Method for producing outgassing head guiding dispersion through gas

A manufacturing method and gas introduction technology, applied in the manufacture of converters, lighting and heating equipment, furnace components, etc., can solve the problems of poor corrosion resistance and resistance to molten liquid erosion, low density of ventilating components, and complex processing technology. Achieve the effect of improving melt flow, small voids, and small particle voids

Inactive Publication Date: 2010-09-08
NAN AN SANJING SOLAR POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main characteristics of the diffused air supply element with carbides are high porosity and good air permeability. The main disadvantage is that the added carbides are easy to burn out during high temperature treatment, resulting in low density of the breathable element, low high temperature strength, and low immersion resistance. Poor corrosion resistance and melt erosion resistance, low service life, generally less than 10 furnaces, complex processing technology, high production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Choose high-purity zirconia that is resistant to high temperatures;

[0026] 2. Grind high-purity zirconia to particles with a size of 75-10μm;

[0027] 3. Add 25% sodium hydroxide liquid to the zirconia, the volume ratio of the added liquid to the zirconia particles is 0.3:1, and stir it evenly;

[0028] 4. Put the uniformly stirred high-purity zirconia into the forming mold;

[0029] 5. Heat the mold to 800°C, place it under a pressure device above 500T, press for 4 hours, and open the mold when the temperature drops to 50°C to take out the parts;

[0030] 6. Place the parts in a dark place for 10 days to allow the sodium hydroxide to continue to volatilize;

[0031] 7. The parts are sent to a high-temperature furnace for sintering, heated to 1000°C at a rate of 2°C per hour, kept for 48 hours, and then cooled to 200°C at a rate of 2°C per hour, and taken out.

[0032] 8. After the sintering of the gas head is completed, a metal pipe is installed at the bottom of the gas head ...

Embodiment 2

[0035] 1. Choose high-purity zirconia and magnesia as high temperature resistant materials;

[0036] 2. Grind high-purity zirconium oxide and magnesium oxide to 75-10μm size particles respectively, and mix the two kinds of particles after grinding at a ratio of 50%;

[0037] 3. Add 30% sodium hydroxide liquid to the mixed particles, and the volume ratio of the added liquid to the zirconia particles is 0.3:1, and stir evenly;

[0038] 4. Put the uniformly stirred high-purity zirconia into the forming mold;

[0039] 5. Heat the mold to 800°C, place it under a pressure device above 500T, press for 4 hours, and open the mold when the temperature drops to 50°C to take out the parts;

[0040] 6. Place the parts in a dark place for 10 days to allow the sodium hydroxide to continue to volatilize;

[0041] 7. The parts are sent to a high-temperature furnace for sintering, heated to 1000°C at a rate of 2°C per hour, kept for 48 hours, and then cooled to 200°C at a rate of 2°C per hour, and taken o...

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PUM

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Abstract

The invention relates to a method for producing a dispersion and run-through gas introduction outgassing head. The method adds basic solution into high temperature resistant micro scale highly pure metal oxide particles, the mixture is stirred evenly, carried out high-pressure forming and sintered into an outgassing gas part; the bottom of the outgassing gas part is loaded with a metal conduit and a mental plate is taken as a jacket to ensure that the gas can run out from the top. The outgassing gas part produced by the method has even gas outgassing, is conducive to improving the flow of molten solution, causes the temperature in the molten solution to be even and reaction to be complete, effectively removes impurities and simultaneously avoids gas waste; the outgassing gas part has small granular space and is not easy to be blocked and conducive to prolonging the service life of the outgassing head. Through practice, the outgassing head produced by the method can be used for 50 times continuously under the condition of applying oxygen and 100 times continuously under the condition of applying oargon.

Description

Technical field [0001] The present invention relates to a method for manufacturing a gas introduction part in a metal smelting equipment, in particular to a method for manufacturing a gas introduction part for a metal silicon smelting equipment. Background technique [0002] In the metal smelting process, in order to improve the quality of the metal, different gases must be introduced and blown into the molten metal to produce a stirring effect in the molten metal to balance the imbalance of smelting components and temperature , In order to achieve the effect of separating impurities. Existing gas introduction adopts the method of top blowing or bottom blowing of cluster gas. The specific general method is to use one or more straight-through gas conduits with a diameter of 3 mm and introduce them into the smelting vessel under a certain pressure. For example, the Chinese invention patent CN1066888 provides a gas supply element at the bottom of a metallurgical furnace and a manuf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C5/48F27D23/00C04B35/66F27D99/00
Inventor 郑智雄林霞戴文伟胡满根闻震利洪紫州
Owner NAN AN SANJING SOLAR POWER
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