PULVERISED COAL FOR BLAST-FURNACE MELTING Russian patent published in 2015 - IPC C10L5/00 C10B57/06 C10B53/00 

FIELD: metallurgy.

SUBSTANCE: invention describes the pulverised coal for the blast-furnace melting of the carbon containing material, at that the carbon containing material includes 50-55 wt % of low ash and low sulphur fine ground coal with low output of the volatile substances, 40-45 wt % of fine dispersed semicoke produced at 600-650°C from low ash and low sulphur brown coals, and 5-10 wt % of dust wastes of the dry extinguishing of the metallurgical coke. Use of the materials with low output of the volatile substances improves ecological parameters of the cast iron casting in the blast-furnaces.

EFFECT: increased intensive heat generation during oxidating due to high chemical activity of the brown coal semicoke, ensures achievement of the necessary coefficient of coke replacement at lower flowrate of pulverised coal, more rational utilisation of high carbon wastes of the dry extinguishing of the metallurgical coke.

2 dwg, 2 tbl, 3 ex