Electrolyte supplement system in aluminium electrolysis process and method for preparing the same

US9611151B2 · kind B2 · utility

Assignee

• SHENZHEN SUNXING LIGHT ALLOYS MATERIALS CO., LTD. · CN

Inventors

• Xuemin Chen · Tangxia, CN
• Jun Yang · Tai'an City, CN
• Zhihong Li · San Jose, US
• Weiping Wu · Tangxia, CN

Key dates

• Filing date: Jan 22, 2014
• Grant date: Apr 4, 2017
• Expiry date: Jan 22, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C25C3/18
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The disclosure provides an electrolyte supplement system in an aluminum electrolysis process, which includes low-molecular-ratio cryolite, wherein the low-molecular-ratio cryolite is selected from mKF.AlF3, nNaF.AlF3 or mixture thereof, where m=1˜1.5 and n=1˜1.5. When the electrolyte supplement system provided by the disclosure is applied to the aluminum electrolytic industry, electrolytic temperature can be reduced obviously in the aluminum electrolysis process without changing the existing electrolytic process; thus, power consumption is reduced, volatilization loss of fluoride is reduced and the comprehensive cost of production is reduced.