Creep Deformation of Carbon-Based Cathode Materials for Low-Temperature Aluminum Electrolysis

Wang, Wei; Chen, Weijie; Gu, Wanduo

doi:10.1007/s11015-017-0555-0

Cited by 6 publications

(2 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a result, during the dust collecting machines (PIP) operation, up to 420 tons per month of alumina-containing waste that are unsuitable for recycling in the electrolysis process due to substantial contamination with salts of iron and silicon is formed. It should be taken into account that alumina is supplied in addition to the Achinsk alumina plant from Kazakhstan, Guinea, Australia and Italy, which significantly reduces the electrolysis process economic parameters [5,6].…”

Section: Introductionmentioning

confidence: 99%

On the Use of Photometric Separation for the Processing of Techno-Genic Raw Materials

Бурдонов

2021

SSP

View full text Add to dashboard Cite

This work presents studies on the material composition and physico-mechanical characteristics of an alumina-containing estimate formed during the production of aluminum on electrolyzers with self-baking anodes during technological operations. The material is a mixture of fine powder 2.5 mm in size (62.78% on average mass) with the presence of pieces of material ranging in size from 0.5 to 6 cm (average 20.26% by weight). The samples contain pieces of hardened aluminum with sizes from 5 to 20 mm (16.96%). The largest content in the sample has the fineness classes-0.315 + 0.16 mm in the volume of 29.85% and the largest class +2.5 mm-37.22%. B It was established that aluminum is concentrated in the fractions-0.315 + 0.16 mm (45.7%) and 0.16 + 0 mm (48.8%), silicon in the fraction-0.63 + 0.315 mm (1.91%), iron at-1.25 + 0.63 mm (0.601%) and-0.63 + 0.315 mm (0.62%). The material consists of cryolite (Na3AlF6), chiolite (Al3F14Na5), quartz, feldspar, carbonaceous matter and the technogenic phase of the composition (NaF) 1.5CaF2 AlF3. The material is characterized as non-abrasive (working index Ai - 0.0184) and very soft in relation to impact crushing (working index CWi - 3.64), the working index of ball grinding Bond (BWi - 6.47) characterizes a very low resistance to ball grinding. The implementation of the crushing operation of an alumina-containing estimate will allow the use of dry cascade-gravity and centrifugal classification to separate impurities in the form of SiO2, and Fe2O3 for the use of alumina-containing material in primary aluminum technology. On the basis of laboratory tests, it is established that alumina-containing raw materials can be separated and photometric and gravitational separation methods can be used. A mathematical model of the motion of particles of primary and prepared alumina-containing raw materials in a cascade-gravity classifier was developed. The criteria and factors characterizing the alumina-containing material, as well as influencing and determining the maximum material enrichment, are established.

show abstract

Section: Introductionmentioning

confidence: 99%

On the Use of Photometric Separation for the Processing of Techno-Genic Raw Materials

Бурдонов

2021

SSP

View full text Add to dashboard Cite

show abstract

“…Alumina used in the electrolysis process and partially transferred to estimates is supplied to aluminum plants in Russia, in particular PJSC RUSAL Bratsk, not only from Russian producers, for example, from RUSAL Achinsk JSC (Achinsk Alumina Refinery), but also from Kazakhstan, Guinea, Australia and Italy, which leads to a significant increase in the cost of production of aluminum [9][10].…”

Section: Introductionmentioning

confidence: 99%

Features of metallurgy waste mainly processing with account for raw material contrast

Бурдонов¹,

Barakhtenko²,

Prokhorov

et al. 2020

E3S Web Conf.

View full text Add to dashboard Cite

This work presents research studies of alumina-containing estimates formed during the production of aluminum on electrolyzers with self-burning anodes during technological operations at PJSC RUSAL Bratsk. Material from the territory of the electrolysis workshop, with a mark of ± 0, is a mixture of finely dispersed powder, 2.5 mm in size (on average 62.78% by weight) with pieces of material from 0.5 to 6 cm in size. , 26% by weight). As a result of the work, the particle size and chemical-metallurgical properties of an alumina-containing estimate were studied. During the research, the content of valuable components and impurities in the sample of various classes was determined. In the process of mineralogical analysis, two phases were identified in the products: dark, black-gray and light, grayish-white. It is proved that these phases have significant differences in the chemical composition of the feed. Spectroscopic studies showed significant differences in the colorimetric characteristics of the raw materials, which is a fundamental factor for the use of photometric separation. Based on preliminary studies on the separation of alumina-containing estimates by photometric separation, the fundamental possibility of purifying contaminated material from technological impurities has been established.

show abstract

High Temperature Creep Behaviour of Carbon-Based Cathode Material for Aluminum Electrolysis

Wang

Sun

2020

The Minerals, Metals &Amp; Materials Series

View full text Add to dashboard Cite

Creep Deformation of Carbon-Based Cathode Materials for Low-Temperature Aluminum Electrolysis

Cited by 6 publications

References 20 publications

On the Use of Photometric Separation for the Processing of Techno-Genic Raw Materials

On the Use of Photometric Separation for the Processing of Techno-Genic Raw Materials

Features of metallurgy waste mainly processing with account for raw material contrast

High Temperature Creep Behaviour of Carbon-Based Cathode Material for Aluminum Electrolysis

Contact Info

Product

Resources

About