Alumina Ceramic Crucible For Metal Calcination Experiment
- YUNXING
- China Jinzhou
- 5-30 Days
- 3,000-5,000/month(Looking for distributors)
Features of alumina ceramic crucible:
A. Heat resistance is about 1600 degrees, suitable for smelting samples of acidic materials such as K2S207.
B. Generally, alkaline materials such as NaOH, Na2O2, Na2CO3 etc. cannot be used as a flux for smelting, so as not to corrode the porcelain crucible.
C. Porcelain crucible must not come into contact with hydrofluoric acid.
Alumina Ceramic Crucible For Metal Calcination Experiment
My factory looking for distributors.
Characteristics of alumina ceramic crucible: heat resistant about 1600 degrees, suitable for K2S207 and other acidic materials melting samples.Generally can not be used to Na0H, Na202, Na2CO3 and other alkaline materials as flux melting, so as not to corrode the porcelain crucible.Porcelain crucible must not contact hydrofluoric acid.
The alumina ceramic crucible can be boiled and cleaned by dilute HCl to ensure the purity of the material and its high temperature resistance.Material high density, good oxidation resistance, 400-500 degrees higher than graphite material, up to 900 degrees, long service life.It has high heat resistance, low thermal expansion coefficient, good thermal shock resistance and good corrosion resistance.Stable chemical properties, basically no reaction with the melted metal, improve the purity of the alloy.
Recommended products:
Big diameter tube:
Used in various industrial furnaces Field, do furnace tube,
And other uses. High temperature resistance, insulation.
Protective tube:
For thermocouple External protection tube.insulation,
High temperature resistance, Good air tightness
Alumina ceramic performance index (Notice of Correct in Leakeage Rate）
NO. | Property | Unit | Alumina |
1 | Al2O3 | % | >99.3 |
2 | SiO2 | % | — |
3 | Density | g/cm3 | 3.88 |
4 | Water absorption | % | 0.01 |
5 | Compressive strength | MPa | 2300 |
6 | 20℃ leakage rates | Torr・L/sec | >10-11=1.33322×10-12Pa・m3/sec |
7 | Twisting in high temperature | mm | 0.2 allowed in 1600℃ |
8 | Bonding in high temperature | not bonded in 1600℃ | |
9 | 20—1000℃ coefficient of thermal expansion | mm.10-6／℃.m | 8.2 |
10 | Thermal conductivity | W/m.k | 25 |
11 | Electric insulation strength | KV/mm | 20 |
12 | 20℃direct current insulation resistance | Ohm/cm | 1014 |
13 | High-temperature insulation resistance | 1000℃ MΩ | ≥0.08 |
1300℃ MΩ | ≥0.02 | ||
14 | Thermal shock resistance | 4 times not cracked in 1550℃ | |
15 | Maximum working temperature | ℃ | 1800 |
16 | Hardness | Mohs | 9 |
17 | Flexural strength | Mpa | 35 |
Our factory
Jinzhou Yunxing Industrial Ceramics Co., Ltd. was established in 2000, mainly producing various types of tubular ceramic products and various industrial parts with alumina content above 99.3%. The factory covers an area of 4000 square meters.
The company currently has 3 1800 ° C high-temperature furnaces and 2 1400 ° C low-temperature kilns independently designed and manufactured. The molding process is mainly based on grouting molding, and has other molding process equipment such as extrusion and hot die casting.
The company has 105 employees, including one senior ceramic engineer, three engineers, six overseas sales staff, and four professional after-sales staff.
RFQ
1.Why alumina crucible is used?
Alumina Crucible Applications
Used as a material for industrial furnaces due to its ability to maintain its hardness at high temperatures. Used as a protector for high- temperature thermal couples. Used as a material for the chemical industry due to its high corrosion resistance.
2.What is the maximum temperature for alumina crucible?
The temperature range of alumina crucibles is typically between 1600°C to 1800°C.
3.Why is alumina suitable as a refractory material?
Alumina is also widely used in refractory products, due to its high melting point. It is especially suited to demanding applications where the strength of the refractory must be retained at high temperatures.
Alumina purity test report
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