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Method and device for removing refining slag generated by magnesium alloy smelting

A magnesium alloy and refining slag technology is applied in the field of removing refining slag produced by magnesium alloy smelting, which can solve the problems of magnesium alloy melt burning, low capacity utilization rate, oxide inclusions, etc., and achieves small changes and reduced labor intensity of workers. , the effect of less investment

Active Publication Date: 2018-04-17
SHANXI BADA MAGNESIUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this method include: 1) When the slag bucket enters and leaves the liquid surface, including the blowing process, it will cause damage to the surface of the magnesium alloy melt in the crucible, causing serious burning of the magnesium alloy melt and bringing new oxides Inclusion
3) The upper part of the crucible must reserve a space equivalent to the volume of the device to prevent the overflow of the magnesium alloy melt, and the utilization rate of the crucible capacity is low

Method used

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  • Method and device for removing refining slag generated by magnesium alloy smelting
  • Method and device for removing refining slag generated by magnesium alloy smelting
  • Method and device for removing refining slag generated by magnesium alloy smelting

Examples

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Effect test

Embodiment 1

[0032] (1) After the magnesium alloy refining operation is completed, remove the refining tools such as the mixer and the gas blowing pipe from the melting crucible 1, and use sulfur powder, covering agent, etc. to protect the melt surface 2 of the magnesium alloy melt 5 to prevent the magnesium alloy from melting. Melt 5 oxidizes and catches fire.

[0033] (2) Avoid all operations entering the magnesium alloy melt 5, and make the magnesium alloy melt 5 enter a static state. The standing time is 10 minutes, so as to ensure that the refining slag in the magnesium alloy melt 5 is fully separated from the magnesium alloy melt 5, and the bottom refining slag 4 is formed at the bottom of the crucible. After static treatment, the liquid slag is separated to form the magnesium alloy melt 5 on the upper layer and the refining slag 4 on the bottom of the crucible, forming an interface 3 between the two.

[0034] (3) After standing still, slowly insert the inlet end of the preheated su...

Embodiment 2

[0039] (1) After the magnesium alloy refining operation is completed, remove the refining tools such as the mixer and the gas blowing pipe from the melting crucible 1, and use sulfur powder, covering agent, etc. to protect the melt surface 2 of the magnesium alloy melt 5 to prevent the magnesium alloy from melting. Melt 5 oxidizes and catches fire.

[0040](2) Avoid all operations entering the magnesium alloy melt 5, and make the magnesium alloy melt 5 enter a static state. The standing time is 20 minutes, so as to ensure that the refining slag in the magnesium alloy melt 5 is fully separated from the magnesium alloy melt 5, and the bottom refining slag 4 is formed at the bottom of the crucible. After static treatment, the liquid slag is separated to form the magnesium alloy melt 5 on the upper layer and the refining slag 4 on the bottom of the crucible, forming an interface 3 between the two.

[0041] (3) After standing still, slowly insert the inlet end of the preheated suc...

Embodiment 3

[0046] (1) After the magnesium alloy refining operation is completed, remove the refining tools such as the mixer and the gas blowing pipe from the melting crucible 1, and use sulfur powder, covering agent, etc. to protect the melt surface 2 of the magnesium alloy melt 5 to prevent the magnesium alloy from melting. Melt 5 oxidizes and catches fire.

[0047] (2) Avoid all operations entering the magnesium alloy melt 5, and make the magnesium alloy melt 5 enter a static state. The standing time is 30 minutes, so as to ensure that the refining slag in the magnesium alloy melt 5 is fully separated from the magnesium alloy melt 5, and the bottom refining slag 4 is formed at the bottom of the crucible. After static treatment, the liquid slag is separated to form the magnesium alloy melt 5 on the upper layer and the refining slag 4 on the bottom of the crucible, forming an interface 3 between the two.

[0048] (3) After standing still, slowly insert the inlet end of the preheated su...

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Abstract

The invention discloses a method and a device for removing refining slag generated by magnesium alloy smelting, and relates to the technical field of magnesium alloy smelting. The device comprises a suck-back slag sucking tube, a suck-back pump and a refining slag recycling crucible. The method comprises the following steps of: after smelting is completed, standing for 10 minutes or more after spraying a covering agent to a magnesium alloy melt liquid surface, slowly inserting an inlet end of the pre-heated suck-back slag sucking tube into a smelting crucible until the inlet end comes into contact with a pot bottom, and connecting an outlet end of the suck-back slag sucking tube to a liquid outlet tube of the suck-back pump; starting the suck-back pump to operate for 5-30 seconds; connecting an outlet end of the preheated suck-back slag sucking tube to a liquid inlet end of the suck-back pump, and starting the suck-back pump for removing the pot-bottom refining slag into the recyclingpot. The method can prevent secondary pollution of magnesium alloy melt in a process of removing the refining slag, improves the magnesium alloy product quality, shortens a magnesium alloy productionperiod, and reduces labor intensity. Equipment adopted by the method is less in investment, small in change, strong in operability and easy to realize.

Description

technical field [0001] The invention relates to the technical field of magnesium alloy smelting, in particular to a method and a device for removing refining slag produced in magnesium alloy smelting. Background technique [0002] The chemical properties of magnesium and magnesium alloys are relatively active. During melting and storage, they are easy to react with air, moisture, and acidic media. It will have a very adverse effect on the corrosion resistance, mechanical properties and other performance of magnesium alloy products. Therefore, in the smelting process of magnesium and magnesium alloys, the removal of oxides, impurity elements and other impurities in the melt through refining treatment plays a key role in improving the performance of magnesium alloy products. In the industry, fluxes containing halogen salts such as magnesium chloride, potassium chloride, sodium chloride, calcium fluoride, barium chloride, etc. are usually used to refine and remove impurities f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C23/00F27D3/15
CPCC22C1/02C22C23/00F27D3/1545
Inventor 王彤刘青春樊世波刘英伟秦俊安王俊凯
Owner SHANXI BADA MAGNESIUM