my country’s alumina production is growing rapidly and production raw materials are highly dependent on imports

The content of aluminum in the earth’s crust is second only to oxygen and silicon. It is the most abundant metal element in the earth’s crust, with a content of about 8%. It mainly exists in the form of bauxite, cryolite, and aluminosilicate ores. Aluminum oxide is an inorganic compound, a white crystalline powder, soluble…