A kind of structure and preparation method of prebaked continuous independently reinforced carbon bowl anode carbon block

Abstract

The invention discloses a pre-baked continuous and independent reinforced carbon bowl anode carbon block structure and a preparation method thereof. The pre-baked continuous and independent reinforcedcarbon bowl anode carbon block structure comprises a carbon block body. The upper end of the carbon block body is provided with carbon bowl assembly connecting pits. Reinforced carbon bowl assembliesare arranged in the carbon bowl assembly connecting pits. A carbon bowl is arranged on each reinforced carbon bowl assembly. A mechanical steel jaw ring groove is formed in the reinforced carbon bowlassembly of the bottom of each carbon bowl. Through the pre-baked continuous and independent reinforced carbon bowl anode carbon block structure, no anode scraps are produced; the utilization rate ofanode carbon blocks is increased from traditional 70-80% to approximate 100%, and the production cost of electrolytic aluminum can be reduced. The working conditions of an electrolytic bath are stable, electrical loss is low relatively, and thermal energy is saved. When molten aluminum casting and mechanical composite steel jaws invented by the inventor is matched with anode carbon blocks (the patent number: 201710088066.4) of the corresponding structure for use, it can be ensured that a carbon bowl assembly is free of cracks and fissures and molten aluminum leakage occurs to the carbon bowlwhen operating on the electrolytic bath. Meanwhile, the mechanical strength of the connecting ring groove of the mechanical steel jaws at the bottom of the carbon bowl is improved, and connection is more firm and more reliable.

Description

technical field [0001] The invention relates to a prebaked continuous independently reinforced carbon bowl anode carbon block structure and a preparation method, in particular to the technical field of anode carbon blocks. Background technique [0002] In the modern electrolytic aluminum industry, prebaked anodes are used to produce electrolytic aluminum. The prebaked anode is generally a cuboid with a stable geometric shape. It uses stone tar and pitch coke as the aggregate and coal tar pitch as the binder. It has different sizes according to the size of the electrolytic cell current and the process. Its current density Generally in the range of 0.68-0.9A / cm2, the service life of each anode carbon block is generally about 30 days. In the production process of electrolytic aluminum, the carbon anode and the oxygen decomposed by alumina electrolysis continue to react at high temperature, releasing carbon dioxide gas, which is continuously consumed and needs to be replaced re...

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Problems solved by technology

[0011] 1. The process of replacing the old anode carbon block is complicated, and a large number of anode residues are generated;

[0012] 2. When replacing a new anode carbon block, a large amount of heat on the anode butt is also taken away and cannot be used. When a new anode is inserted into the electrolytic cell, it is necessary to reheat the anode carbon block and steel claw to a certain temperature before it can be normal Conducting electricity, resulting in waste of heat and reducing the efficiency of electrolysis;

[0013] 3. During the electrolytic combustion process of the existing anode carbon block, it is easy to lose blocks and cracks. It is used in conjunction with the aluminum water casting-mechanical composite steel claw and the corresponding structure of the anode carbon block (patent number 201710088066.4) invented by the inventor. When the aluminum water leaks, it will definitely cause aluminum water leakage, causing the carbon bowl and steel claws leaking aluminum water to be non-conductive, and the electrolyte will also cause a power outage after being immersed in the transverse crack.

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