Continuous filter for molten copper
AssigneeSouthwire Company
InventorsJohn G. Weber, E. Henry Chia
Life of this patent
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Abstract
Disclosed is apparatus for and a method of continuously filtering and optionally degassing molten copper and otherwise extracting impurities therefrom comprising disposable porous ceramic foam filtering means and means for supplying a deoxidizing or cleaning gas advantageously disposed within a chamber containing a flowing stream of molten copper.
Claims5
A method for purificatory filtration of molten copper, comprising:
- flowing a stream of molten copper through a ceramic foam filter initially comprising aluminum oxide and phosphate and being adsorptive of iron and calcium in the presence of molten copper, to substantially remove entrained inclusions and to substantially reduce the concentration of dissolved iron and calcium impurities.
In apparatus for continuous casting of copper including a continuously advancing mold cavity formed by at least one endless moving mold surface acting in conjunction with at least one other mold surface to form a closed cavity wherein molten copper is solidified in the shape of said mold cavity to form a cast bar, the improvement comprising:
- in combination with said continuous casting apparatus, a tundish adapted to direct a stream of molten copper to said mold;
- and a filter interposed within said tundish in the flowpath of said molten stream, said filter being a ceramic foam material initially comprising aluminum oxide and phosphate and being adsorptive of iron and calcium in the presence of molten copper, whereby upon said molten stream passing through said filter entrained inclusions are substantially removed and the concentration of dissolved iron and calcium impurities is substantially reduced.
Dependencies are inferred from the claim text.