Apparatus for controlled supply of alumina

Details Apparatus for controlled supply of alumina Apparatus for controlled supply of alumina

C - Chemistry, Metallurgy

25

C

C25C 3/14 (2006.01)

Patent

CA 2093012

2093012 9206230 PCTABS00011 Apparatus for the controlled supply of alumina to an electrolysis tank having an electrolyte crust breaking plunger (2) includes a supply chamber (19) connected to the entry port (16) of a dose holder (10). Alumina leaving an exit port (15) of the dose holder (10) passes via an inclined wall (9) to a delivery chute (21) which directs the alumina to a hole formed in the crust by the plunger. Valve means (14) movable with the plunger (2) controls the opening of the dose holder entry and exit ports (16, 15), closing one port as it opens the other, and allowing alumina to flow through the delivery chute (21) as the plunger (2) is retracted from the crust. The plunger movement required to control the valve means is such that alumina can be fed into the tank substantially continuously without meeting interference from the plunger.

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