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Method and device for preparing high purity metal or alloy through efficient distillation method

A distillation method and a technology for purifying metals, which are applied in the field of high-efficiency distillation to prepare high-purity metals or alloys, and can solve the problems of low efficiency in purifying metals or alloys.

Active Publication Date: 2021-11-09
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The purpose of the present invention is to provide a method and device for preparing high-purity metals or alloys by high-efficiency distillation to solve the technical problem of low efficiency in the existing distillation methods for purifying metals or alloys in the prior art; Many technical effects that the preferred technical scheme in the technical scheme can produce (in step III and step IV, gaseous metal or alloy is impurity, and metal or alloy droplet is purified metal or alloy, and this method is applicable to the high boiling point metal or alloy Purification; the collection chamber is set as a melting pool, which can be cast into blocks when collecting high-purity metal or alloy droplets; the collection chamber is set as a melting pool, when collecting high-purity metal or alloy droplets, it can be formed by continuous melting and casting Rod, block or strip profiles; the collection chamber is set as a cooling chamber, which can form metal or alloy spheroidized powder with the surface tension of high-purity metal or alloy droplets during cooling; in the process of purification, select the corresponding collection according to actual needs The structure and process of the device can directly obtain the high-purity metal or alloy in the desired form; in step III and step IV, the gaseous metal or alloy is the purified metal or alloy, and the metal or alloy liquid droplets are impurities. This method is suitable for low boiling point Purification of metals or alloys; the device for preparing high-purity metals or alloys includes a heating device, which is used for melting or heat preservation of the metal or alloy to be purified; a plurality of communicating holes are distributed on the wall of the centrifuge cavity, and the liquid droplets, Atomization effect is remarkable, etc.); see below for details

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  • Method and device for preparing high purity metal or alloy through efficient distillation method
  • Method and device for preparing high purity metal or alloy through efficient distillation method
  • Method and device for preparing high purity metal or alloy through efficient distillation method

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Embodiment 1

[0047] The invention provides a method for preparing high-purity high-boiling point metals or alloys by high-efficiency distillation, which is suitable for the preparation of high-boiling point high-purity metals or alloys. Taking the preparation of high-purity aluminum metal as an example, refer to figure 1 and Figure 4 , the method for preparing high-purity aluminum metal by high-efficiency distillation at least includes the following steps:

[0048] Step (I) Melting: heating primary purity aluminum ingot (melting point: 600°C) to 900°C to melt it to form molten metal aluminum.

[0049] If necessary, the alloying agent can be added to alloy and float some impurities or precipitate and separate them.

[0050] Step (II) centrifugation: import the molten metal aluminum into the centrifuge chamber 221, and the centrifuge chamber 221 rotates at a speed of 120r / min. The communication hole 224 with a diameter of 3 mm on the wall enters the distillation chamber 14 to realize drop...

Embodiment 2

[0056] The difference between embodiment 2 and embodiment 1 is:

[0057] In step (IV), the collection chamber 41 is set as a casting pool, and the high-purity aluminum metal droplets are continuously melted and cast in the casting pool to produce rod-shaped, strip-shaped or block-shaped profiles of different sizes.

Embodiment 3

[0059] The difference between embodiment 3 and embodiment 1 is:

[0060] In step (IV), the collection chamber 41 is set as a cooling chamber, and the high-purity aluminum metal droplets are cooled in the cooling chamber, and under the action of its surface tension, aluminum powder is formed, which is used for powder coating, 3D printing and powder coating. Metallurgy, etc.

[0061] The present invention also provides embodiment 4 and embodiment 5, and its difference with above-mentioned embodiment 1-3 is:

[0062]

[0063]

[0064] All the other steps are the same.

[0065] Adopt the preparation method of embodiment 1-embodiment 5 and the molten metal purity before and after its treatment is described in the table below:

[0066] Example Metal Before purification (%) After purification (%) 1 aluminum 99.95 99.991 2 aluminum 99.95 99.987 3 aluminum 99.95 99.982 4 copper 99.97 99.996 5 manganese 99.93 99.980

...

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Abstract

The invention provides a method and a device for preparing high purity metal or alloy through an efficient distillation method, relates to the technical field of metal or alloy purification, and solves the technical problem that in the prior art, the efficiency of purifying metal or alloy through an existing distillation method is low. The device comprises a purifying plant body provided with a distillation chamber and a centrifugal cavity provided with a centrifugal chamber, wherein the centrifugal chamber is communicated with the distillation chamber; and a to-be-purified metal or alloy inlet, a metal or alloy vapor outlet and a metal or alloy discharging port are formed in the purifying plant body. The method and the device are suitable for metal or alloy with the melting point below 1500 DEG C, purification is achieved by means of different boiling points and saturation vapor pressures of impurity elements contained in the metal or alloy, a gas-liquid interface is improved by conducting droplet formation and atomization on the molten metal or alloy, the vaporization efficiency is improved, and the purification efficiency is high on the basis that the purification effect is guaranteed.

Description

technical field [0001] The invention relates to the technical field of metal or alloy purification, in particular to a method and device for preparing high-purity metal or alloy by high-efficiency distillation. Background technique [0002] Metals or alloying elements mainly exist in the form of oxide ore and sulfide ore in nature. Therefore, it generally needs to be continuously enriched and purified through mineral processing, pyrometallurgy or hydrometallurgy. The impurity elements in minerals are very complex, with various components and properties, and some elements are difficult to separate because of their similar properties. Therefore, general metals or alloy materials contain various elements and components. However, different metals or alloy materials have different characteristics and application fields, and the existence of impurity elements will seriously affect the original characteristics and performance of metal or alloy materials. Therefore, the purificat...

Claims

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Application Information

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IPC IPC(8): C22B9/02
CPCC22B9/02Y02P10/20
Inventor 孙院军丁向东曾毅孙军
Owner XI AN JIAOTONG UNIV
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