阅读说明：本技术 冷却壁热镶耐火砖固定方法 (Method for fixing hot-inlaid refractory bricks of cooling wall ) 是由 夏强 于 2021-09-27 设计创作，主要内容包括：本发明涉及一种冷却壁热镶耐火砖固定方法,它包括冷却壁上型腔、下型腔以及铺设在下型腔内的耐火砖,在耐火砖上面设置压条,压条两侧通过补砂埋入砂型,压住耐火砖；在耐火砖与上型腔之间设置数个可调节内撑,每个可调节内撑由撑杆和两个可调节的厚螺母组成,撑杆顶住耐火砖和上型腔,防止耐火砖在高温铁水中上浮,两个厚螺母套装于撑杆以调节支撑高度。本发明采用一种由压条和调节撑头焊接组合的装置,将耐火砖安置在下型腔后,用该装置压住耐火砖,防止耐火砖上浮,能有效避免外露撑脚造成的缺陷,从而进一步提高冷却壁的质量。(The invention relates to a method for fixing a cooling wall hot-inlaid refractory brick, which comprises an upper cavity, a lower cavity and refractory bricks laid in the lower cavity of the cooling wall, wherein a pressing strip is arranged on the refractory bricks, and two sides of the pressing strip are embedded into a sand mold through sand supplement to press the refractory bricks; set up the adjustable internal stay of several between resistant firebrick and last die cavity, every adjustable internal stay comprises vaulting pole and two adjustable thick nuts, and resistant firebrick and last die cavity are withstood to the vaulting pole, prevent resistant firebrick come-up in high temperature molten iron, and two thick nuts suit are in the vaulting pole with regulation support height. The device is combined by welding the pressing strip and the adjusting support head, and after the refractory bricks are arranged in the lower cavity, the refractory bricks are pressed by the device, so that the refractory bricks are prevented from floating upwards, the defect caused by exposed support feet can be effectively avoided, and the quality of the cooling wall is further improved.)

1. The utility model provides a stave is inlayed resistant firebrick fixed method hot, it includes the stave and goes up die cavity (1), lower die cavity (2) and lay resistant firebrick (3) in lower die cavity (2), its characterized in that: a pressing strip (4) is arranged on the refractory bricks (3), and two sides of the pressing strip (4) are embedded into a sand mold through sand supplement to press the refractory bricks (3);

set up adjustable internal stay (5) of several between resistant firebrick (3) and last die cavity (1), every adjustable internal stay (5) comprises vaulting pole and two adjustable thick nuts, and resistant firebrick and last die cavity are withstood to the vaulting pole, prevent to resist firebrick come-up in high temperature molten iron, and two thick nuts suit are in the vaulting pole in order to adjust bearing height.

2. The stave hot-set refractory brick fixing method of claim 1, wherein: two adjustable inner supports (5) are arranged between the refractory brick (3) and the upper cavity (1) and are respectively positioned on the left side and the right side.

3. The stave hot-set refractory brick fixing method of claim 1, wherein: the number of the adjustable inner supports (5) is three, and the three adjustable inner supports are respectively positioned on the left side, the middle part and the right side between the refractory brick (3) and the upper cavity (1).

Technical Field

The invention belongs to the metallurgical casting industry, and particularly relates to a method for fixing a hot-inlaid refractory brick of a cooling wall.

Background

With the increasing expectation of the metallurgical industry on the service life of blast furnaces, the quality requirements of the cooling wall are continuously improved. The brick-inlaid cooling wall is generally arranged at the furnace bosh part of the blast furnace, is the position with the most severe working condition and has higher requirement on quality. The stave brick is classified into a hot-lined brick and a cold-lined brick, wherein the hot-lined brick can be used for prolonging the service life better.

The cooling wall with hot inlaid bricks belongs to a special casting process, and is characterized by that in the cavity interior the refractory bricks are fixed by using special method, and then poured together with molten iron. In order to prevent the refractory bricks from floating upwards in high-temperature molten iron, the refractory bricks are generally fixed by adopting a method of externally fixing supporting heads, so that tens of supporting feet of the supporting heads are exposed outside the hot surface of the cooling wall, and because the hot surface is a working surface, the method for fixing the refractory bricks destroys the integrity of the cooling wall and increases the generation of casting stress and defects, so that the condition that the supporting feet are exposed is eliminated to improve the overall quality of the inlaid cooling wall.

In view of the above, those skilled in the art have endeavored to develop an improved method for fixing the hot-inlaid refractory bricks of the stave so as to eliminate the exposed state of the conventional brace and improve the overall quality of the inlaid stave.

Disclosure of Invention

The invention aims to provide an improved method for fixing a hot-inlaid refractory brick of a cooling wall, which adopts a device formed by welding and combining a pressing strip and an adjusting support head, the refractory brick is placed in a lower cavity, and the device is used for pressing the refractory brick to prevent the refractory brick from floating upwards, so that a hot surface exposed support leg can be completely eliminated, and the problem of the prior art that the whole defect is caused by the exposed support leg is solved.

The technical solution of the invention is as follows:

a method for fixing a cooling wall hot-inlaid refractory brick comprises an upper cavity, a lower cavity and refractory bricks laid in the lower cavity of the cooling wall, wherein a pressing strip is arranged on the refractory bricks, and two sides of the pressing strip are embedded into a sand mold through sand supplement to press the refractory bricks;

set up the adjustable internal stay of several between resistant firebrick and last die cavity, every adjustable internal stay comprises vaulting pole and two adjustable thick nuts, and resistant firebrick and last die cavity are withstood to the vaulting pole, prevent resistant firebrick come-up in high temperature molten iron, and two thick nuts suit are in the vaulting pole with regulation support height.

Two adjustable inner supports are arranged between the refractory bricks and the upper cavity and are respectively positioned on the left side and the right side.

Three adjustable internal stays are arranged between the refractory bricks and the upper cavity and are respectively positioned at the left side, the middle and the right side.

The method for fixing the hot-inlaid refractory bricks of the cooling wall adopts a device formed by welding and combining a pressing strip and an adjusting support head, and after the refractory bricks are arranged in a lower cavity, the device is used for pressing the refractory bricks to prevent the refractory bricks from floating upwards. By arranging the internal fixing device, the defects caused by the exposed supporting feet can be effectively avoided while the refractory bricks are fixed, so that the quality of the cooling wall is further improved.

The invention adopts a device which is formed by welding and combining the pressing strips and the adjusting support heads, and the inner support is adjustable, so that the method for fixing the refractory bricks has stronger universality and simple and convenient operation.

Drawings

FIG. 1 is a schematic view showing an embodiment of a method for fixing hot-inlaid refractory bricks of a stave cooler according to the present invention.

Reference numerals:

1 is an upper die cavity, 2 is a lower die cavity, 3 is a refractory brick, 4 is a pressing strip, and 5 is an adjustable inner support.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

Referring to fig. 1, the invention provides a method for fixing a cooling wall by embedding refractory bricks, wherein the cooling wall is provided with an upper cavity 1 and a lower cavity 2, refractory bricks 3 are laid in the lower cavity 2, a pressing strip 4 is arranged on the refractory bricks 3, and two sides of the pressing strip 4 are embedded into a sand mold through sand supplement to press the refractory bricks 3.

Set up several adjustable internal stay 5 between resistant firebrick 3 and last die cavity 1, every adjustable internal stay 5 comprises vaulting pole and two adjustable thick nuts, and the vaulting pole withstands resistant firebrick and last die cavity, prevents to resist resistant firebrick come-up in high temperature molten iron. The two thick nuts are sleeved on the support rod, and the support height can be adjusted.

Two adjustable inner supports 5 are arranged between the refractory brick 3 and the upper cavity 1, and the two adjustable inner supports 5 are respectively positioned on the left side and the right side of the cavity. Three adjustable inner supports 5 are arranged between the refractory brick 3 and the upper cavity 1 according to the total length of the refractory brick, and are respectively positioned at the left side, the middle and the right side of the cavity.

According to the method, a device for welding and combining the pressing strip and the adjusting support head is prepared on a construction site, and after the refractory bricks are arranged in the lower cavity, the device is used for pressing the refractory bricks to prevent the refractory bricks from floating upwards. Two sides of a layering of the device are embedded into sand moulds through sand supplement to press refractory bricks; the inner support is supported against the upper parts of the refractory bricks and the cavity by two thick nuts, the supporting height is adjusted within a certain range, and the refractory bricks are prevented from floating upwards in high-temperature molten iron. The number of the adjusting support heads on the batten can be 2-3 according to the total length of the refractory bricks. After the fixing method is used, the hot surface of the cooling wall has no supporting leg, the stress and the hot surface casting defect are eliminated, and the product quality can be improved. Because the inner support is adjustable, the method for fixing the refractory brick has strong universality and is simple and convenient to operate.

Of course, those skilled in the art will recognize that the above-described embodiments are illustrative only and not intended to be limiting, and that changes, modifications, etc. to the above-described embodiments are intended to fall within the scope of the appended claims, provided they fall within the true spirit and scope of the present invention.