TWM554916U - Life-extension furnace lining structure of steel-storage barrel - Google Patents

Description

Shengshang barrel lining furnace lining structure

The present invention relates to a life extension furnace lining structure, in particular to a steel lining structure for a steel drum.

Referring to FIG. 1 , the lining of the steel drum in the conventional steel making process is disposed on the inner surface of the iron shell 10, and includes the heat-dissipating plate 11 , the high-aluminum brick 12 , and the permanent layer 13 (wax stone brick) arranged in sequence. And the aluminum-magnesium does not burn the brick working layer 14. The thickness of the thermal insulation plate 11, the high alumina brick 12, the wax stone brick 13 and the aluminum magnesium non-fired brick working layer 14 may be 13 mm, 50 mm, 32 mm and 152 mm, respectively. Since the temperature of the iron shell 10 cannot be too high (below 350 ° C), the material of the permanent layer 13 uses a wax stone brick having a lower thermal conductivity. However, the corrosion resistance of the wax stone bricks is poor, which obviously leads to a decrease in the service life of the steel drum. In addition, the backing of the original heat-dissipating plate 11 also has a problem of insufficient refractoriness and strength. Therefore, the service life of the conventional steel drum is only about 150 times. Therefore, it is necessary to seek a solution.

Therefore, the purpose of the present invention is to provide a steel lining structure for a steel drum.

Therefore, the extended life lining structure of the new steel drum is suitable for being disposed on the inner surface of a steel drum. The steel lining structure of the ladle includes a first working layer, a second working layer, and a thermal break layer. The first working layer is disposed spaced apart from the steel ladle. The second working layer is interposed between the first working layer and the steel ladle and adjacent to the first working layer. The thermal insulation layer is disposed between the second working layer and the iron shell.

The effect of the novel is that the service life of the steel drum can be improved by modifying the conventional permanent layer to the second working layer (also referred to as the secondary working layer).

Referring to FIG. 2, an embodiment of the extended life lining structure of the present steel ladle is suitable for being disposed on the inner surface of a steel ladle iron shell 9. The steel lining structure of the ladle includes a first working layer 2, a second working layer 3, and a thermal break layer 4.

The first working layer 2 is disposed spaced apart from the ladle iron shell 9. In the present embodiment, the first working layer 2 includes a plurality of stacked aluminum-magnesium unfired bricks, and the first working layer 2 has a thickness of 152 mm in the radial direction of the ladle iron shell 9. As shown in FIG. 2, in the embodiment, the first working layer 2 is made of a piece of aluminum-magnesium non-burned brick in the radial direction of the steel ladle, so each piece of aluminum-magnesium is not burned in the steel ladle 9 The thickness in the radial direction is 152mm

The second working layer 3 is interposed between the first working layer 2 and the ladle iron shell 9 and is disposed adjacent to the first working layer 2. The main design concept of the new model is that the wax stone brick of the conventional backing layer has the problem of insufficient corrosion resistance, so it is modified to have the function of the working layer, that is, it is modified to have moderate thermal conductivity and corrosion resistance. The second working layer 3, which is superior in performance, may also be referred to as a secondary working layer. In this embodiment, the material of the second working layer 3 is an aluminum-magnesium castable; or the material of the second working layer 3 may also be an aluminum spinel castable.

The heat insulation layer 4 is disposed between the second working layer 3 and the ladle iron shell 9. In this embodiment, the material of the heat insulation layer 4 is a microporous mullite brick.

In this embodiment, after the temperature calculation of the heat transfer interface/steel iron can 9 is simulated, the novel life extension lining structure is designed as the thermal insulation layer 4, the second working layer 3 and the first working layer. 2 has a thickness of 32 mm, 50 mm and 152 mm, respectively.

In this embodiment, the new design of the above-mentioned new steel drum extension furnace lining structure is tested in a steel mill for a service life of more than 170 times, which can be used for 20 times of steel drum lining structure. life.

In summary, the extended life lining structure of the new steel drum is changed by setting the conventional permanent layer into a second working layer 3 (thickness 50 mm) made of aluminum-magnesium castable or aluminum spinel castable. The material is the thermal insulation layer 4 (thickness 32mm) of the microporous mullite brick, which can fully improve the service life of the steel drum, so it can achieve the purpose of the novel.

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

2‧‧‧First working layer
3‧‧‧Second working layer
4‧‧‧ Thermal insulation layer
9‧‧‧Steel steel drum

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a cross-sectional view showing a lining structure of a conventional steel drum; and FIG. 2 is a cross-sectional view showing the novel An embodiment of a steel lining structure for a steel drum.

2‧‧‧First working layer

3‧‧‧Second working layer

4‧‧‧ Thermal insulation layer

9‧‧‧Steel steel drum

Claims (10)

The steel lining structure of the steel drum is suitable for being disposed on the inner surface of a steel drum iron shell, wherein the steel lining structure of the steel drum comprises: a first working layer, which is opposite to the steel shell of the steel drum Arranging at intervals; a second working layer between the first working layer and the steel ladle and adjacent to the first working layer; and a thermal insulation layer disposed on the second working layer and The steel drum is between the iron shells. The steel lining structure of the ladle according to claim 1, wherein the first working layer comprises a plurality of stacked aluminum-magnesium unfired bricks. The life lining structure of the ladle according to claim 2, wherein the first working layer has a thickness of 152 mm. The life extension furnace lining structure of the steel drum according to claim 3, wherein each of the aluminum-magnesium non-fired bricks has a thickness of 152 mm in a radial direction of the steel ladle. The life lining structure of the steel ladle according to claim 1, wherein the second working layer is made of an aluminum-magnesium castable. The life lining structure of the ladle according to claim 5, wherein the second working layer has a thickness of 50 mm. The life lining structure of the steel ladle according to claim 1, wherein the second working layer is made of an aluminum spinel castable. The life lining structure of the ladle according to claim 7, wherein the second working layer has a thickness of 50 mm. The life lining structure of the steel ladle according to claim 1, wherein the material of the thermal insulation layer is mullite brick. The life extension furnace lining structure of the steel drum according to claim 9, wherein the heat insulation layer has a thickness of 32 mm.