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Furnace halt residue iron outlet method for middle and large-sized blast furnaces

A technology of residual iron and blast furnace, which is applied in the direction of blast furnace, blast furnace details, blast furnace parts, etc., to achieve the effect of reducing manpower and quickly shutting down the furnace

Active Publication Date: 2013-06-12
PANGANG GRP PANZHIHUA STEEL & VANADIUM
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Problems solved by technology

[0005] The present invention aims to solve the problems existing in the blast furnace for smelting high-titanium vanadium-titanium magnetite during shutdown. Therefore, the invention provides a blast furnace suitable for smelting high-titanium vanadium-titanium magnetite that can Effective way to get rid of residual iron

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  • Furnace halt residue iron outlet method for middle and large-sized blast furnaces
  • Furnace halt residue iron outlet method for middle and large-sized blast furnaces
  • Furnace halt residue iron outlet method for middle and large-sized blast furnaces

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Embodiment Construction

[0014] The present invention can shorten the total shutdown time by 2 hours by adopting two residual iron ports when the medium and large blast furnace is shut down, and the deposits in the hearth are greatly reduced after the shutdown (mainly condensed iron) reduced), and the amount of residual iron produced increased, the actual iron produced was closer to the theoretical iron produced, and the time for cleaning the deposits in the hearth after the furnace was shut down was shortened from 7 days to 3 to 4 days. Shorten the maintenance period to create favorable conditions. Here, it should be pointed out that the residual iron port refers to the outlet used to discharge residual iron on the blast furnace.

[0015] The following will refer to figure 1 Describe in detail the method for shutting down a medium-to-large blast furnace to remove residual iron according to the present invention. figure 1 It is a schematic diagram of determining the position of the residual iron gat...

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Abstract

The invention discloses a furnace halt residue iron outlet method for middle and large-sized blast furnaces, which comprises the following steps that: positions of double residue iron openings are determined at one side near an iron way; the residue iron openings and an iron outlet groove are made during the advanced wind stop; an iron tank used for accommodating the residue iron is matched and arranged on the iron way at the same side as the residue iron openings; and during the residue iron outlet, firstly, the residue iron opening in a high position is burnt to an open state through oxygen, and when the iron flow becomes small, the residue iron opening in a lower scale height position is burnt to an open state for residue iron outlet. When the method is adopted for furnace halt residueiron outlet, the safe and fast furnace halt can be realized, in addition, slag iron mixtures remained in a furnace cylinder are greatly reduced after the furnace halt, and the labor, material and money consumption is reduced for cleaning the residue in the furnace cylinder.

Description

technical field [0001] The invention belongs to the technical field of blast furnace ironmaking. Specifically, the invention relates to a method for shutting down a large blast furnace suitable for smelting high-titanium vanadium-titanium magnetite and a large blast furnace for smelting ordinary ore. method. Background technique [0002] For medium and large blast furnace ironmaking, whether it is smelting ordinary ore or smelting vanadium-titanium magnetite, after a generation of furnace age, the blast furnace is at the end of the furnace age and the furnace body is aging. The aging of the blast furnace body is usually manifested as: serious damage to the cooling equipment, multiple cracks in the furnace skin, frequent redness of the furnace skin, difficulty in increasing the depth of the tap hole, a decrease in the pass rate of the tap hole, and an increase in the furnace bottom temperature, all of which make the blast furnace equipment The normal operation rate is reduce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B7/12
CPCY02P10/20
Inventor 杜斯宏宋剑雷电张志刚张远祥李刚曾华锋赵东辉张海军
Owner PANGANG GRP PANZHIHUA STEEL & VANADIUM
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