[China Aluminum Network] Bauxite is a mixture of monohydrated aluminous (Al2O3·H2O) and gibbsite (Al2O3·3H2O) and symbiotic with other minerals such as H2O (Al2O3·2SiO2·2H2O), etc. . China's bauxite is mostly of the boehmite-high H-type, which is characterized by high Al2O3 content, high SiO2, and low Fe2O3. It belongs to insoluble bauxite and can not be directly refined with advanced Bayer alumina, but it is Suitable for fire-resistant raw materials. Due to the cause of deposits and geological conditions, China's bauxite mines are often in the same ore zone and in the same zone. The ore grades are very different, and the occurrence is "chicken mines," which is difficult to extract and has low comprehensive utilization.

The classification of bauxite ore and the removal of harmful impurities (such as Fe2O3, K2O, Na2O, MgO, CaO, etc.) directly affect the type and quality of refractory materials. It should be pointed out that China's current "bauxite ore technical conditions" YB/T5057-1993 (2005) only stipulates the alumina-silica ratio (Al2O3: SiO2), Al2O3, Fe2O3 quality indicators for various grades of bauxite ores ( %) is suitable for the production of bauxite consisting of hydrated alumina and silica, such as alumina, corundum abrasives, and high-aluminum cement. However, it is difficult for the exploration of refractory refractory bauxite. In order to meet the requirements of different grades of refractory materials, bauxite needs to be graded to control the range of Al2O3 content in order to stabilize the chemical composition and mineral composition. This is a prerequisite for the manufacture of high-quality refractory materials. The foreign standards also require the fluctuating range of Al2O3 content in refractory raw materials to be controlled from 1% to 2%. However, China's refractory raw materials have never reached this target, which is often as high as 5% to 10%, which considerably restricts the quality of refractory products in China. The improvement is also one of the reasons for the low service life of China's high-alumina linings.

1. Technical standard: BS EN 10202, DIN EN 10203, GB/T2520 , JIS G3303
2. Steel type: MR, SPCC
3. Thickness: 0.115 - 0.50 mm
4. Roll width:  600 - 1050 mm
Tin Coating: ordinary 2.8 or 2.8g and 5.6g or 5.6g, we can produce according to customer's requests
Widely apply to industrial packagings and food packagings.

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