that said oxygen cross-section is closed.
- 3. A means according to claim 1 or 2 wherein said valve member is disposed coaxially in said fuel supply pipe.
- 4. A means according to either of claims 1 to 3 wherein said partition is formed by a bellows.
- 5. A means according to either of claims 1 to 4 wherein the parts of the means through which oxygen flows are sealed gas-tight against the parts through which fuel flows.
- 6. A means according to either of claims 1 to 5 wherein a throttle member is provided, which determines said oxygen aperture cross-section.
Priority Claims (2)
Number |
Date |
Country |
Kind |
293433 |
Aug 1979 |
DEX |
|
2949801 |
Dec 1979 |
DEX |
|
Parent Case Info
This is a division, of application Ser. No. 177,162, filed Aug. 11, 1980.
US Referenced Citations (8)
Divisions (1)
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Number |
Date |
Country |
Parent |
177162 |
Aug 1980 |
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