Bauxite is also called bauxite, bauxite, the main components are gibbsite and kaolinite, as well as some oxides of iron, titanium, calcium and other elements. Bauxite is a clay-like mineral that appears white or off-white. Because bauxite in nature contains many impurities, and some bauxite are associated with kaolinite, resulting in different standards for bauxite in various countries. However, China considers that the ratio of aluminum to silicon is greater than 2.5, which is the available bauxite ore. The main constituent of bauxite in China is mostly gibbsite.
Aluminium is the most abundant metal element in the earth's crust, so there is no doubt that it is rich in bauxite. China is one of the four major bauxite countries, and the remaining three are Brazil, Guinea, and Australia. In addition, China is still one of the only countries that can produce high-alumina bauxite for refractories. Bauxite is distributed in 18 provinces in China, of which 72 are large-scale producing areas, mainly distributed in Shanxi, Shandong, Hebei, Henan, Guizhou, Sichuan, Guangxi, Liaoning, and Hunan.
Q: What about low-grade bauxite?
Answer: The bauxite is purified after grinding and washing to increase the aluminum content. Later applied to aluminum smelting also to accelerate the process of aluminum refining.
Q: Why use a high-pressure mill for bauxite crushing?
Answer: The high-pressure mill has an objective output, strong stability, high sieving rate, and wide application. It is a high-efficiency equipment suitable for various types of mineral grinding. The bauxite clinker after firing mostly contains corundum with a Mohs hardness of 9, and the requirements for the performance of the mill are particularly high. Shanghai Jianye YGM4528 high-pressure mill is often used in the grinding of white corundum, so it can be used to process bauxite.
- Recommended model: High-pressure milling machine Equipment features: Wide grinding range, can it be difficult to grind materials with high hardness.
- Recommended model: PE250 * 400 Jaw Crusher Features: Used with a pulverizer
- Recommended model: Ultra-fine powder mill Features: Suitable for the preparation of 325-2500 mesh fine powder, it is currently effective fine powder equipment.
- Recommended model: Integrated suspension roller mill Features: Built-in reducer, simple installation, large grinding amount
High-quality bauxite, Al2O3> 85%, the main component is gibbsite. After firing at a high temperature of 1400-1450 ° C, the fired bauxite needs to be crushed, ground, and washed, and the powder or sanding material is screened out, and then bagged. The main mineral composition of the bauxite clinker after calcination is corundum and mullite. In the process of crushing and grinding, Shanghai Jianye Heavy Industry Co., Ltd. believes that jaw crushers can be used in combination with Raymond mill or high-pressure mill to refine them. Raymond mill is a long-term powder equipment. A regular customer of this kind of powder production, the high-pressure mill is an efficient grinding equipment designed and improved by our company based on Raymond mill. It can process bauxite to 100-400 mesh, and promote its application in refractory bricks, precision Manufacturing, machinery industry, aluminum chloride water purification agent, electrolytic aluminum and other industries.
For low-grade bauxite, the main component is kaolinite, followed by gibbsite. This level of bauxite is mostly used for aluminum smelting. We can use a high-pressure mill for selective grinding of bauxite. When the grinding fineness is -0.074mm, which accounts for about 50%, selective grinding can achieve the purpose of aluminum and silicon separation within a certain particle size range. Coarse-grained (+ 0.106mm) qualified products can achieve a recovery rate of more than 41%. Therefore, it is used as a typical treatment method for low-quality bauxite in tailings.
Q: Which is better to use high-pressure mill and Raymond mill as kaolin mill?
A: Raymond mill is a long-established equipment that is still in use today. The high-pressure mill is exactly the improved equipment of the Raymond mill. A high-pressure spring has been added. The pressure has improved the performance of the mill. Today, the high-pressure mill has its own grid system, and the output of equipment has been continuously increased. The pass rate has inherited the excellent characteristics of the Raymond mill. The output has reached more than 10 tons per hour. Therefore, both of them can be used in kaolin grinding, but the high-pressure grinding performance is more excellent.
Processing use: bauxite
Target hourly output: 10 tons per hour
Recommended models: 2 4528 mills
Processing use: industrial powder
Target hourly output: 1 ton
Recommended model: 8514 mill