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A kind of aluminum alloy sodium removing agent and preparation method thereof

An aluminum alloy and mixture technology, applied in the field of metallurgy, can solve the problems of harming the health of employees, not finding a method for removing sodium, and burning aluminum slag violently, so as to achieve the effect of less product usage, less smoke and dust emissions, and less aluminum slag burning.

Active Publication Date: 2017-07-11
JIANGSU HUAQI ALUMINUM SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of using sodium removing agent, aluminum slag burns violently and produces corrosive gas, which seriously endangers the health of employees, causes environmental pollution and severe corrosion of plant equipment
So far, our country has not found a better and applicable solution to remove sodium

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In the embodiment of the present invention, an aluminum alloy sodium remover, the raw materials in parts by weight include: 49 parts of potassium chloride, 9 parts of potassium fluoroaluminate, 24 parts of magnesium chloride, 14 parts of hexachloroethane, 0.05 parts of water, chlorine 0.1 part of ammonium chloride, 0.1 part of ammonium carbonate, and 0.1 part of ammonium bicarbonate.

[0019] The preparation method of the aluminum alloy sodium removal agent, the specific steps are as follows:

[0020] (1) Weigh each raw material according to parts by weight;

[0021] (2) Add potassium chloride, magnesium chloride and hexachloroethane into the ball mill for 5 minutes;

[0022] (3) Add potassium fluoroaluminate to a ball mill and mill for 3 minutes, so that all raw materials are fully mixed to obtain a powdery mixture;

[0023] (4) Sieve the powdery mixture through a 80-mesh sieve;

[0024] (5) After quality inspection, it is packaged and put into storage.

Embodiment 2

[0026] In the embodiment of the present invention, an aluminum alloy sodium remover, the raw materials in parts by weight include: 49.5 parts of potassium chloride, 9.5 parts of potassium fluoroaluminate, 24.5 parts of magnesium chloride, 14.5 parts of hexachloroethane, 0.06 parts of water, chlorine 0.1 part of ammonium chloride, 0.1 part of ammonium carbonate, and 0.15 part of ammonium bicarbonate.

[0027] The preparation method of the aluminum alloy sodium removal agent, the specific steps are as follows:

[0028] (1) Weigh each raw material according to parts by weight;

[0029] (2) Add potassium chloride, magnesium chloride and hexachloroethane into the ball mill for ball milling for 6 minutes;

[0030] (3) Add potassium fluoroaluminate to a ball mill and mill for 3.5 minutes, so that all raw materials are fully mixed to obtain a powdery mixture;

[0031] (4) Sieve the powdery mixture through a 85-mesh sieve;

[0032] (5) After quality inspection, it is packaged and pu...

Embodiment 3

[0034] An aluminum alloy sodium remover, the raw materials in parts by weight include: 50 parts of potassium chloride, 10 parts of potassium fluoroaluminate, 25 parts of magnesium chloride, 15 parts of hexachloroethane, 0.08 parts of water, 0.14 parts of ammonium chloride, carbonic acid 0.13 parts of ammonium, 0.13 parts of ammonium bicarbonate.

[0035] The preparation method of the aluminum alloy sodium removal agent, the specific steps are as follows:

[0036] (1) Weigh each raw material according to parts by weight;

[0037] (2) Add potassium chloride, magnesium chloride and hexachloroethane into the ball mill for ball milling for 8 minutes;

[0038] (3) Add potassium fluoroaluminate to a ball mill and mill for 4 minutes, so that all raw materials are fully mixed to obtain a powdery mixture;

[0039] (4) Sieve the powdery mixture through a 90-mesh sieve;

[0040] (5) After quality inspection, it is packaged and put into storage.

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Abstract

The invention discloses an aluminum alloy sodium removal agent and a preparation method thereof. The aluminum alloy sodium removal agent comprises the following raw materials in parts by weight: potassium chloride, potassium fluoroaluminate, magnesium chloride, hexachloroethane, water and impurities, wherein the impurities are a mixture of ammonium chloride, ammonium carbonate and ammonium bicarbonate. The preparation method of the aluminum alloy sodium removal agent comprises the following steps: weighing all the raw materials according to the weight parts, sequentially adding the potassium chloride, magnesium chloride, hexachloroethane and potassium fluoroaluminate into a ball mill for ball milling, evenly mixing and screening, detecting and packaging. Residues can be removed by adsorbing and dissolving oxides and entrainments in a melt through a solvent, so that the aluminum slag burning phenomena can be effectively reduced, metal loss can be decreased, and further the production cost is lowered; the usage amount of the product is less, only 1-1.5kg sodium removal agent is need for removing 1kg of sodium, more than 80% of sodium in aluminum water can be removed, the potassium fluoroaluminate used is non-hydroscopic and non-toxic, the production environment is purified, smoke emission is reduced, and the aluminum alloy sodium removal agent is stable in performances.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to an aluminum alloy sodium remover and a preparation method thereof. Background technique [0002] In the process of producing aluminum alloy, aluminum water inevitably contains about 0.0021% sodium. If the sodium content in aluminum water is too high, cracks in aluminum alloy during casting and hot rolling are very serious. Therefore, the sodium content is required to reach a very low standard in actual production. Reducing the sodium content in aluminum water has become an important process in production. At present, there are two main methods for sodium removal, one is based on chlorine gas, which removes sodium during the refining process, but chlorine gas is expensive and produces toxic gas; the other is to add powdered sodium removal agent during the refining process to achieve the purpose of sodium removal. The main ingredients of sodium removers on the market are potas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B21/06C22B9/10
Inventor 谢石华
Owner JIANGSU HUAQI ALUMINUM SCI & TECH
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