Since the 1850s, with the emergence of Bessemer converters flat furnaces the rise of large-scale steel manufacturing, the civilization progress of the mid-range magnesia society has accelerated significantly. Especially since the 20th century, the vigorous development of the steel industry has become an important material basis for the progress of global economy social civilization. In the foreseeable time frame, steel is still a very important material in the world. The comprehensive excellent performance of steel materials makes it an irreplaceable material in major basic industries infrastructure. Because of its cost competitiveness, high reserve of raw materials, easy mining, easy processing, good recyclability, steel will still be the main global basic raw material.