Method of directly preparing aluminium cerium internediate alloy using fused salt elactrolysis method

A technology for master alloy and molten salt electrolysis, which is applied in the field of direct preparation of aluminum-cerium master alloy by molten salt electrolysis, can solve the problems of high cost, inconvenient use, low efficiency of electrolytic cells, etc., and achieves simple preparation method, stable production and use. handy effect

Inactive Publication Date: 2004-12-22
包头铝业股份有限公司
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Problems solved by technology

[0002] At present, the domestic production of aluminum-cerium master alloys mainly uses mixed rare earths to prepare low-content master alloys, and directly adds rare earth metals to the aluminum liquid to prepare alloy aluminum liquid. The composition of this method is not easy to control. It is not suitable to guarantee; there is also the direct preparation of mixed rare earth aluminum alloys by molten salt electrolysis, but the rare earth content can only be controlled at about 5%, and the production of this method will easily lead to changes in the technical conditions of the aluminum electrolytic cell, resulting in low efficiency of the electrolytic cell, and the rare earth Rare earth alloy products with high content requirements are inconvenient to use and cause high costs

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Embodiment

[0015] Our company adds pure cerium oxide rare earth to the electrolytic cell to produce aluminum-cerium intermediate alloy. First, set the voltage of the electrolytic cell to 4.5-4.6V, control the cell temperature at 950-975°C, adjust the electrolyte level to 16-18cm, and adjust the aluminum level 32-35cm, clean the bottom of the furnace, control the voltage drop at the bottom of the furnace below 500mV, adjust the electrolyte composition, and control the molecular ratio between 2.6-2.7, so that 75Kg of rare earth cerium oxide is directly added to the shell surface every day, and the rare earth content after one week It reaches 3-4%, and the rare earth content reaches more than 10% within a month. During this period: the electrolyte composition is poor, the carbon slag is not easy to separate and is sticky, the electrolyte shrinks, there are more dilute deposits in the tank but the bottom of the furnace is not long; in order to improve the electrolyte composition and the opera...

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Abstract

A proces for directly preparing the Al-Ce interalloy by fused salt electrolyzing method features that the pure cerium oxide is directly added to the electrolyzer and the chemical reaction in fused salt electrolyzing procedure makes the Ce directly come in Al liquid to obtain the RE alloy containing Ce (10%).

Description

1. Technical field: [0001] The invention belongs to the field of preparation methods of aluminum metal electrolysis, and in particular relates to a method for directly preparing aluminum-cerium master alloys by molten salt electrolysis. 2. Background technology: [0002] At present, the domestic production of aluminum-cerium master alloys mainly uses mixed rare earths to prepare low-content master alloys, and directly adds rare earth metals to the aluminum liquid to prepare alloy aluminum liquid. The composition of this method is not easy to control. It is not suitable to guarantee; there is also the direct preparation of mixed rare earth aluminum alloys by molten salt electrolysis, but the rare earth content can only be controlled at about 5%, and the production of this method will easily lead to changes in the technical conditions of the aluminum electrolytic cell, resulting in low efficiency of the electrolytic cell, and the rare earth Rare earth alloy products with high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/36
Inventor 王云利高国平王在运李志强刘二林程业萱孙宏杰李丽君贾佼成鲍永强王进才周连弟杜洪波柴挨俊许鹏飞李伟明
Owner 包头铝业股份有限公司
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