yixing xinwei leeshing refractory materials co.,Ltd
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Standard Grade Magnesia Alumina Spinel Brick for cement kiln
Description:
This magnesia alumina sponel brick has been designed for the application in the lower and upper transition zones. The outstanding property with the reasonable price/quality ration has gain great reputation in Japan, Korea, Europe and USA. Based on the raw material of purest selected magnesia and fused alumina spinel, they have the excellent resistance to alkali salt attack and clinker infiltration combined with high structural flexibility and longer service life (about 3 years) under high temperature.
Feature:
• Outstanding resistance to chemical attack.
• Outstanding thermal-shock resistance Highest refractoriness.
• Excellent abrasion resistance.
• Excellent performance under thermal and mechanical loads.
Application:
Transition zone of cement rotary kiln.
Chemical composition and physical properterties
| Chemical Composition | UNIT | |
| MgO | % | 85-87 |
| Al2O3 | % | 9-11 |
| SiO2 | % | 0.65 |
| Fe2O3 | % | 0.6 |
| CaO | % | 1.4 |
| Physical Properties | UNIT | |
| Bulk Density | g/cm3 | 2.9-3.0 |
| Apparent Porosity | % | 16 |
| Thermal Shock Resistance - in air at 950 °C | cycle | 100 |
| Refractoriness Under Load | °C | 1700 |
| Thermal Expansion - at 1000 °C | % | 1.26 |
| Cold Crushing Strength | MPa | 65 |
| Modulus of Rupture-at1400ºC 0.5h | Mpa | 1.45 |
| Thermal Conductivity - at 300 °C | W/mK | 4.0 |
| Note: The above datas are the representative average value measured in accordance with the test methods for general purpose and vary with the fluctuations of normal production conditions.These datas are provided as a technical service,sometimes may be adjusted, so they should not be regarded as the product index. | ||
Our company
China Rare Earth Holdings Co., Ltd. is a large cross-regional company with its headquarter registered in Hong Kong. It is a company listed on the Hong Kong Stock Exchange (name: China Rare Earth, code: 0769). Yixing Xinweilicheng Refractories Co., Ltd. is a wholly-owned subsidiary of China Rare Earth Holdings Co., Ltd. and one of the pillar industries of the holding company. One integrated enterprise.The company covers an area of 360,000 square meters and a building area of 240,000 square meters. It has more than 1,000 employees, of which scientific and technological personnel account for 30% of the total number of employees.
Over the years, the company has closely followed the development pace and trend of the international and domestic refractory material markets, invested heavily in expansion and reconstruction, adjusted the industrial structure, and constantly pursued and surpassed development. With the support and help of many close partners at home and abroad, and the sincere unity and hard work of all employees, the company has become one of the important bases for domestic production of medium and refractory materials.
Refractory products are used extensively in heat-treatment facilities for petrochemical, steel metallurgy, non-ferrous metallurgy, glass, construction materials, chemical fertiliser and ceramics industries. Rare earth products of the Group are mainly exported to the United States of America, Japan, Europe and Korea, and its refractory products are mainly for domestic sales and export to Japan.
The Group has a research and development centre that focus on improving existing products and developing new products. Building and maintaining relationships with clients and exploring new businesses are the responsibility of its talented sales and marketing department. Concerning the environmental protection as well as the market needs, the Group will continue to develop environmental friendly and high value-added products.