Product Description
TCH-22,TCH-12,TCH-62 and TCH-42, These alumina can be used in the preparation of ceramic tile, and the content of Alumina can arrive from 90% to 99%(TCH-52,TCH-62L and P72L) .
TCH-22 and TCH-12,crystal size is big,mainly used in spark plug and low sodium structure ceramics,do not have high requirements for fine particles
TCH-62 and TCH-42,Circular crystalline particles and lower specific surface area to ensure that the product is easy to proces.
Widely used in many fields,alumina content can arrive 90% to 98%.
TCH-AM is equal to the low cost version of the P662, specially for the grinding media industry .
TCH-52,Fine particles, while the specific surface area is moderate, has the best balance between the industry leading processing and the final performance. The alumina can be used in the production of 99.8% alumina ceramics, the sintering density can exceed 3.85g/cm3.
TCH-72L Improved by the TCH-72 series, with lower silicon content and the most sophisticated a phase on the market.
While TCH-72L can be used to obtain a high density of sintered at low sintering temperature.
TCH-62L, suitable for the original grain size of the product with a little bit coarse than the TCH-72L.
We can customize and develop the application of the different needs of the alumina, please contact us and let us know your desired product performance
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Low sodium calcined alumina powder |
| TCH-AM | TCH-22 | TCH-12 | TCH-62 | TCH-42 | TCH-52 | TCH-62L | TCH-72L |
| Physical Properties |
| Specific surface area | m2/g | 1 | 0.7 | 0.8 | 1.1 | 1.15 | 1.3 | 3 | 4.4 |
Particle size D50 laser diffraction
(Cilas) | μm | 70 | 80 | 80 | 50 | 50 | 50 | 90 | 90 |
| Chemical Propertities |
| Al2O3 on dry basis | % | 99.8 | 99.85 | 99.85 | 99.85 | 99.85 | 99.85 | 99.9 | 99.9 |
| Na2O total | % | 0.04 | 0.035 | 0.035 | 0.03 | 0.03 | 0.03 | 0.035 | 0.05 |
| CaO | % | 0.035 | 0.015 | 0.015 | 0.02 | 0.02 | 0.055 | 0.015 | 0.015 |
| SiO2 | % | 0.09 | 0.07 | 0.07 | 0.085 | 0.075 | 0.08 | 0.04 | 0.035 |
| Fe2O3 | % | 0.0175 | 0.013 | 0.013 | 0.013 | 0.013 | 0.013 | 0.02 | 0.015 |
| Ceramic properties(R test ) |
| Crystal size D50 (Sedimentation) | μm | 1.8 | 2.2 | 2 | 1.7 | 1.6 | 1.4 | 0.55 | 0.4 |
| Greendensity | g/cm3 | 2.23 | 2.21 | 2.21 | 2.24 | 2.23 | 2.24 | 2.15 | 2.15 |
| Sintered density | g/cm3 | 3.3 | 3.2 | 3.25 | 3.45 | 3.65 | 3.82 | 3.85 | 3.9 |
| LinearShrinkage | % | 12.3 | 11.6 | 12.1 | 13.4 | 15.2 | 16.3 | 17.7 | 18 |
Company Information
Lianyungang Zhong Ao aluminium Co., Ltd (ZALY) is a Sino-Foreign joint venture corporation specializing in manufacturing and marketing calcined alumina,special ceramics and grinding material.
It is located in Import & Export Tariff-free Zone of Lianyungang, one the major China ports importing alumina raw material. The imported raw material from Australia and our rigorous testing methods ensure higher alumina content of our products with fewer impurities than domestic alumina products. Besides, our location makes our offers considerably competitive in the international market.
Committed to establishing complete industry chain in the sector of alumina ceramics, our factory is equipped with advanced manufacturing facilities such as 57.4m-long rotary kiln,high-temperature tunnel kiln, large spray prilling/dried tower, large-CIP machine. And our quality control & environmental management are strictly in line with the system of ISO9001,SGS and ISO14001.
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