Anti-oxidizing paint for electrolytic aluminum anode carbon blocks and preparation method thereof

An anti-oxidation coating and electrolytic aluminum anode technology, applied in the field of electrolysis, can solve the problems of high production cost, limited physical and chemical state of raw materials, etc., and achieve the effects of low production cost, cheap and easy-to-buy materials, and simple construction.

Inactive Publication Date: 2012-04-25
翟相文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this formula, the types of raw materials are simple, but there are certain restrictions on the physical and chemical states of raw materials, and the production cost is still relatively high

Method used

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  • Anti-oxidizing paint for electrolytic aluminum anode carbon blocks and preparation method thereof
  • Anti-oxidizing paint for electrolytic aluminum anode carbon blocks and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The electrolytic aluminum anode carbon block anti-oxidation coating is composed of the following raw materials in weight percentage: 35% of borax or boric acid, 15% of kaolin, 30% of industrial phosphoric acid, 5% of industrial aluminum sulfate, and 15% of water. Described borax or boric acid is a first-grade product, and Al in kaolin 2 o 3 ≥35%, Fe 2 o 3 ≤1%, H in industrial phosphoric acid 3 PO 4 >85%, Al in industrial aluminum sulfate 2 o 3 ≥15%, Fe≤0.03%.

[0014] The preparation method is as follows: put 35% of borax or boric acid, 15% of kaolin and 5% of industrial aluminum sulfate into the wheel mill; mix 30-35% of industrial phosphoric acid and 10-15% of water , take 1 / 3 of the amount and put it into the wheel mill, wet mix it evenly and release the material, after aging for 24 hours, then add the aged slurry and the mixture of the remaining 2 / 3 of the industrial phosphoric acid and water into the ball mill at one time Within, grind for 2 hours and relea...

Embodiment 2～5

[0016] See Table 1 for the raw material proportions of the anti-oxidation coatings for electrolytic aluminum anode carbon blocks described in Examples 2-5.

[0017] Raw material ratio (weight percent, %) of electrolytic aluminum anode carbon block anti-oxidation coating in the embodiment 2~5 of table 1

[0018] Example 2

[0019] The preparation method of the electrolytic aluminum anode carbon block anti-oxidation coating described in Examples 2-5 is the same as that in Example 1.

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PUM

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Abstract

The invention relates to an anti-oxidizing paint used in production of electrolytic aluminum anode carbon blocks and a preparation method thereof. The anti-oxidizing paint for electrolytic aluminum anode carbon blocks comprises, by weight percent, 35 to 40% of borax or boric acid, 10 to 15% of kaolin, 30 to 35% of industrial phosphoric acid, 0 to 5% of industrial aluminum sulfate and 10 to 15% of water. According to the invention, materials used in the invention are cheap and easily available, production cost is low, and it is simple to construct; application of the anti-oxidizing paint enables the weight loss rate of anode carbon blocks to reduce by 52% and consumption of anode carbon blocks to be substantially decreased, thereby benefiting electrolytic aluminum enterprises in achieving the goals of energy saving and emission reduction.

Description

technical field [0001] An anti-oxidation paint for electrolytic aluminum anode carbon blocks and a preparation method thereof belong to the technical field of electrolysis, and specifically relate to an anti-oxidation paint applied when using electrolytic aluminum anode carbon blocks and a preparation method thereof. Background technique [0002] Under the overall situation of energy saving, emission reduction and carbon reduction, all walks of life are adopting measures to save energy. Specific to the electrolytic aluminum industry, the Hall-Heroult molten salt electrolysis method in electrolytic aluminum is still the only method for industrial aluminum smelting. The method is to Al 2 o 3 Dissolved in high-temperature molten salt, an electrochemical reaction occurs under the action of direct current, oxygen-containing complex ions discharge at the anode and oxidize the carbon anode to release CO 2 , Aluminum-containing complex ions are discharged at the cathode to obtain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/00C09D7/12C25C3/12
Inventor 翟相文翟晶婷
Owner 翟相文
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