Oxygen-enriched side-blown molten pool smelting furnace
By setting up the raw material room and smelting room in the fuse of the oxygen -rich side melting pond, and using the partition wall and spray gun technology, the problem of the unable to achieve the problem of low continuous feeding and heating efficiency of the existing furnace has been solved. Leading cream treatment and the use of coal fuel.
Patent Information
- Application Number
- CN202323303956.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-05
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2033-12-05
AI Technical Summary
The existing oxygen-rich side blown melting furnace cannot achieve continuous discharge, the heating rate and heat utilization rate of coal particles solid fuel are low, and the melt temperature is not easy to maintain.
Design a meoxic -rich side blowing pond melting furnace. By setting up the raw material room and smelting room in the furnace body, and using technical means such as partition walls, gas side blowing guns, and flour -side blowjet guns Switchry, improve the heating rate and thermal utilization rate, and facilitate the maintenance of the melt temperature.
The continuous feeding and continuous smelting are realized, the processing capacity and heating rate and thermal utilization rate of coal particle solid fuel are improved, and the maintenance of the melt temperature is simplified.
Smart Images
Figure CN222418509U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of nonferrous metal smelting, in particular to an oxygen-enriched side-blowing molten pool smelting furnace. Background Art
[0002] At present, the smelting furnace types for processing lead paste include reverberatory furnace, blast furnace, bottom blowing furnace, Kaldo furnace, Isa furnace, etc. With the widespread application of oxygen-enriched side-blown molten pool smelting furnace in the fields of lead smelting and copper smelting, it has the advantages of strong adaptability, simple operation, large processing capacity, safety and environmental protection. Oxygen-enriched side-blown molten pool smelting furnace has been applied to waste lead paste treatment, sludge harmless treatment and other hazardous waste disposal and other small metal smelting fields.
[0003] However, as the types of processed materials and the properties of metals change, in the process of treating waste lead paste in the existing oxygen-enriched side-blown molten pool smelting furnace, the treatment of waste lead paste needs to be operated in stages and cycles, and continuous unloading cannot be achieved, which increases the difficulty of subsequent treatment of the flue gas generated; and the oxygen-enriched side-blown molten pool smelting furnace uses coal particle solid fuel to add into the furnace body from the furnace top unloading port for heating, which makes it impossible to guarantee the heating rate and heat utilization rate of the coal particle solid fuel, and the temperature of the melt is also difficult to maintain. Summary of the invention
[0004] The utility model provides an oxygen-enriched side-blowing molten pool smelting furnace to solve the problems that the existing oxygen-enriched side-blowing molten pool smelting furnace cannot be continuously unloaded, the heating rate and heat utilization rate of the coal particle solid fuel are low, and the temperature of the melt is difficult to maintain. The utility model can ...
[0005] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is: an oxygen-enriched side-blown molten pool smelting furnace, comprising a furnace body and a furnace cylinder arranged at the bottom of the furnace body, the furnace body is surrounded by a water jacket assembly, a raw material chamber and a smelting chamber are arranged inside the furnace body, a top water jacket is arranged on the top of the raw material chamber, a raw material chamber feeding port is arranged on the top water jacket, and a molten pool feeding port communicating with the raw material chamber is arranged on one side of the furnace body; a flue gas outlet and a smelting chamber feeding port are arranged on the top of the smelting chamber, raw materials to be processed can be added to the raw material chamber through the raw material chamber feeding port, the flue gas generated by smelting the raw materials can be discharged from the flue gas outlet, and auxiliary materials such as reducing agents required for smelting the raw materials can be added to the smelting chamber through the smelting chamber feeding port.
[0006] A partition wall is fixedly arranged between the raw material chamber and the smelting chamber, and a molten pool connecting channel is opened at the bottom of the partition wall, and a flue gas connecting channel is opened at the top; a plurality of gas side-blowing spray guns and pulverized coal side-blowing spray guns are arranged at intervals at the lower part of the furnace body, and pulverized coal fuel can be blown into the furnace body through the pulverized coal side-blowing spray gun, and gas can be sprayed into the furnace body through the gas side-blowing spray gun.
[0007] The furnace hearth includes a refractory brick layer and a guard plate, the guard plate is arranged on the outside of the refractory brick layer, and the furnace hearth is provided with a siphon port, a first safety discharge port and a second safety discharge port connected to the smelting chamber. When the molten raw material solution cannot be discharged from the siphon port, the processed melt and slag can be discharged through the first safety discharge port and the second safety discharge port.
[0008] Furthermore, the water jacket assembly includes a second layer of water jacket, a third layer of water jacket and a fourth layer of water jacket arranged in sequence from top to bottom, a first layer of water jacket is also arranged above the smelting chamber, a water jacket is also arranged on the top of the first layer of water jacket, and the smelting chamber feeding port is arranged at the water jacket.
[0009] Furthermore, a plurality of secondary air inlets are arranged at intervals on both sides of the smelting chamber, and the secondary air inlets are located on the second water jacket; a slag discharge port located on the fourth water jacket is also opened on one side of the smelting chamber, and air can be introduced into the furnace body through the secondary air inlets to burn the incompletely burned CO completely, so that the combustion heat can increase the temperature in the furnace body as much as possible, thereby improving the utilization rate of the fuel.
[0010] Furthermore, the gas side-blowing lance and the pulverized coal side-blowing lance are both arranged on the fourth water jacket, and the front ends of the gas side-blowing lance and the pulverized coal side-blowing lance extend into the furnace body.
[0011] Furthermore, a furnace water jacket is provided on the top of the furnace, and the height of the first safety outlet is higher than that of the second safety outlet, so that the slag can be discharged from the first safety outlet and the recovered melt can be discharged from the second safety outlet.
[0012] Furthermore, a furnace body steel frame structure is provided on the outside of the furnace body, and the furnace body steel frame structure includes a plurality of steel columns arranged at intervals on the outside of the furnace body, a plurality of the steel columns are fixedly provided with cross beams, a plurality of connecting rods are arranged on the cross beams, one end of the connecting rods is connected to the cross beam, and the other end is connected to the water jacket assembly, and the furnace body steel frame structure is used to stably support the furnace body.
[0013] Through the above technical solution, the beneficial effects of the utility model are:
[0014] The utility model has a reasonable structure and good use effect, can achieve the effect of continuous feeding and continuous smelting, can improve the processing capacity of raw materials, can improve the heating rate and heat utilization rate of solids, and is convenient for maintaining the temperature of the melt.
[0015] The utility model divides the furnace body into a raw material chamber and a smelting chamber by a partition wall, so that the steps of melting, decomposing and reducing smelting of the raw materials can be completed in different functional areas inside the furnace body, thereby realizing the process of continuous feeding and continuous smelting, increasing the processing capacity for raw materials, and eliminating intermittent periodic operations. At the same time, under the action of the smoke connecting channel on the partition wall, the problem of subsequent smoke being difficult to process due to smoke fluctuations is solved, wherein the smoke generated by the melting and decomposition can enter the smelting chamber through the smoke connecting channel, and then be discharged to the outside of the furnace body through the smoke outlet.
[0016] The utility model delivers fuel and combustion-supporting gas into the raw material chamber and the smelting chamber through the gas side-blowing spray gun and the pulverized coal side-blowing spray gun, and adopts the enhanced heating mode of directly delivering the fuel and combustion-supporting gas into the molten pool, which can effectively improve the heat utilization efficiency, accelerate the reaction rate, and heat up quickly, melt the raw materials quickly, reduce the viscosity of the melt in the molten pool, and solve the problems of slow heating up of the molten pool and difficulty in maintaining the melt temperature. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the structure of an oxygen-enriched side-blowing molten pool smelting furnace of the utility model. Figure 1 ;
[0018] Figure 2 This is a schematic diagram of the structure of an oxygen-enriched side-blowing molten pool smelting furnace of the utility model. Figure 2 .
[0019] The numbers in the accompanying drawings are: 1 is a furnace hearth, 101 is a guard plate, 102 is a refractory brick layer, 103 is a slag discharge port, 104 is a siphon port, 105 is a safety discharge port 1, 106 is a safety discharge port 2, 2 is a furnace body, 201 is a charging port for making a molten pool, 3 is a partition wall, 4 is a first layer of water jacket, 5 is a second layer of water jacket, 6 is a third layer of water jacket, 7 is a fourth layer of water jacket, 8 is a flue gas outlet, 9 is a charging port for a smelting chamber, 10 is a top water jacket, 11 is a charging port for a raw material chamber, 12 is a gas side-blowing lance, 13 is a pulverized coal side-blowing lance, 14 is a flue gas connecting channel, 15 is a molten pool connecting channel, 16 is a furnace water jacket, 17 is a secondary air outlet, 18 is a steel column, 19 is a crossbeam, and 20 is a connecting rod. DETAILED DESCRIPTION
[0020] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:
[0021] like Figure 1-2As shown, an oxygen-enriched side-blown molten pool smelting furnace, in this embodiment, the oxygen-enriched side-blown molten pool smelting furnace is used to process waste lead paste, including a furnace body 2 and a furnace cylinder 1 arranged at the bottom of the furnace body 2, the furnace body 2 is surrounded by a water jacket assembly, the interior of the furnace body 2 is provided with a raw material chamber and a smelting chamber, the top of the raw material chamber is provided with a top water jacket 10, the top water jacket 10 is provided with a raw material chamber feeding port 11, the raw material chamber can be charged with the waste lead paste raw material to be processed through the raw material chamber feeding port 11, and one side of the furnace body 2 is provided with a forming The molten pool feeding port 201 can be used to add lead raw materials before processing the waste lead paste raw materials. At the same time, under the action of the gas side-blowing lance 12 and the pulverized coal side-blowing lance 13, the lead raw materials are melted and decomposed to form a lead molten pool in the furnace cylinder 1; the top of the smelting chamber is provided with a smoke outlet 8 and a smelting chamber feeding port 9, and the smoke generated by processing the waste lead paste can be discharged from the smoke outlet 8 to the outside of the furnace body 2. In the process of processing the waste lead paste, auxiliary materials such as reducing agents can be added into the smelting chamber through the smelting chamber feeding port 9.
[0022] A partition wall 3 is fixedly arranged between the raw material chamber and the smelting chamber. In this embodiment, a water jacket cooling device is also arranged inside the partition wall 3 to cool the partition wall 3. The water jacket cooling device is specifically a circulation pipe installed in the partition wall 3. Both ends of the circulation pipe pass through the partition wall 3 respectively. By introducing circulating cooling water into the circulation pipe, the partition wall 3 is cooled by heat exchange. A molten pool communication channel 15 is opened at the bottom of the partition wall 3, and a smoke communication channel 14 is opened at the top; the lower part of the furnace body 2 is provided with a molten pool communication channel 15, and a smoke communication channel 14 is opened at the top; The partition is provided with a plurality of gas side blowing spray guns 12 and pulverized coal side blowing spray guns 13. In this embodiment, the gas side blowing spray guns 12 can blow gas and oxygen-enriched air into the lead melt pool in the raw material chamber and the smelting chamber, while the pulverized coal side water spray guns 13 can blow pulverized coal and oxygen-enriched air into the lead melt pool in the raw material chamber and the smelting chamber. The waste lead paste raw material can be melted and decomposed in the raw material chamber, and the smoke generated can enter the smelting chamber through the smoke connecting channel 14, and then be discharged to the outside of the furnace body 2 from the smoke outlet 8 above the smelting chamber.
[0023] The furnace 1 includes a refractory brick layer 102 and a guard plate 101, and the guard plate 101 is arranged on the outside of the refractory brick layer 102. The furnace 1 is provided with a siphon port 104, a safety discharge port 1 105 and a safety discharge port 2 106 which are connected with the smelting chamber. During the normal smelting of the waste lead paste raw materials, lead is discharged from the siphon port 104 on the furnace 1. When the waste lead paste raw materials cannot be smelted normally, the bottom lead can be discharged from the safety discharge port 2 on the furnace 1, and the slag can be discharged from the safety discharge port 1 on the furnace 1.
[0024] The water jacket assembly includes a second water jacket 5, a third water jacket 6 and a fourth water jacket 7 which are arranged in sequence from top to bottom. A first water jacket 4 is also arranged above the smelting chamber, and a water jacket is also arranged on the top of the first water jacket 4. The smelting chamber feeding port 9 is arranged at the water jacket. The water jacket, top water jacket 10, furnace table water jacket 16, first water jacket 4, second water jacket 5, third water jacket 6 and fourth water jacket 7 in this embodiment are one or more of copper water jackets, steel water jackets, and copper-steel composite water jackets, and circulating water circuits are installed inside them.
[0025] A plurality of secondary air ports 17 are arranged at intervals on both sides of the smelting chamber, and the secondary air ports 17 are located on the second water jacket 5; a slag discharge port 103 located on the fourth water jacket 7 is also opened on one side of the smelting chamber. In this embodiment, air can be introduced again at the secondary air port 17 to burn the incompletely burned CO completely, so that the combustion heat can increase the temperature in the furnace body as much as possible, thereby improving the utilization rate of the fuel, and the slag generated during the smelting of the waste lead paste can be discharged from the slag discharge port 103 to the outside of the furnace body 2.
[0026] The gas side-blowing lance 12 and the pulverized coal side-blowing lance 13 are both arranged on the fourth water jacket 7, and the front ends of the gas side-blowing lance 12 and the pulverized coal side-blowing lance 13 both extend into the furnace body 2. In this embodiment, the front ends of the gas side-blowing lance 12 and the pulverized coal side-blowing lance 13 extend into the furnace body 2 by 30 to 300 mm respectively.
[0027] A furnace water jacket 16 is provided on the top of the furnace cylinder 1, and the height of the safety discharge port 1 105 is higher than that of the safety discharge port 2 106. The purpose is to ensure that the bottom lead can be discharged from the safety discharge port 2 on the furnace cylinder 1 when the scrap lead paste raw material cannot be smelted normally, and to ensure that the slag can be discharged from the safety discharge port 1 on the furnace cylinder 1.
[0028] A furnace body steel frame structure is arranged on the outside of the furnace body 2, and the furnace body steel frame structure includes a plurality of steel columns 18 arranged at intervals on the outside of the furnace body 2, a plurality of steel columns 18 are fixedly provided with cross beams 19, a plurality of connecting rods 20 are arranged on the cross beams 19, one end of the connecting rod 20 is connected to the cross beam 19, and the other end is connected to the water jacket assembly, and the two ends of the connecting rod 20 are respectively hinged to the cross beam 10 and the water jacket assembly.
[0029] The working principle of the utility model is as follows: before processing the waste lead paste raw material, firstly, the lead raw material is added into the raw material chamber through the molten pool feeding port 201, and the lead raw material is melted and decomposed by using the gas and pulverized coal sprayed by the gas side blowing lance 12 and the pulverized coal side blowing lance 13 as well as oxygen-enriched air to form a molten pool in the furnace cylinder 1; after the molten pool is formed in the furnace cylinder 1, the waste lead paste raw material to be processed is added into the raw material chamber through the raw material chamber feeding port 11, and the waste lead paste raw material is melted and decomposed under the action of the gas and pulverized coal sprayed by the gas side blowing lance 12 and the pulverized coal side blowing lance 13 as well as oxygen-enriched air, wherein the lead melt can enter the smelting chamber through the molten pool connecting channel 15, and the smoke generated by smelting the waste lead paste raw material in the raw material chamber can enter the smelting chamber through the smoke connecting channel, and be discharged to the outside of the furnace body 2 from the smoke outlet 8.
[0030] During the process of smelting the waste lead paste raw materials, auxiliary materials such as reducing agents can be added into the smelting chamber at the feeding port 9 of the smelting chamber. During the continuous smelting of the waste lead paste raw materials, the slag is discharged from the slag discharge port 103 to the outside of the furnace body 2, and the lead is discharged from the siphon port 104 on the furnace cylinder 1 to the outside of the furnace body 2. The flue gas generated in the smelting chamber flows from bottom to top to the flue gas outlet 8 and is discharged from the furnace body 2.
[0031] The embodiments described above are only preferred embodiments of the utility model and do not limit the scope of implementation of the utility model. Therefore, all equivalent changes or modifications made according to the technical solutions described in the patent scope of the utility model should be included in the scope of the patent application of the utility model.
Claims
1. An oxygen-enriched side-blown molten pool smelting furnace, characterized in that: The invention comprises a furnace body (2) and a furnace cylinder (1) arranged at the bottom of the furnace body (2), wherein the furnace body (2) is surrounded by a water jacket assembly, a raw material chamber and a smelting chamber are arranged inside the furnace body (2), a top water jacket (10) is arranged at the top of the raw material chamber, a raw material chamber feeding port (11) is arranged on the top water jacket (10), and a melting pool feeding port (201) communicating with the raw material chamber is arranged on one side of the furnace body (2); a smoke outlet (8) and a smelting chamber feeding port (9) are arranged at the top of the smelting chamber; A partition wall (3) is fixedly arranged between the raw material chamber and the smelting chamber, the bottom of the partition wall (3) is provided with a molten pool communication channel (15), and the upper part is provided with a flue gas communication channel (14); a plurality of gas side-blowing lances (12) and pulverized coal side-blowing lances (13) are arranged at intervals at the lower part of the furnace body (2); The furnace (1) comprises a refractory brick layer (102) and a guard plate (101), wherein the guard plate (101) is arranged on the outside of the refractory brick layer (102), and the furnace (1) is provided with a siphon port (104) connected to a smelting chamber, a first safety discharge port (105), and a second safety discharge port (106).
2. The oxygen-enriched side-blown molten pool smelting furnace according to claim 1, characterized in that: The water jacket assembly comprises a second layer of water jacket (5), a third layer of water jacket (6) and a fourth layer of water jacket (7) arranged in sequence from top to bottom, a first layer of water jacket (4) is further arranged above the smelting chamber, a water jacket is further arranged on the top of the first layer of water jacket (4), and the smelting chamber feed port (9) is arranged at the water jacket.
3. The oxygen-enriched side-blown molten pool smelting furnace according to claim 2, characterized in that: A plurality of secondary air ports (17) are arranged at intervals on both sides of the smelting chamber, and the secondary air ports (17) are located on the second layer of the water jacket (5); and a slag discharge port (103) located on the fourth layer of the water jacket (7) is also provided on one side of the smelting chamber.
4. The oxygen-enriched side-blown molten pool smelting furnace according to claim 2, characterized in that: The gas side-blowing lance (12) and the pulverized coal side-blowing lance (13) are both arranged on the fourth layer of the water jacket (7), and the front ends of the gas side-blowing lance (12) and the pulverized coal side-blowing lance (13) extend into the furnace body (2).
5. The oxygen-enriched side-blown molten pool smelting furnace according to claim 1, characterized in that: A furnace water jacket (16) is provided on the top of the furnace cylinder (1), and the height of the first safety discharge port (105) is higher than the height of the second safety discharge port (106).
6. The oxygen-enriched side-blown molten pool smelting furnace according to claim 1, characterized in that: A furnace body steel frame structure is arranged on the outside of the furnace body (2), and the furnace body steel frame structure includes a plurality of steel columns (18) arranged at intervals on the outside of the furnace body (2), a crossbeam (19) is fixedly arranged on the plurality of steel columns (18), a plurality of connecting rods (20) are arranged on the crossbeam (19), one end of the connecting rod (20) is connected to the crossbeam (19), and the other end is connected to the water jacket assembly.