Flash furnace water jacket

Abstract

Refractory brick containing grooves in a closing-up shape are formed in the side, facing the interior of the furnace, of the water jacket internally provided with a cooling pipe at intervals, a convex tooth part is formed in the area between every two adjacent refractory brick containing grooves, and refractory bricks are embedded in the refractory brick containing grooves and partially protrude out of the refractory brick containing grooves in the groove depth direction. And a reinforcing part is filled in an open groove area defined by the tooth top surface of the convex tooth part and the refractory bricks. On the basis that the refractory bricks are restrained by the convergent refractory brick containing grooves, the reinforcing parts are filled in the open groove areas defined by the tooth top faces of the convex tooth parts and the refractory bricks, the reinforcing parts connected with the convex tooth parts are connected with the refractory bricks at the same time, and the refractory bricks and the water jacket can be further connected and fixed through the reinforcing parts; therefore, the anti-falling effect of the refractory brick is further improved, and the anti-scouring strength of the refractory brick is guaranteed.

Description

Technical Field

[0001] The utility model relates to a flash furnace, in particular to a flash furnace water jacket. Background Art

[0002] The flash furnace chamber is an intensified smelting facility designed to process powdered copper sulfide and copper-nickel concentrates. The large surface area of the powdered material allows for ample oxygen contact within the furnace, resulting in a controlled oxidation reaction of the sulfide at high temperatures and at an extremely high rate. Currently, flash furnaces are primarily used for smelting sulfide concentrates such as copper and nickel.

[0003] The flash furnace is mainly composed of a reaction tower, a sedimentation tank, and an ascending flue. The upper part of the sedimentation tank is connected to the reaction tower and the ascending flue. The reaction tower is the main reaction area of the flash furnace and needs to be cooled by a cooling water jacket. The side of the water jacket facing the furnace is embedded with refractory bricks. In the flash furnace, the area around the front of the sedimentation tank connected to the reaction tower is called the triangle area. Due to the high reaction intensity at this location and the high intensity of the flue gas reflux on the furnace body, the refractory bricks on the water jacket at this location are easily detached under the scouring of high-temperature flue gas carrying melt, thus failing to protect the water jacket, and eventually causing the water jacket to leak, threatening the safety of the furnace body.

[0004] The technical solution disclosed in the patent document entitled "A Serrated Water Jacket for the Connection of a Flash Furnace" (document number CN202166330U, hereinafter referred to as Document 1) includes a copper water jacket and refractory bricks. The cooling copper pipe is pre-buried in the copper water jacket and adopts a double circuit. Refractory bricks are embedded in the serrated grooves on the inner surface of the copper water jacket.

[0005] The technical solution disclosed in the patent document entitled "Cooling Unit Assembly Flash Furnace Sedimentation Tank" (document number CN202105466U, hereinafter referred to as Document 2) includes a sedimentation tank consisting of a top, a flue gas zone and a slag line zone of the side and end walls, a melt zone of the side and end walls, and a furnace bottom. The top of the sedimentation tank is assembled by hanging a water jacket and refractory bricks through hanging parts. The inner end cross-sectional width of the serrated hanging water jacket or the side wall water jacket is greater than the cross-sectional width at the opening of the tooth groove, forming a closed trough body, which is beneficial to reduce the possibility of detachment of the refractory bricks from the water jacket.

[0006] Although Document 2 discloses a technical solution for preventing refractory bricks from separating from the water jacket, the separation of the refractory bricks from the tooth grooves on the water jacket is limited only by the closing shape of the trough body. When such a solution is applied to the high-intensity flue gas flushing environment at the connection area between the sedimentation tank and the reaction tower, the anti-separation effect of the refractory bricks is poor and still needs to be improved. Summary of the Invention

[0007] The utility model provides a flash furnace water jacket, which improves the anti-falling effect of refractory bricks in the connection area between the sedimentation tank and the reaction tower.

[0008] In order to achieve the above-mentioned purpose, the technical solution adopted is: a flash furnace water jacket, in which a cooling pipe is provided inside, and closed-end refractory brick receiving grooves are arranged at intervals on the side of the water jacket facing the furnace, and the area between two adjacent refractory brick receiving grooves forms a convex tooth portion, the refractory bricks are embedded in the refractory brick receiving grooves and partially protrude to the outside of the refractory brick receiving grooves along the groove depth direction, and the tooth top surface of the convex tooth portion and the open groove area surrounded by the refractory bricks are filled with a reinforcement portion.

[0009] Compared with the prior art, the technical effect of the present invention is as follows: on the basis of the closed-end refractory brick accommodating groove restraining the refractory bricks, a reinforcement portion is filled in the open groove area surrounded by the tooth top surface of the convex tooth portion and the refractory bricks, and the reinforcement portion connected to the convex tooth portion is also connected to the refractory bricks. The reinforcement portion can further connect and fix the refractory bricks and the water jacket, thereby further improving the anti-slip effect of the refractory bricks and ensuring the scour resistance of the refractory bricks. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the side of the water jacket facing outside the furnace in the utility model;

[0011] Figure 2 Schematic diagram of cooling pipe;

[0012] Figure 3 This is a schematic diagram of the side of the water jacket facing the furnace;

[0013] Figure 4 for Figure 3 K-direction view in;

[0014] Figure 5 This is a schematic diagram of the water jacket without refractory bricks and reinforcement parts.

[0015] Figure 6 This is a schematic diagram of the arrangement of tendon claws;

[0016] Figure 7 for Figure 6 A magnified view of part A in FIG;

[0017] Figure 8 Schematic diagram of the tendon claw structure;

[0018] Figure 9 It is a partial cross-sectional view of the water jacket. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-9 And related content, the utility model is further described in detail:

[0020] A flash furnace water jacket has a cooling pipe 12 inside, and closed-end refractory brick receiving grooves 11 are arranged at intervals on the side of the water jacket 10 facing the furnace. The area between two adjacent refractory brick receiving grooves 11 forms a convex tooth portion 13. Refractory bricks 20 are embedded in the refractory brick receiving grooves 11 and partially protrude to the outside of the refractory brick receiving grooves 11 along the groove depth direction. A reinforcement portion 30 is filled in the open groove area surrounded by the tooth top surface of the convex tooth portion 13 and the refractory bricks 20.

[0021] In the above technical solution, during construction, the refractory bricks 20 are first placed in the refractory brick receiving groove 11, and then the reinforcement portion 30 is filled into the open groove area surrounded by the tooth top surface of the convex tooth portion 13 and the refractory bricks 20. On the basis of the closed-end refractory brick receiving groove 11 restraining the refractory bricks 20, the reinforcement portion 30 is filled into the open groove area surrounded by the tooth top surface of the convex tooth portion 13 and the refractory bricks 20. The reinforcement portion 30 is connected to the convex tooth portion 13 and is also connected to the portion of the refractory brick 20 protruding from the refractory brick receiving groove 11. The reinforcement portion 30 serves as a transition piece to further connect and secure the refractory brick 20 to the water jacket 10, thereby further improving the anti-slip effect of the refractory brick 20 and ensuring the erosion resistance of the refractory brick 20.

[0022] It should be noted that in this embodiment, the reinforcement portion 30 may be formed from a refractory ramming mass filled within the open groove formed by the tooth top surface of the convex tooth portion 13 and the refractory bricks 20. Refractory ramming mass is a refractory material that is applied by ramming (manually or mechanically) and hardened by heating above room temperature. The specific composition of the refractory ramming mass is known in the art and will not be elaborated upon here.

[0023] Further, combined with Figure 9 As shown, the refractory brick receiving groove 11 is a dovetail groove. The refractory brick 20 protrudes from the outside of the refractory brick receiving groove 11 along the inclined groove wall of the refractory brick receiving groove 11 on one side relative to the inclined groove wall of the refractory brick receiving groove 11, and the slope is the same. The portion of the refractory brick 20 protruding from the refractory brick receiving groove 11 also has a trapezoidal structure. The reinforcement portion 30 filled in the open groove area is restricted by the shape of the protruding portion of the refractory brick 20, and its cross-section is also trapezoidal. A closed open groove is also formed between two adjacent reinforcement portions 30 to constrain the protruding portion of the refractory brick 20, further limiting the displacement of the refractory brick 20 along the groove depth direction of the refractory brick receiving groove 11 and preventing the refractory brick 20 from falling out.

[0024] As a preferred solution, combined Figure 4 、 9As shown, in order to enhance the connection stability between the reinforcement portion 30 and the convex tooth portion 13, a closing-shaped connecting groove 131 is provided on the tooth top surface of the convex tooth portion 13 (here, the groove shape of the connecting groove 131 is preferably a dovetail groove). The reinforcement portion 30 is provided with a connecting portion 31 having a cross-sectional shape consistent with and matching that of the connecting groove 131, and the connecting portion 31 is embedded in the connecting groove 131. The connecting portion 31, which is integrally formed with the reinforcement portion 30, is embedded in the closing-shaped connecting groove 131. The connecting portion 31 and the connecting groove 131 cooperate with each other to limit the displacement of the reinforcement portion 30 along the groove depth direction, thereby ensuring the connection stability between the reinforcement portion 30 and the convex tooth portion 13 and preventing the two from separating, which would cause the reinforcement portion 30 to lose its function as a transitional connection piece.

[0025] In addition, if Figure 6 、 7 As shown in Figures 8 and 9, considering that the width of the connection between the main body of the reinforcement portion 30 and the connecting portion 31 is relatively small, there is a possibility of fracture, which could affect the reliable connection between the reinforcement portion 30 and the protruding tooth portion 13. To further enhance the stability of the connection between the reinforcement portion 30 and the protruding tooth portion 13, a rib claw 40 is provided within the reinforcement portion 30. The rib claw 40 includes a fixing rod 41. The fixing rod 41 is inserted into the connecting groove 131 along the length of the connecting groove 131, and the rod diameter of the fixing rod 41 is larger than the diameter of the notch of the connecting groove 131. The rib claw 40 serves as a connecting member and is embedded within the reinforcement portion 30. The fixing rod 41 of the rib claw 40 is constrained within the connecting groove 131 by the notch diameter of the connecting groove 131, preventing the fixing rod 41 from disengaging from the connecting groove 131 along the depth direction of the connecting groove 131. This effectively prevents the rib claw 40 and reinforcement portion 30 from disengaging from the protruding tooth portion 13, thereby ensuring the stable connection of the reinforcement portion 30 to the protruding tooth portion 13.

[0026] like Figure 7 、 8 As shown in , 9 , the fixing rod 41 is connected to a connecting rod 42 extending into the reinforcement portion 30 , and one end of the connecting rod 42 located inside the reinforcement portion 30 is connected to a support rod 43 , which is arranged parallel to the tooth top surface of the convex tooth portion 13 and spaced apart.

[0027] Preferably, the fixing rod 41 , the connecting rod 42 and the supporting rod 43 are perpendicular to each other.

[0028] In this solution, the support rod 43 is arranged in the reinforcement part 30 as a support member. It can provide support for the reinforcement part 30 in the groove depth direction of the connecting groove 131, thereby preventing the tendon claw 40 from being separated from the reinforcement part 30 as a whole, ensuring the stable connection between the tendon claw 40 and the reinforcement part 30, and preventing the reinforcement part 30 from falling off with the convex tooth part 13.

[0029] Combine Figure 6 、 7As shown, the length of the connecting groove 131 is parallel to that of the refractory brick receiving groove 11, and the groove cavity extends through the opposite end surface of the water jacket 10. When arranging the rib claw 40, the fixing rod 41 of the rib claw 40 can be inserted into the groove cavity of the connecting groove 131 from the end position of the connecting groove 131. The relative position of the fixing rod 41 in the connecting groove 131 is appropriately adjusted. The connection and fixing between the rib claw 40 and the protruding tooth portion 13 is quick and easy to operate. Similarly, the refractory brick 20 can be placed in the refractory brick receiving groove 11 in the same manner.

Claims

1. A flash furnace water jacket, wherein a water jacket (10) having a cooling pipe (12) disposed therein is provided with refractory brick receiving grooves (11) arranged at intervals on one side of the water jacket facing the furnace, wherein the area between two adjacent refractory brick receiving grooves (11) forms a convex tooth portion (13), and refractory bricks (20) are embedded in the refractory brick receiving grooves (11) and partially protrude to the outside of the refractory brick receiving grooves (11) along the groove depth direction, characterized in that: A reinforcement part (30) is filled in an open groove area surrounded by the tooth top surface of the convex tooth part (13) and the refractory bricks (20).

2. The flash furnace water jacket according to claim 1, characterized in that: The refractory brick accommodating groove (11) is a dovetail groove, and the refractory bricks (20) are arranged along the inclined groove wall of the refractory brick accommodating groove (11) on one side relative to the inclined groove wall of the refractory brick accommodating groove (11) and have the same inclination degree.

3. The flash furnace water jacket according to claim 1 or 2, characterized in that: A closing-shaped connecting groove (131) is provided on the tooth top surface of the convex tooth portion (13); a connecting portion (31) having a cross-sectional shape consistent with and matching that of the connecting groove (131) is provided on the reinforcing portion (30); and the connecting portion (31) is embedded in the connecting groove (131).

4. The flash furnace water jacket according to claim 3, characterized in that: A tendon claw (40) is provided inside the reinforcing portion (30). The tendon claw (40) includes a fixing rod (41). The rod body of the fixing rod (41) is built into the connecting groove (131) along the groove length direction of the connecting groove (131), and the rod diameter of the fixing rod (41) is larger than the diameter of the groove opening of the connecting groove (131).

5. The flash furnace water jacket according to claim 4, characterized in that: The fixing rod (41) is connected to a connecting rod (42) extending into the reinforcing portion (30). One end of the connecting rod (42) located inside the reinforcing portion (30) is connected to a supporting rod (43). The supporting rod (43) is arranged parallel to and spaced apart from the tooth top surface of the convex tooth portion (13).

6. The flash furnace water jacket according to claim 5, characterized in that: The rod bodies of the fixing rod (41), the connecting rod (42) and the supporting rod (43) are perpendicular to each other.

7. The flash furnace water jacket according to claim 4, characterized in that: The groove length direction of the connecting groove (131) is parallel to the groove length direction of the refractory brick accommodating groove (11), and the groove cavity passes through the opposite side end surface of the water jacket (10).

8. The flash furnace water jacket according to claim 1, characterized in that: The reinforcement part (30) is composed of refractory ramming material filled in an open groove area surrounded by the tooth top surface of the convex tooth part (13) and the refractory bricks (20).

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