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Nontoxic refining agent for aluminum alloy

A technology of non-toxic refining agent and aluminum alloy, applied in the field of refining agent, can solve the problem of side effects of refining agent, and achieve the effect of simple method, convenient use and good iron removal effect.

Inactive Publication Date: 2018-06-22
徐州思源铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surface of aluminum is not easy to be corroded because of the dense oxide protective film. It is often used to manufacture chemical reactors, medical equipment, refrigeration equipment, petroleum refining equipment, oil and natural gas pipelines, etc., and in the preparation process of aluminum, it is necessary to The purpose of refining aluminum is to remove the inclusions in aluminum to improve the purity of aluminum. However, the current refining of aluminum often produces related toxic substances due to the side effects of refining agents.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] A non-toxic refining agent for aluminum alloy, characterized in that it is composed of the following components in weight percent: 20% sodium hexafluoroaluminate, 5% graphite powder, 1% silicon dioxide, 1% aluminum oxide, 5% sodium chloride %, sodium nitrate 20%, potassium fluorosilicate 15%, anhydrous calcium nitrate 1%.

[0010] The preparation method is as follows: after the above-mentioned components are configured in proportion, they are pulverized by a pulverizer, and an appropriate amount of water is added to mix them evenly, and then compressed into blocks by a press machine, and finally baked and dried.

Embodiment 2

[0012] A non-toxic refining agent for aluminum alloy, characterized in that: it is composed of the following components in weight percent: sodium hexafluoroaluminate 22%, graphite powder 8%, silicon dioxide 2%, aluminum oxide 2%, sodium chloride 8% %, sodium nitrate 22%, potassium fluorosilicate 18%, anhydrous calcium nitrate 3%.

[0013] The preparation method is as follows: after the above-mentioned components are configured in proportion, they are pulverized by a pulverizer, and an appropriate amount of water is added to mix them evenly, and then compressed into blocks by a press machine, and finally baked and dried.

Embodiment 3

[0015] A non-toxic refining agent for aluminum alloy, characterized in that it is composed of the following components in weight percent: sodium hexafluoroaluminate 25%, graphite powder 10%, silicon dioxide 3%, aluminum oxide 3%, sodium chloride 10% %, sodium nitrate 25%, potassium fluorosilicate 20%, anhydrous calcium nitrate 5%.

[0016] The preparation method is as follows: after the above-mentioned components are configured in proportion, they are pulverized by a pulverizer, and an appropriate amount of water is added to mix them evenly, and then compressed into blocks by a press machine, and finally baked and dried.

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PUM

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Abstract

The invention provides a nontoxic refining agent for aluminum alloy. The nontoxic refining agent is characterized by consisting of the following components in percentage by weight: 20% to 25% of sodium hexafluoroaluminate, 5% to 10% of graphite powder, 1% to 3% of silicon dioxide, 1% to 3% of aluminum oxide, 5% to 10% of sodium chloride, 20% to 25% of sodium nitrate, 15% to 20% of potassium fluosilicate and 1% to 5% of anhydrous calcium nitrate. A preparation method of the nontoxic refining agent comprises the following steps: proportionally preparing all components; crushing the components byusing a crusher; adding a suitable amount of water; mixing uniformly; pressing to form pieces by using a pressing machine; and finally drying in a baking way. The nontoxic refining agent provided bythe invention has the advantages of preventing over-limit of content of iron in aluminum alloy melt and being nontoxic, harmless and convenient to use; the method is simple; the cost is low; simple machining is realized; and a better iron removal effect is achieved.

Description

technical field [0001] The invention relates to the technical field of refining agents, in particular to an aluminum alloy non-toxic refining agent. Background technique [0002] Aluminum and aluminum alloys are currently widely used and one of the most economical and applicable materials. Although aluminum has a low density and low hardness, it can be made into various aluminum alloys, such as hard aluminum, super hard aluminum, anti-rust aluminum, cast aluminum aluminum etc. These aluminum alloys are widely used in manufacturing industries such as aircraft, automobiles, trains, and ships. In addition, space rockets, space shuttles, and artificial satellites also use a large amount of aluminum and its aluminum alloys. The conductivity of aluminum is second only to silver, copper, and gold, and it is widely used in the electrical manufacturing industry, wire and cable industry, and radio industry. Aluminum is a good conductor of heat, and aluminum can be used to manufactur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06C22C1/02C22C21/00
CPCC22C1/06C22C1/026C22C21/00
Inventor 周书红
Owner 徐州思源铝业有限公司