CN107287442A - A kind of continuous copper smelting apparatus and copper smelting method - Google Patents

A kind of continuous copper smelting apparatus and copper smelting method Download PDF

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Publication number
CN107287442A
CN107287442A CN201710369539.8A CN201710369539A CN107287442A CN 107287442 A CN107287442 A CN 107287442A CN 201710369539 A CN201710369539 A CN 201710369539A CN 107287442 A CN107287442 A CN 107287442A
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CN
China
Prior art keywords
copper
copper smelting
fine coal
continuous
smelting
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Pending
Application number
CN201710369539.8A
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Chinese (zh)
Inventor
鲁兴武
朱来东
余江鸿
李俞良
陈博
陈一博
程亮
易超
马爱军
陈文波
张恩玉
李守荣
韩晓龙
崔海瑞
曹桂银
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Northwest Research Institute of Mining and Metallurgy
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Northwest Research Institute of Mining and Metallurgy
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Priority to CN201710369539.8A priority Critical patent/CN107287442A/en
Publication of CN107287442A publication Critical patent/CN107287442A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B15/00Obtaining copper
    • C22B15/0026Pyrometallurgy
    • C22B15/0028Smelting or converting
    • C22B15/0052Reduction smelting or converting
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B15/00Obtaining copper
    • C22B15/0026Pyrometallurgy
    • C22B15/0028Smelting or converting
    • C22B15/005Smelting or converting in a succession of furnaces

Abstract

The invention discloses a kind of continuous copper smelting apparatus and copper smelting method, furnace chamber point slag making area and Zao Tong areas, subregion is smelted, control oxygen lance angular range and fine coal angle of gun scope, realize the step of matte one obtain blister copper fine coal be from body of heater sidepiece and bottom be injected directly into melt in participate in directly reaction, drastically increase reaction efficiency.Technique is simple, reduced investment.Environmental pollution is small:The exhaust gas volumn S0 of generation2Concentration is high, is conducive to relieving haperacidity.Construction investment province, product cost are low, comprehensive utilization of resources level is high, and comprehensive energy consumption is low.

Description

A kind of continuous copper smelting apparatus and copper smelting method
Technical field
The invention belongs to metal smelt field, a kind of smelting process of continual copper smelting is related in particular to.
Background technology
At present, continuous converting technology direction of the domestic and international cupper smelting all towards clean manufacturing is developed, with regard to copper For blowing, the world today upper more than 90% all be use PS converters, the technique be interruption operation, during copper matte regulus bag in workshop Inside it is transported through, easily causes SO2The loss of flue gas low latitude, adds charging and converting process, and flue gas is difficult to be fully sealed, there is also Different degrees of loss phenomenon, make SP bessemerize operation operating environment it is very poor.This be current Copper making face it is worldwide Technical bottleneck, all is trying hard to solve this problem.Therefore, actively seek or develop big production capacity, investment and operating cost are low, operate Continuously, environmentally friendly converting process is imperative.At present, the technique of the continuous converting copper of domestic and international application has Japan to grind The Mitsubishi process of hair and Flash Smelting Furnace continuous converting, continual copper smelting is realized using the connection of three stove chutes, but its waste copper content is too high, Resource utilization is low;Continuous flash blowing be the end of the seventies in last century U.S. Kennecott company propose matte continuous converting " solid matte oxygen blowing method ", replace P-S converters technique, nineteen ninety-five realize industrialization.Second flash of August in 2007 Converting furnace is gone into operation in Chinese Yanggu Xiang Guang smelteries, starts in October, 2008 to reach designed capacity, but the process costs are high, ice Copper needs to enter back into the progress of flash converting furnace after cooling ball milling, also consumes a part of energy, site environment nor very good, heat energy Using unreasonable.
In recent years, with the increasingly raising and the continued downturn of non-ferrous metal industry to smelting enterprise's environmental requirement, enterprise is forced Industry reduces cost from the optimization of technique, and substantial amounts of work has been done in terms of improving core competitiveness.Patent-" twin furnace multiple gun top blast connects Continuous converting furnace "(CN103276223), by the optimization to converter, connect slag making stove and make copper stove, realize realization and continuously enter ice Copper, continuous blast, continuous slag making, the continuous converting process continuously slagged tap, continuously or discontinuously release blister copper, but needs are in Liang Tai Continuous converting is realized in stove, there is certain environmental pollution.A kind of patent-" technique of use oxygen bottom blown furnace continual copper smelting And its device "(CN101165196), it is proposed that the technique and device of continual copper smelting are carried out using oxygen bottom blown furnace, but it is needed Leading portion is wanted to produce high-grade matte, it is necessary to which system changes copper metallurgy enterprise technique, investment is larger.
The content of the invention
The present invention proposes the technique and device of a kind of continual copper smelting, and process cleans environmental protection, it is easy to accomplish industrialized production is adopted - subregion converting process is blown with bottom side, realizes that matte obtains blister copper in a stove.
The technical solution adopted by the present invention is:A kind of continuous copper smelting apparatus, the type of furnace is that partition wall handle is set in horizontal circular, stove Furnace chamber is divided into two rooms, i.e. oxidizing atmosphere slag making area and reducing atmosphere Zao Tong areas, and partition wall bottom sets a nearly oval hole by two Individual room connection, forms the convection current of metal phase and slag phase, oxidizing atmosphere slag making area has slag-drip opening, reducing atmosphere Zao Tong areas to put copper Mouthful, blister copper is continuously discharged from the continuous discharge of copper mouthful, slag is put by slag-drip opening, also can be according to actual conditions in actual production process Intermittent discharge, multipair oxygen entrance and multipair fine coal reducing agent are designed with the slag making area of body of heater, the sidepiece in Zao Tong areas, bottom Entrance, oxygen entrance is equipped with oxygen lance, and single branch oxygen lance setting angle and vertical direction angle are 5~26 °, multipair Fine coal reducing agent entrance is equipped with fine coal spray gun, and branch fine coal spray gun setting angle and vertical direction angle are 2~18 °, according to position Different angular dimensions differences are put, the size of every fine coal spray gun angle is inversely proportional with putting the positional distance of copper mouthful.
The oxidizing atmosphere slag making area internal diameter is 2.6-4.5m, and length is 6m-12m, and reducing atmosphere Zao Tong areas internal diameter is 2.2m-3.5m, body of heater overall length is 30m-45m.Specific data should determine to calculate body of heater chi according to the size of capacity and material characteristic It is very little.
The integrated sealing of body of heater can fascinate structure, meet the condition of system hot repair.
Body of heater cooling system is organic ion liquid system, and in the absence of leakage explosion danger, heat-exchanger rig uses steel, enters one Step reduction investment.
Using the copper smelting method of the continuous copper smelting apparatus, following steps are specifically included:
(1)Matte is added in stove by continuous copper smelting apparatus charge door, oxygen is sent into by oxygen lance and blown, oxygen Angle of gun control range is 5-25 °;Fine coal is sprayed into by fine coal spray gun to be reduced, fine coal angle of gun control range is 2- 15 °, by matte continuous converting into blister copper and clinker;While blowing, by slag making required amount continuous and quantitative addition quartz and Lime stone, controls 1200-1350 DEG C of blowing temperature;
(2)The blister copper of continuous copper smelting apparatus output, puts copper mouthful releasing by hydrocone type, anode workshop section is delivered to by chute, by sun The routine work of pole workshop section, is cast as copper anode plate and send electrolytic tank electrolysis.
According to discard slag with copper and the wherein change of occurrenceof Fe, fine coal is with 50~200kg/h, nitrogen with 15~45m3/h It is protective gas, cooling water with 10~38m3/ h is sprayed into by spray gun, realizes the reduction of ferroso-ferric oxide content, optimizes the flowing of slag Property.
Clinker returns to continuous copper smelting apparatus after ore grinding, ore dressing.
The continuous copper smelting apparatus of the present invention, matte directly enters stove, is fully able to the complicated low-grade matte of processing, is conducive to money Source is efficiently utilized, and disposal ability is up to 60-100t/h.
Because present invention process unit is completed in a table apparatus, oxygen concentration is high, flue gas SO2Concentration is high, and exhaust gas volumn is small, sulphur Recovery utilization rate is high, and reducing agent directly uses fine coal without coke, fine coal be from body of heater sidepiece and bottom be injected directly into melt in join With directly reacting, reaction efficiency is drastically increased.
The present invention has following features or beneficial effect compared with prior art:
(1)Technique is simple, reduced investment:The technique realizes that the step of matte one obtains blister copper, short flow, and required equipment and labour are not Many, producing cost and construction investment are about lower by 40% than Mitsubishi process and flash blowing respectively and 30%~40%.
(2)Operating rate is high:Converter life is long, up to more than 2.5-3;Life-span of oxygen lance is long, generally 20~40 days, most long Up to 2 months, change a collection of oxygen rifle and take no more than 6 hours;
(3)Environmental pollution is small:The exhaust gas volumn that oxygen-enriched air smelting is produced is l/4~1/5, S0 of traditional lead smelting process2Concentration is high, is conducive to Relieving haperacidity." three wastes " discharge meet the requirement of environmental protection.
These characteristics or effect ensure that the present invention has system and the connecting of existing Copper making smelting system good, build Scalable section is strong, and construction investment province, metal recovery rate is high, product cost is low, comprehensive utilization of resources level high, comprehensive energy consumption It is low, be the advanced copper metallurgy technique of following industry development the advantages of operating environment is excellent.
Brief description of the drawings
Fig. 1 is continuous copper smelting apparatus figure;
Fig. 2 for Fig. 1 A-A to, B-B direction, C-C to profile;
Fig. 3 is present invention process flow chart;
In figure, 1- Zao Tong areas, 2- slag making area, 3- partition walls, 4- fine coal spray guns, 5- radiation flues, 6- puts copper mouthful.
Embodiment
The principles and features of the present invention are described below, and the given examples are served only to explain the present invention, is not intended to limit Determine the scope of the present invention.
Matte compositional ranges of the present invention are Cu40-75%
Embodiment 1:
Matte 10t, grade 40%.
(1)Matte is added in stove by continuous copper smelting apparatus charge door, oxygen is sent into by oxygen lance and blown, Oxygen lance angle control range is 5 °;Fine coal is sprayed into by fine coal spray gun to be reduced, fine coal angle of gun control range is 2 °, by matte continuous converting into blister copper and clinker;While blowing, by the addition quartz and stone of slag making required amount continuous and quantitative Lime stone, controls 1200 DEG C of blowing temperature;
(2)The blister copper of continual copper smelting stove output, puts copper mouthful releasing by hydrocone type, anode workshop section is delivered to by chute, by anode Workshop section's routine work, is cast as copper anode plate and send electrolytic tank electrolysis.
The comprehensive yield of calculating is:Blister copper:Cu:98.5%, S:0.8%, blow Copper in Slag:3.2%, comprehensive energy consumption(Matte- Blister copper):235kgce/t.
Embodiment 2:
Matte 15t, grade 45%.
(1)Matte is added in stove by continuous copper smelting apparatus charge door, oxygen is sent into by oxygen lance and blown, Oxygen lance angle control range is 10 °;Fine coal is sprayed into by fine coal spray gun to be reduced, fine coal angle of gun control range is 5 °, by matte continuous converting into blister copper and clinker;While blowing, by the addition quartz and stone of slag making required amount continuous and quantitative Lime stone, controls 1200 DEG C of blowing temperature;
(2)The blister copper of continual copper smelting stove output, puts copper mouthful releasing by hydrocone type, anode workshop section is delivered to by chute, by anode Workshop section's routine work, is cast as copper anode plate and send electrolytic tank electrolysis.
The comprehensive yield of calculating is:Blister copper:Cu:98.7%, S:0.6%, blow Copper in Slag:3.1%, comprehensive energy consumption(Matte- Blister copper):225kgce/t.
Embodiment 3:
Matte 15t, grade 70%.
(1)Matte is added in stove by continuous copper smelting apparatus charge door, oxygen is sent into by oxygen lance and blown, Oxygen lance angle control range is 15 °;Fine coal is sprayed into by fine coal spray gun to be reduced, fine coal angle of gun control range is 10 °, by matte continuous converting into blister copper and clinker;While blowing, by the addition quartz of slag making required amount continuous and quantitative, control 1250 DEG C of blowing temperature processed;
(2)The blister copper of continual copper smelting stove output, puts copper mouthful releasing by hydrocone type, anode workshop section is delivered to by chute, by anode Workshop section's routine work, is cast as copper anode plate and send electrolytic tank electrolysis.
The comprehensive yield of calculating is:Blister copper:Cu:99.1%, S:0.6%, blow Copper in Slag:3.8%, comprehensive energy consumption(Matte- Blister copper):232kgce/t.
Embodiment 4:
Matte 10t, grade 65%.
(1)Matte is added in stove by continuous copper smelting apparatus charge door, oxygen is sent into by oxygen lance and blown, Oxygen lance angle control range is 20 °;Fine coal is sprayed into by fine coal spray gun to be reduced, fine coal angle of gun control range is 15 °, by matte continuous converting into blister copper and clinker;While blowing, by slag making required amount continuous and quantitative addition quartz and Lime stone, controls 1350 DEG C of blowing temperature;
(2)The blister copper of continual copper smelting stove output, puts copper mouthful releasing by hydrocone type, anode workshop section is delivered to by chute, by anode Workshop section's routine work, is cast as copper anode plate and send electrolytic tank electrolysis.
The comprehensive yield of calculating is:Blister copper:Cu:98.5%, S:0.8%, blow Copper in Slag:3.2%, comprehensive energy consumption(Matte- Blister copper):235kgce/t.
Embodiment 5:
Matte 10t, grade 60%.
(1)Matte is added in stove by continuous copper smelting apparatus charge door, oxygen is sent into by oxygen lance and blown, Oxygen lance angle control range is 25 °;Fine coal is sprayed into by fine coal spray gun to be reduced, fine coal angle of gun control range is 15 °, by matte continuous converting into blister copper and clinker;While blowing, by the addition quartz of slag making required amount continuous and quantitative, control 1300 DEG C of blowing temperature processed;
(2)The blister copper of continual copper smelting stove output, puts copper mouthful releasing by hydrocone type, anode workshop section is delivered to by chute, by anode Workshop section's routine work, is cast as copper anode plate and send electrolytic tank electrolysis.
The comprehensive yield of calculating is:Blister copper:Cu:98.7%, S:0.7%, blow Copper in Slag:3.4%, comprehensive energy consumption(Matte- Blister copper):238kgce/t.
The preferable case study on implementation of the present invention is the foregoing is only, is not intended to limit the invention, all spirit in the present invention With any modification, equivalent substitution and improvements made within principle etc., it should be included in the scope of the protection.
Above-described embodiment illustrates that the present apparatus and method can realize seamless connection with the smelting system of existing cupper smelting, The matte of different grades can be handled, Copper in Slag is reduced using fine coal, reasonably optimizing furnace binding, realize molten bath rationally every It is disconnected to be shunted with clinker.This technique and plant construction reduced investment, the type of furnace is changeable, is adjusted according to copper resource amount, is adapted to 50,000 The construction of the t/a of t-20 ten thousand difference Copper making scales, metal recovery rate is high, product cost is low, comprehensive utilization of resources level is high, comprehensive The advantages of energy consumption is low, operating environment is excellent, is the advanced copper metallurgy technique of following industry development.

Claims (7)

1. a kind of continuous copper smelting apparatus, it is characterised in that:The type of furnace is to set partition wall that furnace chamber is divided into two in horizontal circular, stove Room, i.e. oxidizing atmosphere slag making area and reducing atmosphere Zao Tong areas, partition wall bottom set a hole and connect two rooms, oxidizing atmosphere slag making Area has slag-drip opening, reducing atmosphere Zao Tong areas to put copper mouthful, and multipair oxygen entrance is provided with and multipair in body of heater device sidepiece, bottom Fine coal reducing agent entrance, oxygen entrance is equipped with oxygen lance, and single branch oxygen lance setting angle and vertical direction angle are 5 ~26 °, multipair fine coal reducing agent entrance is equipped with fine coal spray gun, and branch fine coal spray gun setting angle and vertical direction angle be 2~ 18 °, different according to the different angular dimensions in position, the size of every fine coal spray gun angle is inversely proportional with putting the positional distance of copper mouthful.
2. a kind of continuous copper smelting apparatus according to claim 1, it is characterised in that:The oxidizing atmosphere slag making area internal diameter For 2.6- 4.5m, length is 6m-12m, and reducing atmosphere Zao Tong areas internal diameter is 2.2m-3.5m, and body of heater overall length is 30m-45m.
3. a kind of continuous copper smelting apparatus according to claim 1, it is characterised in that:The integrated sealing of body of heater can fascinate knot Structure.
4. a kind of continuous copper smelting apparatus according to claim 1, it is characterised in that:Body of heater cooling system is organic ion liquid System, heat-exchanger rig is steel.
5. the copper smelting method of continuous copper smelting apparatus described in a kind of utilization claim 1 or 2, it is characterised in that:Specifically include following Step:
(1)Matte is added in stove by continuous copper smelting apparatus charge door, oxygen is sent into by oxygen lance and blown, oxygen Angle of gun control range is 5-25 °;Fine coal is sprayed into by fine coal spray gun to be reduced, fine coal angle of gun control range is 2- 15 °, by matte continuous converting into blister copper and clinker;While blowing, quartz and lime are continuously added by slag making required amount Stone, controls 1200-1350 DEG C of blowing temperature;
(2)The blister copper of continuous copper smelting apparatus output, puts copper mouthful releasing by hydrocone type, anode workshop section is delivered to by chute, by sun The routine work of pole workshop section, is cast as copper anode plate and send electrolytic tank electrolysis.
6. the copper smelting method of continuous copper smelting apparatus is utilized according to claim 5, it is characterised in that:Fine coal is with 50~200kg/ H, nitrogen are with 15~45m3/ h is protective gas, cooling water with 10~38m3/ h is sprayed into by spray gun.
7. the copper smelting method of continuous copper smelting apparatus is utilized according to claim 5, it is characterised in that:Clinker is through ore grinding, ore dressing After return to continuous copper smelting apparatus.
CN201710369539.8A 2017-05-23 2017-05-23 A kind of continuous copper smelting apparatus and copper smelting method Pending CN107287442A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108277361A (en) * 2018-04-08 2018-07-13 中国恩菲工程技术有限公司 A kind of blister copper pyrogenic process continuous refining furnace
CN108425021A (en) * 2018-04-08 2018-08-21 中国恩菲工程技术有限公司 A kind of blister copper pyrogenic process continuous refining process
CN108559855A (en) * 2018-04-08 2018-09-21 中国恩菲工程技术有限公司 A kind of blister copper pyrogenic process continuous refining device
CN108588442A (en) * 2018-04-08 2018-09-28 中国恩菲工程技术有限公司 A kind of blister copper pyrogenic process continuous refining process
CN111394592A (en) * 2020-04-20 2020-07-10 中南大学 Method for reducing copper content in smelting slag
CN111500874A (en) * 2020-05-08 2020-08-07 中南大学 Directional lead-zinc distribution regulating method in copper smelting process

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Publication number Priority date Publication date Assignee Title
JPS57169028A (en) * 1981-04-09 1982-10-18 Furukawa Mining Co Ltd Smelting furnace
CN1033843A (en) * 1988-05-14 1989-07-12 白银有色金属公司 Silver molten bath oxygen-rich copper-smelting method and device thereof
JPH08269586A (en) * 1995-03-30 1996-10-15 Nikko Kinzoku Kk Operation of converter for copper
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
CN202107747U (en) * 2011-06-14 2012-01-11 白银有色集团股份有限公司 Silver furnace smelting in copper smelting method
CN103952571A (en) * 2014-04-18 2014-07-30 东营鲁方金属材料有限公司 One-step copper smelting technology and device thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57169028A (en) * 1981-04-09 1982-10-18 Furukawa Mining Co Ltd Smelting furnace
CN1033843A (en) * 1988-05-14 1989-07-12 白银有色金属公司 Silver molten bath oxygen-rich copper-smelting method and device thereof
JPH08269586A (en) * 1995-03-30 1996-10-15 Nikko Kinzoku Kk Operation of converter for copper
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
CN202107747U (en) * 2011-06-14 2012-01-11 白银有色集团股份有限公司 Silver furnace smelting in copper smelting method
CN103952571A (en) * 2014-04-18 2014-07-30 东营鲁方金属材料有限公司 One-step copper smelting technology and device thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108277361A (en) * 2018-04-08 2018-07-13 中国恩菲工程技术有限公司 A kind of blister copper pyrogenic process continuous refining furnace
CN108425021A (en) * 2018-04-08 2018-08-21 中国恩菲工程技术有限公司 A kind of blister copper pyrogenic process continuous refining process
CN108559855A (en) * 2018-04-08 2018-09-21 中国恩菲工程技术有限公司 A kind of blister copper pyrogenic process continuous refining device
CN108588442A (en) * 2018-04-08 2018-09-28 中国恩菲工程技术有限公司 A kind of blister copper pyrogenic process continuous refining process
CN111394592A (en) * 2020-04-20 2020-07-10 中南大学 Method for reducing copper content in smelting slag
CN111500874A (en) * 2020-05-08 2020-08-07 中南大学 Directional lead-zinc distribution regulating method in copper smelting process

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Application publication date: 20171024