Prefabricated blast furnace molten iron runner and slag runner

Abstract

The utility model provides a prefabricated blast furnace molten iron slag runner, which comprises a slag runner and a slag runner lining, the slag runner comprises a ledge and a body, the ledge is provided with a groove, the upper surface of the body is provided with a slot, the slag runner is internally provided with a water-cooling inner cavity, the slag runner lining comprises a runner ledge and a runner body, the bottom of the runner ledge is provided with a clamping block, and the bottom of the runner body is provided with a water-cooling inner cavity. An insertion plate is fixed to the lower surface of the ditch body. The precast block is divided into the slag runner and the slag runner lining, when the slag runner lining is eroded and thinned, the lining can be directly replaced, the cost is reduced, the slag runner is internally provided with the water-cooling inner cavity, the contact area is large, the cooling effect is good, and the service life of the slag runner is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace ironmaking, in particular to a prefabricated blast furnace iron slag ditch. Background Art

[0002] In the blast furnace ironmaking process, the slag ditch is a critical component of the blast furnace tapping platform. This ditch is primarily formed by casting or ramming aluminum carbide silicon carbon refractory materials. During blast furnace ironmaking, the slag within the slag ditch is extremely high-temperature, and if not cooled, it will damage the slag ditch. Currently, commonly used slag ditches are equipped with curved water pipes within their shells, using cold water pipes for cooling. However, this cooling effect is poor and inefficient. Furthermore, with the development of modern ironmaking technology, blast furnace production capacity has greatly increased, significantly increasing the speed and frequency of slag tapping. This has accelerated erosion of the slag ditch's working surface, increasing the degree of scouring damage. Manual lining and repair are time-consuming and labor-intensive, and prolonged repairs can also affect production efficiency. Summary of the Invention

[0003] In view of the above problems, the utility model provides a prefabricated blast furnace molten iron ditch and slag ditch.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: including a slag discharge ditch and a slag ditch lining, the slag discharge ditch includes a ditch side and a ditch body, the ditch side is provided with a groove, the upper surface of the ditch body is provided with a slot, the slag discharge ditch is provided with a water-cooled inner cavity, the slag ditch lining includes a ditch side and a ditch body, a clamping block is provided at the bottom of the ditch side, and a plug-in plate is fixed on the lower surface of the ditch body.

[0005] Preferably, a water inlet and a water outlet are respectively provided on the outside of the ditch body of the slag discharge ditch, and the water inlet and the water outlet are both communicated with the water-cooled inner cavity. The water inlet is connected to the top of the water-cooled inner cavity, and the water outlet is connected to the bottom of the water-cooled inner cavity.

[0006] Preferably, the water-cooling inner cavity is wavy, and the top of the water-cooling inner cavity with slots is lower than the top of the water-cooling inner cavity without slots.

[0007] Preferably, the ditch body is a U-shaped plate, the inserting plate is perpendicular to the ditch body, and the top of the inserting plate is connected to the bottom of the ditch side.

[0008] Preferably, a lifting ring is fixed on the upper end of the ditch side.

[0009] Preferably, the upper surface of the groove body is a U-shaped groove, and the size of the upper surface of the groove body is consistent with the size of the lower surface of the groove body.

[0010] Preferably, the slots match the size of the plug-in boards, and the multiple plug-in boards are embedded in the corresponding slots one by one.

[0011] Preferably, the size of the groove matches that of the card block, and a plurality of the card blocks are embedded in the corresponding grooves one by one.

[0012] Preferably, the slag ditch lining is formed by vibrating, casting and drying Al2O3-SiC-C castable material using a mold.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: a water-cooled inner cavity is provided inside the ditch body of the slag ditch of the present invention. After the cooling water enters, the cooling water can be directly used to impact the bottom of the slag ditch for cooling, so that the cooling water directly contacts the entire slag trough. The water-cooled inner cavity is wavy, which can slow down the water flow rate, prolong the contact time, increase the contact area, and improve the cooling effect; the slag ditch lining is detachable, and the replacement method is also simple and convenient. When the slag ditch lining is eroded and thinned, the lining can be directly replaced, which reduces the cost and makes the entire operation convenient and quick; the slag ditch lining adopts Al2O3-SiC-C castable, which significantly improves the cracking and peeling phenomenon, has good impact resistance, eliminates the tensile stress in the working lining of the castable, and solves the cracking problem of the castable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of the prefabricated blast furnace iron slag ditch of the utility model.

[0015] Figure 2 This is a schematic diagram of the slag discharge ditch structure of the prefabricated blast furnace molten iron ditch slag ditch of the utility model.

[0016] Figure 3 It is a side view of the prefabricated blast furnace molten iron ditch and slag ditch of the utility model.

[0017] Figure 4 This is the AA cross-sectional view of the prefabricated blast furnace molten iron ditch and slag ditch of the utility model.

[0018] Figure 5 This is a BB cross-sectional view of the prefabricated blast furnace molten iron ditch and slag ditch of the utility model.

[0019] Figure 6 This is a CC cross-sectional view of the prefabricated blast furnace molten iron ditch and slag ditch of the utility model.

[0020] Figure 7 It is a side view of the slag ditch lining of the prefabricated blast furnace molten iron ditch slag ditch of the utility model.

[0021] Figure 8 It is a front view of the slag ditch lining of the prefabricated blast furnace iron ditch slag ditch of the utility model.

[0022] Description of the accompanying drawings: 1. Slag ditch, 11. Water-cooled inner cavity, 111. Water inlet, 112. Water outlet, 12. Groove side, 121. Groove, 13. Groove body, 131. Slot, 2. Slag ditch lining, 21. Groove side, 211. Lifting ring, 212. Block, 22. Groove body, 221. Insert plate. DETAILED DESCRIPTION

[0023] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the present invention is described in detail below with reference to the embodiments.

[0024] Please refer to Figure 1 、 Figure 2 、 Figure 7 and Figure 8 A prefabricated blast furnace molten iron slag ditch according to an embodiment of the present invention comprises a slag ditch 1 and a slag ditch lining 2. The slag ditch 1 comprises a trough side 12 and a trough body 13. The trough side 12 is provided with a groove 121. The upper surface of the trough body 13 is provided with a slot 131. A water-cooled inner cavity 11 is provided in the slag ditch 1. The slag ditch lining 2 comprises a trough side 21 and a trough body 22. A clamping block 212 is provided at the bottom of the trough side 21. A plug-in plate 221 is fixed to the lower surface of the trough body 22.

[0025] In one embodiment, if Figure 3 and Figure 6 As shown, a water inlet 111 and a water outlet 112 are respectively provided on the outside of the ditch body of the slag discharge ditch 1. The water inlet 111 and the water outlet 112 are both communicated with the water-cooled inner cavity 11. The water inlet 111 is connected to the top of the water-cooled inner cavity 11, and the water outlet 112 is connected to the bottom of the water-cooled inner cavity 11. Cooling water can enter from the water inlet and finally be discharged from the water outlet.

[0026] In one embodiment, if Figure 4 、 Figure 5 and Figure 6 As shown, the water-cooling inner cavity 11 is wavy, and the top of the water-cooling inner cavity 11 with the slot 131 is lower than the top of the water-cooling inner cavity 11 without the slot 131, which can slow down the water flow rate, extend the contact time, increase the contact area, and improve the cooling effect.

[0027] In one embodiment, if Figure 7 As shown, the ditch body 22 is a U-shaped plate, the inserting plate 221 is perpendicular to the ditch body 22, and the top of the inserting plate 221 is connected to the bottom of the ditch side 21. The inserting plate 221 can fix the slag ditch lining 2 and also play a role in heat conduction.

[0028] In one embodiment, if Figure 1 As shown, a lifting ring 211 is fixed on the upper end of the channel side 21 .

[0029] In one embodiment, if Figure 1 and Figure 2 As shown, the upper surface of the groove body 13 is a U-shaped groove, and the upper surface of the groove body 13 is consistent with the lower surface of the groove body 22 in size, so that the slag groove lining 2 can fit tightly with the slag groove 1 to prevent the existence of gaps that lead to poor cooling effect.

[0030] In one embodiment, if Figure 4 and Figure 5 As shown, the slots 131 match the sizes of the inserting plates 221 , and a plurality of the inserting plates 221 are embedded in the corresponding slots 131 one by one, so as to fix the position of the slag ditch lining 2 .

[0031] In one embodiment, if Figure 2 、 Figure 5 and Figure 8 As shown, the sizes of the groove 121 and the clamping block 212 match each other, and a plurality of the clamping blocks 212 are embedded in the corresponding grooves 121 one by one to fix the position of the slag ditch lining 2.

[0032] In one embodiment, the slag ditch lining 2 is formed by vibrating casting and drying Al2O3-SiC-C castable using a mold. The Al2O3-SiC-C castable has excellent high-temperature wear resistance, chemical corrosion resistance and thermal shock resistance.

[0033] Usage: Combined Figures 1 to 8 As shown, the slag ditch 1 is set at the slag outlet of the blast furnace, and the slag ditch 1 is aligned and spliced ​​end to end, and the high-temperature slag will enter the slag ditch, and then the water inlet 111 and the water outlet 112 are connected to the cooling water circulation equipment, so that the water-cooled inner cavity 11 inside the ditch body can be filled with cooling water to cool the high-temperature slag; if the working surface of the slag ditch 1 is eroded, the worn slag ditch lining 2 is removed and replaced with a new slag ditch lining 2. The whole operation is convenient and quick.

[0034] The present invention has been described with reference to the above embodiments. However, these embodiments are merely exemplary embodiments of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the present invention. On the contrary, modifications and improvements made without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention.

Claims

1. A prefabricated blast furnace molten iron ditch slag ditch, characterized by: The invention comprises a slag discharge groove (1) and a slag groove lining (2), wherein the slag discharge groove (1) comprises a groove side (12) and a groove body (13), the groove side (12) is provided with a groove (121), the upper surface of the groove body (13) is provided with a slot (131), a water-cooling inner cavity (11) is provided in the slag discharge groove (1), the slag groove lining (2) comprises a groove side (21) and a groove body (22), a clamping block (212) is provided at the bottom of the groove side (21), and a plug plate (221) is fixed on the lower surface of the groove body (22).

2. A prefabricated blast furnace molten iron ditch and slag ditch according to claim 1, characterized in that: A water inlet (111) and a water outlet (112) are respectively provided on the outer side of the ditch body of the slag discharge ditch (1), and the water inlet (111) and the water outlet (112) are both communicated with the water-cooled inner cavity (11), the water inlet (111) is connected to the top end of the water-cooled inner cavity (11), and the water outlet (112) is connected to the bottom end of the water-cooled inner cavity (11).

3. The prefabricated blast furnace molten iron ditch and slag ditch according to claim 1, characterized in that: The water-cooling inner cavity (11) is wavy, and the top of the water-cooling inner cavity (11) with a slot (131) on the top is lower than the top of the water-cooling inner cavity (11) without a slot (131) on the top.

4. A prefabricated blast furnace molten iron ditch and slag ditch according to claim 1, characterized in that: The groove body (22) is a U-shaped plate, the inserting plate (221) is perpendicular to the groove body (22), and the top of the inserting plate (221) is connected to the bottom of the groove side (21).

5. The prefabricated blast furnace molten iron ditch and slag ditch according to claim 1, characterized in that: A lifting ring (211) is fixed to the upper end of the groove side (21).

6. The prefabricated blast furnace molten iron ditch and slag ditch according to claim 1, characterized in that: The upper surface of the groove body (13) is a U-shaped groove, and the upper surface of the groove body (13) matches the size of the lower surface of the groove body (22).

7. The prefabricated blast furnace molten iron ditch and slag ditch according to claim 1, characterized in that: The slot (131) matches the size of the plug-in board (221), and a plurality of the plug-in boards (221) are embedded in the corresponding slots (131) one by one.

8. The prefabricated blast furnace molten iron ditch and slag ditch according to claim 1, characterized in that: The groove (121) matches the size of the card block (212), and a plurality of the card blocks (212) are embedded in the corresponding grooves (121) one by one.

9. The prefabricated blast furnace molten iron ditch and slag ditch according to claim 1, characterized in that: The slag ditch lining (2) is formed by vibrating, pouring and drying Al2O3-SiC-C casting material using a mold.

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