Method of manufacturing direct reduction iron and reduction firing apparatus

摘要

A method of manufacturing direct reduction iron and a reduction firing apparatus. The apparatus has a reduction furnace including a left chamber, a right chamber, a material containing device, a step mechanism, a slag distributing device, a charging device, heating burners, a fume extraction path, a charging device, a material receiving tank and a slag discharging path. The method includes the following steps: distributing and charging the slag in the material containing device; carrying and sending the material containing device through a preheating station, a heating station and a reduction station sequentially. Meanwhile, heating the material to be reduced by a combustion of fuel with the heating burners; discharging the reduced material into the material receiving tank; placing the material device from which the material is discharged into the feeding side of the other chamber, then a next work circulation begins.

主权项

1. A method of manufacturing direct reduction iron, which comprises the following steps:
(1) sending a material containing device into a feeding side of one chamber of a dual-chamber stepping furnace using a discharging device; (2) transferring the material containing device to a slag distributing station using a stepping mechanism of the dual-chamber stepping furnace so as to uniformly distribute a layer of slag on grate bars of the material containing device using a slag distributing device; (3) moving the material containing device forward to a charging station so as to fill the material containing device with pellet material to be heated and reduced; (4) moving the material containing device forward through a preheating station, a heating station and a reduction station step by step, heating and reducing the pellet material by flames of heating burners, wherein fumes of the flames penetrate through material layers and the grate bars of the material containing device to be pumped out through a fume extraction path at a bottom of the chamber; (5) gradually moving the material containing device forward to reach a discharging port of the stepping furnace, opening a furnace gate to withdraw the material containing device from the furnace using a discharging device, closing the furnace gate, and turning over the material containing device to pour the reduced pellet material into a material receiving tank having a sealing cap; and (6) turning the material containing device back and moving the material containing device laterally by the discharging device so as to transfer the material containing device into a feeding side of another parallel chamber of the dual-chamber stepping furnace, and repeating the above method.