Metallurgical apparatus – Means for melting or vaporizing metal or treating liquefied... – By stirring or mixing molten metal
Patent
1992-09-04
1994-05-03
Andrews, Melvyn J.
Metallurgical apparatus
Means for melting or vaporizing metal or treating liquefied...
By stirring or mixing molten metal
266901, 366325, 416244R, 416237, 416243, 464182, C22B 900
Patent
active
053080459
ABSTRACT:
A scrap melter apparatus which includes a drive motor disposed above a molten metal bath, and a shaft attached to a bottom of the drive motor, and protrudes partway into the molten metal bath. A scrap melter impeller is attached to the bottom of the shaft. The impeller is a rectangular block of refractory metal, having a flat upper surface and a formed lower surface. The formed lower surface includes a first area disposed in a central portion of the metal block which has an even thickness from a first side of the impeller to a second side of the impeller. A second area is adjacent to the first area, and is tapered from a thin section at the first side of the metal block to a thick section at the second side of the metal block. The thickness of the second area at the second side corresponds to the thickness of the central area. A third area is adjacent to and on an opposite side of the first area from the second area. The third area tapers from a thick section at the first side of the impeller where a thickness corresponds to the thickness of the central area, to a thin section at the second side of the impeller.
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