A METHOD FOR SMELTING LOW-PHOSPHOROUS FERROMANGANESE IN THE BLAST FURNACE

摘要

A method for smelting low-phosphorous ferromanganese from phosphorous ores in the blast furnace, in which method manganese- containing raw material, solid reducer are loaded into the blast-furnace, and hot wind is supplied. The smelting ferromanganese is performed in two processings, at that in the first processing the amount of reducer, temperature and consumption of wind, and also slag basis are specified as recalculated of reducing of 8-10 % of manganese and producing the low-phosphorous ferromanganese slag as basic product. During the second processing the slag of the first processing is loaded into the blast-furnace furnace fully or partly as the manganese- containing raw material, at that the temperature of wind is increased by 15-20 %, and slag basis is increased by 8-10 times.