A purification device for high-purity aluminum and its application method

A high-purity, heating device technology, applied in the field of foundry metallurgy, can solve problems such as unfavorable large-scale industrial production, impurity removal effect needs to be improved, difficult liquid-solid interface stirring, etc., to improve product purity and crystal growth rate, and facilitate large-scale scale. Production, the effect of avoiding the interference of the magnetic field

Active Publication Date: 2016-04-20
RUYUAN YAO AUTONOMOUS COUNTY DONGYANGGUANG FORMED FOIL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the device is smelted under vacuum conditions, the equipment cost is high, and the production efficiency is low; the device integrates smelting and solidification, which is not conducive to large-scale industrial production; The generated magnetic field interferes greatly with the magnetic field of the electromagnetic stirrer, making it difficult to uniformly and effectively stir the liquid-solid interface, and its impurity removal effect needs to be improved

Method used

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  • A purification device for high-purity aluminum and its application method
  • A purification device for high-purity aluminum and its application method
  • A purification device for high-purity aluminum and its application method

Examples

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Effect test

Embodiment 1

[0026] 1) Prepare materials, choose 500Kg of high-purity aluminum with a purity of 99.99% as raw material, clean the surface and dry it, put it into the melting furnace, heat it to 740 ° C until it is completely melted, and keep it warm for 1 hour, add the intermediate alloy, and turn on the stirrer. After reacting for 0.5-2 hours, keep it still for heat preservation;

[0027] 2) Prepare the furnace, raise the lower lead mechanism to the highest position, that is, the high-purity aluminum plate is in direct contact with the crucible, turn on the heating device, and heat the empty furnace to 740 °C and then keep it warm;

[0028] 3) Segregation, open the furnace cover of the device, use a vacuum ladle to absorb 49.8Kg of heat-preserved aluminum melt into the device, close the furnace cover, heat to 740°C for 0.5h, turn on the electromagnetic stirrer, start the solidification device and the lower Induction mechanism, the induction rate is 22cm / h. After the crystal grows, open th...

Embodiment 2

[0032] 1) Prepare materials, choose 500Kg of high-purity aluminum with a purity of 99.996% as raw material, clean the surface and dry it, put it into the melting furnace, heat it to 720 ° C until it is completely melted, and keep it for 1 hour, add the intermediate alloy, and turn on the stirrer. After reacting for 0.5-2 hours, keep it still for heat preservation;

[0033] 2) Prepare the furnace, raise the lower lead mechanism to the highest position, that is, the high-purity aluminum plate is in direct contact with the crucible, turn on the heating device, and heat the empty furnace to 720°C and then keep it warm;

[0034] 3) Segregation, open the furnace cover of the device, use a vacuum ladle to absorb 58.6Kg of heat-preserved aluminum melt into the device, close the furnace cover, heat to 720°C for 0.5h, turn on the electromagnetic stirrer, start the solidification device and the lower Induction mechanism with a down-induction rate of 10cm / h. After the crystal grows, open ...

Embodiment 3

[0038] 1) Prepare materials, choose 500Kg of high-purity aluminum with a purity of 99.99% as raw material, clean the surface and dry it, put it into the melting furnace, heat it to 750 ° C until it is completely melted, and keep it warm for 1 hour, add the intermediate alloy, and turn on the stirrer , after reacting for 0.5-2 hours, let it stand for heat preservation;

[0039] 2) Prepare the furnace, raise the lower lead mechanism to the highest position, that is, the high-purity aluminum plate is in direct contact with the crucible, turn on the heating device, and heat the empty furnace to 750 °C and then keep it warm;

[0040] 3) Segregation, open the furnace cover of the device, use a vacuum ladle to absorb 97.9Kg of heat-preserved aluminum melt into the device, close the furnace cover, heat to 750°C for 0.5h, turn on the electromagnetic stirrer, start the solidification device and the lower Induction mechanism, the induction rate is 28cm / h. After the crystal grows, open th...

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Abstract

The invention relates to a purification device for high purity aluminum and a using method of the purification device. The purification device comprises a furnace body, a heating device, a solidifying device, an electromagnetic stirring device, a drop mechanism and a fixed bracket, wherein the heating device is fixedly arranged on the fixed bracket and positioned inside a heat insulation device, the solidifying device is arranged below the furnace body and is coaxially connected with the furnace body, the electromagnetic stirring device and the solidifying device are horizontally placed and are coaxially fixed, and the drop mechanism is arranged at the bottom of the furnace body and is connected with the lower end of the solidifying device. The working state of the device is in an ordinary pressure without a vacuum device, so that the equipment cost can be lowered, the process time can be shortened and the production efficiency can be greatly improved. The maximum growth rate of crystals can reach 30cm / h. The yield of 4N pure aluminum melts which are primarily purified can reach over 85% and the purity of the products can reach up to 5.5N.

Description

technical field [0001] The invention relates to a device in the technical field of foundry metallurgy, in particular to a high-purity aluminum purification device, and also relates to a method for using the purification device. technical background [0002] In the field of electronics industry, especially in high-tech fields such as optoelectronic storage media, semiconductor devices, and superconducting cables, the purity of aluminum is very high, and high-purity aluminum of 5N to 6N is generally required. At present, most countries in the world use three-layer liquid electrolytic refining method, segregation principle purification method, organic solution electrolysis method, etc. to prepare high-purity or high-purity aluminum of various purity. The purity of aluminum extracted by the advanced three-layer liquid electrolysis method is basically between 4N and 4N8, but the power consumption is generally above 13,000kwh / t, which is about 4 to 5 times that of the segregation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B21/00C22B9/02
CPCY02P10/20
Inventor 何天明
Owner RUYUAN YAO AUTONOMOUS COUNTY DONGYANGGUANG FORMED FOIL CO LTD
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