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

Treatment of aluminum electrolytic cell waste refractory materials

A technology for refractory materials and aluminum electrolytic cells, which is applied in the field of processing waste refractory materials in aluminum electrolytic cells, can solve problems such as pollution of waste refractory materials, and achieve the effects of eliminating hazards, being easy to industrialize, and having reliable technology.

Active Publication Date: 2009-08-05
中铝郑州有色金属研究院有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the deficiencies of the above prior art in the treatment of waste refractory materials, and provides an aluminum alloy that can make waste refractory materials harmless and can be effectively used, effectively solve the pollution problem of waste refractory materials, and is easy to implement industrially. Treatment method of waste refractory materials in electrolyzer

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

[0017] Add 1,000 grams of waste refractory materials, 200 grams of limestone, 150 grams of fly ash, and 30 grams of sand into the sintering raw materials; mix the four materials evenly, grind them until the particle size is less than 0.5mm, and spray them into the rotary Carry out sintering in the kiln, the sintering temperature is 1250°C, and the sintering time is 30 minutes; the sintering material is cooled, mixed with 70 grams of magnesia, and made into powder less than 2mm, the powder mainly contains calcium fluoride, calcium aluminosilicate, β-oxidized Aluminum, free magnesium oxide, free silicon oxide and other components are suitable for use as powdery anti-seepage refractory materials for aluminum electrolytic cells.

Embodiment 2

[0019] Add 1,000 grams of waste refractory materials, 350 grams of limestone, 100 grams of fly ash, and 50 grams of sand into the sintering raw materials; mix the four materials evenly, grind them until the particle size is less than 0.5mm, and spray them into the rotary Carry out sintering in the kiln, the sintering temperature is 1100°C, and the sintering time is 45 minutes; the sintering material is cooled and mixed with 150 grams of magnesia to make a powder less than 2 mm, which mainly contains calcium fluoride, calcium aluminosilicate, β-oxidized Aluminum, free magnesium oxide, free silicon oxide and other components are suitable for use as powdery anti-seepage refractory materials for aluminum electrolytic cells.

Embodiment 3

[0021] Add 1,000 grams of waste refractory materials, 500 grams of limestone, 50 grams of fly ash, and 100 grams of sand into the sintering raw materials; mix the four materials evenly, grind them until the particle size is less than 0.5mm, and spray them into the rotary Carry out sintering in the kiln, the sintering temperature is 1000°C, and the sintering time is 60 minutes; the sintering material is cooled and mixed with 240 grams of magnesia to make a powder less than 2mm, which mainly contains calcium fluoride, calcium aluminosilicate, β-oxidized Aluminum, free magnesium oxide, free silicon oxide and other components are suitable for use as powdery anti-seepage refractory materials for aluminum electrolytic cells.

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

A process for reclaiming the used refractory material of aluminum electrolyzer includes such steps as crushing, mixing with sand, powdered coal ash and lime stone, grinding, spraying the powder into rotary kiln, sintering, cooling, mixing with magnesium sand, and grinding to obtain the powdered impervious refractory for the aluminum electrolyzer.

Description

technical field [0001] The invention relates to a method for processing waste refractory materials in an aluminum electrolytic cell, relating to a method for processing the refractory materials used in the cell liner which are discarded in the process of electrolytic production of metal aluminum. Background technique [0002] The waste tank lining produced in the production process of electrolytic aluminum contains a large amount of soluble fluoride and cyanide, which is directly stacked in the open air and pollutes the atmosphere, and landfills pollute the soil. Human health and cause great harm to animal and plant growth. The pollution of waste tank lining has become one of the important issues affecting the healthy, coordinated and sustainable development of the aluminum industry. [0003] Regarding the harmless treatment of waste linings of aluminum electrolytic cells, patent 200410042564.8 describes a practical process, which has been implemented industrially and achie...

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): B09B3/00C25C3/08C04B35/64
Inventor 李旺兴陈喜平赵清杰王玉罗钟生
Owner 中铝郑州有色金属研究院有限公司
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