CN102234725A - Continuous production technology for miscellaneous copper recycling and positive plate casting - Google Patents

Continuous production technology for miscellaneous copper recycling and positive plate casting Download PDF

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Publication number
CN102234725A
CN102234725A CN2010101562313A CN201010156231A CN102234725A CN 102234725 A CN102234725 A CN 102234725A CN 2010101562313 A CN2010101562313 A CN 2010101562313A CN 201010156231 A CN201010156231 A CN 201010156231A CN 102234725 A CN102234725 A CN 102234725A
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CN
China
Prior art keywords
copper
furnace
copper water
stove
casting
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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
CN2010101562313A
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Chinese (zh)
Inventor
鲁落成
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.)
DAYE NONFERROUS METALS GROUP HOLDINGS Co Ltd
Daye Nonferrous Metals Co Ltd
Daye Nonferrous Design and Research Institute Co Ltd
Original Assignee
DAYE NONFERROUS METALS GROUP HOLDINGS Co Ltd
Daye Nonferrous Metals Co Ltd
Daye Nonferrous Design and Research Institute Co Ltd
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Application filed by DAYE NONFERROUS METALS GROUP HOLDINGS Co Ltd, Daye Nonferrous Metals Co Ltd, Daye Nonferrous Design and Research Institute Co Ltd filed Critical DAYE NONFERROUS METALS GROUP HOLDINGS Co Ltd
Priority to CN2010101562313A priority Critical patent/CN102234725A/en
Publication of CN102234725A publication Critical patent/CN102234725A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a continuous production technology for miscellaneous copper recycling and positive plate casting. The technology is characterized in that: a melting furnace, an oxidation furnace, a reduction furnace, and a holding furnace are orderly connected into an integral whole according to the technical processes; after a first feeding process, the following operations are carried out simultaneously in the corresponding furnaces: a. feeding and melting operations in the melting furnace; b. oxidizing and slagging operations in the oxidation furnace; c. reducing and deoxidizing operations in the reduction furnace; d. storing and heat maintaining operations in the holding furnace; e. copper outputting and casting operations. The technology provided by the invention has advantages of low energy consumption, continuous production, and high production efficiency.

Description

Composition brass regeneration casting positive plate continuous production processes
(1) technical field: the present invention relates to a kind of composition brass regeneration casting positive plate continuous production processes, the every copper raw material that can directly produce positive plate by refinery process can utilize this explained hereafter to go out the positive plate electrolysis and produce cathode copper.
(2) prior art: the technology type of furnace that is used for anode refining at present has fixed and two kinds of tilting-types, and fixed refining furnace is usually said open hearth, is reverberatory furnace again, and the type of furnace is a rectangular parallelepiped, fixes on the ground; Tilting furnace then is that the body of heater that will be similar to open hearth is installed on the support that can rock from side to side.The both can finish the refinery process of composition brass raw material, and its basic craft course is " a fusing-oxidation-reduction-temperature raising ".
During production various copper raw materials are arranged in pairs or groups according to a certain percentage, add in batches in the stove, combustion heat supplying makes it fusing.Behind the enough stoves of copper water of fusing, the beginning oxidation promptly blasts air in copper water, and the flux that adds capacity makes various detrimental impurity slag making, and slag is discharged.Begin reduction after oxidation finishes, promptly in copper water, blast reductive agent, with the Red copper oxide generation reduction reaction deoxidation in the copper water.In oxidation and reductive while, the temperature that progressively improves copper water makes it to reach the requirement of casting.Reduction finishes promptly to begin copper, and copper water is cast into positive plate.
The common feature of these two kinds of technology type of furnaces is: All Jobs all is to carry out according to order successively in same burner hearth, belongs to the periodic job mode, begins the operation of a next heat after stove copper water casting finishes again.Its shortcoming is: production efficiency lower (day output of single stove is mostly about in the of 100 tons, and large-scale tilting furnace can reach 300 tons); Energy consumption is than higher (heat utilization efficiency is about 20%, and ton copper unit consumption of heavy oil 80-100 kilogram, or Sweet natural gas unit consumption 100---130 mark cubic meters do not comprise the reduction energy consumption).
(3) summary of the invention: it is low that purpose of the present invention just provides a kind of energy consumption, can work continuously the composition brass regeneration casting positive plate continuous production processes that production efficiency is high.
The present invention presses process sequence with smelting furnace, oxidized still, reduction furnace, holding furnace and connects in aggregatesly, after feeding intake first, carries out following each step operation more respectively simultaneously in each corresponding burner hearth:
A, reinforced fusing adds the copper material makes into stock column to smelting furnace, and the copper material of stock column bottom flows to oxidized still after the fast instantizing under high-temperature gas, later on every 5 minutes reinforced once; The combustion of natural gas amount of smelting furnace is 470-490 mark cubic meter/time when coefficient of excess air gets 1.05, keeps micro-oxidizing atmosphere and micro-pressure operation in the stove;
B, oxidative slagging are in oxidized still, and pressurized air blasts and carries out oxidation in the copper water, and its pressure is the 0.4-0.5 MPa, and air quantity is 290-310 mark cubic meter/time, and the oxygen level of copper water is remained between the 0.45%-0.55%; Simultaneously looked composition brass content and in copper water, add quartz sand 10-20kg, slag making every 10 minutes; Irregularly skim; Keep stronger oxidizing atmosphere and pressure-fired in the stove, the copper current of oxidation advance in the reduction furnace, and the copper water temp rises to 1150 ℃;
C, reduction deoxidation drum Sweet natural gas are to reduction furnace, gas pressure 0.38-0.42 MPa, flow are 250-300 mark cubic meter/time, make oxygen level in the copper water between 0.13%-0.17%, blast air simultaneously and make and do not have the reductive combustion of natural gas, and copper water is heated to 1200 ℃; Reductive copper water enters holding furnace;
The incendiary amount of natural gas is 290-310 mark cubic meter/time in d, the storage insulation holding furnace, and air capacity is 2700-2900 mark cubic meter/time, stronger reducing atmosphere and the pressure-fired of maintenance in the stove;
E, copper are cast when copper water reaches 4/5 stove in the holding furnace, can begin the copper casting and make positive plate; When copper water in the holding furnace is left 1/10 stove, stop casting, when copper water to be flowed into reaches 4/5 stove, promptly begin the casting operation of next cycle.
The present invention changes continuous production processes into owing to will have batch production technology now, so compared with prior art have following characteristics:
1, reduced investment: by producing 100000 tons of positive plates per year, main equipment of the present invention is not by present market price about 4,500,000 (comprising the casting unit), and open hearth then will be built two of 120 tons of capacity and just can reach and produce 100000 tons per year, approximately need 5,000,000; 300 tons one of tilting furnace capacity needs 1500---and 2,000 ten thousand.Therefore minimum the saving invested more than 500,000;
2, efficient height: owing to smelting furnace, oxidized still, reduction furnace, holding furnace are dressed up the built-up type refining furnace of an integral body by process sequence, feed in raw material simultaneously respectively in the corresponding burner hearth in the built-up type refining furnace fusing, oxidative slagging, reduction deoxidation, store temperature raising insulation and copper casting, become continuous production from original batch production, a combination stove is produced about 350 tons of positive plates daily, improves 250% than existing day output;
3, energy consumption is low: because continuous production has improved heat utilization efficiency, ton copper Sweet natural gas unit consumption is only for 65-70 mark cubic meter (comprising reduction gas), than existing reduction 40-50%.
(4) description of drawings
Fig. 1 is the employed built-up type refining furnace of a technology of the present invention structural representation.
Among the figure, 1-smelting furnace, 2-oxidized still, 3-reduction furnace, 4-holding furnace, the 5-unit of casting.
(5) embodiment:
Embodiment 1
Built-up type refining furnace among the present invention as shown in fig. 1, its basic structure is smelting furnace 1, oxidized still 2, reduction furnace 3, holding furnace 4 to be connected in aggregates by process sequence, mixes full-automatic casting unit 5 again and can finish whole refinery process.After feeding intake first, in each corresponding burner hearth, carry out the operation in following each step more respectively simultaneously:
The copper material that a, reinforced fusing prepare is transported to the loading hopper of oxidized still with fork truck, and hopper rises to fire door the copper material is poured in the stove with certain surging force, forms stock column.The high-temperature furnace gas that burning is produced passes from the space of stock column, and carry out sufficient heat exchange between the copper material, the flue-gas temperature of outlet can be reduced to 250 ℃, and the copper material drops to when bottom, temperature is then near fusing point, fusing fast falls into channel as raindrop under the direct radiation of combustion flame, with copper aqueous fusion in the oxidized still molten bath, its underpart be one.The molten copper speed of smelting furnace per hour can reach the 15-20 ton, feeds in raw material once every 5 minutes, expects heavily about 1500 kilograms.In the combustion of natural gas amount 470-490 mark cubic meter/time (coefficient of excess air gets 1.05) of smelting furnace, keep micro-oxidizing atmosphere and micro-pressure operation in the stove;
B, oxidative slagging are in oxidized still, and pressurized air (pressure 0.4-0.5 MPa) blasts copper water by gas permeable brick and carries out oxidation, and air quantity is 290-310 mark cubic meter/time, and the oxygen level of copper water is remained between the 0.45%-0.55%; Simultaneously looked composition brass content and in copper water, add quartz sand (powdery) 10-20kg every 10 minutes, slag making, slag swims on the copper water surface and is stopped by siphon brick; Irregularly skim; In stove, keep stronger oxidizing atmosphere and pressure-fired.The copper water of oxidation flows to the reduction furnace from the through hole of bottom, and the copper water temp rises to 1150 ℃;
To reduction furnace, flow 250-300 marks cubic meter/time by gas permeable brick drum Sweet natural gas (pressure 0.38-0.42 MPa) for c, reduction deoxidation, makes oxygen level in the copper water between 0.13%-0.17%; Because Sweet natural gas reductive utilization ratio approximately has only 30%, major part all enters burner hearth, and therefore, the air (1500 mark cubic meter/time) that blast capacity makes does not have the reductive combustion of natural gas, and copper water is heated to 1200 ℃; Reductive copper water flows to holding furnace from the overflow port on top;
The incendiary amount of natural gas is 290-310 mark cubic meter/time in d, the storage insulation holding furnace, and air capacity is 2700-2900 mark cubic meter/time, stronger reducing atmosphere and the pressure-fired of maintenance in the stove; If the reduction of the copper water in the holding furnace is not ideal enough, or temperature is on the low side, can replenish reduction and temperature raising;
E, copper are cast when copper water reaches 4/5 stove in the holding furnace, can begin the copper casting and make positive plate; When copper water in the holding furnace is left 1/10 stove, stop casting, when copper water to be flowed into reaches 4/5 stove, promptly begin the casting operation of next cycle.
From the smelting furnace to the holding furnace, the entire job process is carried out continuously in the technology of the present invention.Need often to detect from each position sampling in operation process, check copper water temp height, whether redox is complete, so that adjust redox and burning job parameter.

Claims (1)

1. composition brass regeneration casting positive plate continuous production processes is characterized in that smelting furnace, oxidized still, reduction furnace, holding furnace are connected by process sequence in aggregates, after feeding intake first, carries out following each step operation more respectively simultaneously in each corresponding burner hearth:
A, reinforced fusing adds the copper material makes into stock column to smelting furnace, and the copper material of stock column bottom flows to oxidized still after the fast instantizing under high-temperature gas, every 5 minutes reinforced once; The combustion of natural gas amount of smelting furnace is 470-490 mark cubic meter/time when coefficient of excess air gets 1.05, keeps micro-oxidizing atmosphere and micro-pressure operation in the stove;
B, oxidative slagging are in oxidized still, and pressurized air blasts and carries out oxidation in the copper water, and its pressure is the 0.4-0.5 MPa, and air quantity is 290-310 mark cubic meter/time, and the oxygen level of copper water is remained between the 0.45%-0.55%; Simultaneously looked composition brass content and in copper water, add quartz sand 10-20kg, slag making every 10 minutes; Irregularly skim; Keep stronger oxidizing atmosphere and pressure-fired in the stove, the copper current of oxidation advance in the reduction furnace, and the copper water temp rises to 1150 ℃;
C, reduction deoxidation drum Sweet natural gas are to reduction furnace, gas pressure 0.38-0.42 MPa, flow are 250-300 mark cubic meter/time, make oxygen level in the copper water between 0.13%-0.17%, blast air simultaneously and make and do not have the reductive combustion of natural gas, and copper water is heated to 1200 ℃; Reductive copper water enters holding furnace;
The incendiary amount of natural gas is 290-310 mark cubic meter/time in d, the storage insulation holding furnace, and air capacity is 2700-2900 mark cubic meter/time, stronger reducing atmosphere and the pressure-fired of maintenance in the stove;
E, copper are cast when copper water reaches 4/5 stove in the holding furnace, can begin the copper casting and make positive plate; When copper water in the holding furnace is left 1/10 stove, stop casting, when copper water to be flowed into reaches 4/5 stove, promptly begin the casting operation of next cycle.
CN2010101562313A 2010-04-24 2010-04-24 Continuous production technology for miscellaneous copper recycling and positive plate casting Pending CN102234725A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104988316A (en) * 2015-06-16 2015-10-21 云南锡业股份有限公司 Pyrogenic process regeneration technology for high-arsenic black copper plate
CN105506304A (en) * 2015-12-17 2016-04-20 天津华北集团铜业有限公司 Process for preserving heat of copper liquid by adopting natural gas
CN105543497A (en) * 2015-12-17 2016-05-04 天津华北集团铜业有限公司 Process for smelting copper through oxygen-fuel combustion technique
CN109609769A (en) * 2018-12-28 2019-04-12 江西新金叶实业有限公司 The technique of anode plate is directly produced using oxygen-enriched air smelting furnace
CN110983067A (en) * 2019-12-31 2020-04-10 绵阳铜鑫铜业有限公司 Secondary copper refining process

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1162648A (en) * 1996-04-15 1997-10-22 邢贵生 Method and apparatus for producing oxygenless copper from coarse copper
CN1493715A (en) * 2003-09-24 2004-05-05 洛阳铜加工集团有限责任公司 Technological method of producing copper anode plate using fuel gas
CN1556231A (en) * 2003-12-30 2004-12-22 上海交通大学 Technology of producing oxygenless copper using waste red copper
CN101045963A (en) * 2006-03-31 2007-10-03 日矿金属株式会社 Dry type refining method for copper
CN101259484A (en) * 2007-03-05 2008-09-10 浙江宏天铜业有限公司 Scrap copper continuous casting and rolling low oxygen glitter copper lever production technology
CN101457300A (en) * 2009-01-14 2009-06-17 陈云门 Device and method for continuous refining waste purple impure copper
CN101654792A (en) * 2008-08-23 2010-02-24 大冶有色金属公司 Regeneration novel process adopting electrolysis residual pole pyrogenic method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1162648A (en) * 1996-04-15 1997-10-22 邢贵生 Method and apparatus for producing oxygenless copper from coarse copper
CN1493715A (en) * 2003-09-24 2004-05-05 洛阳铜加工集团有限责任公司 Technological method of producing copper anode plate using fuel gas
CN1556231A (en) * 2003-12-30 2004-12-22 上海交通大学 Technology of producing oxygenless copper using waste red copper
CN101045963A (en) * 2006-03-31 2007-10-03 日矿金属株式会社 Dry type refining method for copper
CN101259484A (en) * 2007-03-05 2008-09-10 浙江宏天铜业有限公司 Scrap copper continuous casting and rolling low oxygen glitter copper lever production technology
CN101654792A (en) * 2008-08-23 2010-02-24 大冶有色金属公司 Regeneration novel process adopting electrolysis residual pole pyrogenic method
CN101457300A (en) * 2009-01-14 2009-06-17 陈云门 Device and method for continuous refining waste purple impure copper

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104988316A (en) * 2015-06-16 2015-10-21 云南锡业股份有限公司 Pyrogenic process regeneration technology for high-arsenic black copper plate
CN105506304A (en) * 2015-12-17 2016-04-20 天津华北集团铜业有限公司 Process for preserving heat of copper liquid by adopting natural gas
CN105543497A (en) * 2015-12-17 2016-05-04 天津华北集团铜业有限公司 Process for smelting copper through oxygen-fuel combustion technique
CN109609769A (en) * 2018-12-28 2019-04-12 江西新金叶实业有限公司 The technique of anode plate is directly produced using oxygen-enriched air smelting furnace
CN109609769B (en) * 2018-12-28 2020-05-29 江西新金叶实业有限公司 Process for directly producing anode plate by adopting oxygen-enriched smelting furnace
CN110983067A (en) * 2019-12-31 2020-04-10 绵阳铜鑫铜业有限公司 Secondary copper refining process

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