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Smelting reduction furnace

A reduction furnace and horizontal furnace body technology, applied in the field of metallurgy, can solve the problems of high FeO content, short lining life, low heat utilization rate, etc., to achieve the effect of increasing reaction rate, expanding molten pool, and prolonging service life

Active Publication Date: 2021-05-25
SHOUGANG CORPORATION
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Problems solved by technology

[0003] After years of theoretical research and industrial experiments, smelting reduction ironmaking processes such as DIOS, HImelt, AusIron, and Romelt have emerged continuously, but they all face unsolvable technical problems such as high FeO content in slag, short furnace lining life, and low heat energy utilization.

Method used

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Embodiment Construction

[0042] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used herein in the description of the multi-sport vehicle body is for the purpose of describing specific embodiments only, and is not intended to limit the present invention. ...

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Abstract

The invention discloses a smelting reduction furnace, which comprises: a horizontal furnace body, including a furnace shell, a water-cooled wall and a furnace lining which are sequentially stacked from the outside to the inside; A slag outlet is provided on the taphole and the other end wall, and a flue is arranged on the peripheral wall of the horizontal furnace body close to the taphole, and the taphole, the slag outlet, and the flue are respectively It communicates with the furnace hearth of the horizontal furnace body; the feeding unit includes a gas injector and a fuel injector, and the gas injector can movably penetrate into the furnace hearth from the top of the surrounding wall of the horizontal furnace body, so The fuel injector can movably penetrate into the furnace from the side of the peripheral wall of the horizontal furnace body. The smelting reduction furnace improves the smelting reduction reaction rate, the utilization rate of secondary combustion heat and the output efficiency of metallic iron, reduces the content of FeO and metallic iron in the discharged slag, and reduces the erosion of FeO in the slag to the furnace lining damage and prolong the service life of the furnace lining.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a smelting reduction furnace. Background technique [0002] In order to overcome the various shortcomings of blast furnace ironmaking, people have studied a variety of non-blast furnace ironmaking methods, including direct reduction method and smelting reduction method. The smelting reduction method does not use coke, which creates conditions for iron and steel plants to achieve clean production and reduce environmental pollution. It is welcomed by the industry, and the research on related processes is getting deeper and deeper. [0003] After years of theoretical research and industrial experiments, smelting reduction ironmaking processes such as DIOS, HImelt, AusIron, and Romelt have emerged continuously, but they all face unsolvable technical problems such as high FeO content in slag, short furnace lining life, and low heat energy utilization. . Contents of the invention...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B11/00
CPCC21B11/00
Inventor 刘文运梁海龙孙健张勇徐萌赵志星龚卫民贾国利张海滨赵满祥赵铁良段伟斌
Owner SHOUGANG CORPORATION
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