Connecting chute device for side-blown converter and top-blown converter

Abstract

The utility model discloses a connecting chute device of side-blown furnace and top-blown furnace, including heatproof chute subassembly, water jacket chute subassembly, cooling water system and chute cover, heatproof chute subassembly includes shell, first flow groove and heatproof filling layer, water jacket chute subassembly includes water jacket chute and second flow groove, the heatproof filling layer includes the shell, first flow groove and heatproof filling layer. The first flow groove and the second flow groove both contain arc-shaped male and female matching structures and are connected with each other through the structures. The side, close to the side-blown converter, of the connecting chute device is a heat-resistant chute assembly, and the side, close to the top-blown converter, of the connecting chute device is a water jacket chute assembly. By adopting the chute connecting device, the chute cleaning frequency can be reduced in the production process, the labor intensity of workers is reduced, the problem that the head of the chute is damaged due to high temperature and scouring is solved, meanwhile, the connecting structure of the flowing groove can prevent deformation and dislocation, the leakage risk is reduced, the service life of the chute is prolonged, and the smelting cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of smelting industrial equipment, and in particular relates to a connecting chute device for a side-blown furnace and a top-blown furnace. Background Art

[0002] The statements in this section are merely intended to provide background information related to the technical solution of the present application to aid understanding, and they do not necessarily constitute prior art for the technical solution of the present application.

[0003] The steps carried out in the side-blown furnace are to smelt the copper concentrate to produce white matte with a purity of 70%-75%. The steps carried out in the top-blown furnace are to smelt the white matte produced by the side-blown furnace to produce crude copper with a purity of about 98.5%. The connecting chute device between the side-blown furnace and the top-blown furnace is a device for transporting the white matte produced by the side-blown furnace to the top-blown furnace for smelting.

[0004] At present, some connecting chute structures adopt an integral copper water jacket structure or an integral refractory masonry structure: the integral copper water jacket structure is equipped with a cooling water system. Due to the high grade and high viscosity of white matte copper, the material flow rate will slow down when the temperature is too low, and it is easy to accumulate, causing the chute to be blocked. In severe cases, the chute may even burst, increasing the difficulty of cleaning the chute and the loss of materials. The integral refractory masonry structure can solve the problems of material accumulation and blockage, but the chute head is easily damaged due to severe erosion due to high temperature, and it is difficult to replace it after damage and affects production. Utility Model Content

[0005] In order to solve the problems existing in the current connecting chute structure, the utility model provides a connecting chute device for a side-blown furnace and a top-blown furnace, which is as follows:

[0006] A connecting chute device for a side-blown furnace and a top-blown furnace, comprising a heat-resistant chute assembly, a water-jacket chute assembly, a cooling water system and a chute cover: the heat-resistant chute assembly comprises a shell, a first flow trough and a heat-resistant filling layer, wherein the shell is arranged at the outermost layer, the first flow trough is arranged at the innermost layer, and the heat-resistant filling layer is arranged between the shell and the first flow trough; the water-jacket chute assembly comprises a water-jacket chute and a second flow trough, wherein the water-jacket chute is arranged at the outer layer, the second flow trough is arranged at the inner layer, and the water-jacket chute The surface of the trough is provided with a water inlet and a water outlet, and a cooling water channel is provided in the water jacket chute; the heat-resistant chute assembly is connected to the discharge port of the side-blown furnace, the water jacket chute assembly is connected to the feed port of the top-blown furnace, and the water jacket chute assembly partially or completely extends into the top-blown furnace, the heat-resistant chute assembly and the water jacket chute assembly are detachably connected, and the chute cover is placed above the heat-resistant chute assembly and / or the water jacket chute assembly; the cooling water system is arranged at the feed port of the top-blown furnace, and is connected to the water inlet and outlet on the surface of the water jacket chute. The side-blown furnace discharge port end and the top-blown furnace feed port end form a certain angle of height difference, so that the connecting chute device is inclined, which is convenient for the smooth transportation of materials and not easy to pile up. Preferably, the inclination angle of the connecting chute device to the horizontal direction is 8°. All the flow grooves (the first flow groove and the second flow groove) in the connecting chute device are coaxial to form the chute channel.

[0007] Furthermore, the shell of the heat-resistant chute assembly is a steel shell, the heat-resistant filling layer is made of magnesia sand ramming material, the heat-resistant filling layer is formed by spreading the magnesia sand ramming material into the shell and tamping it, the first flow groove is a prefabricated part made of corundum or silicon carbide, and the shell and the first flow groove are U-shaped structures; wherein the number of shells is not less than 1 section, and the number of first flow grooves is not less than 1 section. The heat-resistant chute assembly adopts a multi-layer structure, which is conducive to increasing its strength and improving the life of the movable chute.

[0008] Furthermore, the water jacket chute in the water jacket chute assembly is a copper chute, and the second flow trough is a prefabricated part made of corundum or silicon carbide. The water jacket chute and the second flow trough are both U-shaped structures; wherein the number of the second flow troughs is not less than 1.

[0009] Specifically, the U-shaped structure is a U-shaped structure that is wide at the top and narrow at the bottom.

[0010] Preferably, the bottom arc of all flow trough channels is R100mm, the upper width is 350mm, the total height is 300mm, and the thickness is 100mm.

[0011] Furthermore, in the top-blown furnace, the second flow groove at the top of the water jacket chute assembly protrudes out of the water jacket chute by no less than 10 mm, and preferably, the second flow groove protrudes out of the water jacket chute by 30-50 mm.

[0012] Furthermore, the first flow groove and the second flow groove both contain arc-shaped male-female matching structures.

[0013] Furthermore, the specific connection method between the heat-resistant chute assembly and the water jacket chute assembly is: the shell in the heat-resistant chute assembly and the water jacket chute in the water jacket chute assembly are connected by flanges and bolts, and the first flow grooves, the second flow grooves, and the two adjacent sections of the first flow grooves and the second flow grooves are all connected by an arc-shaped male-female matching structure.

[0014] Furthermore, in the heat-resistant chute assembly part, the connection seam between the shells and the connection seam at the non-male-female matching structure between the first flow grooves are not in the same straight line. Thus, through the double fixed connection between the shell and the flow groove, and the connection stress points are staggered, the connection is more stable and firm.

[0015] Furthermore, the cooling water system includes a water supply main line, a return water main line, a water supply branch line, and a return water branch line, wherein the water supply main line is connected to the water inlet of the water jacket chute through the water supply branch line, the return water main line is connected to the water outlet of the water jacket chute through the return water branch line, and the water supply main line is connected to a water supply device.

[0016] Furthermore, a manual ball valve is provided on the water supply branch pipe, and a manual gate valve is provided on the water return branch pipe.

[0017] Compared with the prior art, the beneficial technical effects of the utility model are:

[0018] (1) The heat-resistant chute assembly at the side-blowing furnace end of the device is similar to a refractory masonry structure, which is composed of a plurality of flow troughs. The flow trough is a prefabricated part made of corundum or silicon carbide. Compared with the structure of refractory brick masonry, the construction is simpler and more durable. The frequency of cleaning the chute is reduced during the production process, which reduces the labor intensity of workers.

[0019] (2) The water jacket chute assembly at the top-blown furnace end of this device is similar to the copper water jacket structure. By setting up a cooling system, the problem of chute head damage caused by high temperature and erosion is solved, and the service life is increased. The service life can reach 2-3 years, which solves the problem of frequent chute replacement. Continuous production can be achieved without stopping the furnace, thus reducing costs and increasing efficiency.

[0020] (3) The heat-resistant chute assembly at the side-blowing furnace end of the device includes a shell arranged on the outer layer, a flow trough arranged on the inner layer, and a heat-resistant filling layer arranged between the shell and the flow trough. The heat-resistant chute assembly adopts a multi-layer structure, which is beneficial to increase its strength and improve the life of the movable chute.

[0021] (4) The flow groove in the present device is a semicircular groove structure with a male-female matching structure. The flow grooves are connected by the male-female matching structure, which can prevent the two flow grooves from deforming and misaligning, and can also increase their strength and reduce the risk of leakage caused by the enlarged gap after the two flow grooves are deformed and misaligned, thereby increasing the service life of the flow groove and reducing the smelting cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural cross-sectional diagram of a connecting chute device of the utility model in a specific implementation mode;

[0023] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0024] Figure 3 It is a front view of the connecting chute device of the utility model in a specific implementation mode;

[0025] Figure 4 It is a cross-sectional schematic diagram of the side-blown furnace discharge port of the connecting chute device of the utility model in a specific implementation manner;

[0026] Figure 5 It is a cross-sectional schematic diagram of the top-blown furnace feed port of the connecting chute device of the utility model in a specific implementation manner;

[0027] Figure 6 It is a top view of the top-blown furnace feed port of the connecting chute device of the utility model in a specific implementation manner;

[0028] Figure 7 It is a front view and a cross-sectional schematic diagram of a single-section flow trough (first flow trough or second flow trough) in the connecting chute device of the utility model in a specific implementation manner.

[0029] Among them, 1 is a side-blown furnace, 2 is a side-blown furnace discharge port, 3 is a top-blown furnace, 4 is a top-blown furnace feed port, 5 is a water jacket chute, 6 is a chute channel, 61 is a first flow trough, 62 is a second flow trough, 7 is a heat-resistant filling layer, 8 is a shell, 9 is a bolt, 10 is a fixed flange, 11 is a water supply main line, 12 is a water supply branch line, 13 is a manual ball valve, 14 is a manual gate valve, 15 is a return water branch line, 16 is a return water main line, 17 is a water jacket chute assembly, 18 is a heat-resistant chute assembly, 19 is a cooling water system, 20 is a chute cover, 21 is a water inlet, 22 is a water outlet, 23 is a cooling water channel, and 24 is a male and female matching structure. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0031] Reference Figure 1-4A connecting chute device for a side-blown furnace and a top-blown furnace, comprising: a water jacket chute assembly 17, a heat-resistant chute assembly 18, a cooling water system 19 and a chute cover 20, wherein the water jacket chute assembly 17 comprises a water jacket chute 5 and a second flow trough 62, wherein the water jacket chute 5 is arranged at the outermost layer, and the second flow trough 62 is arranged at the innermost layer. The heat-resistant chute assembly 18 comprises a first flow trough 61, a heat-resistant filling layer 7, and a shell 8, wherein the shell 8 is a U-shaped steel structure with a flange, and multiple shell sections are fixedly connected by bolts 9, wherein the shell 8 is arranged at the outermost layer, the first flow trough 61 is arranged at the innermost layer, and the heat-resistant filling layer 7 is arranged between the shell 8 and the first flow trough 61. A water inlet 21 and a water outlet 22 are provided on the outer surface of the water jacket chute 5, and a cooling water channel 23 is provided in the water jacket chute 5. The chute cover 20 is placed above the heat-resistant chute assembly 18 and / or the water jacket chute assembly 17 to avoid material overflow and air pollution. By arranging a ventilation duct (not shown in the figure) on the chute cover 20, the exhaust gas in the connected chute can be discharged.

[0032] The water jacket chute assembly 17 and the heat-resistant chute assembly 18 are fixedly connected by a fixing flange 10 and bolts 9. A plurality of flow grooves are arranged side by side along the same center line in the connecting chute device. All the first flow grooves 61 and the second flow grooves 62 in the connecting chute device coaxially form the chute channel 6.

[0033] The cooling water system 19 includes a water supply main pipeline 11 , a water supply branch pipeline 12 , a manual ball valve 13 , a manual gate valve 14 , a return water branch pipeline 15 , and a return water main pipeline 16 .

[0034] In one embodiment, the water jacket chute assembly 17 is made of T1 copper casting and processing, and the overall structure is a U-shaped structure that is wide at the top and narrow at the bottom. The cooling water channel with irregular passages, S-shaped passages or U-shaped passages is designed inside to achieve sufficient cooling. No connection fixing flange is required at the inner end of the furnace, and a connection fixing flange is provided at the outer end of the furnace. Multiple second flow grooves 62 (such as Figure 1 3 sections are shown), when installed, the second flow groove 62 should be firmly attached to the inner layer of the water jacket chute 5, and the length of the second flow groove 62 protruding from the water jacket chute 5 at the end of the water jacket chute assembly 17 in the top-blown furnace is 30-50mm, and every two sections of the flow grooves (between the first flow grooves, between the second flow grooves, and between two adjacent sections of the first flow grooves and the second flow grooves) are connected by the arc-shaped male-female matching structure 24 on the flow grooves.

[0035] In one embodiment, the heat-resistant chute assembly 18 includes a shell 8 disposed on the outer layer, a first flow groove 61 disposed on the inner layer, and a heat-resistant filling layer 7 disposed between the shell 8 and the first flow groove 61. The shell 8 is a steel shell with a U-shaped structure that is wide at the top and narrow at the bottom. The multi-section shell 8 (such as Figure 1The heat-resistant filling layer 7 is made of magnesia sand ramming material, which is spread flat in the shell 8 and compacted. The first flow channel 61 is assembled from multiple sections of prefabricated parts made of corundum or silicon carbide (such as Figure 1 8 sections are shown), and each two sections of the first flow grooves 61 are connected by the arc-shaped male and female matching structures 24 on the flow grooves. The heat-resistant chute assembly 18 adopts a multi-layer structure, which is beneficial to increase its strength and improve the life of the movable chute.

[0036] In one embodiment, the cooling water system 19 is supplied with water by a water supply device connected to the water supply main line 11. A water inlet 21 is provided at one end of the water jacket chute 5 and a water outlet 22 is provided at the other end. The cooling water enters the water jacket chute 5 through the water supply branch line 12 and the water inlet 21 in turn, and is then discharged from the water outlet 22 into the return water branch line 15 and returned to the return water main line 16. A manual ball valve 13 is provided on the water supply branch line 12 to control the water inlet flow rate, and a manual gate valve 14 is provided on the return water branch line 15 to control the water outlet flow rate. At the same time, the outlet water temperature can be monitored by providing a thermometer on the return water branch line, so that the outlet water flow rate can be controlled by using the manual gate valve 14, so that the cooling water temperature in the water jacket chute 5 is controlled within a certain range to adjust the cooling effect.

[0037] In one embodiment, the side-blown furnace discharge port 2 of the side-blown furnace 1 and the top-blown furnace feed port 4 of the top-blown furnace 3 form a height difference of a certain angle, one end of the connecting chute device is connected to the side-blown furnace discharge port 2, and the other end is embeddedly connected to the top-blown furnace feed port 4, the side-blown furnace 1 end is a heat-resistant chute assembly 18, and the top-blown furnace 3 end is a water jacket chute assembly 17. After installation, the water jacket chute assembly 17 extends beyond the feed port 4 by about 50-100mm, and the inclination angle of the connecting chute device to the horizontal direction is 8°.

[0038] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A connecting chute device for a side-blown furnace and a top-blown furnace, characterized in that: The invention comprises a heat-resistant chute assembly, a water jacket chute assembly, a cooling water system and a chute cover: the heat-resistant chute assembly comprises a shell, a first flow trough and a heat-resistant filling layer, wherein the shell is arranged at the outermost layer, the first flow trough is arranged at the innermost layer, and the heat-resistant filling layer is arranged between the shell and the first flow trough; the water jacket chute assembly comprises a water jacket chute and a second flow trough, wherein the water jacket chute is arranged at the outer layer, the second flow trough is arranged at the inner layer, and the surface of the water jacket chute is provided with a water inlet and Water outlet, a cooling water channel is arranged in the water jacket chute; the heat-resistant chute assembly is connected to the discharge port of the side-blown furnace, the water jacket chute assembly is connected to the feed port of the top-blown furnace, and the water jacket chute assembly partially or completely extends into the top-blown furnace, the heat-resistant chute assembly is detachably connected to the water jacket chute assembly, and the chute cover is placed above the heat-resistant chute assembly and / or the water jacket chute assembly; the cooling water system is arranged at the feed port of the top-blown furnace, and is connected to the water inlet and outlet on the surface of the water jacket chute.

2. The connecting chute device for the side-blown furnace and the top-blown furnace according to claim 1, characterized in that: The shell of the heat-resistant chute assembly is a steel shell, the heat-resistant filling layer is made of magnesia sand ramming material, the first flow trough is a prefabricated part made of corundum or silicon carbide, and the shell and the first flow trough are U-shaped structures; wherein the number of the shells is not less than 1 section, and the number of the first flow troughs is not less than 1 section.

3. The connecting chute device for the side-blown furnace and the top-blown furnace according to claim 1, characterized in that: The water jacket chute in the water jacket chute assembly is a copper chute, the second flow trough is a prefabricated part made of corundum or silicon carbide, and both the water jacket chute and the second flow trough are U-shaped structures; wherein the number of the second flow troughs is not less than 1.

4. The connecting chute device for the side-blown furnace and the top-blown furnace according to claim 1, characterized in that: In the top-blown furnace, the second flow groove at the top of the water jacket chute assembly protrudes out of the water jacket chute by no less than 10 mm.

5. The connecting chute device of the side-blown furnace and the top-blown furnace according to any one of claims 1 to 4, characterized in that: The first flow groove and the second flow groove both contain arc-shaped male-female matching structures.

6. The connecting chute device for the side-blown furnace and the top-blown furnace according to claim 5, characterized in that: The specific connection method between the heat-resistant chute assembly and the water jacket chute assembly is: the shell in the heat-resistant chute assembly and the water jacket chute in the water jacket chute assembly are connected by flanges and bolts, and the first flow grooves, the second flow grooves, and the two adjacent sections of the first flow grooves and the second flow grooves are all connected by an arc-shaped male-female matching structure.

7. The connecting chute device for the side-blown furnace and the top-blown furnace according to claim 6, characterized in that: In the heat-resistant chute assembly part, the connecting seam between the shells and the connecting seam at the non-male-female matching structure between the first flow grooves are not on the same straight line.

8. The connecting chute device for the side-blown furnace and the top-blown furnace according to claim 1, characterized in that: The cooling water system includes a water supply main line, a return water main line, a water supply branch line, and a return water branch line, wherein the water supply main line is connected to the water inlet of the water jacket chute through the water supply branch line, the return water main line is connected to the water outlet of the water jacket chute through the return water branch line, and the water supply main line is connected to a water supply device.

9. The connecting chute device for the side-blown furnace and the top-blown furnace according to claim 8, characterized in that: A manual ball valve is arranged on the water supply branch pipe, and a manual gate valve is arranged on the water return branch pipe.

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