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Aluminum Oxide Ceramic Cone-Shaped Pipe for Mining Industry
Product description
Alumina Ceramic Tube Property:
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Chemical competent |
Al2O3 |
≥85% |
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SiO2 |
<12% |
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Fe2O3 |
<0.5% |
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Alkaline matter |
<2.5% |
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Density |
2.6 g/cm3 |
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Hardness |
7 M |
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Water absorption |
<0.2% |
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Rupture strength |
>1300kg/cm2 |
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Gas tightness |
Kept for ten minutes at negative pressure of 1.3Kpa. The pressure drop is less than 0.3Kpa. |
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Heat tolerance |
Insert the pipe into the furnace at a depth of 20mm. Heat to 1600ºC and maintain for 30 minutes. |
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Alkali tolerance |
In the Na2CO3 solution of 2N concentration, boil for 15 hours with the weight loss not greater than 20mg/dm2. |
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Volume resistance |
>2*10(5) Ω·cm/1300ºC |
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Breakdown voltage |
18kv/cm |
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Expansion coefficient |
5*10(-8) |
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Temperature for use |
Long-term: 1400ºC Short-term: 1600ºC |
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Chill and abrupt heat |
1300ºC~room temperature not cracking thrice. |
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Application:
Abrasion resistant ceramic linings mainly include elbows, straight pipes, tees, reducer pipes, etc, and they are used for ceramic lined pipework and of pneumatic conveying and slurry pumping. The conveying medium is featured by high hardness, fast and big flow, alumina ceramic rings can effectively reduce the speed of wearing through by continuous impact, abrasion and corrosion to pipe wall when long-term conveying medium.
Wear is fast when the piping conveying pointed materials(ash, coal powder, mine flavor powder, tailings, cement etc), especially for elbow. Pipeline corroded will be quickly worn out when conveying gas, fluid and solid materials of intensive corrosion.
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