Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – To form particulate product
Patent
1982-01-26
1983-09-20
Anderson, Philip E.
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
To form particulate product
264332, 425 6, 425436R, 425471, B28B 154
Patent
active
044055455
ABSTRACT:
A method and apparatus is disclosed for rapidly solidifying and cooling molten metal oxides, by continuous casting, which according to the invention, comprises: feeding the molten metal oxides into the convergent space formed between two cylinders mounted for rotation about horizontal axes and rotated in opposite directions, i.e., counter-rotating, at a substantially equal peripheral speed, the distance between their axes being equal to the sum of the radius of each cylinder plus at least about one millimeter; cooling the walls of the cylinders to enable solidification of the molten material; controlling the rotary speed of the cylinders so that the molten metal oxide is not completely solidified until it reaches a point beyond a plane passing through the axes of rotation of the cylinders, and retrieving a solidified metal oxide product from the divergent space formed between the cylinders. The method is particularly suited to the production of fine grain abrasives of a corundum or courndum-zirconia base.
REFERENCES:
patent: 2773753 (1956-12-01), Stengel et al.
patent: 3646713 (1972-03-01), Marshall et al.
patent: 3993119 (1976-11-01), Scott
Demange Michel
Septier Louis
Anderson Philip E.
Societe Francaise d'Electrometallurgie "Sofrem"
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