Title of Invention

"A FEEDING APPARATUS FOR A LARGE AMPERAGE PREBAKED ANODE ALUMINUM ELECTROLYTIC CELL"

Abstract The present invention discloses a superstructure configuration of large amperage prebaked anode aluminum electrolytic cell, comprising a pipeline network for controlling the compressed air for crust breaking and feeding, crust breaking device, feeding device, alumina hopper, and aluminium fluoride hopper, characterized in that each feeding point corresponds to the crust breaking device and the feeding device, in that the pipeline network for controlling the compressed air for crust breaking and feeding is respectively connected to the crust breaking device and the feeding device, and in that the feeding device is mounted on the alumina hopper and the aluminium fluoride hopper. The present invention changes the original configuration having four feeding points into a configuration having five feeding points such that the superstructure of the electrolytic cell is more compactly designed, space is more reasonably utilized, wear of wearing parts is reduced, cost is cut, and meanwhile stability of electrolytic production is improved.
Full Text Technical Field
The present invention relates to a superstructure of large amperage prebaked anode aluminum electrolytic cell.
Background Art
At present, the structural dimensions of large amperage prebaked anode aluminum electrolytic cells of above 280 kA in the art have been constantly increasing with the increase of amperage.
As the length of the electrolytic cell increases, the available space of the superstructure becomes larger. So it is an objective to pursue a large amperage electrolytic cell that allows for stable electrolytic production and compact, reasonable superstructure. The superstructure of the electrolytic cells above 200kA (including 230kA) popularly used to date normally comprises three alumina hoppers, one aluminium fluoride hopper and four alumina crust breaking and feeding points, among these four points, one is also used as feeding point of aluminium fluoride. However, with the continuous new developments of high amperage prebaked anode aluminum electrolytic cells above 2$0kA, the persistent application of the above arrangement will surely bring about the following unfavorable factors;
1. As the length of the electrolytic cell constantly increases, the alumina hopper on the electrolytic cell cannot be made very large due to the limitation of angle of repose of alumina in order to avoid waste of effective space of the superstructure of the electrolytic cell
2. Due to limitation of the superstructure of the electrolytic cell, only one aluminium

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fluoride hopper can be used, which causes instability of electrolytic production. 3. As both the cell size and the production capacity increases, if the above arrangement is still used, the crust breaking and feeding interval will be shortened and the cylinder will act frequently, which causes quick wear of components such as the cylinder and the tapping hammer, thereby increasing the production cost.
Summary of the Invention
An object of the present utility model is to provide a novel configuration of superstructure of an electrolytic cell to replace the original configuration so that the configuration of said superstructure is made compacter, space is more reasonably utilized and meanwhile stability of electrolytic production is facilitated. The present invention is constituted as follows: it comprises a pipeline network (1) for controlling the compressed air for crust breaking and feeding, crust breaking device (2), feeding device (3), alumina hopper (4), and an aluminium fluoride hopper (5), wherein each feeding point corresponds to the cmst breaking device (2) and the feeding device (3), the pipeline network (1) for controlling the compressed air for crust breaking and feeding is respectively connected to the crust breaking device (2) and the feeding device (3), and wherein the feeding device (3) is mounted on the alumina hopper (4) and the aluminium fluoride hopper (5).
By employing the above technical solution, the present invention changes the configuration having the original four feeding points into a configuration having five feeding points such that the superstructure of the electrolytic cell is more compactly designed, space is more reasonably utili2ed, wear of wearing parts is reduced, cost is cut, and meanwhile stability of electrolytic production is improved.
Brief Introduction of the Sketches
Fig.l is a schematic view of the structure of the present invention.
Mode of Carrying out the Present Invention
An embodiment of the present invention takes a 320kA electrolytic cell as an example,
wherein 40 anodes are arranged in two rows with 20 anodes in each, and five feeding

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points are equally arranged where the central seam of the electrolytic cell intersects the anode longitudinal seam, and wherein the two aluminium fluoride feeding points are symmetrically arranged on both sides of the central point. The pipeline network (1) for controlling the compressed air for crust breaking and feeding is respectively connected to the crust breaking device (2) and the feeding device (3), each feeding point corresponds to the crust breaking device (2) and the feeding device (3)7 and the feeding device (3) is mounted on the alumina hopper (4) and the aluminium fluoride hopper (5).





Claims
1. A superstructure configuration of a large amperage prebaked anode aluminum electrolytic cell, comprising a pipeline network (1) for controlling the compressed air for crust breaking and feeding, crust breaking device (2), feeding device (3)7 an alumina hopper (4) and aluminium fluoride hopper (5), characterized in that each feeding point corresponds to the crust breaking device (2) and the feeding device (3), in that the pipeline network (1) for controlling the compressed air for crust breaking and feeding is respectively connected to the crust breaking device (2) and the feeding device (3), and in that the feeding device (3) is mounted on the alumina hopper (4) and the aluminium fluoride hopper (5),


Documents:

0877-che-2005-abstract.pdf

0877-che-2005-claims.pdf

0877-che-2005-correspondnece-others.pdf

0877-che-2005-description(complete).pdf

0877-che-2005-drawings.pdf

0877-che-2005-form 1.pdf

0877-che-2005-form 3.pdf

0877-che-2005-form 5.pdf

0877-che-2005-verification.pdf

877-che-2005 abstract.pdf

877-che-2005 claims.pdf

877-che-2005 correspondence others-23-06-2009.pdf

877-CHE-2005 CORRESPONDENCE-OTHERS 07-12-2009.pdf

877-che-2005 correspondene others.pdf

877-che-2005 description(complete).pdf

877-che-2005 drawings.pdf

877-che-2005 form-1.pdf

877-che-2005 form-26.pdf

877-che-2005 form-3.pdf

877-che-2005 others.pdf

877-che-2005 petition.pdf


Patent Number 238395
Indian Patent Application Number 877/CHE/2005
PG Journal Number 7/2010
Publication Date 12-Feb-2010
Grant Date 03-Feb-2010
Date of Filing 05-Jul-2005
Name of Patentee CHINA ALUMINUM INTERNATIONAL ENGINEERING CORPORATION LIMITED
Applicant Address B-15/F, TONGTAI MANSION, 33 JINRONG STREET, XICHENG DISTRICT, BEIJING 100032, CHINA
Inventors:
# Inventor's Name Inventor's Address
1 LIU, JIAN 208 BEIJING ROAD, GUIYANG CITY, GUIZHOU PROVINCE 550004, CHINA
PCT International Classification Number C25D 3/66
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 200420060186.1 2004-07-06 China