Industrial development status quo of alumina - Appropriate chemical industry

it's important to alumina oxide, aluminum content in the earth's crust is second only to oxygen and silicon, is located in the third place, is the world's first big nonferrous metal, its production and consumption is second only to iron and steel, widely used in transportation, packaging, construction, electronics and manufacturing industries, is in the national economy has a strategic position of metal materials.

at present, the alumina is still the main material in the manufacture of the aluminium, every tons of production need to consume nearly two tons of alumina, aluminium and alumina is electronic, petroleum, chemical, refractory material and an important and indispensable raw materials such as ceramic industry. The current production of alumina the vast majority of bauxite was used as raw material, the dosage of market is very large.

bauxite resources is very abundant in the world, more than 40 countries throughout the world. According to the mining bureau estimated that bauxite resources in the world is about 550 to 75 billion tons. From the point of geographic distribution, two countries of guinea and Australia reserves accounted for about 50% of the world's reserve, Brazil, Jamaica, Guyana and suriname, the storage of the four countries accounted for about 26%, the world's production of bauxite resources and although mainly concentrated in Oceania, Latin America and Africa, but in fact, the ownership of the bauxite is in North America and Western Europe and other industrial powers hands.

the alumina minerals in China and abroad, our country's bauxite belongs to high aluminum, high silicon and low iron of refractory ore, al-si ratio is low. Besides pingguo, a few mining area in our country, the majority of the bauxite iron oxide content below 5%. In the past two years, as the foreign alumina market on the impact of the alumina industry in China and alumina factory in China is facing a situation is increasingly serious.

factory according to the properties of alumina by dressing bayer process of alumina production has achieved good economic benefits, bauxite has been the best use of.