Blast furnace cast house pollutant suppression
AssigneeJones & Laughlin Steel Corporation
InventorStephen Vajda
Life of this patent
Estimating the term…
Abstract
Method and apparatus for suppressing formation of pollutants in a blast furnace casting system by occluding oxidizing gases, including ambient air, from the molten iron and slag discharged from the furnace.
Claims9
A method of suppressing formation of pollutants in an ironmaking blast furnace system having an iron trough, an iron runner, and a slag runner, each of which is adapted to carry a molten stream, which method comprises:
- occluding oxidizing gases, including ambient air, from at least said tap hole and said iron trough extending from said tap hole by covering
- said tap hole and said iron trough with hood means having no ventilating means said hood means arranged in relation to said taphole and said iron trough in a manner capable of preventing ventilation of said hood means.
In a blast furnace system including a furnace having a tap hole, said system having an iron trough, an iron runner, and a slag runner, each of which is adapted to carry a molten stream, the improvement which comprises:
- hood cover means for at least said tap hole and said iron trough, said hood cover means containing no ventilating means and arranged in relation to said taphold and said iron trough in a manner capable of preventing ventilation of said hood cover means and occluding oxidizing gases from said tap hole and from said iron trough extending from said tap hole.
In a blast furnace system comprising clay gun latch support means and an iron trough, the improvement comprising:
- transportable hood cover means for said iron trough, which hood cover means occludes oxidizing gases from therein and which includes a top portion tapering toward the blast furnace and terminating in a nose portion defining an end closure which accommodates positioning of said hood cover means beneath said clay gun latch support.
Dependencies are inferred from the claim text.