CN103468955B - A kind of copper scap smelting process - Google Patents
A kind of copper scap smelting process Download PDFInfo
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- CN103468955B CN103468955B CN201310363492.6A CN201310363492A CN103468955B CN 103468955 B CN103468955 B CN 103468955B CN 201310363492 A CN201310363492 A CN 201310363492A CN 103468955 B CN103468955 B CN 103468955B
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
A kind of copper scap smelting process, charger passes through the charge door of body of heater end face side to refining furnace continuous-feeding, natural gas and oxygen are sprayed into from bottom by spray gun, gas blasts the agitation to molten bath simultaneously, melt for solid-state copper scap, oxidation provides good heat and mass condition, it is interrupted releasing by the copper mouth of putting of charge door opposing end surface side after copper scap fusing oxidation, it is transported to be cast into positive plate after reduction furnace reduces by traveling crane, the slag generated is released by slag tap, the cigarette ash reclaimed by flash cold column can be returned to refining furnace and smelt, treat Pb, when Zn enrichment is too high, open circuit processes；Advantage is that the thermal efficiency improves, and energy consumption reduces；Solve the environmental issue of flue gas in copper scap smelting process.
Description
Technical field
The invention belongs to nonferrous metallurgy field, relate to the smelting process of a kind of copper scap.
Background technology
Copper scap is because of the smelting of its good regeneration characteristic, always copper and the important source material of processing.In " city mineral products ", reclaimed copper is one of nonferrous metal resource that source is wide and quantity is big.The ratio that Chinese reclaimed copper yield in 2010 accounts for primary copper yield is about 30%, and along with all fields of national economy copper consumption is continuously increased, the proportion of reclaimed copper industry will gradually rise.But reclaimed copper smelting technique development at present is limited, copper scap is smelted and is all used single stove discontinuous running.Single more than 100 tons smelting furnace smelting cycles of stove are usually more than 24h, and smelting cycle is long, and environmental protection condition is poor.Now copper scap smelts 80% employing reverberatory furnace list stove operation, mainly by carbonaceous fuel combustion heat release, is conducted heat melting solid waste material by furnace air, and heat-transfer effect is poor, energy consumption height.And more advanced copper scap smelting process, such as the smelting process such as tilting furnace, Kaldo Furnace, expense of introducing is the highest, and structure is complicated, and it is low still to fail to solve the above-mentioned thermal efficiency, and smelting cycle length, single series smelt the problems such as small scale.
Summary of the invention
It is an object of the invention to avoid the deficiencies in the prior art, and a kind of copper scap smelting process is provided.
The technical scheme is that a kind of copper scap smelting process, copper scap hangs on material-preparing machine by crane, material-preparing machine requires, by push rod, block is gradually pushed to track-mounted charger according to master control, charger passes through the charge door of body of heater end face side to refining furnace continuous-feeding, natural gas and oxygen are sprayed into from bottom by spray gun, gas blasts the agitation to molten bath simultaneously, it is interrupted releasing by the copper mouth of putting of charge door opposing end surface side after copper scap fusing oxidation, it is transported to be cast into positive plate after reduction furnace reduces by traveling crane, the slag generated is released by slag tap, reclaimed by flash cold column, return to refining furnace smelt, treat Pb, when Zn enrichment is too high, open circuit processes；The copper mass degree of described copper scap raw material is not less than 80%；The described oxygen-rich concentration in refining furnace is 50%-98%；Described natural gas is 0.5 with the volume ratio of oxygen；Oxygen pressure in described refining furnace is 0.4-0.6MPa；The described temperature in molten bath is 1230-1250 DEG C；Fe/SiO in described slag2For 1.6-1.8；Described flash cold column flue gas exit temperature is 180-185 DEG C, and cigarette ash is mainly composed of Cu, Fe, Pb, Zn.
Compared with prior art, the present invention has an advantage highlighted below:
1, the present invention solves the working condition discontinuity that prior art list stove discontinuous running (fusing-oxidationreduction-casting) causes.Continuous dosing, continuous melting can make production scale be more than more than 2 times of existing same size equipment, and production capacity significantly increases；Continuous print flue gas can ensure that minimizing of flue gas subsequent processing device is purchased, and fume treatment condition is more preferable；
2, existing copper scap smelting technique all uses burner to heat burner hearth air from above, adds heat fusing solid-state copper scap by heat radiation and convection current, and heat transfer medium is air.The present invention uses oxygen and natural gas to be injected directly into molten bath from furnace bottom, and violent chemical reaction occurs in molten bath, releases substantial amounts of heat, the copper molten bath that heating has been melted, is carried out the copper not melted in heated molten bath by heat transfer and convection current, and heat transfer medium is copper.And the thermal conductivity of copper improves much larger than air, the thermal efficiency, energy consumption reduces；
3, due to the fact that and realize continuity in fusing and oxidation stage, it is ensured that smelting furnace uses continuous negative pressure, prevents flue gas to be better than existing periodic job technique from body of heater each mouth of pipe loss, environmental protection condition.Owing to flue gas continuity is good, can preferably the active ingredient in low-grade copper scap flue gas during smelting be reclaimed when fume treatment, by innoxious for two English, tail gas qualified discharge；
4, the reduction shorter used time in copper scap smelting cycle and casting function are concentrated in existing Rotary Anode Furnace by the present invention, take full advantage of the existing Rotary Anode Furnace good result to hot Copper treatment.Two stove collocation, thoroughly solve the environmental issue of flue gas in copper scap smelting process.
Accompanying drawing explanation
Fig. 1 is the flow chart of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described in detail.
A kind of copper scap smelting process, copper scap hangs on material-preparing machine by crane, material-preparing machine requires, by push rod, block is gradually pushed to track-mounted charger according to master control, charger passes through the charge door of body of heater end face side to refining furnace continuous-feeding, natural gas and oxygen are sprayed into from bottom by spray gun, gas blasts the agitation to molten bath simultaneously, melt for solid-state copper scap, oxidation provides good heat and mass condition, it is interrupted releasing by the copper mouth of putting of charge door opposing end surface side after copper scap fusing oxidation, it is transported to be cast into positive plate after reduction furnace reduces by traveling crane, the slag generated is released by slag tap, the cigarette ash main component reclaimed by flash cold column is Cu, Fe, Pb, the elements such as Zn, refining furnace can be returned to smelt, treat Pb, when Zn enrichment is too high, open circuit processes.
Wherein: raw material consists of:
Technical conditions are:
Products obtained therefrom technical indicator is
Claims (1)
- null1. a copper scap smelting process，Copper scap is hung on material-preparing machine by crane，Material-preparing machine requires, by push rod, block is gradually pushed to track-mounted charger according to master control，It is characterized in that: charger passes through the charge door of body of heater end face side to refining furnace continuous-feeding，Natural gas and oxygen are sprayed into from bottom by spray gun，Gas blasts the agitation to molten bath simultaneously，It is interrupted releasing by the copper mouth of putting of charge door opposing end surface side after copper scap fusing oxidation，It is transported to be cast into positive plate after reduction furnace reduces by traveling crane，The slag generated is released by slag tap，Reclaimed by flash cold column，Return to refining furnace smelt，Treat Pb、When Zn enrichment is too high, open circuit processes，The copper mass degree of copper scap raw material is not less than 80%，Oxygen-rich concentration in refining furnace is 50%-98%，Natural gas is 0.5 with the volume ratio of oxygen，Oxygen pressure in refining furnace is 0.4-0.6MPa，Temperature in molten bath is 1230-1250 DEG C，Fe/SiO in slag2 For 1.6-1.8, flash cold column flue gas exit temperature is 180-185 DEG C, and cigarette ash is mainly composed of Cu, Fe, Pb, Zn.
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| CN201310363492.6A CN103468955B (en) | 2013-08-20 | 2013-08-20 | A kind of copper scap smelting process |
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| CN201310363492.6A CN103468955B (en) | 2013-08-20 | 2013-08-20 | A kind of copper scap smelting process |
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| CN103468955A CN103468955A (en) | 2013-12-25 |
| CN103468955B true CN103468955B (en) | 2016-09-07 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104694767B (en) * | 2015-03-19 | 2017-02-01 | 谢彩红 | 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 |
| CN109338109B (en) * | 2018-11-19 | 2020-02-07 | 北京科技大学 | Method for separating valuable metals from high-zinc lead tin scrap copper |
| CN113528825B (en) * | 2021-06-25 | 2023-05-16 | 江西华赣瑞林稀贵金属科技有限公司 | Method for recycling valuable metals through electronic waste and multi-metal solid waste smelting |
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| JPS5693837A (en) * | 1979-11-28 | 1981-07-29 | Southwire Co | Production of anode copper |
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| US5398915A (en) * | 1990-11-20 | 1995-03-21 | Mitsubishi Materials Corporation | Apparatus for continuous copper smelting |
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| 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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| 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 |
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