Method and device for purifying refined aluminum and high-purity aluminum through continuous segregation

A high-purity, segregation technology, applied in the field of foundry metallurgy, can solve the problems of inconspicuous purification effect, unstable environmental conditions, and difficult manipulation, so as to avoid impurity accumulation layer, ensure relative stability, and reduce energy consumption.

Active Publication Date: 2013-01-09
KUNMING METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the invention has advanced technology and high degree of automation, the system is too complicated and difficult to control, and the method is not a real continuous production method. The liquid replenishment process not only affects the continuous production, but also destroys the stable environmental conditions for purification, which is not conducive to product components. the stability of
In addition, there is an enrichment layer of impurity elements in this method, and the purification effect is not obvious for elements whose purification rate is greatly affected by concentration.

Method used

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  • Method and device for purifying refined aluminum and high-purity aluminum through continuous segregation
  • Method and device for purifying refined aluminum and high-purity aluminum through continuous segregation
  • Method and device for purifying refined aluminum and high-purity aluminum through continuous segregation

Examples

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Effect test

Embodiment 1

[0036] Example 1: 99.85Al is melted in the static furnace, and the temperature of the molten aluminum flowing out of the static furnace is 700°C. The temperature of the molten aluminum in the crucible is controlled so that the temperature of the molten aluminum at the crystallizer is controlled within the range of 710°C, and the temperature of the crystallizer is controlled. The cooling speed ensures that the solidification interface of the aluminum liquid is at the entrance of the crystallizer, and then the crystal is drawn at a rate of 200mm / h. After the aluminum crystal grows to a certain length, it is cut and tested. The purity of aluminum can reach 99.95Al.

Embodiment 2

[0037] Example 2: 99.85Al is melted in the static furnace, and the temperature of the molten aluminum flowing out of the static furnace is 695°C. The temperature of the molten aluminum in the crucible is controlled so that the temperature of the molten aluminum at the crystallizer is controlled within the range of 678°C, and the temperature of the crystallizer is controlled. The cooling speed ensures that the liquid aluminum solidification interface is at the entrance of the crystallizer, and then the crystal is drawn at a rate of 100mm / h. After the aluminum crystal grows to a certain length, it is cut and tested. The purity of aluminum can reach 99.98Al.

Embodiment 3

[0038] Example 3: 99.85Al is melted in the static furnace, and the temperature of the molten aluminum flowing out of the static furnace is 695°C. The temperature of the molten aluminum in the crucible is controlled so that the temperature of the molten aluminum at the crystallizer is controlled within the range of 670°C, and the temperature of the crystallizer is controlled. The cooling speed ensures that the liquid aluminum solidification interface is at the entrance of the crystallizer, and then the crystal is pulled at a rate of 10mm / h. After the aluminum crystal grows to a certain length, it is cut and tested. The purity of aluminum can reach 99.995Al.

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Abstract

The invention relates to a method and a device for purifying refined aluminum and high-purity aluminum through continuous segregation and belongs to the field of casting metallurgy. The method and the device for purifying the refined aluminum and the high-purity aluminum through the continuous segregation are characterized in that crystallization of the refined aluminum and the high-purity aluminum is finished in flowing molten aluminum, the method and the device rely on a liquid supply system of production lines including a continuous casing production line, a continuous rolling production line and the like which need continuous liquid supply, the molten aluminum is from molten aluminum flowing out of a standing furnace, the flowing molten aluminum continuously provides a purification raw material, and continuous high-purity aluminum production is really achieved through the match of the method, the device and a rolling wheel crystal-pulling device. By means of the method, a stirring system is not required in the whole purification process, the energy consumption in the heat preservation process is reduced greatly, purified molten aluminum has no influence on follow-up production activities, the flowing molten aluminum enables the stability of purification raw material components to be ensured, and the uniformity of product components is ensured well under a certain process condition. The method greatly improves the production efficiency and simultaneously reduces the energy consumption, and a directional solidification and purification process is not influenced by the atmosphere environment inside a furnace.

Description

technical field [0001] The invention relates to a method and equipment for continuous segregation and purification of refined aluminum and high-purity aluminum, in particular to a segregation purification method with low energy consumption, high yield and high production efficiency, belonging to the field of casting metallurgy. Background technique [0002] Purification of metals, especially aluminum, by segregation is a mature industrial process. Through literature search, it is found that there are many invention patents for the preparation of high-purity aluminum by segregation method, among which the Chinese patent application number is 02111339.4, and the title of the invention is "purification method of vacuum continuum of high-purity aluminum". The applicant proposed a A method for continuously feeding aluminum liquid and intermittently absorbing the impurity element-enriched layer liquid. The method uses liquid aluminum as a raw material, and by strictly controlling...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B21/06C22B9/02
CPCY02P10/20
Inventor 杨钢李玉章谭国寅赵伟方树铭汤皓元陈越闫洪岳有成
Owner KUNMING METALLURGY INST
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