CN104611574A - Method for refining scrap copper - Google Patents

Method for refining scrap copper Download PDF

Info

Publication number
CN104611574A
CN104611574A CN201510083426.2A CN201510083426A CN104611574A CN 104611574 A CN104611574 A CN 104611574A CN 201510083426 A CN201510083426 A CN 201510083426A CN 104611574 A CN104611574 A CN 104611574A
Authority
CN
China
Prior art keywords
copper
refining
shaft furnace
furnace
natural gas
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.)
Pending
Application number
CN201510083426.2A
Other languages
Chinese (zh)
Inventor
詹建
项荣芳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guan Hua Gold Smelting Co Ltd Of Chizhou City
Original Assignee
Guan Hua Gold Smelting Co Ltd Of Chizhou City
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guan Hua Gold Smelting Co Ltd Of Chizhou City filed Critical Guan Hua Gold Smelting Co Ltd Of Chizhou City
Priority to CN201510083426.2A priority Critical patent/CN104611574A/en
Publication of CN104611574A publication Critical patent/CN104611574A/en
Pending legal-status Critical Current

Links

Abstract

The invention discloses a method for refining scrap copper. A method for treating anode slime by a virtue of a medium-temperature chlorination method comprises the following steps: feeding, melting, oxidizing and removing slag by virtue of oxidation, reducing and deoxidizing, and casting to prepare a copper plate. Compared with the prior art, in the method for refining the scrap copper, the scrap copper is fed into a feeding hole formed in the top of a shaft furnace by virtue of a charging device of the shaft furnace, meanwhile, natural gas is introduced from nozzles formed in the periphery of the bottom of the shaft furnace to ensure that the copper is melted near the bottom, a furnace charge is preheated at the upper part by utilizing flue gas, and a charge column in the furnace moves downwards to form a continuous molten state metal flow. According to the method disclosed by the invention, anode refining is carried out in two stages, namely an oxidation period and a reduction period, wherein in the oxidation period, compressed air is introduced; in the reduction period, nitrogen-doped natural gas is utilized, so that reaction is complete, and raw materials are cheap; as the natural gas is adopted as a fuel during refining, and a dilute oxygen combustion technology is also adopted, the quantities of the fuel and the flue gas are reduced, and the purposes of saving energy and equipment investment and reducing emission are achieved. The process is small in environmental pollution, high in recovery rate, high in refining purity and small in comprehensive recovery cost.

Description

A kind of copper scap method of refining
Technical field
The present invention relates to a kind of refinery practice, particularly relate to a kind of copper scap method of refining.
Background technology
Along with the quickening of Chinese Industrialization process and the development of world economy, Mineral resources non-renewable are in a large number continued to consume, and resource supply and demand contradiction day is becoming tight.China is copper resource country very in short supply, is again smelting process industry country with fastest developing speed simultaneously, has become copper production and consumption big country maximum in the world at present.Copper is a kind of red metal, is also a kind of green metal simultaneously, says that it is green metal, mainly because its fusing point is lower, easily dissolves again, smelts, thus recycle significant.And copper scap amount is huge in industry, traditional copper scap refinery practice is divided into two large classes, namely directly utilize and indirect utilization, high-quality copper scrap is smelted directly into smart copper or copper alloy by direct utilization exactly, indirect utilization is the base metal by smelting in removing copper scap, and cast positive plate, then obtain electrolytic copper through electrolysis.Its processing step is loaded down with trivial details, refinement purity is low, cost recovery is high, contaminate environment, in view of above-mentioned defect, is necessary that designing a kind of copper scap method of refining improves in fact.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of copper scap method of refining, solves prior art complex steps, refinement purity is low, cost recovery is high, the problem of contaminate environment.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of copper scap method of refining, and the treatment process described in it is as follows:
1) charge melted copper scap to be added to by shaft furnace feeding device in the charging opening at shaft furnace top, pass into Sweet natural gas from the nozzle of shaft furnace bottom periphery simultaneously, copper is melted near bottom, flue gas is utilized to carry out preheating to the furnace charge on top, and the stock column in stove moves down, form one continuous print molten metal stream;
2) the copper liquid in oxidation slagging-off shaft furnace after fusing flows into rotary type refining anode furnace automatically, pressurized air is blasted in anode stove, sulphur and oxygen wherein react and produce sulfurous gas and enter in flue gas, and other impurity element and oxygen react and generates oxide compound slag making and remove;
3) deoxidation that reduces passes into the Sweet natural gas of nitrating in the copper liquid after slagging-off, and nitrogen and oxygen react produces oxides of nitrogen gas, oxygen unnecessary in removing copper liquid, and now copper liquid copper content can reach 99.5%;
4) copper coin anode slag processed of casting is transported to crane by cinder ladle by track flat-bed trailer can after work point, copper mine blowing system is returned after winching to the slow cooling of mold region by crane, copper water flows into quantitative pouring bag by anode furnace copper chute and tundish, after the copper water in pouring ladle reaches the weight of specifying, pouring ladle verts, cast in the copper mold pouring disc pouring machine into, the qualified positive plate fork truck cast out carries out transporting positive plate stockyard to.
Further, described step 1) the cold front heavy rain that sucks through charging opening of the afterbody of shaft furnace to 120 DEG C after after sack cleaner dedusting, send chimney emptying by shaft furnace smoke exhaust fan, during accidental state, the accident exhaust smoke valve at shaft furnace top is opened, discharge flue gas.
Further, described step 2) oxidising process in need postcombustion maintenance heat to balance, fuel adopts Sweet natural gas.
Further, described step 5) positive plate cooling adopt cool water shower mode.
Further, described refining adopts Sweet natural gas to be fuel, adopts rare oxygen combustion technology simultaneously.
Further, the secondary combustion of described flue gas after anode furnace is indoor to be mixed with dilution wind, and flue-gas temperature is down to less than 350 DEG C, then the air-cooler passing through specialty of gathering dust cools and flue gas collected by sack cleaner, send smoke evacuation chimney emptying by induced-draft fan.
Compared with prior art, this copper scap method of refining, copper scap is added to by shaft furnace feeding device in the charging opening at shaft furnace top, pass into Sweet natural gas from the nozzle of shaft furnace bottom periphery simultaneously, copper is melted near bottom, utilize flue gas to carry out preheating to the furnace charge on top, and the stock column in stove move down, and forms one continuous print molten metal stream; Anode refining is divided into two stages, oxidation period and reduction period, oxidation passes into pressurized air, reduction is the Sweet natural gas utilizing nitrating, and reaction is thorough, cheaper starting materials, refining adopts Sweet natural gas to be fuel, adopt rare oxygen combustion technology simultaneously, reduce fuel quantity and exhaust gas volumn, to reach the object of energy-saving and emission-reduction and saving facility investment.This process environments pollutes little, and the rate of recovery is high, and refining purity is high, and synthetical recovery cost is little.
Accompanying drawing explanation
Fig. 1 is copper scap method of refining process flow sheet
Following embodiment will further illustrate in conjunction with above-mentioned accompanying drawing.
Embodiment
Hereinafter, set forth multiple specific detail, to provide the thorough to the concept forming described embodiment basis.But to one skilled in the art, embodiment described obviously can be put into practice when not have in these specific detail some or all.In other cases, well-known treatment step is not specifically described.
As shown in Figure 1, a kind of copper scap method of refining, the treatment process described in it is as follows:
1) charge melted copper scap to be added to by shaft furnace feeding device in the charging opening at shaft furnace top, pass into Sweet natural gas from the nozzle of shaft furnace bottom periphery simultaneously, copper is melted near bottom, flue gas is utilized to carry out preheating to the furnace charge on top, and the stock column in stove moves down, form one continuous print molten metal stream;
2) the copper liquid in oxidation slagging-off shaft furnace after fusing flows into rotary type refining anode furnace automatically, pressurized air is blasted in anode stove, sulphur and oxygen wherein react and produce sulfurous gas and enter in flue gas, and other impurity element and oxygen react and generates oxide compound slag making and remove;
3) deoxidation that reduces passes into the Sweet natural gas of nitrating in the copper liquid after slagging-off, and nitrogen and oxygen react produces oxides of nitrogen gas, oxygen unnecessary in removing copper liquid, and now copper liquid copper content can reach 99.5%;
4) copper coin anode slag processed of casting is transported to crane by cinder ladle by track flat-bed trailer can after work point, copper mine blowing system is returned after winching to the slow cooling of mold region by crane, copper water flows into quantitative pouring bag by anode furnace copper chute and tundish, after the copper water in pouring ladle reaches the weight of specifying, pouring ladle verts, cast in the copper mold pouring disc pouring machine into, the qualified positive plate fork truck cast out carries out transporting positive plate stockyard to.
This copper scap method of refining, described step 1) the cold front heavy rain that sucks through charging opening of the afterbody of shaft furnace to 120 DEG C after after sack cleaner dedusting, send chimney emptying by shaft furnace smoke exhaust fan, during accidental state, the accident exhaust smoke valve at shaft furnace top is opened, discharge flue gas, described step 2) oxidising process in need postcombustion maintenance heat to balance, fuel adopts Sweet natural gas, described step 5) positive plate cooling adopt cool water shower mode, described refining adopts Sweet natural gas to be fuel, adopt rare oxygen combustion technology simultaneously, the secondary combustion of described flue gas after anode furnace is indoor to be mixed with dilution wind, flue-gas temperature is down to less than 350 DEG C, again through air-cooler cooling and the sack cleaner collection flue gas of specialty of gathering dust, send smoke evacuation chimney emptying by induced-draft fan.
The present invention is not limited to above-mentioned concrete embodiment, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion made, all drop within protection scope of the present invention.

Claims (6)

1. a copper scap method of refining, is characterized in that described treatment process is as follows:
1) charge melted copper scap to be added to by shaft furnace feeding device in the charging opening at shaft furnace top, pass into Sweet natural gas from the nozzle of shaft furnace bottom periphery simultaneously, copper is melted near bottom, flue gas is utilized to carry out preheating to the furnace charge on top, and the stock column in stove moves down, form one continuous print molten metal stream;
2) the copper liquid in oxidation slagging-off shaft furnace after fusing flows into rotary type refining anode furnace automatically, pressurized air is blasted in anode stove, sulphur and oxygen wherein react and produce sulfurous gas and enter in flue gas, and other impurity element and oxygen react and generates oxide compound slag making and remove;
3) deoxidation that reduces passes into the Sweet natural gas of nitrating in the copper liquid after slagging-off, and nitrogen and oxygen react produces oxides of nitrogen gas, oxygen unnecessary in removing copper liquid, and now copper liquid copper content can reach 99.5%;
4) copper coin anode slag processed of casting is transported to crane by cinder ladle by track flat-bed trailer can after work point, copper mine blowing system is returned after winching to the slow cooling of mold region by crane, copper water flows into quantitative pouring bag by anode furnace copper chute and tundish, after the copper water in pouring ladle reaches the weight of specifying, pouring ladle verts, cast in the copper mold pouring disc pouring machine into, the qualified positive plate fork truck cast out carries out transporting positive plate stockyard to.
2. copper scap method of refining as claimed in claim 1, it is characterized in that described step 1) the cold front heavy rain that sucks through charging opening of the afterbody of shaft furnace to 120 DEG C after after sack cleaner dedusting, send chimney emptying by shaft furnace smoke exhaust fan, during accidental state, the accident exhaust smoke valve at shaft furnace top is opened, discharge flue gas.
3. copper scap method of refining as claimed in claim 2, is characterized in that described step 2) oxidising process in need postcombustion maintenance heat balance, fuel employing Sweet natural gas.
4. copper scap method of refining as claimed in claim 3, is characterized in that described step 5) positive plate cooling adopt cool water shower mode.
5. copper scap method of refining as claimed in claim 4, is characterized in that described refining adopts Sweet natural gas to be fuel, adopts rare oxygen combustion technology simultaneously.
6. copper scap method of refining as claimed in claim 5, it is characterized in that the secondary combustion of described flue gas after anode furnace is indoor to mix with dilution wind, flue-gas temperature is down to less than 350 DEG C, again through air-cooler cooling and the sack cleaner collection flue gas of specialty of gathering dust, send smoke evacuation chimney emptying by induced-draft fan.
CN201510083426.2A 2015-02-15 2015-02-15 Method for refining scrap copper Pending CN104611574A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510083426.2A CN104611574A (en) 2015-02-15 2015-02-15 Method for refining scrap copper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510083426.2A CN104611574A (en) 2015-02-15 2015-02-15 Method for refining scrap copper

Publications (1)

Publication Number Publication Date
CN104611574A true CN104611574A (en) 2015-05-13

Family

ID=53146218

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510083426.2A Pending CN104611574A (en) 2015-02-15 2015-02-15 Method for refining scrap copper

Country Status (1)

Country Link
CN (1) CN104611574A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105499302A (en) * 2016-01-11 2016-04-20 赣州江钨拉法格高铁铜材有限公司 Production method of pure copper stranded wire
CN107760880A (en) * 2017-10-23 2018-03-06 铜陵市业永兴工贸有限责任公司 A kind of process for purifying miscellaneous copper
CN111121471A (en) * 2019-12-12 2020-05-08 铜陵有色金属集团股份有限公司 Method for treating anode furnace flue gas in copper smelting

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1390962A (en) * 2002-05-22 2003-01-15 金隆铜业有限公司 Process for refining raw copper bynon-oxidizing nitrogen-doping reducing pyrometallurgy
CN101338372A (en) * 2007-07-04 2009-01-07 大冶有色金属公司 Reducing process for mixing natural gas and steam in operation of copper fire refining
CN101845556A (en) * 2010-06-10 2010-09-29 江西稀有金属钨业控股集团有限公司 Shaft furnace and rotary furnace combined type fire refining process for raw red copper
CN101880779A (en) * 2010-06-07 2010-11-10 中国瑞林工程技术有限公司 Solid copper material processing method and apparatus thereof
CN203530396U (en) * 2013-10-31 2014-04-09 湖南金龙国际铜业有限公司 Natural gas reduction device for refining waste impure copper

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1390962A (en) * 2002-05-22 2003-01-15 金隆铜业有限公司 Process for refining raw copper bynon-oxidizing nitrogen-doping reducing pyrometallurgy
CN101338372A (en) * 2007-07-04 2009-01-07 大冶有色金属公司 Reducing process for mixing natural gas and steam in operation of copper fire refining
CN101880779A (en) * 2010-06-07 2010-11-10 中国瑞林工程技术有限公司 Solid copper material processing method and apparatus thereof
CN101845556A (en) * 2010-06-10 2010-09-29 江西稀有金属钨业控股集团有限公司 Shaft furnace and rotary furnace combined type fire refining process for raw red copper
CN203530396U (en) * 2013-10-31 2014-04-09 湖南金龙国际铜业有限公司 Natural gas reduction device for refining waste impure copper

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
宋修明: "《炼铜企业管理探索与实践》", 31 January 2012 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105499302A (en) * 2016-01-11 2016-04-20 赣州江钨拉法格高铁铜材有限公司 Production method of pure copper stranded wire
CN107760880A (en) * 2017-10-23 2018-03-06 铜陵市业永兴工贸有限责任公司 A kind of process for purifying miscellaneous copper
CN111121471A (en) * 2019-12-12 2020-05-08 铜陵有色金属集团股份有限公司 Method for treating anode furnace flue gas in copper smelting

Similar Documents

Publication Publication Date Title
CN103421955B (en) Zinc leaching slag treatment method
CN103740945B (en) A kind of method of enriching and recovering cadmium from plumbous smelting system
CN103361491B (en) Liquid-state high-lead slag side-blowing water-gas reduction process
CN103993176B (en) Oxygen-enriched top blowing melting-liquid high lead dross side-blown direct-reduction refining splicer skill
CN101705366B (en) Direct lead smelting method for processing zinc smelting slag by matching
CN204438744U (en) A kind of top and bottom blowing copper stove for liquid Copper Matte Converting copper metallurgy
CN106521189A (en) Oxygen-enriched molten pool antimony refining production process
CN105238938A (en) Three continuous furnace technology for continuous production of anode copper with copper concentrate
CN101148705A (en) Oxygen-enriched air refining method for copper by using converting furnace
CN107287442A (en) A kind of continuous copper smelting apparatus and copper smelting method
CN105950871B (en) A kind of method of the conversion of scrap lead cream hydrothermal reduction and low-temperature reduction melting
CN104894380B (en) The directed melting process for cleanly preparing of a kind of closed oxygen-enriched sub-pressure high-efficient smelting furnace
CN104611574A (en) Method for refining scrap copper
CN102586618B (en) Process of smelting iron pyrite
CN104946899B (en) Edge transmission top-blown converter and depleted sedimentation furnace combined lead dross treatment method
CN102888519A (en) Method for processing complex nickel raw material by utilizing flash smelting system
CN103643051A (en) Process and device for treating copper-lead smelting mixed slag through bottom-blowing bath smelting technology
CN106399713A (en) Oxygen enrichment bottom blowing copper smelting process
CN106319242A (en) Method for continuously and directly smelting lead
CN104152675B (en) A kind of method utilizing high-silicon type cassiterite concentrate to prepare metallic tin and sodium silicate
CN203559108U (en) System for simultaneously smelting lead and zinc
CN103014369A (en) Smelting process of both side-blown bath
CN202081154U (en) Oxygen side-blowing continuous converting furnace
CN103667738B (en) Oxygen-enriched side-blown dual-area bath smelting furnace and cupric complex feedstock refining matte method thereof
CN103882243A (en) Clean production balanced lead making technology

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
EXSB Decision made by sipo to initiate substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20150513

RJ01 Rejection of invention patent application after publication