The contradiction, such as an increase in the output of steel daily and a decrease in natural resource daily, is intensified gradually with the development of industry. The issue of how to make complete and rational use of steel slag from the production is in urgent need to be solved in the trade of iron and steel. Guodian iron ore of Jinan Iron and Steel Company has made great achievements in comprehensive utilization and development of conventen slag by science and technology as well as the superiority of the wide region the iron ore.
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