Novel double-fuel-gas double-channel non-clogging spray gun of metallurgical side-blown melting furnace
By designing a dual-gas dual-channel non-blocking structure in the metallurgical side blown melting furnace spray gun, the problem of spray gun is solved, the smoothness of the spray gun and the furnace condition are achieved, and the smelting efficiency is improved.
Patent Information
- Application Number
- CN202421605835.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-07-09
AI Technical Summary
The existing metallurgical side-blown melting furnace spray guns are easily blocked due to the formation of mushroom head-shaped refining substances, resulting in changes in gas flow and damage to the spray gun, making it difficult to quickly clean up the clogged substances.
A dual-gas dual-channel non-blocking spray gun is designed. By setting up a natural gas channel outside the oxygen-rich channel and setting up a non-blocking structure in the spray gun, including a slag-popping channel and a sealing plug, the passage blockage can be easily cleaned.
The two channels of the spray gun are unblocked, the reasonable design of the dual gas distribution and airflow cross-sectional area is achieved, the furnace condition of the side-blown melting furnace is optimized, the effective smelting time is extended, the furnace bed capacity is improved, and the lead smelting is effectively and quickly realized.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of nonferrous smelting and metallurgical equipment, in particular to a novel double-fuel gas double-channel non-clogging spray gun for a metallurgical side-blowing melting furnace. Background Art
[0002] The side-blown melting furnace is a new type of metallurgical furnace that can process a variety of hydrometallurgical zinc slag, oxide ores, and zinc-containing materials. Its process technology is to add a mixed slag of a variety of hydrometallurgical zinc slag, oxide ores, and zinc-containing materials from the top of the furnace into the side-blown metallurgical furnace, and supply natural gas and oxygen-rich air to the melting pool of the melting furnace through a spray gun. The gas enters the molten furnace pool as a combustion, combustion-supporting, and reducing agent, increasing the metallurgical dynamic reaction in the furnace and completing the lead smelting operation.
[0003] The spray gun currently used is a concentric double-tube double-channel structure, with an oxygen-enriched channel outside or inside the natural gas channel to supply oxygen-enriched air and natural gas into the furnace. The burnout of the side-blowing oxygen lance under the 1200℃ high-temperature molten pool blowing state is basically zero, but because the side-blowing of the spray gun is immersed in the molten pool liquid surface in the furnace, the head of the oxygen lance in continuous operation is very likely to generate mushroom-shaped hard smelting products, which will change the flow direction of the gas straight forward and even cause the spray gun to be blocked. It is necessary to design a double-channel unobstructed spray gun that can quickly clean up the blockage in the oxygen-enriched channel. At the same time, the dual-gas is reasonably distributed, and the double-channel airflow cross-sectional area is reasonable, which can optimize the furnace condition of the side-blowing melting furnace. Utility Model Content
[0004] In view of the above problems existing in the prior art, the utility model provides a new type of metallurgical side-blown melting furnace dual-fuel gas dual-channel non-clogging spray gun, which is equipped with a non-clogging structure to meet the needs of cleaning blockages in the oxygen-enriched channel, and a natural gas channel is arranged outside the oxygen-enriched channel to smoothly transport natural gas and oxygen-enriched air into the furnace.
[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a new type of metallurgical side-blown melting furnace dual-fuel gas dual-channel non-clogging spray gun, including a non-clogging structure, an oxygen-enriched channel, and a natural gas channel. The oxygen-enriched channel includes an oxygen-enriched channel gun seat and a spray gun core threadedly connected thereto. The natural gas channel includes a natural gas channel gun seat and a spray gun sleeve threadedly connected thereto. The natural gas channel is sleeved on the periphery of the oxygen-enriched channel and connected to the oxygen-enriched channel. The two channels are distributed on the axis of the spray gun core and the spray gun sleeve. The non-clogging structure includes a sealing plug and a slag-poking channel. One end of the slag-poking channel is connected to the oxygen-enriched channel gun seat, and the other end is sealed by a sealing plug.
[0006] Furthermore, the oxygen-enriched channel gun seat includes an oxygen-enriched air connecting flange, an oxygen-enriched channel connecting pipe, an oxygen-enriched channel pipe seat, and an oxygen-enriched channel spray gun connecting seat. One end of the oxygen-enriched channel connecting pipe is connected to the oxygen-enriched channel pipe seat, and the other end is connected to an external oxygen-enriched air source through the oxygen-enriched air connecting flange. The oxygen-enriched channel spray gun connecting seat is installed on one side of the oxygen-enriched channel pipe seat and is threadedly connected to the spray gun core.
[0007] Furthermore, the oxygen-enriched air connecting flange is a conical contraction port.
[0008] Furthermore, the natural gas channel gun seat includes a connecting flange, a natural gas channel connecting pipe, a natural gas channel connecting pipe seat, and a natural gas channel connecting pipe seat flange. One end of the natural gas channel connecting pipe is connected to the natural gas channel connecting pipe seat, and the other end is connected to an external natural gas source through a connecting flange. Natural gas channel connecting pipe seat flanges are provided on both sides of the natural gas channel connecting pipe seat, and one side of the natural gas channel connecting pipe seat flange is threadedly connected to the natural gas channel spray gun sleeve.
[0009] Furthermore, the natural gas channel connecting pipe seat is connected to the oxygen-enriched channel spray gun connecting seat through connecting bolts.
[0010] Furthermore, the spray gun is provided with a protective connecting short pipe, and connecting flanges are installed at both ends of the protective connecting short pipe. One end flange is installed on the water jacket of the gun seat of the side-blowing melting furnace body, and the other end flange is connected to the natural gas channel connecting pipe seat flange through connecting bolts.
[0011] Furthermore, the spray gun core includes an oxygen-enriched channel spray gun core and an oxygen-enriched channel spray gun core head connected thereto.
[0012] Beneficial effects of the utility model:
[0013] The utility model provides a novel metallurgical side-blown melting furnace dual-fuel gas dual-channel non-clogging spray gun. The spray gun is provided with a non-clogging structure. The channel blockage is pushed into the furnace by poking the slag channel, so the spray gun blockage can be conveniently cleaned, and the spray gun is effectively prevented from being blocked and damaged. The dual channels of the spray gun are unobstructed, the dual fuel gases are reasonably distributed, and the dual-channel airflow cross-sectional area is reasonable. The furnace condition of the side-blown melting furnace can be optimized, the effective smelting time can be extended, the furnace bed capacity can be improved, the side-blown melting furnace lead smelting can be effectively and quickly realized, and the utility model has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure of the utility model;
[0015] Figure 2 Assembly diagram for oxygen-enriched air passage;
[0016] Figure 3 Assemble drawings for gas passages;
[0017] Figure 4 AA cross section diagram.
[0018] In the figure, 1-oxygen-enriched air connecting flange, 2-oxygen-enriched channel connecting pipe, 3-sealing plug, 4-connecting bolt, 5-slag-poking channel, 6-oxygen-enriched channel pipe seat, 7-natural gas connecting flange, 8-natural gas channel connecting pipe, 9-natural gas channel connecting pipe seat, 10-natural gas channel connecting pipe seat flange, 11-spray gun protection connecting short pipe, 12-oxygen-enriched channel spray gun gun core, 13-natural gas channel spray gun sleeve, 14-oxygen-enriched channel spray gun gun core gun head, 15-sealing gasket, 16-spray gun protection connecting short pipe connecting flange, 17-oxygen-enriched channel spray gun connecting seat. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to facilitate understanding by technicians.
[0020] The double-fuel gas double-channel non-clogging spray gun of the novel side-blowing melting furnace comprises a non-clogging structure, an oxygen-enriched channel, a natural gas channel, and a protective connecting short pipe.
[0021] The oxygen-enriched channel includes an oxygen-enriched channel gun seat and a spray gun core, which are welded together to form an oxygen-enriched channel gun seat by an oxygen-enriched air flange connection plate 1, an oxygen-enriched channel connecting pipe 2, an oxygen-enriched channel pipe seat 6, and an oxygen-enriched channel spray gun connection seat 17. One end of the oxygen-enriched channel connecting pipe 2 is connected to the oxygen-enriched channel pipe seat 6, and the other end is connected to an external oxygen-enriched air source through an oxygen-enriched air connection flange plate 1; an oxygen-enriched channel spray gun core 12 and an oxygen-enriched channel spray gun core gun head 14 are welded together to form a spray gun core, and the spray gun core is threadedly connected to the oxygen-enriched channel spray gun connection seat 17 to form a complete oxygen-enriched channel. The oxygen-enriched air is delivered to the new melting furnace through the oxygen-enriched air flange connection plate 1, the oxygen-enriched channel connecting pipe 2, the oxygen-enriched channel pipe seat 6, the oxygen-enriched channel spray gun connection seat 17, the oxygen-enriched channel spray gun core 12, and the oxygen-enriched channel spray gun core gun head 14.
[0022] The oxygen-enriched air flange connection plate 1 is designed as a conical contraction port, which is convenient for the oxygen-enriched air flow to be collected and transported steadily, so that no flocculent flow or eddy current is generated during the transportation process, and no spark hidden danger is generated by gas collision and friction. The oxygen-enriched channel spray gun connection seat 17 is designed as an oxygen-enriched channel spray gun threaded connection seat, and the oxygen-enriched channel spray gun core 12 connection thread and the sealing gasket 15 card slot are provided on the connection seat, which is convenient for the spray gun core thread connection and sealing. The oxygen-enriched channel spray gun core 12 is made of heat-resistant and wear-resistant material, and one end is machined with a 55° sealing pipe thread. The oxygen-enriched channel spray gun core gun head 14 is made of heat-resistant and wear-resistant material, and the design is "special-shaped groove + concentric different-diameter circular ring groove + concentric inner hole" that meets the reasonable air volume ratio of the side-blowing melting furnace. The gun head is a key device, which meets the air volume ratio requirements and the wind speed uniform distribution requirements. Its design cross-sectional area cooperates with the natural gas channel spray gun sleeve 13 (the channel area includes the gap with the outer pipe and the cutting seam) to achieve the optimal ratio of the air volume entering the furnace.
[0023] The natural gas channel includes a natural gas channel gun seat and a spray gun sleeve threadedly connected thereto, which is welded into a natural gas channel gun seat by a natural gas connection flange 7, a natural gas channel connection pipe 8, a natural gas channel connection pipe seat 9, and a natural gas channel connection pipe seat flange 10. One end of the natural gas channel connection pipe 8 is connected to the natural gas channel connection pipe seat 9, and the other end is connected to an external natural gas source through the natural gas connection flange 7. Natural gas channel connection pipe seat flanges 10 are respectively arranged on both sides of the natural gas channel connection pipe seat 9. The natural gas channel connection pipe seat flange 10 on the right side is threadedly connected to the natural gas channel spray gun sleeve 13 to form a complete natural gas channel. Natural gas is delivered to the new melting furnace through the natural gas connection flange 7, the natural gas channel connection pipe 8, the natural gas channel connection pipe seat 9, the natural gas channel connection pipe seat flange 10, and the natural gas channel spray gun sleeve 13.
[0024] The natural gas channel connecting pipe seat flange 10 on the left is connected to the oxygen-enriched channel spray gun connecting seat 17 through the connecting bolts 4, so that the natural gas channel is sleeved on the periphery of the oxygen-enriched channel, and the two channels are distributed on the axis of the oxygen-enriched channel spray gun core 12, the natural gas channel spray gun sleeve 13, and the oxygen-enriched channel spray gun core gun head 14.
[0025] The protection connecting short pipe is welded by the spray gun protection connecting short pipe 11 and the spray gun protection connecting short pipe connecting flange 16. The spray gun protection connecting short pipe connecting flange 16 is respectively arranged at both ends of the protection connecting short pipe 11. The spray gun protection connecting short pipe connecting flange 16 at the right end is fixedly installed on the side-blowing melting furnace body gun seat water jacket. The flange at the left end is connected to the natural gas channel connecting pipe seat flange 10 at the right end through the connecting bolt 4, which is used to fix the designed spray gun. The purpose of designing this short pipe is to connect the transition section of the side-blowing melting furnace body seal (the outer side of the furnace body is sealed by the steel shell + refractory castable casting structure as a whole). One end of the short pipe is directly connected to the furnace body gun seat water jacket and is sealed and cast, and the other end has a flange for easy connection and installation with the spray gun. Its design is convenient for the installation and disassembly of the spray gun seat and the side-blowing melting furnace body, and it is convenient to replace the oxygen-enriched channel spray gun core 12, the oxygen-enriched channel spray gun core gun head 14, and the natural gas channel spray gun sleeve 13.
[0026] The non-blocking structure is composed of a sealing plug 3 and a slag-poking channel 5; the slag-poking channel 5 is welded on the oxygen-enriched channel pipe seat 6, and is sealed by the sealing plug 3 and the matching copper pad. During normal smelting operations, the sealing plug 3 and the matching copper pad seal to block the airflow in the furnace from overflowing; when performing the blockage inspection of the operation cycle, the sealing plug 3 is removed, and the prepared through rod is directly extended into the oxygen-enriched channel to push the channel blockage into the furnace along the inner hole of the oxygen-enriched channel spray gun core 12 and the oxygen-enriched channel spray gun core gun head 14. The utility model provides a new type of metallurgical side-blowing melting furnace dual-gas dual-channel non-blocking spray gun, the spray gun is provided with a non-blocking structure, and the channel blockage is pushed into the furnace through the slag-poking channel, which can conveniently clean the spray gun blockage, effectively prevent the spray gun from being blocked and damaged, the spray gun dual channels are unobstructed, the dual-gas is reasonably distributed, and the dual-channel airflow cross-sectional area is reasonable, which can optimize the furnace condition of the side-blowing melting furnace, extend the effective smelting time, improve the furnace bed capacity, and effectively and quickly realize the side-blowing melting furnace lead smelting, and has good practicality.
[0027] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.
Claims
1. A new type of metallurgical side-blown melting furnace dual-fuel dual-channel non-clogging spray gun, characterized by: It includes a non-clogging structure, an oxygen-enriched channel, and a natural gas channel. The oxygen-enriched channel includes an oxygen-enriched channel gun seat and a spray gun core threadedly connected thereto. The natural gas channel includes a natural gas channel gun seat and a spray gun sleeve threadedly connected thereto. The natural gas channel is sleeved on the periphery of the oxygen-enriched channel and connected to the oxygen-enriched channel. The two channels are distributed on the axis of the spray gun core and the spray gun sleeve. The non-clogging structure includes a sealing plug and a slag-poking channel. One end of the slag-poking channel is connected to the oxygen-enriched channel gun seat, and the other end is sealed by a sealing plug.
2. A novel metallurgical side-blown melting furnace dual-fuel gas dual-channel non-clogging spray gun as claimed in claim 1, characterized in that: The oxygen-enriched channel gun seat includes an oxygen-enriched air connecting flange, an oxygen-enriched channel connecting pipe, an oxygen-enriched channel pipe seat, and an oxygen-enriched channel spray gun connecting seat. One end of the oxygen-enriched channel connecting pipe is connected to the oxygen-enriched channel pipe seat, and the other end is connected to an external oxygen-enriched air source through the oxygen-enriched air connecting flange. The oxygen-enriched channel spray gun connecting seat is installed on one side of the oxygen-enriched channel pipe seat and is threadedly connected to the spray gun core.
3. A novel metallurgical side-blown melting furnace dual-fuel gas dual-channel non-clogging spray gun as claimed in claim 2, characterized in that: The oxygen-enriched air connecting flange is a conical contraction port.
4. A novel metallurgical side-blown melting furnace dual-fuel gas dual-channel non-clogging spray gun as claimed in claim 1, characterized in that: The natural gas channel gun seat includes a connecting flange, a natural gas channel connecting pipe, a natural gas channel connecting pipe seat, and a natural gas channel connecting pipe seat flange. One end of the natural gas channel connecting pipe is connected to the natural gas channel connecting pipe seat, and the other end is connected to an external natural gas source through a connecting flange. Natural gas channel connecting pipe seat flanges are provided on both sides of the natural gas channel connecting pipe seat, and one side of the natural gas channel connecting pipe seat flange is threadedly connected to the natural gas channel spray gun sleeve.
5. A novel metallurgical side-blown melting furnace dual-fuel gas dual-channel non-clogging spray gun as claimed in claim 2 or 4, characterized in that: The natural gas channel connecting pipe seat is connected to the oxygen-enriched channel spray gun connecting seat through connecting bolts.
6. A novel metallurgical side-blown melting furnace dual-fuel gas dual-channel non-clogging spray gun as claimed in claim 1, characterized in that: The spray gun is provided with a protective connecting short pipe, and connecting flanges are installed at both ends of the protective connecting short pipe. One end flange is installed on the water jacket of the gun seat of the side-blowing melting furnace body, and the other end flange is connected to the natural gas channel connecting pipe seat flange through connecting bolts.
7. A novel metallurgical side-blown melting furnace dual-fuel gas dual-channel non-clogging spray gun as claimed in claim 1, characterized in that: The spray gun core comprises an oxygen-enriched channel spray gun core and an oxygen-enriched channel spray gun core gun head connected thereto.