Flotation of Alumina on the Surface of the Electrolyte in an Aluminum Electrolysis Cell

被引：1

作者：

Kaszas, Csilla ^{[1
]}

Kiss, Laszlo I. ^{[1
]}

Poncsak, Sandor ^{[1
]}

Guerard, Sebastien ^{[2
]}

Alarie, Jonathan ^{[1
]}

Roger, Thomas ^{[1
]}

机构：

[1] Univ Quebec Chicoutimi, 555 Blvd Univ, Chicoutimi, PQ G7H 2B1, Canada

[2] Rio Tinto CRDA, 1955 Blvd Mellon, Jonquiere, PQ G7S 4K8, Canada

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE | 2020年 / 51卷 / 04期

基金：

加拿大自然科学与工程研究理事会;

关键词：

CRYOLITE; TENSION;

D O I：

10.1007/s11663-020-01836-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A model of flotation was developed and applied to alumina in the aluminum electrolysis cell. The conditions of flotation for alumina on the cryolitic bath surface were determined for disc and sphere geometries. The contact angle between alumina and cryolitic bath, which had not been found in the literature, was measured and it was found to be around 30 deg. Experiments with compressed alumina discs on the cryolitic bath surface were conducted, and the results were compared to the model. The experiments showed how impurities on the bath surface influence the flotation; and how a slight asymmetry in the system may accelerate sinking.

引用

页码：1824 / 1835

页数：12

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