Blast furnace hearth ceramic cup side wall formed by inlaying and laying refractory brick rings

A technology of refractory bricks and ceramic cups, applied in blast furnaces, blast furnace details, blast furnace parts, etc., can solve the problem of displacement, loss of stability, airtightness, entering into the circumferential inter-annular brick seam or direct contact with a large width on the back side, etc. problems, to achieve the effect of improving overall stability, prolonging furnace service life and long functional life

Pending Publication Date: 2020-08-18
北京瑞尔非金属材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the six surfaces of the refractory bricks used are all flat, there is no structural constraint between the refractory bricks in the refractory brick ring that constitutes the ceramic cup wall except for the masonry mud, and harmful substances such as slag and iron are easy to drill into the linear bricks. The cracks enter the brick joints between the circumferential rings with a large backside width or directly contact and erode the carbon bricks; at the same time, because the refractory bricks in the brick ring have no structural constraints, they are caused by non-

Method used

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  • Blast furnace hearth ceramic cup side wall formed by inlaying and laying refractory brick rings
  • Blast furnace hearth ceramic cup side wall formed by inlaying and laying refractory brick rings
  • Blast furnace hearth ceramic cup side wall formed by inlaying and laying refractory brick rings

Examples

Experimental program
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Effect test

Example Embodiment

[0035] Embodiment one: see figure 1 , figure 2 , Figure 8 and Figure 9 . A ceramic cup side wall 1 of a blast furnace hearth made of inlaid refractory brick rings 11 according to the present invention is stacked up and down by several layers of refractory brick rings 11 in the height direction of the hearth, and at least one refractory brick is formed in the radial direction of the blast furnace Ring 11, ceramic pad 2 is arranged at the bottom of refractory brick ring 11, carbon brick 3 and tuyere combination brick 4 are arranged on the outside of ceramic cup side wall 1, and refractory brick ring 11 is made of first refractory brick 111 and second refractory brick 112 alternately. Both sides of the first refractory brick 111 have arc-shaped vertical grooves on both sides, and both sides of the second refractory brick 112 have vertical convex bands with an arc-shaped cross-section. The vertical convex band on the side of 112 is embedded in the vertical groove on the sid...

Example Embodiment

[0037] Embodiment two:

[0038] see figure 1 , image 3 and Figure 10, a ceramic cup side wall 1 of a blast furnace hearth made of inlaid refractory brick rings 11 according to the present invention is stacked up and down by several layers of refractory brick rings 11 in the height direction of the hearth, and at least one refractory brick ring 11 is formed in the radial direction of the blast furnace The brick ring 11, the refractory brick ring 11 is sequentially built by the third refractory brick 113, the two sides of the third refractory brick 113 respectively have a vertical groove and a vertical convex belt with a trapezoidal cross-sectional shape, and the third refractory brick 113 The vertical convex band on the side is embedded in the vertical groove on the side of the adjacent third refractory brick 113;

[0039] The design width of the masonry gap between the third refractory bricks 113 is 0.5mm.

Example Embodiment

[0040] Embodiment three:

[0041] see figure 1 , Figure 4 , Figure 11 . A blast furnace hearth ceramic cup wall 1 composed of inlaid refractory brick rings 11 of the present invention consists of several layers of refractory brick rings 11 stacked up and down in the height direction of the hearth, and at least one refractory brick ring in the radial direction of the blast furnace 11. The refractory brick ring 11 is composed of the first refractory brick 111, the second refractory brick 112 and the first replacement brick 114. The vertical convex belt on the side of the second refractory brick 112 is embedded in the phase. Among the vertical grooves on the adjacent first refractory brick 111 side, one side of the first replacement brick 114 is a plane, and the other side has a vertical protrusion extending into the vertical groove on the first refractory brick 111 side. Belt, the space surrounded by the flat side of the first replacement brick 114 and the vertical groove ...

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Abstract

The invention discloses a blast furnace hearth ceramic cup side wall formed by inlaying and laying refractory brick rings. The blast furnace hearth ceramic cup side wall is formed by laying refractorybrick layers layer by layer in the height direction, each refractory brick layer is a single refractory brick ring or a plurality of refractory brick rings in the radial direction of a blast furnace,and each refractory brick ring is formed by inlaying and laying a plurality of refractory bricks. Compared with the hearth ceramic cup side wall built by standard small refractory bricks, the ceramiccup side wall is formed by layering the refractory brick rings which are embedded and built, and the refractory bricks in the refractory brick rings form mutual structural constraint through a primary-secondary matched building mode of side convex belts and side grooves, so that the stability of each refractory brick is improved, the overall stability of the whole ceramic cup side wall masonry isimproved, the structural defects that a traditional ceramic cup side wall refractory brick shifts, even topples and collapses in the using process are overcome, carbon bricks on the side wall of a hearth are better protected, and then the service life of the blast furnace is prolonged.

Description

technical field [0001] The invention relates to the technical field of blast furnace ironmaking equipment, in particular to a side wall of a blast furnace hearth ceramic cup made of inlaid and bonded refractory brick rings. Background technique [0002] The ceramic cup lining of the blast furnace hearth is in a high-temperature and high-pressure place with molten slag iron, gas, and harmful elements, and is subject to chemical erosion, mechanical erosion, vibration hazards, high temperature and thermal shock damage, etc. The impact of these destructive factors on the functional life of the ceramic cup liner first depends on the smelting intensity of the blast furnace. The higher the smelting intensity, the greater their damage. Although the practical application of the ceramic cup lining has proved its comprehensive effects of protecting hearth carbon bricks, prolonging the life of the blast furnace, and being beneficial to environmental protection, with the improvement of b...

Claims

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Application Information

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IPC IPC(8): C21B7/06
CPCC21B7/06
Inventor 徐瑞图何汝生童小平徐潇晗
Owner 北京瑞尔非金属材料有限公司
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