Highlights: Study of Influence on the Processes of Individual Blast Parameters

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-The main factor responsible for the decrease in coke consumption by increasing the natural gas is decrease in the direct reduction of iron (rd).

-When rd < 20% , the differential equivalent of coke replacement falls from 0.9-1.0 to 0.2-0.4 kg/m3.

-The influence of coke-oven gas is analogous when the supply ratio of the coke-oven gas and natural gas is 1: 2.

-The main factor that determined the substitution of coke pulverized coal fuel is the heat of combustion of coal-dust.

-Predominant over consumption of coke in enrichment of blast oxygen is the reduction of heat nitrogen.

Article:

Substitution of Coke and Energy Saving in Blast Furnaces. Part 3. Study of Influence on the Processes of Individual Blast Parameters