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Aluminum-magnesium carbon sliding plate brick for converter slag stopping and production method thereof

A technology of aluminum-magnesium-carbon sliding bricks and converter slag blocking, which is applied in the field of refractory materials, can solve the problems that magnesia-carbon bricks cannot meet the high-strength friction requirements of mechanism sliding plates, and achieve the elimination of high-energy consumption firing process and excellent slag erosion resistance , The effect of large absolute thermal expansion value

Inactive Publication Date: 2017-11-07
ANHUI XINHAI ENVIRONMENTAL PROTECTION NEW MATERIAL CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

The disadvantage is that due to the low hardness of the main raw material magnesia (Mohs hardness 5.5), the magnesia carbon brick cannot meet the repeated high-intensity friction requirements of the mechanism slide plate at high temperature

Method used

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  • Aluminum-magnesium carbon sliding plate brick for converter slag stopping and production method thereof
  • Aluminum-magnesium carbon sliding plate brick for converter slag stopping and production method thereof

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with embodiment.

[0027] A method for preparing an aluminum-magnesium-carbon sliding brick for slag blocking in a converter is characterized in that it is carried out in accordance with the following steps:

[0028] Step 1 Premixing: Feeding and mixing: first premix magnesia powder, antioxidants, asphalt powder, and carbon materials for 5-10 minutes;

[0029] Step 2 Feeding and mixing: first pour the corundum particles into the mixer and dry mix for 1-3 minutes, then add phenolic resin and continue mixing for 3-8 minutes, finally add pre-mixed powder, and continue mixing for 15-30 minutes to form a slurry;

[0030] Step 3 Press molding: Add the mixed mud into the mold and use a 1000-ton friction brick press to press it into adobe;

[0031] Step 4 Baking and curing: put the adobe in a drying kiln to bake and cure, the baking temperature is 250-300°C, and the holding time is 10-20h;

[0032] Step 5: G...

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Abstract

The invention discloses an aluminum-magnesium carbon sliding plate brick for converter slag stopping and a production method thereof. The aluminum-magnesium carbon sliding plate brick is produced from the following components in percentage by weight: 60-70% of corundum, 20-28% of magnesia powder, 2-7% of a carbon material, 2-5% of an anti-oxidant, and 3-5% of an organic binding agent. The method comprises: pre-mixing; feeding and mixed milling; press molding; baking for curing; polishing green faces, metal hooping and solid lubricant coating on work surfaces; and thermal insulation and drying. The invention has the advantages that the corundum with high hardness ensures the abrasion strength of the sliding plate surface and avoids the problem of steel drilling galling caused by the low strength of the surface; the corundum aggregate reduces the thermal expansion coefficient of materials and the thermal shock resistance is also significantly better than that of the magnesium carbon sliding, basically the same with that of aluminum carbon; and a fine powder part use a magnesium carbon material, so that the material has more excellent erosion resistance, is small in hole broadening after using, and longer in service life compared with aluminum carbon or aluminum zirconium carbon materials.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to an aluminum-magnesium carbon sliding plate for slag blocking in a converter and a preparation method thereof. Background technique [0002] The slag blocking method of converter sliding plate has the advantages of high slag blocking success rate, low slag dropping rate, excellent slag blocking effect and high automation rate, and has become the development trend of converter tapping slag blocking technology at home and abroad. As an important functional part of slag blocking, the sliding plate is located in a harsh environment and is replaced most frequently. It is the key to the stability, safety and cost control of the entire slag blocking system. Skateboard bricks should have excellent high temperature resistance strength, thermal shock stability, corrosion resistance and oxidation resistance, in order to obtain higher service life and stable operation...

Claims

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Application Information

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IPC IPC(8): C04B35/103C04B35/66C04B35/622C04B35/634C04B35/63
CPCC04B35/103C04B35/622C04B35/6303C04B35/63476C04B35/63496C04B2235/3206C04B2235/3821C04B2235/402C04B2235/424C04B2235/425C04B2235/428C04B2235/5427C04B2235/5436C04B2235/77C04B2235/96C04B2235/9607C04B2235/9676C04B2235/9684
Inventor 王建华陆启海涂方兵吕忠华
Owner ANHUI XINHAI ENVIRONMENTAL PROTECTION NEW MATERIAL CO LTD
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