CN107227409B - Bottom side blowing molten pool reduction furnace for liquid high-lead slag - Google Patents
Bottom side blowing molten pool reduction furnace for liquid high-lead slag Download PDFInfo
- Publication number
- CN107227409B CN107227409B CN201710640219.1A CN201710640219A CN107227409B CN 107227409 B CN107227409 B CN 107227409B CN 201710640219 A CN201710640219 A CN 201710640219A CN 107227409 B CN107227409 B CN 107227409B
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- China
- Prior art keywords
- furnace body
- slag
- spray gun
- lead
- molten pool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002893 slag Substances 0.000 title claims abstract description 85
- 239000007788 liquid Substances 0.000 title claims abstract description 16
- 238000007664 blowing Methods 0.000 title claims abstract description 15
- 239000007921 spray Substances 0.000 claims abstract description 45
- 238000006722 reduction reaction Methods 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 239000000779 smoke Substances 0.000 claims abstract description 15
- 238000005096 rolling process Methods 0.000 claims abstract description 9
- 238000002485 combustion reaction Methods 0.000 claims abstract description 7
- 239000000446 fuel Substances 0.000 claims abstract description 7
- 229910000464 lead oxide Inorganic materials 0.000 claims abstract description 5
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000011799 hole material Substances 0.000 claims description 19
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 239000003245 coal Substances 0.000 claims description 7
- 239000003345 natural gas Substances 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000002918 waste heat Substances 0.000 claims description 3
- 239000003517 fume Substances 0.000 claims description 2
- 238000003723 Smelting Methods 0.000 description 11
- 239000007789 gas Substances 0.000 description 5
- 239000000155 melt Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B13/00—Obtaining lead
- C22B13/02—Obtaining lead by dry processes
Abstract
The invention discloses a bottom side blowing molten pool reducing furnace for liquid high lead slag, which comprises a furnace body and supporting seats arranged at two ends of the furnace body, wherein rolling rings are fixedly arranged on the outer wall of the furnace body, the rolling rings are rotatably arranged on the supporting seats and driven by a driving device to realize rotation, a smoke outlet, a first charging hole and a second charging hole are sequentially arranged at the top of the furnace body from left to right, a slag hole is arranged at the lower part of a side plate at the right end of the furnace body, a reduction spray gun device is arranged at the bottom of the furnace body right below the first charging hole, a heating spray gun device is arranged below the second charging hole, and the heating spray gun device is positioned on the side wall of the furnace body and is close to the slag hole. The fuel and the combustion improver are sprayed into the slag layer of the molten pool from the heating spray gun, so that lead oxide of the slag layer is subjected to further reduction reaction, the lead content of the slag is reduced, the direct yield of lead is improved, the slag layer temperature of the molten pool is improved, slag discharge is facilitated, the distance between the spray gun and a slag outlet is shortened, the temperature of the molten pool can be reduced, and the consumption of energy is reduced.
Description
Technical Field
The invention relates to a bottom side blowing molten pool reducing furnace for a molten pool reducing furnace, in particular to a bottom side blowing molten pool reducing furnace for liquid high-lead slag, and belongs to the technical field of lead smelting in nonferrous metal smelting industry.
Background
The invention of Chinese patent CN200710127659.3 discloses a method and a device for smelting direct lead by molten pool smelting, and production practice shows that the bottom blowing reduction furnace device of the patent can directly treat liquid high lead slag, has the characteristics of lower energy consumption, good working environment, continuous and stable production and the like, and has good popularization and application prospects.
At present, a bottom blowing reduction lead smelting furnace is produced practically for a long time, and the defect is found that the bottom blowing reduction lead smelting furnace has the structure, and is caused by the fact that gas sprayed out of a bottom blowing reduction spray gun firstly passes through a bottom lead layer and then enters a slag layer, so that the gas moves from bottom to top, lead in the bottom lead layer must be driven to enter the slag layer, lead in the slag layer is caused to be higher, in order to reduce the lead content of slag discharged from a slag hole, the distance between the spray gun position and the slag hole and the existence of sufficient reducing agent coal particles on the slag layer are generally ensured, the sufficient distance between the spray gun position and the slag hole is ensured, the lead of the slag layer is sufficiently precipitated for reducing the lead content of slag, and meanwhile, the existence of sufficient coal particles on the slag layer is ensured, so that the lead content of slag can be reduced. Because the position of the spray gun is long enough with the slag outlet, the distance between the slag near the slag outlet and the position of the spray gun is long, so that the slag temperature at the slag outlet is ensured, the slag is convenient to discharge, the temperature of the whole molten pool in the furnace is required to be increased, and the higher temperature of the molten pool needs to be provided from the outside, so that energy waste is caused; meanwhile, the slag discharged from the slag outlet contains a certain amount of coal particles, and the energy waste is caused by no participation in the reaction.
Disclosure of Invention
Aiming at the defects and shortcomings in the prior art, the invention provides a bottom side blowing molten pool reducing furnace for liquid high-lead slag.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the bottom side blowing molten pool reducing furnace for liquid high lead slag comprises a cylindrical horizontal furnace body and supporting seats arranged at the left end and the right end of the furnace body, rolling rings are fixedly arranged on the outer walls of the left end and the right end of the furnace body, the rolling rings are rotatably arranged on the supporting seats and driven by a driving device to realize rotation, a smoke outlet, a first feeding port and a second feeding port are sequentially arranged at the top of the furnace body from left to right, a burner port is arranged at the upper part of a right end side plate of the furnace body, a slag outlet is arranged at the lower part of the right end side plate, and a direct lead discharging port is arranged at the bottom of the left end side plate of the furnace body; the exhaust-heat boiler is arranged at the smoke outlet, the smoke inlet of the exhaust-heat boiler is connected with the smoke outlet through a pipeline, a reduction spray gun device is arranged at the bottom of the furnace body right below the first charging hole, oxygen and natural gas are sprayed into a bottom lead layer in the furnace body from the bottom of the furnace body, a heating spray gun device is arranged below the second charging hole, the heating spray gun device is positioned on the side wall of the furnace body and is close to the slag outlet, and fuel and combustion improver are sprayed into the furnace body from the side surface of the furnace body.
In the technical scheme, the smoke outlet is positioned at the left end of the furnace body.
In the above technical scheme, the second charging port is located at the right end of the furnace body.
In the above technical scheme, the reduction spray gun device comprises at least two reduction spray guns which are vertically arranged.
In the technical scheme, the heating spray gun device comprises at least one heating spray gun, and the included angle between the central line of the outlet of the heating spray gun and the horizontal line is alpha, and alpha is more than or equal to 0 degree and less than or equal to 10 degrees.
In the technical scheme, the driving device drives the furnace body to rotate through gear transmission of the gear ring fixedly arranged on the outer wall of the furnace body and the gear meshed with the gear ring and fixed on a power output shaft of the driving device.
The beneficial effects of the invention are as follows:
1. according to the invention, the side heating spray gun sprays fuel and combustion improver into the slag layer of the molten pool, so that the temperature of the molten pool close to a slag outlet is controlled, slag discharge is facilitated, the lead oxide of the slag layer in the molten pool is subjected to further reduction reaction, the lead content of slag can be reduced, and the direct yield of lead is improved; simultaneously, gas is sprayed into the slag layer of the molten pool, so that lead liquid is prevented from entering the slag layer of the molten pool too much due to the stirring effect of the gas sprayed by the spray gun;
2. the heating spray gun is arranged at a relatively short distance of the slag hole, so that a molten pool in the furnace is heated uniformly, and energy waste caused by higher temperature of the molten pool in the furnace due to longer distance between the bottom blowing spray gun and the slag hole can be avoided;
3. according to the invention, natural gas and oxygen are introduced through the bottom reduction spray gun, so that the melt is stirred on one hand, the reaction in the molten pool is more uniform, and the melt is heated on the other hand, so that the reasonable temperature of the molten pool is ensured;
4. the bottom side molten pool reduction lead smelting furnace is provided with a driving device, so that the furnace body is convenient for the converter during gun replacement, maintenance and treatment.
Drawings
FIG. 1 is a schematic diagram of an embodiment 1 of a bottom side-blown molten pool reduction lead smelting furnace for liquid high lead slag lead smelting according to the present invention;
fig. 2 is a schematic view of the configuration of the lance position in example 1 of the bottom side-blown molten pool reduction lead smelting furnace of the present invention for liquid high lead slag lead smelting.
The reference numerals in the figures represent the following meanings: 1. furnace body, 2, the mouth of discharging fume, 3, exhaust-heat boiler, 4, the rolling circle, 5, first charge door, 6, heating spray gun, 7, ring gear, 8, second charge door, 9, nozzle mouth, 10, slag notch, 11, supporting seat, 12, drive arrangement, 13, reduction spray gun, 14, direct lead mouth of putting, 15, bottom lead layer, 16, slag layer.
Detailed Description
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the simplified description of the present invention, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example 1: referring to fig. 1 and 2, a bottom side blowing molten pool reduction furnace for liquid high lead slag comprises a cylindrical horizontal furnace body and supporting seats arranged at the left end and the right end of the furnace body, rolling rings are fixedly arranged on the outer walls of the left end and the right end of the furnace body, the rolling rings are rotatably arranged on the supporting seats and driven by a driving device to rotate, a smoke outlet, a first charging hole and a second charging hole are sequentially arranged at the top of the furnace body from left to right, the smoke outlet is positioned at the left end of the furnace body, the second charging hole is positioned at the right end of the furnace body, a burner mouth is arranged at the upper part of a side plate at the right end of the furnace body, a slag outlet is arranged at the lower part of the side plate at the right end of the furnace body, and a direct lead discharging hole is arranged at the bottom of the side plate at the left end of the furnace body; the exhaust-heat boiler is arranged at the smoke outlet, the smoke inlet of the exhaust-heat boiler is connected with the smoke outlet through a pipeline, a reduction spray gun device is arranged at the bottom of the furnace body right below the first charging hole, oxygen and natural gas are sprayed into a bottom lead layer in the furnace body from the bottom of the furnace body, a heating spray gun device is arranged below the second charging hole, the heating spray gun device is positioned on the side wall of the furnace body and is close to the slag outlet, and fuel and combustion improver are sprayed into the furnace body from the side surface of the furnace body.
The reduction spray gun device comprises at least two reduction spray guns which are vertically arranged, oxygen and natural gas are introduced into the reduction spray gun at the bottom, and the oxygen and the natural gas directly enter the bottom lead layer, so that the melt is stirred on one hand, the reaction in the molten pool is more uniform, and the melt is heated on the other hand, so that the reasonable temperature of the molten pool is ensured.
The heating spray gun device comprises at least one heating spray gun, the included angle between the central line of the outlet of the heating spray gun and the horizontal line is alpha, alpha is more than or equal to 0 degrees and less than or equal to 10 degrees (as shown in figure 2), the heating spray gun is arranged close to a slag hole, for a horizontal cylindrical furnace body, fuel and combustion improver are sprayed out of a molten pool entering from the heating spray gun at the included angle alpha with the horizontal line, on one hand, the temperature of the slag layer of the molten pool is increased to facilitate slag discharge, on the other hand, coal particles can be added into the slag layer through a second feeding hole 8, so that lead oxide of the slag layer in the molten pool is further reduced, lead in the slag layer can be reduced, and the direct yield of lead is improved.
Directly adding liquid high lead slag, coal particles and solvent into a furnace body from a first feed inlet 5, spraying oxygen and natural gas from a reduction gun 13 at the bottom of the furnace body, and spraying a bottom lead layer 15 of a molten pool; the high lead slag is subjected to reduction reaction to generate lead which is settled to a crude lead layer 15, the residual substances and the solvent are combined to form slag, a heating spray gun 6 near the side part of the furnace body provided with a slag hole is used for spraying fuel and combustion improver into the slag layer 16, coal particles are added into the slag layer through a second feed inlet 8, the lead oxide of the slag layer in a molten pool is subjected to further reduction reaction, the lead content of the slag is reduced, the temperature of the slag layer is also improved, the slag is convenient for slag discharge, the slag is sprayed into gas through a side blowing heating spray gun to be discharged through the slag hole 10 after further reduction reaction, and the discharged slag enters a fuming furnace through a slag ladle or is quenched with water to be used as waste slag. Lead bullion is discharged from a lead discharging port 14 at the bottom, and the discharged lead bullion is sent to further treatment; the produced flue gas is discharged from a flue gas outlet, and the flue gas enters the standard to be discharged after being cooled and dedusted by the waste heat boiler 3; and returning the dust-removed ash to the batching system. The burner nozzle 9 allows the burner nozzle to be installed for baking before the furnace is opened.
The driving device drives the furnace body to rotate through gear rings fixedly arranged on the outer wall of the furnace body and gear transmission meshed with the gear rings and fixed on a power output shaft of the driving device, so that the furnace body is convenient for a converter to change guns, overhaul and solve the problems, and the gun changing and overhaul efficiency is improved.
The above description is only illustrative of embodiments of the invention and the detailed description is not limited to the embodiments described above. Corresponding modifications and variations remain, without departing from the principle of embodiment of the invention, from the principle of schematic description and the technical scope of the invention, reference being made to equivalents which fall within the scope of protection of the claims.
Claims (4)
1. The bottom side blowing molten pool reducing furnace for the liquid high lead slag is characterized by comprising a cylindrical horizontal furnace body and supporting seats arranged at the left end and the right end of the furnace body, wherein rolling rings are fixedly arranged on the outer walls of the left end and the right end of the furnace body, the rolling rings are rotatably arranged on the supporting seats and driven by a driving device to realize rotation, a smoke outlet, a first feeding port and a second feeding port are sequentially arranged at the top of the furnace body from left to right, a burner port is arranged at the upper part of a right end side plate of the furnace body, a slag outlet is arranged at the lower part of the right end side plate, and a direct lead discharging port is arranged at the bottom of the left end side plate of the furnace body; a waste heat boiler is arranged at the smoke outlet, the smoke inlet of the waste heat boiler is connected with the smoke outlet through a pipeline, a reduction spray gun device is arranged at the bottom of the furnace body right below the first charging hole, oxygen and natural gas are sprayed into a bottom lead layer in the furnace body from the bottom of the furnace body, a heating spray gun device is arranged below the second charging hole, the heating spray gun device is positioned on the side wall of the furnace body and is close to the slag outlet, and fuel and combustion improver are sprayed into a slag layer of a molten pool in the furnace body from the side of the furnace body; adding coal particles into the slag layer through a second feed port, so that lead oxide of the slag layer in the molten pool is subjected to further reduction reaction, and lead content of slag is reduced;
the second charging port is positioned at the right end of the furnace body; the heating spray gun device comprises at least one heating spray gun, wherein the included angle between the central line of the outlet of the heating spray gun and the horizontal line is alpha, and alpha is more than or equal to 0 degree and less than or equal to 10 degrees.
2. The bottom-side-blown molten pool reducing furnace for liquid high lead slag as defined in claim 1, wherein said fume outlet is located at the left end of the furnace body.
3. The bottom-side-blown molten bath reduction furnace for liquid high lead slag according to claim 1, wherein said reduction lance means comprises at least two vertically disposed reduction lances.
4. The bottom side-blown molten pool reducing furnace for liquid high lead slag according to claim 1, wherein the driving device drives the furnace body to rotate through a gear ring fixedly arranged on the outer wall of the furnace body and a gear transmission which is fixedly arranged on a power output shaft of the driving device and meshed with the gear ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710640219.1A CN107227409B (en) | 2017-07-31 | 2017-07-31 | Bottom side blowing molten pool reduction furnace for liquid high-lead slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710640219.1A CN107227409B (en) | 2017-07-31 | 2017-07-31 | Bottom side blowing molten pool reduction furnace for liquid high-lead slag |
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| Publication Number | Publication Date |
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| CN107227409A CN107227409A (en) | 2017-10-03 |
| CN107227409B true CN107227409B (en) | 2023-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710640219.1A Active CN107227409B (en) | 2017-07-31 | 2017-07-31 | Bottom side blowing molten pool reduction furnace for liquid high-lead slag |
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| CN107513623A (en) * | 2017-10-11 | 2017-12-26 | 贵溪三元金属有限公司 | A kind of smart refining equipment for bismuth |
| CN110468245B (en) * | 2019-09-05 | 2021-05-25 | 首钢集团有限公司 | Smelting reduction furnace |
| CN113063290A (en) * | 2020-01-02 | 2021-07-02 | 中国瑞林工程技术股份有限公司 | Device and method for accurately metering and treating copper-containing material |
| CN111996389B (en) * | 2020-08-28 | 2022-12-23 | 中核第七研究设计院有限公司 | Side-blown reduction furnace |
| CN113186367B (en) * | 2021-04-28 | 2022-10-04 | 东北大学 | Use method of bottom-top composite injection smelting reduction furnace for treating high-iron red mud |
| CN113430388B (en) * | 2021-06-18 | 2022-11-22 | 中国恩菲工程技术有限公司 | Short-flow reduction fuming device and method for liquid lead slag, lead smelting system and method |
| CN115449589A (en) * | 2022-09-21 | 2022-12-09 | 河南豫光金铅股份有限公司 | Oxygen-enriched bottom blowing and side blowing combined composite furnace |
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| CN101086038A (en) * | 2007-01-04 | 2007-12-12 | 河南豫光金铅股份有限公司 | Direct lead smelting method in molten pool and its device |
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| JPH06248366A (en) * | 1993-02-24 | 1994-09-06 | Sumitomo Metal Mining Co Ltd | Reduction furnace for zinc and lead and its operating method |
| CN201080490Y (en) * | 2007-01-04 | 2008-07-02 | 河南豫光金铅股份有限公司 | Bottom blowing molten pool reducing furnace for liquid high lead dross reduction |
| CN202643808U (en) * | 2012-05-11 | 2013-01-02 | 河南豫光金铅股份有限公司 | Copper smelting furnace |
| CN103451444A (en) * | 2013-10-09 | 2013-12-18 | 河南豫光金铅股份有限公司 | Device and technology for smelting and processing secondary lead materials to generate lead bullion by adopting bottom blowing furnace hearth |
| CN204438744U (en) * | 2014-12-23 | 2015-07-01 | 河南豫光金铅股份有限公司 | A kind of top and bottom blowing copper stove for liquid Copper Matte Converting copper metallurgy |
| CN207031516U (en) * | 2017-07-31 | 2018-02-23 | 河南豫光金铅股份有限公司 | A kind of bottom side-blowing bath reduction furnace for liquid high lead dross |
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- 2017-07-31 CN CN201710640219.1A patent/CN107227409B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101086038A (en) * | 2007-01-04 | 2007-12-12 | 河南豫光金铅股份有限公司 | Direct lead smelting method in molten pool and its device |
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