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CONTINUOUS SMELTING REDUCTION IRONMAKING METHOD

机译:连续冶炼减少铁制药方法

摘要

A continuous smelting reduction ironmaking method, comprising the following steps: (1) mix iron-containing mineral powder, a reducing agent, and a slagging constituent to obtain mixed powder, and place the mixed powder in a continuous feeding system; (2) place furnace starting material in a reduction furnace (2-1), and heat the furnace starting material to a molten state to form a furnace starting molten pool; (3) lower a stirring paddle into the furnace starting molten pool and start stirring; convey the mixed powder to the reduction furnace (2-1), and blow oxygen-enriched fuel to the reduction furnace (2-1) for heating; (4) perform stirring to enable molten iron and reduction slag to form a slag layer (2-4) and a molten iron layer (2-3); the molten iron enters a cushion tank (3-2); adjust the stirring paddle to the slag layer (2-4) by means of a lifting device, and perform stirring to enable the slag layer (2-4) to form vortexes; and (5) adjust a stirring speed and a conveying amount of the mixed powder, so that the molten iron is continuously and stably discharged; and adjust the position of the stirring paddle, the stirring speed, and the conveying amount of the mixed powder, so that the molten iron and the reduction slag are respectively continuously discharged. The method is simple in process, low in investment, energy-saving, environment-friendly, and low in cost, has higher economic value, and is an efficient non-blast furnace ironmaking technology.
机译:一种连续的冶炼还原炼铁方法,包括以下步骤:(1)混合含铁的矿物粉末,还原剂和粘连的成分,得到混合粉末,并将混合粉末置于连续进料系统中; (2)将炉原料放置在还原炉(2-1)中,并将炉原料加热到熔融状态以形成炉子起始熔池; (3)将搅拌桨叶放入炉中,起始熔池并开始搅拌;将混合粉末输送到还原炉(2-1),并将富氧燃料吹到还原炉(2-1)中加热; (4)进行搅拌以使熔融铁和还原炉渣能够形成渣层(2-4)和铁水层(2-3);熔铁进入垫子罐(3-2);通过提升装置将搅拌桨叶(2-4)调节到渣层(2-4),并进行搅拌以使炉渣层(2-4)形成涡旋; (5)调节混合粉末的搅拌速度和输送量,使熔融铁连续稳定地排出;并调节搅拌桨的位置,搅拌速度和混合粉末的输送量,使得铁水和减少炉渣分别连续排出。该方法在工艺方面简单,投资低,节能,环保,成本低,经济价值更高,是一种高效的非高炉炼铁技术。

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