How much bauxite does 1 ton of alumina consume?

First, the current situation of domestic supply and demand of bauxite:

HCM Machinery bauxite mill learned that China's bauxite resources are relatively scarce, and the static guarantee period is only 10 years. Domestic resources are inherently insufficient, on the other hand, alumina production capacity continues to expand. With the large-scale increase in the demand for bauxite, high-quality Indonesian bauxite has become the object of domestic enterprises. China's dependence on bauxite is as high as 60%. Among them, bauxite from Indonesia accounts for more than 70%. Then according to the latest media reports on the Internet, Indonesia said that the export ban of bauxite ore will take effect on June 10, Indonesia's export ban of bauxite ore has no impact on China's bauxite preparation of alumina? Some insiders believe that due to the long window period of the ban, the relevant domestic alumina enterprises have basically done a good job in response to measures, and in recent years, the dependence of Chinese enterprises on Indonesia's bauxite has been greatly reduced, even if the ban comes as scheduled, it is "not enough to be afraid".

Second, bauxite alumina preparation process:

China's total alumina production capacity reached 45.32 million tons, accounting for 85.4% and 41.3% of the total production capacity in Asia and the world, respectively. So in the production of alumina from bauxite, how many tons of bauxite do you need to consume for 1 ton of alumina? A ton of alumina consumes 1.85 tons to 2.6 tons of bauxite, that is, each ton of bauxite can be refined 0.38-0.54 tons of alumina. Bauxite alumina production process: the production of alumina from bauxite can be roughly divided into four categories, namely, alkali method, acid method, acid-base combination method and thermal method. But almost all of what is currently used in industrial production belongs to the alkali process. Among the four alumina production methods, the alkali process and the Bayer process are the most widely used.

Third, bauxite preparation alumina mill how to select equipment?

Bauxite also known as bauxite or bauxite, the main component is alumina, containing impurities of hydrated alumina, is an earth-like mineral. Mainly used for aluminum smelting. After grinding to fine powder form, bauxite can be widely used in casting, aluminum smelting, cement, refractory brick, castable and other industries. HCM Machinery ore grinding machine, founded in 1991, has independently developed and produced ore grinding machine for more than 30 years, and the mill has won more than 100 technical patents. Not only can grinding bauxite, but also grinding limestone, calcite, talc, dolomite, quartz, bauxite, marble, feldspar, barite, phosphate rock, coal mine, clay, graphite, kaolin, wollite, lime, bentonite and other Mohs hardness below 7, humidity within 6% of a variety of non-flammable and explosive materials. In the process of bauxite preparation of alumina, grinding bauxite can choose HCM Machinery HC super large pendulum Raymond mill, vertical mill, ultra-fine mill, fineness range of 80-2500 mesh, grinding machine output of up to hundreds of tons. Consult bauxite alumina production line equipment quotation can leave a message consultation:mkt@hcmilling.com