Method for directly smelting iron by blast furnace with fine iron powder

• Main Author: KANG SHUXIN
• Format: Patent
• Language: Chinese; English
• Published: 17.08.2018
• Subjects: CHEMISTRY; MANUFACTURE OF IRON OR STEEL; METALLURGY; METALLURGY OF IRON

The invention relates to the technical field of metallurgy, and particularly discloses a method for directly smelting iron by a blast furnace with fine iron powder. The method comprises the followingsteps that the fine iron powder is mixed with a flux, and an ore material is obtained; the ore material and coke are distributed in a distributing device in an annular alternate distributing mode; anda blast system consisting of three groups of blast systems is used for smelting burden in the blast furnace. Chemical energy and heat of coal gas are fully utilized, so that the coke ratio is obviously reduced, and the yield of iron is higher. 本发明涉及冶金技术领域，具体公开种铁精粉直接高炉炼铁的方法。所述方法，包括如下步骤：将铁精粉与熔剂进行混料处理，得到矿石料；将所述矿石料与焦炭于布料器中以环形交替布料的方式进行布料；采用由三组鼓风系统组成的鼓风体系对高炉中的炉料进行冶炼。本发明提供的铁精粉直接高炉炼铁的方法，煤气的化学能和热量得到了充分利用，使得焦比得到明显降低，且铁的收得率较高。