A device and system for reducing the loss of hot stream of molten iron during tapping of a blast furnace

By removing dust and drawing air from both sides of the molten iron during tapping in the blast furnace, and controlling the airflow with an air volume regulating valve, the problem of severe heat loss in the molten iron was solved, achieving the effect of reducing heat loss and improving the production environment, which is in line with the concept of green production.

CN224513530UActive Publication Date: 2026-07-17ANGANG STEEL CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ANGANG STEEL CO LTD
Filing Date
2025-06-30
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

During the tapping process in a blast furnace, the heat loss of molten iron is significant, and existing technologies are unable to effectively reduce it, resulting in a harsh environment and failing to meet the principles of green production.

Method used

Dust removal pipes are used to remove dust and draw air from both sides of the molten iron, reducing the convective heat loss between the dust removal airflow and the molten iron. The airflow is controlled by an air volume regulating valve to prevent the airflow from enveloping the molten iron. Combined with the dust removal system design, the dust removal effect and the production environment are improved.

Benefits of technology

It effectively reduces heat loss during blast furnace tapping, increases molten iron temperature, improves the production environment, and achieves the goals of green, environmentally friendly, and energy-saving practices.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224513530U_ABST
    Figure CN224513530U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of energy -conserving of thermal engineering provides a device and system that can reduce the loss of hot flow of molten iron during the tapping of blast furnace, wherein, a device that can reduce the loss of hot flow of molten iron during the tapping of blast furnace, including dust removal pipeline, dust removal pipeline can be installed on the first side wall or second side wall, when dust removal pipeline is installed on the first side wall or second side wall, one end of dust removal pipeline is located between the first side wall and the second side wall and is connected on the dust removal system, the other end of dust removal pipeline is located between the first side wall and the second side wall and is located between the lower edge of blast furnace platform and the first molten iron tank or between the lower edge of blast furnace platform and the second molten iron tank, a system that can reduce the loss of hot flow of molten iron during the tapping of blast furnace is also disclosed, and the device that can reduce the loss of hot flow of molten iron during the tapping of blast furnace is applied. The utility model can reduce the convection heat transfer loss during the tapping of blast furnace under the premise of guaranteeing the dust removal effect.
Need to check novelty before this filing date? Find Prior Art

Claims

1. A device for reducing heat loss during tapping of molten iron in a blast furnace, characterized in that, Including dust collection ducts; The dust removal pipe can be installed through the first side wall (3) or the second side wall (4); When the dust removal pipe is installed through the first side wall (3) or the second side wall (4), one end of the dust removal pipe is located outside the first side wall (3) and the second side wall (4) and connected to the dust removal system, and the other end of the dust removal pipe is located between the first side wall (3) and the second side wall (4) and between the lower edge of the blast furnace platform (2) and the first molten iron ladle (7) or between the lower edge of the blast furnace platform (2) and the second molten iron ladle (8).

2. The device of claim 1, wherein, The dust removal pipe is either the first dust removal pipe (11) or the second dust removal pipe (12); The first dust removal pipe (11) can be installed through the first side wall (3); when the first dust removal pipe (11) is installed through the first side wall (3), one end of the first dust removal pipe (11) is located on the left side of the first side wall (3) and connected to the dust removal system, and the other end of the first dust removal pipe (11) is located between the first side wall (3) and the second side wall (4) and between the lower edge of the blast furnace platform (2) and the first molten iron ladle (7); The second dust removal pipe (12) can be installed through the second side wall (4); when the second dust removal pipe (12) is installed through the second side wall (4), one end of the second dust removal pipe (12) is located on the right side of the second side wall (4) and connected to the dust removal system, and the other end of the second dust removal pipe (12) is located between the first side wall (3) and the second side wall (4) and between the lower edge of the blast furnace platform (2) and the second molten iron ladle (8).

3. The device of claim 2, wherein, It also includes an air volume regulating valve, which is either a first air volume regulating valve (13) or a second air volume regulating valve (14); The first air volume regulating valve (13) is fixedly installed on the part of the first dust removal pipe (11) located on the left side of the first side wall (3); The second air volume regulating valve (14) is fixedly installed on the part of the second dust removal pipe (12) located on the right side of the second side wall (4).

4. A system for reducing heat loss of molten iron during tapping in a blast furnace, comprising a first sidewall (3), a second sidewall (4), a first railway (9), a second railway (10), a first molten iron ladle (7), a second molten iron ladle (8), a blast furnace platform (2), a swing chute (1), a first molten iron flow isolator (5), a second molten iron flow isolator (6), and a dust removal system; The first side wall (3) and the second side wall (4) both extend in the front-back direction; The first railway (9) and the second railway (10) both extend in the front-back direction and are fixedly installed on the left and right sides between the first side wall (3) and the second side wall (4); The first molten iron ladle (7) and the second molten iron ladle (8) are located on the first railway (9) and the second railway (10), respectively; The blast furnace platform (2) has mounting holes along the vertical direction, and the blast furnace platform (2) is located directly above the first molten iron ladle (7) and the second molten iron ladle (8); The swing nozzle (1) is rotatably installed in the mounting hole; The first molten iron flow isolator (5) and the second molten iron flow isolator (6) are located below the left and right ends of the swing spout (1) and directly above the first molten iron ladle (7) and the second molten iron ladle (8), respectively. characterized in that It also includes a device according to any one of claims 1 to 3 for reducing heat loss of molten iron during tapping in a blast furnace; The first dust removal pipe (11) and the second dust removal pipe (12) in the device that can reduce heat loss of molten iron during tapping in the blast furnace are respectively installed through the first side wall (3) and the second side wall (4); One end of the first dust removal pipe (11) in the device that reduces heat loss of molten iron during tapping in the blast furnace is located on the left side of the first side wall (3) and connected to the dust removal system, and the other end is located between the first side wall (3) and the second side wall (4) and between the lower edge of the blast furnace platform (2) and the first molten iron ladle (7). One end of the second dust removal pipe (12) in the device for reducing heat loss of molten iron during tapping in the blast furnace is located on the right side of the second side wall (4) and connected to the dust removal system, and the other end is located between the first side wall (3) and the second side wall (4) and between the lower edge of the blast furnace platform (2) and the second molten iron ladle (8).