Transformation method of device for treating molten iron backflow

A technology of molten iron and mould, which is applied in the direction of waste gas treatment, discharge device, sustainable manufacturing/processing, etc. It can solve the problems of hidden danger of blasting in slag ditch, small drop of slag skimmer, burnt iron hole, etc., and achieves increased solidification speed, reduced Impact and erosion strength, eliminate the effect of molten iron recharge

Pending Publication Date: 2022-06-24
SHANDONG LAIGANG YONGFENG STEEL & IRON
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problems in the prior art that the hot metal is recharged and burned out, and the drop of the skimmer is small, and when the slag flows into the slag ditch, it is easy to be mixed with molten iron, resulting in the hidden danger of blasting in the slag ditch, and a method for treating molten iron is proposed Reflow device modification method

Method used

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Embodiment Construction

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0029] A device modification method for processing molten iron reflux, comprising the following steps:

[0030] S1: Use tools to clean up the residual material in the main ditch and the skimmer;

[0031] S2: Expand the width of the tunnel on both sides of the main ditch of the skimmer, increase the width by 30cm and increase the depth by 20cm, and trim the surface of the tunnel to keep the surface level;

[0032] S3: According to the specific size, remake the steel large and small well aisle molds, and reserve air holes on the steel molds in advance as the holes for the internal water and air discharge of the refractory material to prevent the refractory material from...

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Abstract

The invention relates to the technical field of metallurgical enterprise blast furnace production slag iron treatment, and discloses a transformation method of a device for treating molten iron backflow, which comprises the following steps: S1, cleaning residual materials in a main channel and a skimmer by using a tool; s2, the widths of the pits on the two sides of the main channel of the skimmer are increased by 30-32 cm, and the depths are increased by 18-20 cm; s3, according to the specific size, steel large and small well passage molds are manufactured again; and S4, the steel mold is installed, and the skimmer is dropped by 10-12 cm. According to the invention, the molten iron can safely and smoothly pass through, the phenomenon of molten iron recharge is eliminated, the phenomenon that the molten iron flows into the slag runner to cause blasting hidden danger is avoided, the impact and erosion strength of the wall body of the small well of the skimmer is reduced, and the molten iron leakage accident caused by local burnthrough of the iron storage device is avoided.

Description

technical field [0001] The invention relates to the technical field of slag iron processing in blast furnace production of metallurgical enterprises, in particular to a device reforming method for processing molten iron backflow. Background technique [0002] The working state of the skimmer in blast furnace tapping plays a vital role. The skimmer is composed of the front trench (large well), sand dam, gate, ditch head, passage hole, small well, sand hole, main iron The basic working principle is to use the different proportions of slag and iron to separate the slag and iron. The slag and molten iron flowing from the iron mouth flow to the slag skimmer through the main channel. Due to the large proportion of molten iron, it sinks below, while the proportion of molten slag is small, and the phenomenon of slag and iron layering appears on the top. Under the action of the ditch head at the exit of the slag skimmer, the small pits and wells connected by the pass-through are fil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B7/14C21B7/04C04B35/14C04B35/66
CPCC21B7/14C21B7/04C04B35/14C04B35/66C21B2100/80C21B2100/66C04B2235/3463C04B2235/3865C04B2235/3418C04B2235/349C04B2235/3217C04B2235/405
Inventor 张旭左俊杰曾凡辉武卫东刘大维王德慧张立军
Owner SHANDONG LAIGANG YONGFENG STEEL & IRON
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