Feeding device for smelting furnace

Abstract

The invention relates to the technical field of material water content detection in sulfur feeding, and provides a feeding device for a smelting furnace, the feeding device comprises a drying tank, a detection tank, a material temporary storage bin and a sulfur powder injection device, the drying tank comprises a drying tank body, stirring equipment arranged on the drying tank body and a heating assembly arranged in the drying tank body, the drying tank body is communicated with a steam discharge pipe, the detection tank comprises a detection tank body and a reheating assembly arranged in the detection tank body, two ends of the detection tank body are respectively provided with a detection inlet and a detection discharge port, and the detection inlet is communicated with the drying tank; the detection tank body is communicated with a detection gas pipe, one end of the detection gas pipe is communicated with a negative pressure source, the detection gas pipe is further communicated with a moisture detector, and the moisture detector is used for detecting the moisture content of gas in the gas pipe; and the material temporary storage bin is communicated with the detection discharge port. According to the invention, the simplicity and convenience of water content detection in the material transportation process are improved.

Description

Technical Field

[0001] The present application relates to the technical field of detecting the moisture content of materials in sulfur charging, and in particular to a charging device for a smelting furnace. Background Art

[0002] In the nickel smelting process, sulfur is an important raw material used to generate nickel sulfide, thereby improving nickel recovery and product quality. Sulfur feeding equipment plays a key role in this process, ensuring accurate, uniform and continuous supply of sulfur.

[0003] Sulfur is not easy to agglomerate or harden during transportation to the smelting furnace, and it is not easy to clumping or blocking the pipeline. The relevant technology provides a method for adding sulfur to the smelting furnace, which is to mix sulfur powder and coal powder in proportion, and to add carbon powder and sulfur for mixing, so as to change the fluidity of sulfur and allow the sulfur to fall smoothly. When adding sulfur to the smelting furnace, the water content of the mixed material must be detected and controlled. Otherwise, if the water content is too high, after the material is put into the smelting furnace, the evaporation of water will absorb a large amount of heat, making it difficult to control the temperature in the smelting furnace, affecting the generation and quality of nickel matte. In addition, the presence of water may increase the amount of slag generated and reduce the yield and purity of nickel matte.

[0004] However, in the current process of testing the moisture content of materials, infrared moisture meters, microwave moisture meters and other testing equipment are used to quickly test the moisture content of materials. However, when testing, it is necessary to sample the materials and evenly spread the samples on the sample tray. The operation steps are relatively cumbersome and are not suitable for moisture content testing during material transportation. Summary of the invention

[0005] In order to improve the convenience of detecting the moisture content of materials during material transportation, the present application provides a charging device for a smelting furnace.

[0006] The present application provides a charging device for a smelting furnace, which adopts the following technical solution: A charging device for a smelting furnace, comprising: A drying detector comprises a drying tank and a detection tank, wherein the drying tank comprises a drying tank body, a stirring device arranged on the drying tank body, and a heating component arranged in the drying tank body, the drying tank body is connected with a steam exhaust pipe, the detection tank comprises a detection tank body and a reheating component arranged in the detection tank body, both ends of the detection tank body are respectively provided with a detection inlet and a detection outlet, the detection inlet is connected with the drying tank; and the detection inlet and the detection outlet can be opened and closed, the detection tank body is connected with a detection air pipe, one end of the detection air pipe is connected with a negative pressure source, and the detection air pipe is also connected with a moisture detector, and the moisture detector is used to detect the water content of the gas in the detection air pipe; A temporary material storage bin is connected to the detection outlet; The sulfur powder blowing device is connected to the material temporary storage bin and is used for transporting the material in the material temporary storage bin to the smelting furnace.

[0007] By adopting the above technical scheme, when transporting materials, the mixed materials are put into the drying tank, and when a certain amount of materials enters the detection tank body from the drying tank; the detection inlet and the detection outlet of the detection tank body are closed, and the materials entering the detection tank body are heated and dried by the reheating component, so that the moisture in the materials evaporates into water vapor, and the negative pressure source is started to drive the gas containing water vapor in the detection tank body to enter the moisture detector along the detection air pipe, and the moisture detector detects the water content in the gas; if the water content is lower than the preset value, the moisture content of the material meets the standard, and the detection inlet and the detection outlet can be opened, and the reheating component is closed, so that the material flows into the material temporary storage bin along the drying tank body and the detection tank body in turn, and enters the smelting furnace to participate in nickel smelting under the action of the sulfur powder blowing device.

[0008] If the water content in the gas measured by the moisture detector exceeds the preset value, the water content of the material does not meet the standard; the gas with excessive water content in the test tank is discharged by using a negative pressure source, and then the heating component and the stirring equipment are started to evenly dry the material in the drying tank to reduce the water content in the material; during the drying process, the generated water vapor can be discharged along the steam exhaust pipe. After drying, the detection entrance is opened again, and a certain amount of material is discharged into the detection tank. The water content of the material in the detection tank is tested again until the measured water content of the material meets the standard, and then the detection outlet is opened to discharge the material into the temporary storage bin. To ensure that the water content of the material entering the smelting furnace meets the requirements, avoid affecting the temperature control and the quality of nickel matte during the smelting process due to excessive water. During the material transportation process, the material is dried, and the water content of the gas in the detection tank after drying is used to determine whether the water content of the material meets the standard. It is convenient to conduct multiple water content tests on the material, and the materials involved in the test can still enter the temporary storage bin for use.

[0009] Optionally, a cooling component is provided on the material temporary storage bin, and the cooling component includes a thermometer and a cold blowing network pipe, and a plurality of the thermometers are arranged at intervals on the material temporary storage bin, and the cold blowing network pipe is arranged in the material temporary storage bin, and the cold blowing network pipe is connected to a cold air supply pipe, and the cold air supply pipe is located outside the material temporary storage bin.

[0010] By adopting the above technical solution, the thermometer in the cooling component can monitor the material temperature in real time, and the temperature measured by the thermometer controls the cold blowing network pipe to fill the material temporary storage bin with cooling nitrogen, so as to fully cool the material in the temporary storage bin and ensure that the material is within the appropriate temperature range, thereby improving the stability of the material and reducing the safety hazards caused by excessive temperature.

[0011] Optionally, the sulfur powder blowing device includes a storage tank and a blowing tank that are interconnected, one end of the storage tank is connected to the material temporary storage bin, and a first opening and closing member and a second opening and closing member are provided on the storage tank, the first opening and closing member is used to control the connection and disconnection between the storage tank and the material temporary storage bin, and the second opening and closing member is used to control the connection and disconnection between the storage tank and the blowing tank; The bottom of the bottom wall of the blowing tank is connected to a feeder, the feeder is connected to a feeding pipe, the feeding pipe is connected to a blowing pipe; one end of the blowing pipe is connected to a purge air pipe, and the other end is connected to the smelting furnace.

[0012] By adopting the above technical solution, when the feeder on the bottom wall of the spray tank cooperates with the purge air pipe to spray materials into the smelting furnace, the first opening and closing part controls the storage tank to be connected with the temporary storage bin of the material, and the second opening and closing part controls the storage tank and the spray tank to no longer be connected, so that the temporary storage bin can replenish the material to the storage tank without affecting the normal feeding of the spray tank and the feeder. It ensures that the material can be continuously transported to the smelting furnace, and further improves the uniformity and stability of material transportation.

[0013] Optionally, it further includes a balancing pipe group, the balancing pipe group includes a first balancing pipe, a second balancing pipe and a third balancing pipe, the first balancing pipe is connected between the material temporary storage bin and the storage tank, and the second balancing pipe is connected between the storage tank and the spray tank; The first balance pipe is provided with a first on-off valve, and the second balance pipe is provided with a second on-off valve; One end of the third balance pipe is connected to the top of the spray tank, and the other end is connected to the feeder. The pipe section of the third balance pipe is also connected to a choke air pipe.

[0014] By adopting the above technical solution, the setting of the first balance pipe and the second balance pipe ensures the pressure balance between the material temporary storage bin, the storage tank and the spray tank, avoids the unstable material flow caused by the pressure difference, and improves the reliability and continuity of material transportation. The third balance pipe and the choke air pipe on it further optimize the pressure regulation between the spray tank and the feeder box, prevents the accumulation or blockage of materials due to pressure changes during the transportation process, and ensures the smooth transportation of materials. The setting of the first on-off valve and the second on-off valve realizes the precise control of the balance pipeline, which can be flexibly adjusted according to the actual working conditions to ensure the stable operation of the system.

[0015] Optionally, a bridge breaker is provided at the bottom of the material temporary storage bin, and the bridge breaker includes a side-blowing bridge-breaking pipe and a bridge-breaking nozzle that are connected, and the bridge-breaking nozzle is located in the material temporary storage bin.

[0016] By adopting the above technical solution, a bridge breaker is arranged at the bottom of the material temporary storage bin, including a connected side-blowing bridge-breaking pipe and a bridge-breaking nozzle. The bridge-breaking nozzle is located in the material temporary storage bin, which can effectively prevent the material from forming a bridge in the temporary storage bin, ensure the smooth flow of materials, and avoid the problem of poor transportation caused by material accumulation.

[0017] Optionally, one end of the blowing pipe is connected to a feeding nozzle, and one end of the feeding nozzle penetrates into the smelting furnace; the pipe section of the blowing pipe close to the smelting furnace is connected to a backblowing air pipe, and a pressure transmitter is provided on the pipe section of the blowing pipe between the feeding nozzle and the backblowing air pipe.

[0018] By adopting the above technical solution, the feeding nozzle can accurately deliver the material into the smelting furnace, ensuring uniform distribution of the material and avoiding local overheating or insufficient smelting. The setting of the back-blowing air pipe can prevent the backflow of materials on the one hand, and on the other hand, it can clear the blockage by reverse blowing when the injection pipe is blocked, ensuring the continuity and stability of material transportation. The pressure transmitter is used to monitor the pressure changes in the injection pipe in real time, detect and deal with blockages and other problems in time, and ensure the normal operation of the system.

[0019] Optionally, a plurality of first ears are provided on the outer side wall of the material temporary storage bin, and a first weighing device is provided below the first ears; A plurality of second ears are arranged on the outer side wall of the spray tank, and a second weighing device is arranged below the second ears.

[0020] By adopting the above technical solution, the first ear and the second ear can be respectively arranged on the outer side wall of the temporary storage bin and the spray tank, and the first weighing device and the second weighing device can be installed below them. In this way, the weight of the materials in the temporary storage bin and the spray tank can be monitored in real time, ensuring the accurate measurement and transportation of the materials, thereby improving the accuracy and stability of the feeding process.

[0021] Optionally, a material spreading tray is arranged in the detection tank body, and the reheating component comprises a hot air blowing pipe and a hot air blowing nozzle connected to one end of the hot air blowing pipe, and the hot air blowing nozzle is arranged toward the material spreading tray; A bulk material platform is connected to one side of the material spreading plate close to the detection entrance, and one end of the bulk material platform gradually shrinks toward the direction close to the detection entrance.

[0022] By adopting the above technical solution, the design of the spreading plate and the bulk material table helps to spread the material quickly after entering the detection tank, thereby increasing the accumulation surface area of ​​the material entering the detection tank, facilitating the reheating component to fully dry the material in the observation tank in a short time, and improving the accuracy and reliability of moisture detection.

[0023] Optionally, the detection discharge port is connected to a discharge pipe, and the discharge pipe is connected to the material temporary storage bin; a stop valve is provided on the discharge pipe, and the stop valve is used to control the connection and disconnection between the discharge pipe and the material temporary storage bin; The discharge pipe is also connected to a return pipe, one end of which is connected to the drying tank body. The return pipe is also provided with a material feeding source, which is used to transport the material in the return pipe to the drying tank body.

[0024] By adopting the above technical solution, the setting of the discharge pipe can discharge the tested materials into the material temporary storage bin to ensure the continuous supply of materials; at the same time, the materials that do not meet the standards can be returned to the drying tank for reprocessing under the action of the return pipe and the feed source to avoid waste and ensure the consistency of material quality.

[0025] Optionally, the material temporary storage bin, the storage tank and the top of the spray tank are all connected with a pressurized air pipe, and a check valve is provided on the pressurized air pipe.

[0026] By adopting the above technical solution, the material temporary storage bin, storage tank and the top of the spray tank are all connected with a pressurized air pipe, which can provide stable air pressure, help the material flow smoothly during the transportation process, reduce the risk of blockage, and improve the feeding efficiency. The setting of the check valve can also prevent the material from flowing back, further improving the safety of the system.

[0027] In summary, the present application includes at least one of the following beneficial effects: The drying detector in the present application avoids the cumbersome steps of sampling and laying samples required by the traditional method through the design of the drying tank and the detection tank, thereby improving the simplicity of moisture content detection; the combined use of the drying tank, the detection tank and the moisture detector can monitor the moisture content of the material in real time, ensure that the moisture content is adjusted in time during the transportation of the material, prevent excessive moisture from causing temperature fluctuations in the smelting furnace, and ensure the quality and yield of the nickel matte; The coordinated use of the temporary storage bin for materials and the sulfur powder injection device in the present application realizes efficient transmission and stable supply of materials, reduces losses in intermediate links, and improves the operating efficiency of the entire feeding system.

[0028] 3. A cooling component is provided in the present application. The thermometer in the cooling component can monitor the material temperature in the temporary material storage bin in real time. The temperature measured by the thermometer is used to control the cold blowing network pipe to fill the temporary material storage bin with cooling nitrogen, so as to comprehensively cool the material in the temporary material storage bin to improve the stability of the material and reduce the safety hazards caused by excessive temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the charging device for the smelting furnace of Example 1 of the present application; Figure 2 It is a schematic diagram showing the partial structure of the temporary storage bin of materials in Example 1 of the present application; Figure 3 It is a partial structural schematic diagram showing the sulfur powder blowing device in Example 1 of the present application; Figure 4 It is a schematic diagram of the overall structure of a charging device for a smelting furnace according to Example 2 of the present application; Figure 5 is a schematic diagram of the structure of the drying detector in Example 2 of the present application; Figure 6 It is a schematic diagram of the structure of the detection tank in Example 2 of the present application; Explanation of reference numerals: 1. drying tank; 11. drying tank body; 111. steam exhaust pipe; 12. stirring device; 13. heating component; 131. heating network pipe; 132. heater; 133. heating pipe; 14. air release valve; 2. detection tank; 21. detection tank body; 211. detection inlet; 212. detection outlet; 22. reheating component; 221. hot blowing air pipe; 222. hot blowing nozzle; 23. detection air pipe; 24. material spreading tray; 241. bulk material table; 25. return pipe; 26. material feeding source; 27. discharge pipe; 3. negative pressure source; 4. moisture detector; 5. material temporary storage bin; 51. cooling component; 511. thermometer; 512. cold blowing network pipe; 513. cooling air pipe; 52. first lug; 53. first weighing device; 54. first balance pipe; 541 , first on-off valve; 55, explosion relief valve; 56, dust collector; 6, sulfur powder spraying device; 61, storage tank; 611, first opening and closing piece; 612, second opening and closing piece; 62, spraying tank; 621, second lug; 622, second weighing device; 623, spraying pipe; 6231, feeding nozzle; 624, purge air pipe; 63, feeder; 631, feeding pipe; 64, backblowing air pipe; 65, pressure transmitter; 66, second balance pipe; 661, second on-off valve; 67, third balance pipe; 68, choke air pipe; 69, compressed nitrogen source; 7, feed assembly; 71, transport pump; 72, feed main pipe; 721, feed branch pipe; 8, bridge breaker; 81, side-blowing bridge breaker pipe; 82, bridge breaker nozzle; 9, pressurized air pipe; 91, check valve; 10, smelting furnace. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-6 This application is described in further detail. Example 1

[0031] Embodiment 1 of the present application provides a charging device for a smelting furnace.

[0032] Reference Figure 1 and Figure 2, a charging device for a smelting furnace provided in an embodiment of the present application comprises a feeding assembly 7, a temporary material storage bin 5 and a sulfur powder blowing device 6. In this embodiment, two temporary material storage bins 5 and sulfur powder blowing devices 6 are arranged on the side of the smelting furnace 10. The feeding assembly 7 comprises a transport pump 71 and a main feed pipe 72 connected to the transport pump 71, and one end of the feed branch pipe 721 away from the main feed pipe 72 is connected to the top of the temporary material storage bin 5. By starting the transport pump 71, the mixture of coal powder and sulfur powder can be transported to the temporary material storage bin 5. A high material level switch and a low material level switch are installed on the temporary material storage bin 5. The high material level switch is located at the top of the temporary material storage bin 5, and the detection end of the high material level switch is located in the temporary material storage bin 5; the high material level switch is arranged near the bottom of the temporary material storage bin 5, and the detection end of the low material level switch is located in the temporary material storage bin 5. The high material level switch and the low material level switch are both connected to the transport pump 71 by telecommunication, or establish communication with the transport pump 71 and are controlled by the control system; by detecting the material level information in the material temporary storage bin 5, the operating state of the transport pump 71 is controlled so that the material amount in the material temporary storage bin 5 is within an appropriate range.

[0033] Reference Figure 2 The top of the temporary material storage bin 5 is also connected to an explosion relief valve 55 and a dust collector 56. A plurality of first ears 52 are fixed on the outer wall of the temporary material storage bin 5. A first weighing device 53 is installed below the first ears 52 to monitor the weight of the materials in the temporary material storage bin 5. In this embodiment, a first ear 52 is provided on both sides of the temporary material storage bin 5.

[0034] Reference Figure 2 , the material temporary storage bin 5 is also provided with a cooling component 51, the cooling component 51 includes a thermometer 511 and a cold blowing network pipe 512, and the thermometer 511 is arranged at intervals along the height direction of the material temporary storage bin 5 for real-time monitoring of the material temperature. In this embodiment, the thermometer 511 is specifically set as a thermometer, and three are arranged on the material temporary storage bin 5. The cold blowing network pipe 512 is arranged in the material temporary storage bin 5, and one end of the cold blowing network pipe 512 is passed through the outside of the material temporary storage bin 5 and connected to a cold air supply pipe 513, and the cold blowing network pipe 512 can be connected to a cold air source through the cold air supply pipe 513. When the temperature detected by the thermometer 511 exceeds the preset value, low-temperature nitrogen is input into the material temporary storage bin 5 through the cold air supply pipe 513, which can effectively reduce the material temperature, control the temperature in the material temporary storage bin 5 to be kept below 80°C, and prevent overheating.

[0035] Reference Figure 2In order to allow the material in the temporary material storage bin 5 to be discharged smoothly, the width of the end of the temporary material storage bin 5 away from the feed branch pipe 721 gradually shrinks in the direction away from the feed branch pipe 721, and a bridge breaker 8 is also provided at the bottom of the temporary material storage bin 5. The bridge breaker 8 includes a side-blowing bridge-breaking pipe 81 and a bridge-breaking nozzle 82, and the bridge-breaking nozzle 82 is located in the temporary material storage bin 5; when the material inside the temporary material storage bin 5 forms a bridge, nitrogen is introduced into the temporary material storage bin 5 through the side-blowing bridge-breaking pipe 81 to break up the material bridge and ensure smooth flow of the material. In this embodiment, a plurality of side-blowing bridge-breaking pipes 81 are provided in the bridge breaker 8, and a plurality of bridge-breaking nozzles 82 are also provided corresponding to the side-blowing bridge-breaking pipes 81, and the plurality of side-blowing bridge-breaking pipes 81 are arranged at intervals along the axis of the temporary material storage bin 5.

[0036] Reference Figure 1 and Figure 3 The sulfur powder spraying device 6 includes a storage tank 61 and a spraying tank 62. The storage tank 61 includes a storage inlet at the top and a storage outlet at the bottom. The spraying tank 62 includes a feed port and a discharge port at the top. The storage inlet is connected to the bottom of the temporary storage bin 5 through a pipeline, and the storage outlet is connected to the feed port of the spraying tank 62 through a pipeline. A first opening and closing member 611 is installed at the storage inlet, and a second opening and closing member 612 is installed at the storage outlet; the first opening and closing member 611 and the second opening and closing member 612 are both set as switch valves, the first opening and closing member 611 is used to control the connection and disconnection between the storage tank 61 and the temporary storage bin 5, and the second opening and closing member 612 is used for the connection and disconnection between the storage tank 61 and the spraying tank 62. The discharge port of the spraying tank 62 is connected to a feeder 63. A plurality of second ears 621 are fixed on the outer wall of the spraying tank 62. In this embodiment, a second ear 621 is provided on both sides of the spraying pipe. A second weighing device 622 is provided below the second lug 621 to monitor the weight of the material in the spray tank 62. The first weighing device 53 and the second weighing device 622 cooperate with each other to achieve quantitative feeding. In this embodiment, the feeder 63 is specifically configured as a vertical rotary feeder 63.

[0037] Reference Figure 3 A high material level switch is installed on the top of the storage tank 61, and a low material level switch is installed in the middle of the spray tank 62; the high material level switch on the storage tank 61 is connected to the first opening and closing member 611 by telecommunication, and the low material level switch on the spray tank 62 is connected to the second opening and closing member 612 by telecommunication. Through the material level information in the storage tank 61 and the spray tank 62, the material flowing into the storage tank 61 is stopped in time, and the material is supplied to the spray tank 62 in time.

[0038] Reference Figure 3In this embodiment, the bottom of the blowing tank 62 is integrally formed with two discharge ports, and two feeders 63 are also provided accordingly. Each feeder 63 is connected to a feed pipe 631, and the feed pipe 631 is connected to a blowing material pipe 623. One end of the blowing material pipe 623 is connected to a purge air pipe 624, and the other end is connected to the smelting furnace 10. In this embodiment, three feed pipes 631 are connected to one feeder 63; six blowing material pipes 623 are arranged at intervals, and the feed pipes 631 are connected to the blowing material pipes 623 one by one. Correspondingly, six purge air pipes 624 are also provided, and each purge air pipe 624 is installed with a pressure transmitter 65 and an air valve. One end of the blowing material pipe 623 is connected to a feed nozzle 6231, and one end of the feed nozzle 6231 penetrates into the smelting furnace 10, which is used to spray the material into the smelting furnace 10 evenly. In actual use, it is necessary to keep the liquid level in the smelting furnace 10 higher than the height of all the feeding nozzles 6231, so that the sulfur can quickly merge with the molten liquid in the smelting furnace 10, so as to be fully reacted, thereby greatly improving the utilization rate of the sulfur.

[0039] Reference Figure 3 , bridge breakers 8 are also installed on the storage tank 61 and the spray tank 62, and two bridge breakers 8 are installed on the spray tank 62. The bridge breakers 8 on the spray tank 62 are arranged close to the discharge port, and the bridge breakers 8 are arranged one by one.

[0040] In order to further promote the smooth discharge of materials in the temporary storage bin 5, the storage tank 61 and the blowing pipe, a balance pipe group and a pressurized air pipe 9 are also provided. The balance pipe group includes a first balance pipe 54, a second balance pipe 66 and a third balance pipe 67. The first balance pipe 54 is connected between the temporary storage bin 5 and the storage tank 61, the second balance pipe 66 is connected between the storage tank 61 and the blowing tank 62, and one end of the third balance pipe 67 is connected to the top of the blowing tank 62, and the other end is connected to the feeder 63. Manual stop valves and pneumatic valves are installed on the first balance pipe 54, the second balance pipe 66 and the third balance pipe 67. In this embodiment, three third balance pipes 67 are connected to each feeder 63. The pipe sections of each third balance pipe 67 are also connected to a choke air pipe 68; after the third balance pipe 67 has been used for a period of time, part of the material in the spray tank 62 will enter the third balance pipe 67. At this time, nitrogen is blown into the third balance pipe 67 through the choke air pipe 68 to blow out the material entering the third balance pipe 67, thereby preventing the third balance pipe 67 from being blocked by material.

[0041] The tops of the temporary material storage bin 5, the storage tank 61 and the spray tank 62 are all connected with a pressurized air pipe 9, and a check valve 91 is installed on the pressurized air pipe 9 to prevent gas backflow and ensure stable operation of the system.

[0042] Reference Figure 3, each blowing material pipe 623 is connected to a back-blowing air pipe 64 on the pipe section close to the smelting furnace 10 to prevent material blockage. A pressure transmitter 65 is provided on the pipe section of the blowing material pipe 623 between the feeding nozzle 6231 and the back-blowing air pipe 64 to monitor the pressure in the blowing material pipe 623. When the pressure transmitter 65 on the blowing material pipe 623 detects that the pressure in the blowing material pipe 623 is too high, there is a certain blockage between the blowing material pipe 623 and the feeding nozzle 6231. At this time, high-pressure nitrogen is introduced into the blowing material pipe 623 through the back-blowing air pipe 64 to deal with blockage and other problems and ensure the normal operation of the system. A manual stop valve and a pneumatic valve are installed on each back-blowing air pipe 64 to control the connection and disconnection between the back-blowing air pipe 64 and the blowing material pipe 623.

[0043] In order to facilitate the gas supply to the system, a compressed nitrogen gas source 69 is also provided, and each cooling gas pipe 513 , purge gas pipe 624 , side blow bridge breaking pipe 81 , choke gas pipe 68 and back blow gas pipe 64 are connected to the compressed nitrogen gas source 69 .

[0044] The implementation principle of a charging device for a smelting furnace in the embodiment of the present application is as follows: the material obtained by mixing coal powder and sulfur powder is transported to the material temporary storage bin 5 through the feeding component 7. When the high material level switch in the material temporary storage bin 5 detects that the material in the material temporary storage bin 5 reaches the highest preset value, the feeding component 7 stops operating, opens the first opening and closing member 611, and allows the material in the material temporary storage bin 5 to flow into the storage tank 61. When the high material level switch in the storage tank 61 detects that the material exceeds the preset value, the first opening and closing member 611 is closed, and the second opening and closing member 612 is opened, so that the material in the discharge pipe flows into the spray tank 62, and the material in the spray tank 62 is transported to the spray material pipe 623 under the action of the feeder 63; at this time, the air valve on the purge air pipe 624 is opened, so that the compressed nitrogen gas source 69 passes high-pressure nitrogen into the purge air pipe 624, and the material flowing into the spray material pipe 623 is blown into the smelting furnace 10, so as to achieve continuous, stable and precise spraying without blockage or interruption. Example 2

[0045] Embodiment 2 of the present application provides a charging device for a smelting furnace.

[0046] Reference Figure 4 and Figure 5 , the difference between Example 2 of the present application and Example 1 is that: It also includes a drying detector, which includes a drying tank 1 and a detection tank 2. The drying tank 1 is located above the detection tank 2, and the two are connected by a pipeline. The drying tank 1 includes a drying tank body 11, a stirring device 12 and a heating component 13. The feed branch pipe 721 is connected to the drying tank body 11, and the stirring device 12 can use an electric stirrer or a pneumatic stirrer to make the material in the drying tank body 11 evenly heated during the drying process. The heating component 13 is specifically configured as a heating network pipe 131 in the drying tank body 11, and the heating network pipe 131 is arranged in multiple groups around the axis of the drying tank body 11. The heating network pipe 131 is connected to a heating pipe 133, and a heater 132 is connected in the pipe section of the heating pipe 133, and the end of the heating pipe 133 away from the drying tank body 11 is connected to a compressed nitrogen gas source 69. The heater 132 heats the nitrogen flowing into the heating pipe 133 and discharges it into the heating network pipe 131. In this embodiment, the temperature of the nitrogen in the heating pipe 133 is controlled to be in the range of 100-110°C.

[0047] Reference Figure 5 The top of the drying tank 11 is also connected to a steam exhaust pipe 111, which is used to exhaust the water vapor generated during the drying process and maintain a dry environment in the tank. A vent valve 14 is installed on the steam exhaust pipe 111 to control the connection and disconnection of the steam exhaust pipe 111 with the outside world. The nitrogen entering the drying tank 11 through the heating network pipe 131 dries the moisture in the material on the one hand, and promotes the water vapor generated after drying to be discharged from the drying tank 11 on the other hand.

[0048] Reference Figure 4 and Figure 6 The detection tank 2 includes a detection tank body 21 and a reheating component 22. A detection inlet 211 and a detection outlet 212 are respectively provided at both ends of the detection tank body 21. The detection inlet 211 and the detection outlet 212 can be opened or closed by controlling a solenoid valve or a manual valve. The detection outlet 212 is connected to the material temporary storage bin 5 through a pipeline. A feed pump can be provided on the pipeline connecting the detection outlet 212 and the material temporary storage bin 5 to transport the material in the detection tank body 21 to the material temporary storage bin 5. The detection tank body 21 can also be provided above the material temporary storage bin 5 so that the material naturally falls into the detection tank body 21. Refer to Figure 5 The detection tank 21 is also connected to a detection air pipe 23, one end of the detection air pipe 23 is connected to a negative pressure source 3, and the other end is connected to a moisture detector 4. The detection outlet 212 is connected to a discharge pipe 27, and the discharge pipe 27 is connected to the material temporary storage bin 5. A stop valve is provided on the discharge pipe 27 to control the connection and disconnection between the discharge pipe 27 and the material temporary storage bin 5. Figure 5, the discharge pipe 27 is also connected to a return pipe 25, one end of which is connected to the drying tank body 11, and a feed source 26 is installed on the return pipe 25. The detection tank body 21 is also connected to a pressurized air pipe 9. When the material in the detection tank body 21 needs to be transported back to the drying tank body 11, high-pressure nitrogen is introduced into the detection air pipe 23 through the pressurized air pipe 9 to purge the material in the detection tank body 21, so that the material is concentrated at the detection discharge port 212; the material enters the discharge pipe 27 along the detection discharge port 212, and the feed source 26 is started to transport the material in the discharge pipe 27 along the return pipe 25 to the drying tank body 11. In this embodiment, the feed source 26 is specifically configured as a feed pump, and the re-pressure source is specifically configured as an air pump.

[0049] Reference Figure 6 The reheating component 22 includes a hot air blowing pipe 221 and a hot air blowing nozzle 222. High-temperature nitrogen is passed into the hot air blowing nozzle 222 along the hot air blowing pipe 221, and the hot air blowing nozzle 222 sprays high-temperature nitrogen toward the material in the detection tank body 21, so that the moisture on the surface of the material evaporates quickly. A material spreading tray 24 is fixed in the detection tank body 21, and a bulk material table 241 is fixedly connected to the side of the material spreading tray 24 close to the detection inlet 211; one end of the bulk material table 241 gradually shrinks toward the direction close to the detection inlet 211, which helps the material to be evenly distributed on the material spreading tray 24 after falling onto the material spreading tray 24. A plurality of hot air blowing nozzles 222 are arranged in the observation tank body, and each hot air blowing nozzle 222 is arranged toward the material spreading tray 24. Correspondingly, a plurality of hot air blowing pipes 221 are also arranged.

[0050] The implementation principle of a feeding device for a smelting furnace in Example 2 of the present application is as follows: the mixed material is put into the drying tank 1 under the action of the feeding component 7, and when a certain amount of material enters the detection tank body 21 from the drying tank 1; the detection inlet 211 and the detection outlet 212 of the detection tank body 21 are closed, and the material entering the detection tank body 21 is heated and dried by the reheating component 22, so that the moisture in the material evaporates into water vapor, and the negative pressure source 3 is started to drive the gas containing water vapor in the detection tank body 21 to enter the moisture detector 4 along the detection air pipe 23, and the moisture detector 4 detects the water content in the gas; if the water content is lower than the preset value, the moisture content of the material meets the standard, and the detection inlet 211 and the detection outlet 212 can be opened, and the reheating component 22 is closed, so that the material flows into the material temporary storage bin 5 along the drying tank body 11 and the detection tank body 21 in turn, and enters the smelting furnace 10 under the action of the sulfur powder blowing device 6 to participate in nickel smelting.

[0051] If the water content in the gas measured by the moisture detector 4 exceeds the preset value, the water content of the material does not meet the standard; the gas with excessive water content in the detection tank 21 is discharged by the negative pressure source 3, and then the heating component 13 and the stirring device 12 are started to evenly dry the material in the drying tank 11 to reduce the water content in the material; during the drying process, the generated water vapor can be discharged along the steam exhaust pipe 111. After the drying is completed, the detection inlet 211 is opened again, and after a certain amount of material is discharged into the detection tank 21, the water content of the material in the detection tank 21 is tested again until the measured water content of the material meets the standard, and then the detection outlet 212 is opened to discharge the material into the temporary storage bin 5. To ensure that the water content of the material entering the smelting furnace 10 meets the requirements, avoid affecting the temperature control and the quality of nickel matte during the smelting process due to excessive water. During the material transportation process, the material is dried, and the water content of the gas in the detection tank 2 after drying is used to determine whether the water content of the material meets the standard. It is convenient to carry out multiple moisture content tests on the materials, and the materials involved in the tests can still enter the material temporary storage bin 5 for use.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A charging device for a smelting furnace, characterized in that: include: A drying detector comprises a drying tank (1) and a detection tank (2), wherein the drying tank (1) comprises a drying tank body (11), a stirring device (12) arranged on the drying tank body (11), and a heating component (13) arranged in the drying tank body (11), the drying tank body (11) being connected to a steam exhaust pipe (111), the detection tank (2) comprising a detection tank body (21) and a reheating component (22) arranged in the detection tank body (21), and two ends of the detection tank body (21) are respectively provided with A detection inlet (211) and a detection outlet (212) are provided, the detection inlet (211) being connected to the drying tank (1); and the detection inlet (211) and the detection outlet (212) can both be opened and closed; the detection tank body (21) is connected to a detection air pipe (23); one end of the detection air pipe (23) is connected to a negative pressure source (3); the detection air pipe (23) is also connected to a moisture detector (4); the moisture detector (4) is used to detect the moisture content of the gas in the detection air pipe (23); A material temporary storage bin (5) connected to the detection outlet (212); The sulfur powder blowing device (6) is connected to the material temporary storage bin (5) and is used to transport the material in the material temporary storage bin (5) to the smelting furnace (10).

2. A charging device for a smelting furnace according to claim 1, characterized in that: The material temporary storage bin (5) is provided with a cooling component (51), the cooling component (51) comprising a thermometer (511) and a cold blowing network pipe (512), a plurality of the thermometers (511) are arranged at intervals on the material temporary storage bin (5), the cold blowing network pipe (512) is arranged in the material temporary storage bin (5), and the cold blowing network pipe (512) is connected to a cold air supply pipe (513), and the cold air supply pipe (513) is located outside the material temporary storage bin (5).

3. A charging device for a smelting furnace according to claim 2, characterized in that: The sulfur powder spraying device (6) comprises a storage tank (61) and a spraying tank (62) which are interconnected, one end of the storage tank (61) is connected to the material temporary storage bin (5), and a first opening and closing member (611) and a second opening and closing member (612) are provided on the storage tank (61), the first opening and closing member (611) is used to control the connection and disconnection between the storage tank (61) and the material temporary storage bin (5), and the second opening and closing member (612) is used to control the connection and disconnection between the storage tank (61) and the spraying tank (62); The bottom of the bottom wall of the blowing tank (62) is connected to a feeder (63), the feeder (63) is connected to a feeding pipe (631), and the feeding pipe (631) is connected to a blowing pipe (623); one end of the blowing pipe (623) is connected to a purge air pipe (624), and the other end is connected to the smelting furnace (10).

4. A charging device for a smelting furnace according to claim 3, characterized in that: It also includes a balancing pipe group, the balancing pipe group includes a first balancing pipe (54), a second balancing pipe (66) and a third balancing pipe (67), the first balancing pipe (54) is connected between the material temporary storage bin (5) and the material storage tank (61), and the second balancing pipe (66) is connected between the material storage tank (61) and the spray tank (62); The first balancing pipe (54) is provided with a first on-off valve (541), and the second balancing pipe (66) is provided with a second on-off valve (661); One end of the third balance pipe (67) is connected to the top of the spray tank (62), and the other end is connected to the feeder (63). The pipe section of the third balance pipe (67) is also connected to a choke air pipe (68).

5. A charging device for a smelting furnace according to claim 1, characterized in that: A bridge breaker (8) is provided at the bottom of the temporary material storage bin (5), wherein the bridge breaker (8) comprises a side-blowing bridge-breaking pipe (81) and a bridge-breaking nozzle (82) which are connected to each other, and the bridge-breaking nozzle (82) is located in the temporary material storage bin (5).

6. A charging device for a smelting furnace according to claim 3, characterized in that: One end of the blowing pipe (623) is connected to a feeding nozzle (6231), and one end of the feeding nozzle (6231) penetrates into the smelting furnace (10); a pipe section of the blowing pipe (623) close to the smelting furnace (10) is connected to a back-blowing air pipe (64), and a pressure transmitter (65) is provided on the pipe section of the blowing pipe (623) located between the feeding nozzle (6231) and the back-blowing air pipe (64).

7. A charging device for a smelting furnace according to claim 3, characterized in that: A plurality of first ears (52) are arranged on the outer side wall of the material temporary storage bin (5), and a first weighing device (53) is arranged below the first ears (52); A plurality of second support ears (621) are arranged on the outer side wall of the spray tank (62), and a second weighing device (622) is arranged below the second support ears (621).

8. A charging device for a smelting furnace according to claim 1, characterized in that: A material spreading plate (24) is arranged in the detection tank body (21), and the reheating component (22) comprises a hot air blowing pipe (221) and a hot air blowing nozzle (222) connected to one end of the hot air blowing pipe (221), and the hot air blowing nozzle (222) is arranged toward the material spreading plate (24); A material dispersing platform (241) is connected to one side of the material spreading plate (24) close to the detection entrance (211), and one end of the material dispersing platform (241) gradually shrinks in a direction close to the detection entrance (211).

9. A charging device for a smelting furnace according to claim 1, characterized in that: The detection discharge port (212) is connected to a discharge pipe (27), and the discharge pipe (27) is connected to the material temporary storage bin (5); a stop valve is provided on the discharge pipe (27), and the stop valve is used to control the connection and disconnection between the discharge pipe (27) and the material temporary storage bin (5); The discharge pipe (27) is also connected to a return pipe (25), one end of which is connected to the drying tank body (11). The return pipe (25) is also provided with a material transport source (26), and the material transport source (26) is used to transport the material in the return pipe (25) to the drying tank body (11).

10. A charging device for a smelting furnace according to claim 7, characterized in that: The material temporary storage bin (5), the material storage tank (61) and the top of the spray tank (62) are all connected to a pressurized air pipe (9), and a check valve (91) is provided on the pressurized air pipe (9).

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