METHOD FOR PRODUCING PIG IRON AND BLAST FURNACE FACILITY USING SAME

摘要

This blast furnace facility is provided with: a blast furnace main body (110); starting material charging means (111-113) that charge a starting material (1) containing iron ore and coke into the interior of the blast furnace main body (110) from the apex thereof; hot airflow blow-in means (114, 115) that blows in a hot airflow (101) from a tuyere to the interior of the blast furnace main body (110); and blast-furnace-blow-in charcoal supply means (120-129) that blow in blast-furnace-blow-in charcoal (11) from the tuyere to the interior of the blast furnace main body (110). The blast-furnace-blow-in charcoal supply means (120-129) blow in a blast-furnace-blow-in charcoal (11) having an oxygen atom content (on a dry basis) of 10-20 wt % and an average pore size of 10-50 nm.

主权项

1. A method of manufacturing pig iron, comprising: charging a raw material containing iron ore and coke into a blast furnace main unit from a top thereof and blowing hot air and blast furnace injection coal into the blast furnace main unit from a tuyere thereof to thereby manufacture pig iron from the iron ore in the raw material, wherein
the blast furnace injection coal has an oxygen atom content ratio (dry base) of between 10 and 20% by weight and an average pore size of between 10 and 50 nm.