Blast furnace cooling wall provided with dovetail grooves and blast furnace

Abstract

The utility model discloses a blast furnace cooling wall with dovetail grooves and a blast furnace, the dovetail grooves are arranged on the hot surface side of the blast furnace cooling wall, the dovetail grooves are arranged at intervals, and raised groove ribs are formed between two adjacent dovetail grooves. An inclined included angle is formed between the groove extending direction of the dovetail groove and the longitudinal center line of the blast furnace cooling wall, so that the groove extending direction of the dovetail groove is inclined to the longitudinal center line of the blast furnace cooling wall, and the stress distribution of the blast furnace cooling wall in the transverse direction is improved; therefore, the thermal stress deformation resistance of the blast furnace cooling wall is improved, and the service life of the blast furnace cooling wall is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnaces, in particular to a blast furnace cooling wall arranged with dovetail grooves and a blast furnace. Background Art

[0002] At present, the hot surface of the cooling wall of the blast furnace is formed by covering the side wall of the cooling wall with amorphous refractory (full name: amorphous refractory) or shaped refractory (full name: shaped refractory) and other refractory materials, and the hot surface side of the cooling wall is provided with a plurality of parallel arranged refractory materials such as Figure 1 The groove 2 shown and the grooves 2 between two adjacent grooves 2 are shown in FIG. Figure 1 The ribs 3 or protrusions shown are used in the bosh, waist and body of the blast furnace to enhance the adhesion between the refractory material and the wall of the cooling wall. In particular, after the refractory material on the hot surface is corroded and falls off in the blast furnace, the grooves 2 are conducive to slag hanging to form a slag skin lining to continue to protect the cooling wall, so it can continue to be used.

[0003] The groove 2 causes the local wall thickness of the cooling wall to be thinned, which in turn leads to different resistance capabilities of the cooling wall to thermal stress deformation in the longitudinal direction. That is, the cooling wall corresponding to the groove 2 has the weakest resistance to thermal stress deformation, while the cooling wall corresponding to the rib 3 has the strongest resistance to thermal stress deformation.

[0004] The groove 2 of the existing blast furnace is arranged horizontally and perpendicular to the longitudinal center line of the cooling wall. When the cooling wall is heated, the cooling wall corresponding to the groove 2, which has the weakest ability to resist thermal stress deformation, is prone to deformation due to thermal stress, such as longitudinal bending, which in turn causes damage to the cooling wall, especially the copper cooling wall with lower strength is more prone to deformation. Utility Model Content

[0005] To this end, in order to solve the above-mentioned problems, the utility model provides a blast furnace cooling wall and a blast furnace arranged with dovetail grooves, and the groove extension direction of the dovetail grooves is inclined to intersect with the longitudinal center line of the blast furnace cooling wall to improve the stress distribution of the blast furnace cooling wall in the lateral direction, so as to enhance the ability of the blast furnace cooling wall to resist thermal stress deformation.

[0006] To achieve the above purpose, the technical solution provided by the utility model is as follows:

[0007] The utility model provides a blast furnace cooling wall with dovetail grooves, wherein the dovetail grooves are arranged on the hot surface side of the blast furnace cooling wall, and the dovetail grooves are arranged at intervals to form a raised groove rib located between two adjacent dovetail grooves, and the groove extension direction of the dovetail grooves is arranged at an inclined angle to the longitudinal center line of the blast furnace cooling wall, so that the blast furnace cooling wall forms a corresponding transverse stress distribution, so as to improve the ability of the blast furnace cooling wall to resist thermal stress deformation.

[0008] Furthermore, the angle between the groove extension direction of the dovetail groove and the longitudinal center line of the blast furnace cooling wall is 75 to 85 degrees.

[0009] Furthermore, the dovetail grooves located on both sides of the longitudinal center line of the blast furnace cooling wall are arranged symmetrically or asymmetrically.

[0010] Furthermore, the blast furnace cooling stave is a copper cooling stave, a cast iron cooling stave or a cast steel cooling stave.

[0011] Furthermore, the hot surface lining of the blast furnace cooling wall is a shaped refractory lining or an unshaped refractory lining.

[0012] The utility model also provides a blast furnace, which at least comprises the above-mentioned blast furnace cooling wall arranged with dovetail grooves.

[0013] The technical solution provided by the utility model has the following beneficial effects:

[0014] By inclining the groove extension direction of the dovetail groove to the longitudinal center line of the blast furnace cooling wall, the stress distribution of the blast furnace cooling wall in the transverse direction is improved, so as to enhance the ability of the blast furnace cooling wall to resist thermal stress deformation, thereby extending the service life of the blast furnace cooling wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The figure shows a schematic diagram of a blast furnace cooling wall provided with dovetail grooves and groove ribs in the prior art;

[0016] Figure 2 Shown is a schematic diagram of a blast furnace cooling wall with dovetail grooves arranged in Example 1;

[0017] Figure 3 Shown is a cross-sectional view of the blast furnace cooling wall in Example 1. DETAILED DESCRIPTION

[0018] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0019] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0020] Embodiment 1

[0021] Reference Figure 2 and Figure 3As shown, embodiment 1 provides a blast furnace cooling stave arranged with dovetail grooves, the dovetail grooves 4 are arranged on the hot surface side of the blast furnace cooling stave 1, and the dovetail grooves 4 are arranged at intervals to form a raised groove rib 5 located between two adjacent dovetail grooves 4, and the groove extension direction 7 of the dovetail groove 4 is arranged at an inclined angle to the longitudinal center line 6 of the blast furnace cooling stave 1, so that the blast furnace cooling stave 1 forms a corresponding lateral stress distribution, so as to enhance the ability of the blast furnace cooling stave 1 to resist thermal stress deformation.

[0022] In this embodiment, the angle A between the groove extension direction 7 of the dovetail groove 4 and the longitudinal center line 6 of the blast furnace cooling wall 1 is 75 to 85 degrees, so as to form an oblique arrangement.

[0023] A plurality of dovetail grooves 4 and groove ribs 5 are arranged in parallel in the upper and lower directions, respectively, and every two adjacent dovetail grooves 4 are separated by a groove rib 5, and the dovetail grooves 4 have the following Figure 3 The concave groove portion shown.

[0024] By means of the oblique arrangement, the groove portions and groove ribs 5 of the dovetail grooves 4 are evenly distributed in the transverse direction of the blast furnace cooling stave 1 (the transverse direction is the left and right horizontal directions), thereby improving the stress distribution of the blast furnace cooling stave 1 in the transverse direction, and further strengthening the wall strength of the blast furnace cooling stave 1 corresponding to the dovetail grooves 4, thereby improving the overall ability of the blast furnace cooling stave 1 to resist thermal stress deformation, and extending the service life of the blast furnace cooling stave 1.

[0025] Therefore, by inclining the groove extension direction 7 of the dovetail groove 4 to the longitudinal center line 6 of the blast furnace cooling stave 1, the stress distribution of the blast furnace cooling stave 1 in the transverse direction is improved, so as to enhance the ability of the blast furnace cooling stave 1 to resist thermal stress deformation, thereby extending the service life of the blast furnace cooling stave 1.

[0026] When the dovetail grooves 4 on both sides of the longitudinal center line 6 of the blast furnace cooling stave 1 are arranged symmetrically, that is, the dovetail grooves 4 on both sides are distributed in a V shape after intersecting, the stress on both sides of the longitudinal center line 6 of the blast furnace cooling stave 1 can be balanced, so as to reduce the probability of local deformation of the blast furnace cooling stave 1 due to uneven stress, so as to further extend the service life of the blast furnace cooling stave 1.

[0027] Of course, in other embodiments, the dovetail grooves 4 located on both sides of the longitudinal center line 6 of the blast furnace cooling stave 1 can also be arranged asymmetrically, which can also enhance the wall strength of the blast furnace cooling stave 1 corresponding to the dovetail grooves 4, and is also beneficial to the overall ability of the blast furnace cooling stave 1 to resist thermal stress deformation.

[0028] In another preferred embodiment, the blast furnace cooling stave 1 is a copper cooling stave to ensure the service life of the blast furnace cooling stave 1.

[0029] In this specific embodiment, the hot surface lining of the blast furnace cooling stave 1 is a shaped refractory lining.

[0030] The material of the shaped refractory lining can be high temperature resistant materials such as Sialon bonded silicon carbide bricks, silicon nitride bonded silicon carbide bricks, silicon carbide bricks, graphite bricks, fired microporous aluminum carbon bricks or clay bricks.

[0031] The shaped refractory lining is covered and fixed on the surface of the groove wall and the groove rib 5 of the dovetail groove 4 to play a protective role.

[0032] Of course, in other embodiments, the blast furnace cooling stave 1 may also be a cast iron cooling stave or a cast steel cooling stave.

[0033] Furthermore, the hot surface lining of the blast furnace cooling stave 1 may also be an amorphous refractory lining.

[0034] Embodiment 2

[0035] Embodiment 2 provides a blast furnace, comprising at least the blast furnace cooling wall with dovetail grooves of embodiment 1.

[0036] By inclining the groove extension direction of the dovetail groove to the longitudinal center line of the blast furnace cooling wall, the stress distribution of the blast furnace cooling wall in the transverse direction is improved, so as to enhance the ability of the blast furnace cooling wall to resist thermal stress deformation, thereby extending the service life of the blast furnace cooling wall.

[0037] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A blast furnace cooling stave provided with dovetail grooves, wherein the dovetail grooves are arranged on the hot surface side of the blast furnace cooling stave, and the dovetail grooves are arranged at intervals to form a raised groove rib located between two adjacent dovetail grooves, characterized in that: The groove extension direction of the dovetail groove is set at an inclined angle to the longitudinal center line of the blast furnace cooling wall, so that the blast furnace cooling wall forms a corresponding transverse stress distribution to enhance the ability of the blast furnace cooling wall to resist thermal stress deformation.

2. The blast furnace cooling stave with dovetail grooves according to claim 1, characterized in that: The angle between the groove extension direction of the dovetail groove and the longitudinal center line of the blast furnace cooling wall is 75 to 85 degrees.

3. The blast furnace cooling stave with dovetail grooves according to claim 1, characterized in that: The dovetail grooves located on both sides of the longitudinal center line of the blast furnace cooling wall are arranged symmetrically or asymmetrically.

4. The blast furnace cooling stave with dovetail grooves according to any one of claims 1 to 3, characterized in that: The blast furnace cooling stave is a copper cooling stave, a cast iron cooling stave or a cast steel cooling stave.

5. The blast furnace cooling stave with dovetail grooves according to any one of claims 1 to 3, characterized in that: The hot surface lining of the blast furnace cooling stave is a shaped refractory lining or an unshaped refractory lining.

6. A blast furnace, characterized in that: The invention comprises at least a blast furnace cooling wall arranged with dovetail grooves as described in any one of claims 1 to 5.

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