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US 4,175,731 AGranted
Method and means for utilizing waste heat of molten slag
OwnerJohn S. Overdeck, John M. Overdeckinventors
Life of this patent
Estimating the term…
Abstract
A method and means for handling molten slag from a metallurgical furnace to recover waste heat from the molten slag and molten iron entrained in the slag. The waste heat of the slag is channeled to a heat utilizing device such as a steam generator or water heater, the molten iron is collected for return to steel making shops for further processing and the cooled and solidified slag is recovered for conventional slag processing.
Claims10
A waste heat and molten metal recovery system comprising:
- a molten slag producing apparatus;
- a reservoir basin for said molten slag, said basin comprising end walls, side walls, a floor, and a cover, a slag discharge opening in one of said end walls of said basin, said floor being slanted upward toward said slag discharge opening, a plugged aperture in a side wall of said basin at the nadir of said floor slant, and a slag entry aperture in said side wall of said basin elevated above the level of said slag discharge opening and adjacent the other end wall of said basin;
- a slag conveying means exterior of said basin at said slag discharge opening of said basin;
- a heat utilizing apparatus exterior of said basin;
- a heat insulated passageway connecting said basin and said heat utilizing apparatus and communicating the interior of said basin above said slag discharge opening with said heat utilizing apparatus;
- track means between said slag producing apparatus and said slag entry aperture of said basin;
- a second track means extending from said first mentioned track means to below said plugged aperture of said basin;
- and
- a vessel movable on said first and second track means for receiving molten slag from said slag producing apparatus and discharging said molten slag through said slag entry aperture into said basin, and for receiving molten metal from said plugged aperture when unplugged.
6 more elements
A waste heat and metal recovery system comprising:
- a molten slag and metal producing apparatus;
- a reservoir basin for said molten slag and metal, said basin comprising end walls, side walls, a floor, and a cover, a slag discharge opening in one of said end walls of said basin, said floor being slanted upward toward said slag discharge opening, a metal tapping aperture in a side wall of said basin at the nadir of said floor slant, and a slag entry aperture in said side wall of said basin elevated above the level of said slag discharge opening and adjacent the other end wall of said basin;
- a slag conveying means exterior of said basin at said slag discharge opening of said basin;
- a heat utilizing apparatus exterior of said basin;
- a heat insulated passageway connecting said basin and said heat utilizing apparatus and communicating the interior of said basin above said slag discharge opening with said heat utilizing apparatus;
- track means between said slag and metal producing apparatus and said slag entry aperture of said basin;
- a second track means extending from said first mentioned track means to below said metal tapping aperture;
- a vessel movable on said first and second track means for receiving molten slag and metal from said slag and metal producing apparatus and discharging said molten slag and metal through said slag and metal entry aperture into said basin, and for receiving molten metal from said metal tapping aperture;
- and
- a metallurgical tapping apparatus exterior of said basin for selectively closing and opening said metal tapping aperture.
7 more elements
Dependencies are inferred from the claim text.