A Brief Introduction To The Types Of EAF
The EU steel industry regards increasing the proportion of scrap steel in the steelmaking process and
reducing the demand for molten iron as the most effective means of reducing CO2 emissions,
and its iron-steel ratio has dropped to about 0.5.
At present, the scrap ratio of converter steelmaking in my country is about 8%,
while the scrap ratio of converter steel in European and American steel mills is mostly higher than 20%.
Since the beginning of this year, due to the severe crackdown on strip steel, the price of scrap iron and
steel in my country has plummeted. No matter from the perspective of reducing costs or reducing
carbon emissions, converters should eat more scrap steel. Therefore, it is necessary to solve technical
problems such as increasing the silicon content of molten iron into the furnace, preheating scrap steel
in the converter furnace, combined blowing with bottom oxygen blowing, high-efficiency secondary
combustion of the converter, conflicts between eating more scrap steel in the converter and splashing
slag to protect the furnace, and strive to convert the converter scrap steel Ratio increased to 15-25%.
The electric arc furnace uses steel scrap as the main raw material, which has the advantages of short
process, low carbon emission and less pollution. The proportion of electric furnace steel in the
United States and Italy reaches 50-60%, and the proportion of electric furnace steel in Japan,
South Korea and Germany reaches 25-30%. Due to problems such as electricity prices and scrap steel
prices, the proportion of electric furnace steel in my country is only 8-9%, and electric arc furnaces
use a large amount of molten iron. As the accumulation of scrap steel increases year by year,
it is estimated that the supply of scrap steel will exceed 300 million tons around 2030, and the electric
arc furnace process will develop rapidly. Waste heat recovery, ecological electric arc furnace and other
technologies and equipment.
