CN103468955A - New scrap copper smelting technology - Google Patents
New scrap copper smelting technology Download PDFInfo
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- CN103468955A CN103468955A CN2013103634926A CN201310363492A CN103468955A CN 103468955 A CN103468955 A CN 103468955A CN 2013103634926 A CN2013103634926 A CN 2013103634926A CN 201310363492 A CN201310363492 A CN 201310363492A CN 103468955 A CN103468955 A CN 103468955A
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- composition brass
- useless composition
- novel process
- smelting
- refining furnace
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The invention relates to a new scrap copper smelting technology. A feeding machine continuously feeds to a refining furnace through a feeding inlet in one side of the end surface of a furnace body, natural gas and oxygen are injected from the bottom through a spray gun, meanwhile, the stir to a molten pool after gas is blown provides sound heat and mass transfer conditions for solid-state scrap copper melt and oxidation; the scrap copper after the melted and oxidized scrap copper is discharged discontinuously from a copper discharge outlet in one side of the opposite end surface of the feeding inlet, transported to a reduction furnace to be reduced through a travelling crane, and then cast into an anode plate, generated slag is discharged through a slag discharge outlet, smoke dust recycled through a flash cold tower can be returned to the refining furnace to be smelted again, and the refining furnace is opened to carry out process when Pb and Zn enrichment is overhigh. The new technology has the advantages that the thermal efficiency is improved, the energy consumption is reduced, and the environmental problem of smoke gas during the scrap copper smelting process is solved.
Description
Technical field
The invention belongs to the nonferrous metallurgy field, relate to a kind of smelting technology of useless composition brass.
Background technology
Useless composition brass, because of its good regeneration characteristic, is the important source material of smelting and the processing of copper always.In " city mineral products ", reclaimed copper is one of nonferrous metal resource that source is wide and quantity is large.The ratio that Chinese reclaimed copper output in 2010 accounts for former pig copper output is about 30%, and along with all fields of national economy copper consumption constantly increases, the proportion of reclaimed copper industry will progressively rise.But reclaimed copper smelting technology development at present is limited, useless composition brass is smelted and is all adopted single stove discontinuous running.Single stove is more than more than 100 tons, the smelting furnace smelting cycle is generally 24h, and smelting cycle is long, and environmental protection condition is poor.Now useless composition brass is smelted 80% and is adopted the operation of reverberatory furnace list stove, mainly, by carbonaceous fuel combustion heat release, by furnace air, conducts heat the melting solid waste material, and heat-transfer effect is poor, and energy consumption is high.And more advanced useless composition brass smelting technology, as smelting technologyes such as tilting furnace, Kaldo Furnaces, the introduction expense is high again, complex structure, and it is low still to fail to solve above-mentioned thermo-efficiency, and smelting cycle is long, single series is smelted the problems such as small scale.
Summary of the invention
The object of the invention is to avoid the deficiencies in the prior art, and a kind of useless composition brass novel process for smelting is provided.
Technical scheme of the present invention is: a kind of useless composition brass novel process for smelting, useless composition brass hangs on material-preparing machine by lifting machine, material-preparing machine requires by push rod, the piece material successively to be pushed away to the track-mounted charging machine according to master control, charging machine passes through the charging opening of body of heater end face one side to the refining furnace continuous-feeding, Sweet natural gas and oxygen spray into from bottom by spray gun, gas blasts the stirring to molten bath simultaneously, after useless composition brass fusing oxidation, by the copper mouth interruption of putting of charging opening opposing end surface one side, emitted, be cast into positive plate after being transported to the reduction furnace reduction by traveling crane, the slag generated is emitted by slag notch, by quench tower, reclaim, returning to refining furnace smelts, treat Pb, when the Zn enrichment is too high, open circuit is processed.
The copper mass degree of described useless composition brass raw material is for being not less than 80%.
Oxygen-rich concentration in described refining furnace is 50%-98%.
The volume ratio of described Sweet natural gas and oxygen is 0.5.
Oxygen in described refining furnace is pressed as 0.4-0.6MPa.
Temperature in described molten bath is 1230-1250 ℃.
Fe/SiO in described slag
2for 1.6-1.8.
Described quench tower exhanst gas outlet temperature is 180-185 ℃, and the cigarette ash main component is Cu, Fe, Pb, Zn.
Compared with prior art, the present invention has following outstanding advantages:
1, the invention solves the working condition discontinuity that the single stove discontinuous running of prior art (fusing-oxidation-reduction-casting) causes.Continuous dosing, continuous melting can make industrial scale be greater than existing more than 2 times of same size equipment, and production capacity enlarges markedly.Continuous flue gas can guarantee that minimizing of flue gas subsequent processing device purchase, and the flue gas treatment condition are better.
2, existing useless composition brass smelting technology all adopt burner from top to the burner hearth air heating, carry out the solid-state useless composition brass of heat fused by thermal radiation and convection current, heat-transfer medium is air.The present invention adopts oxygen and Sweet natural gas directly to spray into the violent chemical reaction of generation in ， molten bath, molten bath from furnace bottom, emits a large amount of heats, and the copper do not melted in molten bath is heated in the copper molten bath that heating has been melted by thermal conduction and convection current, and heat-transfer medium is copper.And the thermal conductivity of copper is much larger than air, thermo-efficiency improves, Energy Intensity Reduction.
3, the present invention, owing in fusing and oxidation stage, realizing continuity, can guarantee that smelting furnace adopts continuous negative pressure, prevents that flue gas is from each mouth of pipe loss of body of heater, and environmental protection condition is better than existing periodic job technique.Because the flue gas continuity is good, when processing, can better the effective constituent in low-grade useless composition brass flue gas during smelting be reclaimed flue gas, and dioxin is innoxious, the tail gas qualified discharge.
4, the present invention's shorter reduction and casting function of used time in the composition brass smelting cycle of giving up concentrates in existing Rotary Anode Furnace, takes full advantage of the good result that existing Rotary Anode Furnace is processed hot copper.Two stove collocation, the thoroughly environmental issue of flue gas in the useless composition brass smelting process of solution.
The accompanying drawing explanation
Fig. 1 is schema of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
A kind of useless composition brass novel process for smelting, useless composition brass hangs on material-preparing machine by lifting machine, material-preparing machine requires by push rod, the piece material successively to be pushed away to the track-mounted charging machine according to master control, charging machine passes through the charging opening of body of heater end face one side to the refining furnace continuous-feeding, Sweet natural gas and oxygen spray into from bottom by spray gun, gas blasts the stirring to molten bath simultaneously, for solid-state useless composition brass fusing, oxidation provides good heat and mass condition, after useless composition brass fusing oxidation, by the copper mouth interruption of putting of charging opening opposing end surface one side, emitted, be cast into positive plate after being transported to the reduction furnace reduction by traveling crane, the slag generated is emitted by slag notch, the cigarette ash main component reclaimed by quench tower is Cu, Fe, Pb, the elements such as Zn, can return to refining furnace smelts, treat Pb, when the Zn enrichment is too high, open circuit is processed.
Wherein: raw material consists of:
Technical qualification are:
The products obtained therefrom technical indicator is
Claims (8)
1. a useless composition brass novel process for smelting, useless composition brass hangs on material-preparing machine by lifting machine, material-preparing machine requires by push rod, the piece material successively to be pushed away to the track-mounted charging machine according to master control, it is characterized in that: charging machine passes through the charging opening of body of heater end face one side to the refining furnace continuous-feeding, Sweet natural gas and oxygen spray into from bottom by spray gun, gas blasts the stirring to molten bath simultaneously, after useless composition brass fusing oxidation, by the copper mouth interruption of putting of charging opening opposing end surface one side, emitted, be cast into positive plate after being transported to the reduction furnace reduction by traveling crane, the slag generated is emitted by slag notch, by quench tower, reclaim, returning to refining furnace smelts, treat Pb, when the Zn enrichment is too high, open circuit is processed.
2. a kind of useless composition brass novel process for smelting according to claim 1 is characterized in that: the copper mass degree of useless composition brass raw material is for being not less than 80%.
3. a kind of useless composition brass novel process for smelting according to claim 1 is characterized in that: the oxygen-rich concentration in refining furnace is 50%-98%.
4. a kind of useless composition brass novel process for smelting according to claim 1, it is characterized in that: the volume ratio of Sweet natural gas and oxygen is 0.5.
5. a kind of useless composition brass novel process for smelting according to claim 1 is characterized in that: the oxygen in refining furnace is pressed as 0.4-0.6MPa.
6. a kind of useless composition brass novel process for smelting according to claim 1, it is characterized in that: the temperature in molten bath is 1230-1250 ℃.
7. a kind of useless composition brass novel process for smelting according to claim 1, is characterized in that: Fe/SiO in slag
2for 1.6-1.8.
8. a kind of useless composition brass novel process for smelting according to claim 1, it is characterized in that: quench tower exhanst gas outlet temperature is 180-185 ℃, the cigarette ash main component is Cu, Fe, Pb, Zn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310363492.6A CN103468955B (en) | 2013-08-20 | 2013-08-20 | A kind of copper scap smelting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310363492.6A CN103468955B (en) | 2013-08-20 | 2013-08-20 | A kind of copper scap smelting process |
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| Publication Number | Publication Date |
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| CN103468955A true CN103468955A (en) | 2013-12-25 |
| CN103468955B CN103468955B (en) | 2016-09-07 |
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| CN201310363492.6A Active CN103468955B (en) | 2013-08-20 | 2013-08-20 | A kind of copper scap smelting process |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104694767A (en) * | 2015-03-19 | 2015-06-10 | 岑溪市东正动力科技开发有限公司 | Low-grade scrap copper smelting method |
| CN107794378A (en) * | 2016-08-31 | 2018-03-13 | 中国电子工程设计院 | Utilize the method and system of cupric discarded object and Copper Ores joint metal smelting copper |
| CN107828968A (en) * | 2017-09-30 | 2018-03-23 | 东营方圆有色金属有限公司 | A kind of low-grade copper scap cleaning novel process for smelting and its device |
| CN109338109A (en) * | 2018-11-19 | 2019-02-15 | 北京科技大学 | A method of separating valuable metal in high zinc slicker solder copper scap |
| CN113528825A (en) * | 2021-06-25 | 2021-10-22 | 江西华赣瑞林稀贵金属科技有限公司 | Method for smelting and recovering valuable metals by electronic waste and multi-metal solid waste |
Citations (6)
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| JPS5693837A (en) * | 1979-11-28 | 1981-07-29 | Southwire Co | Production of anode copper |
| CN1062557A (en) * | 1990-11-20 | 1992-07-08 | 三菱材料株式会社 | The equipment of continuous copper smelting |
| US5398915A (en) * | 1990-11-20 | 1995-03-21 | Mitsubishi Materials Corporation | Apparatus for continuous copper smelting |
| CN101906543A (en) * | 2010-08-23 | 2010-12-08 | 东营方圆有色金属有限公司 | High oxygen-enriched bottom blowing low power consumption molten pool melting technology |
| CN102181661A (en) * | 2011-04-15 | 2011-09-14 | 东营鲁方金属材料有限公司 | Copper smelting device and process |
| CN102242277A (en) * | 2011-06-13 | 2011-11-16 | 中国恩菲工程技术有限公司 | Oxygen-rich bottom blown copper smelter and oxygen-rich bottom blown technology for extraction of copper |
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2013
- 2013-08-20 CN CN201310363492.6A patent/CN103468955B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5693837A (en) * | 1979-11-28 | 1981-07-29 | Southwire Co | Production of anode copper |
| CN1062557A (en) * | 1990-11-20 | 1992-07-08 | 三菱材料株式会社 | The equipment of continuous copper smelting |
| US5398915A (en) * | 1990-11-20 | 1995-03-21 | Mitsubishi Materials Corporation | Apparatus for continuous copper smelting |
| CN101906543A (en) * | 2010-08-23 | 2010-12-08 | 东营方圆有色金属有限公司 | High oxygen-enriched bottom blowing low power consumption molten pool melting technology |
| CN102181661A (en) * | 2011-04-15 | 2011-09-14 | 东营鲁方金属材料有限公司 | Copper smelting device and process |
| CN102242277A (en) * | 2011-06-13 | 2011-11-16 | 中国恩菲工程技术有限公司 | Oxygen-rich bottom blown copper smelter and oxygen-rich bottom blown technology for extraction of copper |
Non-Patent Citations (3)
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| 华宏全等: "废杂铜回收利用浅析", 《中国资源综合利用》, vol. 29, no. 11, 30 November 2011 (2011-11-30), pages 20 - 23 * |
| 卢斗江: "低品位废杂铜火法熔炼技术述评", 《资源再生》, no. 7, 31 July 2011 (2011-07-31), pages 58 - 62 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104694767A (en) * | 2015-03-19 | 2015-06-10 | 岑溪市东正动力科技开发有限公司 | Low-grade scrap copper smelting method |
| CN107794378A (en) * | 2016-08-31 | 2018-03-13 | 中国电子工程设计院 | Utilize the method and system of cupric discarded object and Copper Ores joint metal smelting copper |
| CN107828968A (en) * | 2017-09-30 | 2018-03-23 | 东营方圆有色金属有限公司 | A kind of low-grade copper scap cleaning novel process for smelting and its device |
| CN109338109A (en) * | 2018-11-19 | 2019-02-15 | 北京科技大学 | A method of separating valuable metal in high zinc slicker solder copper scap |
| CN113528825A (en) * | 2021-06-25 | 2021-10-22 | 江西华赣瑞林稀贵金属科技有限公司 | Method for smelting and recovering valuable metals by electronic waste and multi-metal solid waste |
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| Publication number | Publication date |
|---|---|
| CN103468955B (en) | 2016-09-07 |
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Effective date of registration: 20210721 Granted publication date: 20160907 |
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