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

Self-flow castable for filling back seam of side wall of aluminium electrolytic bath

A technology for aluminum electrolytic cells and side walls, applied in the field of monolithic refractory materials-self-flowing castables, which can solve the problems of low thermal conductivity of alumina powder, affecting the formation of heat dissipation furnace sides, affecting the service life of aluminum electrolytic cells, etc., and reducing labor The effect of improving strength, improving service life and increasing masonry efficiency

Active Publication Date: 2013-04-24
REFRACTORY MATERIAL OF SINOSTEEL CORP
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the small thermal conductivity of alumina powder, there will be a heat barrier during side heat dissipation, which will affect heat dissipation and the formation of the furnace side. The formation period of the furnace side is about 90 days, so that the side wall material is eroded by aluminum liquid and electrolyte for a long time, and Alumina powder cannot combine the side wall material with the tank shell, and cannot guarantee that the side wall material will leak aluminum due to the buoyancy of the aluminum liquid and electrolyte, which will affect the service life of the aluminum electrolytic cell

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] raw material name

Embodiment 2

[0015] raw material name

[0016] calcium aluminate cement

Embodiment 1 and 2

[0017] The technological process of embodiment 1 and 2

[0018] 1. Calcium aluminate cement, silicon micropowder, and alumina micropowder are weighed with an electronic scale according to the proportions of the above examples, and then mixed with a double-screw mixer for 6-8 minutes;

[0019] 2. Silicon carbide and high aluminum materials are weighed with an electronic scale according to the proportions of the above examples, and then mixed evenly with a double-screw mixer;

[0020] 3. Sodium tripolyphosphate is weighed according to the ratio of the above examples with an electronic scale;

[0021] 4. Put all the materials obtained in the above 1-3 into a strong mixer and mix for 10 minutes to achieve uniformity;

[0022] 5. Use an automatic packaging machine for packaging and sealing (one bag per 25 kg).

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

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a self-flow castable capable of filling a seam between a shell and a side wall brick of an electrolytic bath, is designed special for an aluminium electrolytic bath and mainly comprises the following components: a carborundum material, a high alumina material, silica micropowderl, aluminium oxide powder and a calcium aluminate cement. The carborundum raw material used by the self-flow castable has high purity, high SiC content, relatively good bath electrolyte erosion resistance and compression strength; high heat conduction coefficients can eliminate a thermal barrierbetween the bath shell and the side wall brick and are favourable for promoting the forming of a side wall brick furnace upper; and good fluidity can guarantee that the castable uniformly fill the seam. Through the features, the self-flow castable can effectively prolong the service lives of the aluminium electrolytic bath and the side wall brick, is not limited by a construction space in castingconstruction, can quickly cast and is not fired at a high temperature in a production process. Therefore, the self-flow castable is a high-efficiency, energy-saving and environment-friendly refractory material.

Description

technical field [0001] The invention relates to a high-grade inorganic non-metallic material for filling the back seam of the side wall of an aluminum electrolytic cell, in particular to an amorphous refractory material mainly composed of silicon carbide material, high aluminum material, silicon micropowder, aluminum micropowder and calcium aluminate cement - Self-flowing castables. technical background [0002] As the main equipment of aluminum electrolysis, the service life of aluminum electrolytic cell is directly related to the development of the whole electrolytic aluminum industry. In China, silicon nitride combined with silicon carbide bricks are generally used as the side wall material of the aluminum electrolytic cell, and alumina powder is used as the back seam filling material of the side wall. In the side silicon carbide brick masonry, the traditional method is: (1) The vertical seam of the side block of the new tank is made of special SiC slurry for the aluminu...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C25C3/08C04B7/32
Inventor 张建芳张永谦张玉涛翟皖予李翠霞王光强
Owner REFRACTORY MATERIAL OF SINOSTEEL CORP
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