Aluminum oxide feeding system and method

A technology of alumina and blanking, which is applied in the field of aluminum electrolysis, can solve the problems of alumina dispersion and dissolution, and achieve the effects of reducing the generation of precipitation, uniform distribution, and delaying the speed of blanking

Active Publication Date: 2019-07-23
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem solved by the present invention is to provide an aluminum electrolytic cell with good stability, stable feeding speed, uniform dispersion of aluminum o

Method used

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  • Aluminum oxide feeding system and method
  • Aluminum oxide feeding system and method
  • Aluminum oxide feeding system and method

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Embodiment

[0038] see figure 1 , the alumina blanking system in the illustration is a specific embodiment of the present invention, and specifically includes two parts: a pulverizer 3 and a feeder 9. The pulverizer 3 and the feeder 9 are vertically arranged up and down. The pulverizer 3 The bottom of the bottom and the top of the feeder 9 are butt-connected, wherein the feeding port 1 of the entire feeding system is located at the top of the pulverizer 3, the feeding port 14 is located at the bottom of the feeding device 9, and the entire feeding system is arranged in the electrolytic cell 13 Above, the feeding port 14 is set at the feeding position of the electrolytic cell 13 , and the alumina powder processed by the feeding system is added to the interior of the electrolytic cell 13 through the feeding port 14 .

[0039]Wherein, the interior of the pulverizer 3 is provided with a rotating guide rod 2, and the rotating guide rod 2 is mounted on the top of the pulverizer 3, and is connec...

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Abstract

The invention discloses an aluminum oxide feeding system and an aluminum oxide feeding method. The aluminum oxide feeding system comprises a pulverizing machine and a feeding machine, wherein a feed port is formed in the upper portion of the pulverizing machine, a rotary guide pole is arranged in the pulverizing machine, pulverizing blades for stirring and pulverizing aluminum oxide powder insideare arranged on the rotary guide pole, the bottom of the pulverizing machine abuts against and communicates with the feeding machine, a hierarchical diverter which extends a dropping route of the aluminum oxide powder in the feeding device is arranged in the feeding device, a feeding port which enables the aluminum oxide to enter an electrolytic bath is formed in the end point of the powder routeof the hierarchical diverter, and the interior of the feeding machine is connected in series with a gas collection tube of the electrolytic bath through an air pipe. The aluminum oxide feeding systemand method can obviously improve dispersion and dissolution speed of the aluminum oxide, achieve uniform concentration distribution of the aluminum oxide, enable concentration of the aluminum oxide inthe electrolytic bath to fluctuate stably, reduce generation of precipitates, and are high in current efficiency, low in energy consumption, and especially suitable for acid feeding of the aluminum oxide.

Description

technical field [0001] The invention belongs to aluminum electrolysis technology, and in particular relates to an alumina blanking system and a blanking method thereof. Background technique [0002] Hall-Héroult electrolysis has been the only method for industrial aluminum smelting. As the main raw material of the aluminum electrolytic cell melt, the dispersion and dissolution of alumina in the electrolyte is of great significance for industrial production. For electrolytic cells with poor alumina dissolution and transport effects, not only will the anode effect be induced due to the local alumina concentration being too low, but also the alumina cannot be dissolved in time due to the local concentration being too high, resulting in local precipitation and increased The horizontal current of the aluminum liquid affects the stability of the electrolysis process, which in turn increases the energy consumption and reduces the current efficiency. In addition, the diffusion and...

Claims

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Application Information

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IPC IPC(8): C25C3/14
CPCC25C3/14
Inventor 张红亮于心岩李劼王棋钰国辉李家琦孙珂娜王佳成
Owner CENT SOUTH UNIV
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