Analysis on the die compaction of anode paste material used in aluminum production plants

Aryanpour, G.; Alamdari, Houshang; Azari, Kamran; Ziegler, Donald; Picard, Donald; Fafard, Mario

doi:10.1016/j.powtec.2014.01.033

Cited by 4 publications

(1 citation statement)

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“…It is mainly composed of calcined petroleum coke, coal tar pitch and regenerated carbon materials (Bhattacharyay et al, 2017). In the process of electrolytic aluminum production, part of the carbon anode falls off and enters the electrolyte to form anode carbon residue, and the accumulation of carbon residue will affect the production of electrolytic aluminum (Jin-sheng and Qing-chun, 2017;Zhi-qian et al, 2019), and the generation of carbon residue is related to the quality of anode (Aryanpour et al, 2014;Chevarin et al, 2015). Because in the process of aluminum electrolysis, carbon anode participated in the electrolysis process and was consumed, the production of aluminum at the same time to consume a large amount of carbon, producing a large amounts of CO 2 (Huang et al, 2018) are produced resulting in voltage increases (Haupin, 1971) and current efficiency losses (Einarsrud, 2010).…”

Section: Introductionmentioning

confidence: 99%

Occurrence State of Carbon and Electrolyte in Anode Carbon Residue From Electrolytic Aluminum

Mao

Zhang

2021

Front. Mater.

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Anode carbon residue is produced in the production of electrolytic aluminum. Its properties need to be studied for secondary utilization. In this paper, mineralogy of anode carbon residue from an electrolytic aluminum plant in Guizhou was studied. The anode residue chemical composition, structure, mineral composition, occurrence state of main elements, etc, was investigated. The results show that: Anode carbon residue is mainly composed of 14 minerals such as cryolite, cryolithionite, elpasolite and graphite. Among them, the opaque minerals are mainly graphite and the transparent minerals are mainly cryolite. Carbon in the form of independent mineral occurrence in graphite; fluoride in the form of independent mineral occurrence in cryolite, cryolithionite, elpasolite and fluorite; aluminum in the form of independent mineral occurrence in cryolite, cryolithionite, elpasolite, aluminium oxide and magnesium aluminate; sodium in the form of independent mineral occurrence in cryolite, cryolithionite, elpasolite. The mineralogical characteristics and occurrence state of carbon and electrolyte were studied, which provided a basis for the separation and recovery of carbon and electrolyte in anode carbon residue.

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