氧化铝鹅卵石用户主要是陶瓷的ries. At present, there are data showing that using cobblestone (natural cobblestone) + 10% alumina cobblestone (φ35MM) to grind the slime, compared with cobblestone only, it can shorten the grinding time by 15%. ; Use medium aluminum ball + 30% high aluminum ball (φ35MM) to grind the slime. Compared with using only medium aluminum ball, it can shorten the grinding time by about 30%. Simply calculating based on the saved electricity cost, it can be used for about 2 years. The high cost of aluminum balls "save" back. According to reports from individual manufacturers, all high-aluminum balls are used to replace the original natural ball stones, and the output is about three times that of the original. Grinding raw materials with high aluminum balls can not only save electricity costs, increase output, but also improve the efficiency of machinery use, and have a great protection effect on mechanical equipment.
In addition to the ceramic industry, quartz, chemical and other industries are also trying to use alumina ball stone for production. Among them, the quartz factory is mainly used for the production of silicon fine powder. Practice has proved that, for example, the production of 325 mesh silicon fine powder, the use of high aluminum balls instead of quartz ball grinding can significantly improve the output and product quality, such as whiteness, uniformity, etc., and because of the loss rate Without the quartz ball, the labor and time cost of adding the ball stone is saved.
The data shows that China is the world's largest alumina producer. In 2010, the global alumina output was 56.355 million tons, and China's alumina output reached 28.955 million tons, a year-on-year increase of 20.14%, accounting for 51.38% of the world's total. In 2010, China's apparent consumption of alumina reached 33.21 million tons, with an annual growth rate of 14.05%, net imports of 4.26 million tons, bauxite imports of 30.19 million tons, external dependence of 39.71%, alumina external dependence Up to 47.26%.
With the rapid development of China's electrolytic aluminum, ceramics, medicine, electronics, machinery and other industries, there is still a large room for growth in the market's demand for alumina, and alumina production will continue to grow. Combined with China's alumina production data from 2005 to 2010, it is expected that China's alumina production will reach 33 million tons in 2011, with a growth rate of 14%. In 2012, it will continue to grow on the basis of 2011, with output exceeding 38 million tons.