Automatic aluminum oxide flotation system
A kind of alumina, automatic technology, applied in the field of aluminum electrolysis, to achieve the effect of preventing material blocking in the chute, increasing adsorption efficiency and reducing consumption
Pending Publication Date: 2019-03-01
河南神火煤电股份有限公司
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to reduce the consumption of fluorine salts produced by electrolytic aluminum, prevent air pollution, chute blockage, electrolytic tank furnace bottom precipitation and anode effect. In order to solve the above problems, the present invention provides an aluminum oxide automatic floating system
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[0016] as attached Figures 1 to 3 As shown, an alumina automatic flotation system includes a flue 10 and a dust collector 1, the flue 10 is connected to the dust collector 1, a flotation material box 5 is provided under the dust collector 1, and a boiling tank 5 is provided at the bottom of the flotation material box 5. bed 4, and the flotation bin 5 is connected to the fluorine-carrying bin.
[0017] Further, the flotation bin 5 is provided with a feed pipe 3 and a discharge pipe, the feed pipe 3 is connected to the dust collector 1 through the super-dense phase chute 2, and the discharge pipe is connected to the fluorine-carrying bin through the super-dense phase recovery chute 7, and the flotation One side of the bottom of the material box 5 is provided with a secondary circulation discharge port 8, and the secondary circulation discharge port 8 is connected to the flue 10 through the secondary circulation pipe 9 for secondary adsorption, better utilization of alumina, and...
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The invention provides an automatic aluminum oxide flotation system which comprises a flue and a dust remover. The flue is communicated with the dust remover, a flotation material box is arranged under the dust remover, the bottom of the flotation material box is provided with a fluidized bed, and the flotation material box is connected with a fluorine loading bin. The automatic aluminum oxide flotation system can utilize different weights of the fluorine content of aluminum oxide to make the fluorine loading aluminum oxide in a suspended state through the fluidized bed, the fluorine loading aluminum oxide having larger fluorine content is directly extracted, the aluminum oxide fully absorbs hydrogen fluoride gas, the adsorption efficiency of the hydrogen fluoride is greatly improved, theenvironmental pollution caused by the fact that harmful gas hydrogen fluoride is discharged to the air is reduced, meanwhile the fluorine loading aluminum oxide can be used for producing electrolyticaluminum in a fluoride salt way after entering an electrolytic cell. The consumption of fluoride salt is reduced, the hydrogen fluoride gas is turned from waste into wealth and is recycled in electrolytic aluminum production, the utilization value is improved, and chute plugging and bottom precipitation and anode effect of the electrolytic cell are prevented.
Description
technical field [0001] The invention relates to the technical field of aluminum electrolysis, in particular to an alumina automatic flotation system. Background technique [0002] In the aluminum electrolysis industry, a certain amount of fluoride salt needs to be added in the process of electrolytic production of aluminum. The fluoride salt can reduce the melting temperature of the electrolyte, separate carbon slag and improve the conductivity of the electrolyte. During the electrolysis process, the consumption of aluminum fluoride salt per ton is about 20 kg, but fluoride salt is volatile in high temperature environment, resulting in a loss of about 6.5 kg of fluorine, accounting for about 32% of the consumption of aluminum fluoride salt per ton. However, fluorine exists in the form of harmful gas hydrogen fluoride, which not only increases the consumption of fluoride salt, but also pollutes the environment. The traditional hydrogen fluoride treatment process is suctioned...
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IPC IPC(8): C25C3/18C25C3/22
CPCC25C3/18C25C3/22
Inventor 李国林李修钦郭剑李仲远侯红梅张坤王小恩李强周震源郑华伟陈艳丽刘森孟伟
Owner 河南神火煤电股份有限公司