China Aluminum Network reports that the availability of bauxite resources in China is becoming increasingly limited, making it more urgent than ever to implement effective strategies to improve resource utilization. Over decades of industrial experience, it has become clear that developing advanced homogenization technologies is essential. By leveraging scientific methods and modern equipment, a large amount of low-grade and mixed-grade bauxite can be processed efficiently to produce high-performance alumina-based homogenized materials. Among these, mullite homogenizing materials are particularly important, with qualified enterprises playing a key role in the process. Techniques such as flotation, purification, or electrofusion can help reduce impurities in raw materials, while adding small amounts of additives can enhance the microstructure and overall performance of the material. This approach could potentially increase China’s bauxite utilization rate from the current 20% to over 80%, paving the way for sustainable development. The development of homogenized products not only improves the quality and value of bauxite but also supports large-scale mechanized mining and the establishment of modern production systems tailored to local resource characteristics. As a result, the advancement of bauxite homogenization materials holds significant practical value and offers promising market potential. The formal research into bauxite homogenization materials in China began in the 1970s during the Yangquan project. Since then, it has been included as a key topic in several national planning initiatives, laying a solid foundation for both research and industrial production. In recent years, laboratory studies by various scholars have demonstrated that mullite-based homogenized materials derived from bauxite exhibit outstanding high-temperature mechanical properties, including excellent high-temperature fracture strength. When the ratio of corundum to mullite is 75:25 or 25:75, the performance is particularly strong. Additionally, the high-temperature creep resistance of these materials ranks among the best, with certain grades showing superior results. It has been found that higher Al₂O₃ content in sintered high-alumina bauxite does not necessarily mean better performance, which further supports the long-term theoretical basis for bauxite material development in China. These findings reinforce the importance of continued innovation and investment in this field.
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1. With extremely high hardness, usually between 60-66 HRC, it can effectively resist wear and grinding and extend service life.
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