Patent ID: 11028494

Abstract:
The invention relates to nonferrous metallurgy, in particular to the electrolytic production of aluminum, namely to the devices for feeding electrolytic cells, and can be used to feed alumina, aluminum fluoride, crushed electrolyte to electrolytic cells for producing aluminum. A device for feeding an electrolytic cell for producing aluminum comprises a hopper, a metering chamber with loading windows located around a perimeter of an upper part of the metering chamber above the hopper base, a valve stem with a pneumatic actuator, an upper locking element rigidly fixed to the valve stem at the upper part of the metering chamber, wherein the upper locking element is positioned between upper and lower edges of loading windows, when the stem is in an upper position, and a lower locking element is mounted on an end of the valve stem. According to a first variant of the present invention, the device is characterized in that at least one metering shuttle valve is provided in the upper part of the metering chamber above the upper locking element, and the metering shuttle valve is rigidly fixed to the valve stem so that its upper end in an initial position of the valve stem is located below the upper edge of the loading windows. According to a second variant of the present invention, the device is characterized in that, inside the hopper above the upper locking element, the device comprises at least one circular rib fixed into the upper part of the metering chamber, at least one rib and at least one baffle plate are fixed to the hopper walls so that the material can pass through gaps between plate ends and the walls of the hopper and the metering chamber. The invention provides for the better stability of feeding and may improve processing performance of an electrolytic cell.