Blast furnace hearth masonry structure for eliminating blast furnace air gap

A technology of masonry structure and blast furnace, which is applied in blast furnace, blast furnace details, blast furnace parts and other directions, can solve the problems of destroying the integrity of the heat transfer system of the hearth, reducing the service life of the blast furnace, and insufficient consolidation strength, and achieves favorable results. Effects of blast furnace longevity, elimination of blast furnace hearth air gaps, and reduction of abnormal erosion
CN112176138AInactive Publication Date: 2021-01-05CISDI RES & DEV CO LTD
6 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CISDI RES & DEV CO LTD
Publication Date
2021-01-05
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention belongs to the field of blast furnace iron making, and relates to a blast furnace hearth masonry structure for eliminating a blast furnace air gap. The blast furnace hearth masonry structure is divided into a large carbon brick masonry structure and a small carbon brick and large carbon brick masonry structure, a material ramming layer in a traditional blast furnace hearth masonry structure is replaced with a pouring material layer, the thickness of the pouring material layer is less than 40mm, the heat conductivity coefficient of pouring materials in the pouring material layer is greater than 10W / (m.DEG C), and the pouring materials are one or two of CSiC or all-C materials. The problems that due to the fact that the solidification strength of the material ramming layer between a cooling wall and carbon bricks is not enough, the air gap is easy to occur, the integrity of a hearth heat transfer system is damaged, and the service life of a blast furnace is shortened are solved.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the field of blast furnace ironmaking, and relates to a blast furnace hearth masonry structure for eliminating air gaps in the blast furnace. Background technique

[0002] The blast furnace is the key link with the highest investment and the highest energy consumption in the iron and steel industry. Prolonging the life of the blast furnace plays a vital role in reducing the cost per ton of iron and improving the competitiveness of iron and steel enterprises. Since 2000, my country's iron and steel industry has developed rapidly, and its steel output has grown rapidly, ranking first in the world. However, the current average life of blast furnaces in my country is only 5-10 years, which is far lower than that of foreign countries. The problematic parts of my country's blast furnaces are mainly concentrated in the hearth. Since 2000, according to incomplete statistics, hearth burn-through accidents have occurred in at least 45 ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More