Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Electrolysis cell and cathode with irregular surface profiling

An electrolytic cell and cathode technology, applied in the field of electrolytic cells, can solve the problems that the service life cannot be extended, reduce the specific energy consumption of the electrolytic cell, and achieve the effect of less fluctuations forming potential distribution

Inactive Publication Date: 2014-03-12
SGL CARBON SE
View PDF8 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in these electrolysers, relatively pronounced fluctuations are formed in the liquid aluminum layer, thus reducing the specific energy consumption of the electrolyser, and the service life cannot be extended

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electrolysis cell and cathode with irregular surface profiling
  • Electrolysis cell and cathode with irregular surface profiling
  • Electrolysis cell and cathode with irregular surface profiling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0185] figure 1 Shown is an electrolytic cell 10 for aluminum production, said electrolytic cell comprising a cathode 12, a layer 14 of liquid aluminum on top of said cathode 12, a layer 16 of melt on top of said layer of liquid aluminum, and an anode 18 located above the melt layer 16 . The liquid aluminum layer 14 and the melt layer merge into each other at the boundary surface 15 .

[0186] The cathode 12 is composed of a plurality of elongated cathode blocks, which extend along the horizontal direction y of the electrolytic cell 10, are arranged side by side along the longitudinal direction x of the electrolytic cell 10, and are connected to each other by a tamping connector not shown in the figure . Inserted into the underside of each cathode block is a busbar 20 which passes through the cathode block in its longitudinal direction y and makes electrical contact with the cathode block.

[0187] The busbars 20 are brought together by current leads 22 , which are geometri...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to an electrolysis cell, in particular for the production of aluminium, comprising a cathode, a layer of liquid aluminium on the top side of the cathode, a melt layer on top of the layer of liquid aluminium, and an anode above the melt layer, wherein the cathode has, on the top side thereof, a surface profiling formed from two or more elevations, wherein the surface profiling of the cathode is configured and arranged such that in each case one elevation is provided at at least two of the twenty points on the surface of the top side of the cathode which are arranged in each case vertically below those regions of the boundary between the layer of liquid aluminium and the melt layer at which the peaks with the twenty highest maximum values are present in the reference wave forming potential distribution at the boundary, wherein a reference wave forming potential is defined as the wave forming potential which is present at a point in the boundary between the layer of liquid aluminium and the melt layer during the operation of the electrolysis cell with, instead of the cathode with surface profiling, a reference cathode without surface profiling but of otherwise identical configuration to the cathode with surface profiling.

Description

technical field [0001] The invention relates to an electrolytic cell, especially for the production of aluminum, and to a cathode suitable for the electrolytic cell. Background technique [0002] Electrolyzers are used, for example, for the electrolytic production of aluminum, which is usually produced industrially using the Hall-Herut process. The Hall-Heruth process involves the electrolysis of a melt consisting of alumina and cryolite. Cryolite, Na 3 [AlF 6 ], used to lower the melting point of pure alumina, 2,045°C, to a mixture containing cryolite, alumina, and additives such as aluminum fluoride and calcium fluoride, to a melting point of about 950°C. [0003] The electrolytic cell used in this process comprises a cathode core made up of a number of cathode blocks arranged adjacent to each other to form the cathode. In order for the electrolyzer to withstand the thermal and chemical conditions prevailing during operation, the cathode is usually constructed of carbo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C25C3/08C25B9/17
CPCC25C3/08
Inventor 托马斯·弗罗梅尔特弗兰克·希尔特曼
Owner SGL CARBON SE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com