Magnesium smelting reduction pot and preparation method thereof

A technology for reducing tanks and smelting magnesium, which is applied in the direction of manufacturing tools, casting molding equipment, metal processing equipment, etc., which can solve problems such as complex procedures and short life of tanks, so as to promote oxidation resistance, improve service life, and extend critical time Effect

Inactive Publication Date: 2010-08-18
BAOTOU BINGKE SILICON MAGNESIUM MATERIAL ENG TECH RES CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Japan's Furukawa Magnesium Factory tried to bury the reduction tank made of ordinary carbon steel in molten glass, whic

Method used

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  • Magnesium smelting reduction pot and preparation method thereof
  • Magnesium smelting reduction pot and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The composition of the magnesium refining reduction tank is by weight percentage:

[0026] C: 0.3%, Mn: 1.8%, Si: 1.0%, Cr: 25.5%, Ni7.0%:, Ti: 0.016%, Re: 0.04%, and the balance is iron;

[0027] The composition of the external coating layer is by weight percentage:

[0028] The particle size of zircon powder is 200 mesh, the addition amount is 55.3%, the addition amount of bentonite is 3.1%, powdered cellulose (sodium carboxymethyl cellulose) 2.5%, white latex (polyvinyl acetate emulsion) 1.5%, ethanol 29.5%.

[0029] The preparation method of described magnesium refining reduction tank is:

[0030] 1. According to the ratio of alloy raw materials in the magnesium reduction tank mentioned above;

[0031] 2. Various ingredients are put into the intermediate frequency furnace for melting, and the slag removal process should be strengthened during the smelting and pouring process;

[0032] 3. Preheat the mold barrel to 150°C, control the speed of the mold barrel to 71...

Embodiment 2

[0041] The composition of the magnesium refining reduction tank is by weight percentage:

[0042] C: 0.2%, Mn: 1.6%, Si: 1.5%, Cr: 26.0%, Ni8.0%:, Ti: 0.022%, Re: 0.05%, and the balance is iron;

[0043] The composition of the external coating layer is by weight percentage:

[0044] The particle size of zircon powder is 230 mesh, the addition amount is 63.7%, the addition amount of bentonite is 1.5%, the powdered cellulose (sodium carboxymethyl cellulose) is 2.0%, the white latex (polyvinyl acetate emulsion) is 2.1%, and the ethanol is 36.6%.

[0045] The preparation method of described magnesium refining reduction tank is:

[0046] 1. According to the ratio of alloy raw materials in the reduction tank for magnesium smelting mentioned above,

[0047] 2. Various ingredients are put into the intermediate frequency furnace for melting, and the slag removal process should be strengthened during the smelting and pouring process.

[0048] 3. Preheat the mold barrel to 200°C, contro...

Embodiment 3

[0057] The composition of the magnesium refining reduction tank is by weight percentage:

[0058] C: 0.35%, Mn: 2.0%, Si: 2.0%, Cr: 24.0%, Ni6.0%:, Ti: 0.019%, Re: 0.03%, and the balance is iron;

[0059] The composition of the external coating layer is by weight percentage:

[0060] The particle size of graphite is 250 mesh, the addition amount is 47.9%, the addition amount of bentonite is 3.8%, the powdered cellulose (sodium carboxymethyl cellulose) is 1.5%, the white latex (polyvinyl acetate emulsion) is 0.7%, and ethanol is 22.2%.

[0061] The preparation method of described magnesium refining reduction tank is:

[0062] 1. According to the ratio of alloy raw materials in the magnesium reduction tank mentioned above;

[0063] 2. Various ingredients are put into the intermediate frequency furnace for melting, and the slag removal process should be strengthened during the smelting and pouring process;

[0064] 3. Preheat the mold barrel to 225°C, control the speed of the ...

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Abstract

The invention relates to a magnesium smelting reduction pot and a preparation method thereof, which belong to the technical field of metal smelting. The magnesium smelting reduction pot comprises a pot body and an external application coating layer, and is characterized in that: the pot body comprises the following components in percentage by weight: 0.2 to 0.4 percent of C, 1.0 to 2.0 percent of Mn, 0.6 to 2.0 percent of Si, 24.0 to 26.0 percent of Cr, 6.0 to 8.0 percent of Ni, 0.015 to 0.05 percent of Ti, 0.03 to 0.10 percent of Re, and the balance of iron; and the external application coating layer comprises the following components in percentage by weight: 47.9 to 74.1 percent of zircon powder or graphite with the particle size of 200 to 270 meshes, 1.5 to 3.8 percent of bentonite, 1.5 to 2.9 percent of powdered cellulose (carboxymethylcellulose sodium), 0.7 to 2.4 percent of white latex (polyvinyl acetate emulsion), and 22.2 to 43.0 percent of ethanol. All types of the components of the pot body are put into an intermediate frequency furnace and are melted for pouring, and are brushed with a coating according to the component proportion after being cooled. Starting from each process step of preparing the magnesium smelting reduction pot, the components of materials of the reduction pot, a melting process and a centrifugal casting process are optimized and adjusted, and a high-temperature resistant coating is brushed on the surface of the reduction pot to effectively promote the oxidation resistance of the reduction pot at a high temperature, so the service life of the pot body is prolonged.

Description

technical field [0001] The invention relates to a magnesium smelting reduction tank and a preparation method thereof, belonging to the technical field of metal smelting. technical background [0002] Magnesium resources are extremely abundant in the earth's crust and oceans, and because of a series of advantages such as low density, high specific strength, and good electromagnetic shielding, magnesium has become the third major metal structural material after steel and aluminum, and is widely used in In many fields such as aerospace, automobiles, and electronics, there are currently two methods for producing magnesium: one is electrolysis, and the other is thermal reduction. Due to the large reserves of dolomite, a magnesium-containing ore resource, many countries in the world have continued to study the process of producing magnesium by thermal reduction for many years. In the process of producing magnesium by thermal reduction, the magnesium reduction tank is a very criti...

Claims

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Application Information

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IPC IPC(8): C22B26/22C22C38/58C22C38/50B22C9/24C04B35/66
Inventor 高平杨春霞狄石磊张建华张文波李进军邸建辉郭永亮
Owner BAOTOU BINGKE SILICON MAGNESIUM MATERIAL ENG TECH RES CENT
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