Steps to reduce greenhouse emission gases (CO_2) is increasingly becoming a matter of priority for the industry, particularly for the iron & steel industry, which is the largest consumer of the world's generated energy on a global basis. This paper outlines the principal factors necessary for evaluating CO_2 emission rates as the basis for comparing the net CO. emission figures for different iron & steel production routes. Calculations show that net CO_2 emissions for COREX~?-based production routes offer favorable results in comparison with conventional iron and steel production routes, depending on the respective nation-wide specific CO_2 emission value. The topics presented in this paper in relationship to the concerns of the iron & steelmaking industry are rarely dealt with in metallurgicaljournals, however, are becoming increasingly important because of environmental, political and especially economical reasons.
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