Back to results
US 4,705,260 AGranted
Furnace for heating and melting zinc
AssigneeRepublic Steel Corporation
InventorsRalph D. Geer, Robert L. Morgan, Dexter S. Senek
Life of this patent
Estimating the term…
Abstract
A furnace for heating and melting zinc comprising a reservoir, a movable upper section, pre-heaters supported on the upper section and immersion burners supported on the upper section and extending into the reservoir. The movable upper section can be raised and lowered relative to the level of molten zinc in the reservoir and thereby insure maximum heating efficiency of the zinc. In a preferred imbodiment the pre-heaters and immersion burners are gas fired.
Claims4
A furnace for heating zinc used for galvanization, comprising:
- (a) a reservoir having bottom and side walls, inwardly facing surfaces of which are constructed of non-ferrous refractory materials, and an upper opening;
- (b) a vertically movable horizontal furnace lid receivable in the upper opening within the side walls covering the reservoir and adjustable within the side walls in its height from the bottom wall while being maintained horizontal, the inwardly facing surface of said lid being constructed of non-ferrous refractory material;
- (c) a plurality of pre-heaters carried by said furnace lid and constructed and arranged to heat the furnace walls before the furnace is charged with zinc by directing heat toward inwardly facing wall surfaces of the reservoir;
- (d) a plurality of immersion heaters each having an outer immersible element constructed of non-ferrous refractory material, said heaters carried by said furnace lid and constructed and arranged to be immersed in molten zinc within the reservoir when the lid covers the reservoir, the extent of immersion being controllable by the movable furnace lid;
- and
- (e) means including said lid for controlling the extent of immersion of the immersion heaters in the molten zinc within the reservoir.
3 more elements
An apparatus for heating and melting zinc, comprising:
- (a) a reservoir having walls constructed of non-ferrous refractory materials for containing zinc;
- (b) a vertically movable wall portion including a horizontal cover portion substantially closing the reservoir above the level of the contents constructed of non-ferrous refractory materials;
- (c) a plurality of immersion heaters supported by said movable wall portion, each including an elongated heating element extending into the interior of said reservoir below the level of the contents and constructed of non-ferrous refractory material;
- (d) means including said movable wall portion for controlling the extent of immersion of the immersion heaters in the molten zinc within the reservoir while maintaining said movable wall portion horizontal;
- and
- (e) a plurality of non-immersible pre-heaters supported by said movable wall portion and including means for directing heat toward the interior of said reservoir before the reservoir is charged with zinc.
3 more elements
A furnace for heating zinc, comprising:
- (a) a reservoir having bottom and side walls constructed of non-ferrous refractory materials and encased in a metal shell;
- (b) a vertically movable, horizontal, furnace upper wall constructed of non-ferrous refractory materials and adjustable vertically while being maintained horizontal within the side walls relative to the level of zinc contained in the reservoir and movable to a position above the reservoir to facilitate repair and loading, said upper wall essentially closing the reservoir;
- (c) gasket material surrounding the perimeter of the upper wall and forming a seal between the reservoir side walls and upper wall when the upper wall is within the side walls;
- (d) a plurality of pre-heaters supported on said upper wall and wherein each pre-heater contains a nozzle which can be directed toward the inner walls of said reservoir and capable of pre-heating said inner walls to approximately 480.degree. C. prior to the introduction of zinc into said reservoir;
- (e) a plurality of immersion burners supported on said movable furnace upper wall, said burners including an elongated heating element constructed of silicon carbide extending downward from the upper wall receivable within the contents of the reservoir;
- and
- (f) means including said movable wall for controlling the extent of immersion of the immersion heaters in the molten zinc within the reservoir while maintaining said movable wall horizontal.
4 more elements
Dependencies are inferred from the claim text.