Preparation method of dregs remover for smelting aluminum alloy

A technology of aluminum alloy and slag agent, which is applied in the field of preparation of slag remover for aluminum alloy smelting, can solve the problems of affecting the safety of operators, poor toughness of aluminum alloy, unstable slag removal effect, etc., so as to facilitate slag removal and prevent The effect of droplet splashing and good insulation coverage effect

Inactive Publication Date: 2019-06-11
常州西夏墅东方工具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem mainly solved by the present invention is that the currently commonly used slag remover is perlite slag remover. Due to the large differences in the physical properties of perlite in various parts of the country, the slag removal effect is unstable during aluminum alloy smelting, and the produced aluminum alloy has toughness. In addition, when the perlite slag remover is in use, due to the thermal expansion of the crystallization water, it is easy to cause the droplet to splash and affect the safety of the operator. A preparation method for the slag remover for aluminum alloy smelting is provided.

Method used

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  • Preparation method of dregs remover for smelting aluminum alloy

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Embodiment 1

[0030] Preparation of kaolinite powder:

[0031] Take kaolinite, put it in a hydraulic crusher and break it into pieces, put the kaolinite pieces in a ball mill tank, control the mass ratio of balls to material to 15:1, ball mill with a speed of 450r / min for 6h, pass 150 mesh sieve to obtain kaolinite powder.

[0032] Preparation of amorphous kaolinite powder:

[0033] Put the kaolinite powder in a tubular resistance furnace, heat up to 150°C, and preheat for 1 hour. After the preheating is completed, program the temperature to 1150°C at a rate of 5°C / min. The ridge stone was quenched in an ice-water bath for 20 minutes to obtain amorphous kaolinite, and the amorphous kaolinite was put into a mill for grinding treatment, and passed through a 100-mesh sieve to obtain amorphous kaolinite powder.

[0034] Preparation of modified amorphous kaolinite particles:

[0035] Stir and mix the sodium silicate and the amorphous kaolinite powder obtained above for 5 minutes at a mass rat...

Embodiment 2

[0043] Preparation of kaolinite powder:

[0044] Take kaolinite, put it in a hydraulic crusher and break it into pieces, put the kaolinite pieces in a ball mill tank, control the mass ratio of balls to material to 15:1, ball mill at 470r / min for 7h, pass 150 mesh sieve to obtain kaolinite powder.

[0045] Preparation of amorphous kaolinite powder:

[0046] Put the kaolinite powder in a tube-type resistance furnace, heat up to 170°C, and preheat for 1 hour. The ridge stone was quenched in an ice-water bath for 23 minutes to obtain amorphous kaolinite, and the amorphous kaolin was put into a mill for grinding treatment, and passed through a 100-mesh sieve to obtain amorphous kaolinite powder.

[0047] Preparation of modified amorphous kaolinite particles:

[0048] Sodium silicate and the amorphous kaolinite powder obtained above were stirred and mixed for 7 minutes according to the mass ratio of 1:5 to obtain the mixed powder, which was placed in a ball mill jar, and the mass...

Embodiment 3

[0056] Preparation of kaolinite powder:

[0057] Take kaolinite, put it in a hydraulic crusher and break it into pieces, put the kaolinite pieces in a ball mill tank, control the mass ratio of ball to material to 15:1, ball mill at 500r / min for 8h, pass 150 mesh sieve to obtain kaolinite powder.

[0058] Preparation of amorphous kaolinite powder:

[0059] Put the kaolinite powder in a tube-type resistance furnace, heat up to 200°C, and preheat for 2 hours. The ridge stone was quenched in an ice-water bath for 25 minutes to obtain amorphous kaolinite, and the amorphous kaolinite was put into a mill for grinding treatment, and passed through a 100-mesh sieve to obtain amorphous kaolinite powder.

[0060] Preparation of modified amorphous kaolinite particles:

[0061] Stir and mix the sodium silicate and the amorphous kaolinite powder obtained above for 10 minutes according to the mass ratio of 1:5 to obtain the mixed powder, put the mixed powder in a ball mill jar, and mix th...

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Abstract

The invention belongs to the technical field of casting material preparing, specially relates to a preparation method of a dregs remover for smelting an aluminum alloy. According to the preparation method, amorphous kaolinite powder is prepared from kaolinite processed as raw materials, modified amorphous kaolin particles are prepared from mixing the amorphous kaolinite powder and sodium silicate,and finally the dregs remover is prepared from mixing and grinding ball-milling mixed powder, cryolite powder, titanium boron crystal powder and the like. According to the preparation method of the dregs remover for smelting the aluminum alloy, sodium aluminate salt at the interface between the kaolinite and cryolite can improve interfacial force of a cryolite overlying coating, the good heat preservation covering effect is performed, the molten drop spattering preventing effect is performed, microdilatancy of prepared amorphous kaolinite under the high temperature can prevent growth and gathering of tiny grains of the aluminium alloy, strengthening phase silicification is generated and distributed uniformly in an a-Al substrate, and thus anti-cracking performance of aluminum melt after solidification is improved; In addition, titanium and boron in the added titanium boron crystal powder can refine alloy grains, toughness of the prepared aluminum alloy is increased, and the application prospect is wide.

Description

technical field [0001] The invention belongs to the technical field of casting material preparation, and in particular relates to a preparation method of a slag remover for aluminum alloy smelting. Background technique [0002] With the continuous development and innovation of casting technology in our country, new casting equipment and casting technology are constantly being applied, and large-scale casting automatic molding lines have also been rapidly promoted and used in China. The progress of technology has also put forward challenges for traditional casting materials. new requirements. [0003] Slag remover is an auxiliary material in casting materials, and it is a product that provides convenience for slag removal. The slag remover melts under the high temperature operation above 1200 ℃, and has cohesiveness, which can effectively gather and adsorb the scum and slag inclusions on the surface of the metal solution. Its chemical properties are stable, and it will not c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06C22C21/00
Inventor 邢瑞
Owner 常州西夏墅东方工具有限公司
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