C - Chemistry – Metallurgy – 25 – C
Patent
C - Chemistry, Metallurgy
25
C
204/203, 222/31
C25C 3/14 (2006.01) B01J 8/00 (2006.01) B65G 53/22 (2006.01) B65G 65/36 (2006.01)
Patent
CA 1252438
A B S T R A C T Apparatus for feeding particulate material, particularly alumina to an aluminium reduction cell, comprises a passage having an upstream section 10 provided with baffles 18, 20, leading to a chicane 14, 16 and then to a downstream section 12. A gas pipe 22 feeds low-pressure gas to a slot 26 through which a flow of gas can be started or stopped, 50 as to start or stop the passage of the material through the chicane. The apparatus provides accurate control of the amount of feed by means of a timer, the feed being at a controlable slow rate.
490204
Alcan International Limited
Fetherstonhaugh & Co.
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