CN101845556A - Shaft furnace and rotary furnace combined type fire refining process for raw red copper - Google Patents

Shaft furnace and rotary furnace combined type fire refining process for raw red copper Download PDF

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Publication number
CN101845556A
CN101845556A CN 201010200890 CN201010200890A CN101845556A CN 101845556 A CN101845556 A CN 101845556A CN 201010200890 CN201010200890 CN 201010200890 CN 201010200890 A CN201010200890 A CN 201010200890A CN 101845556 A CN101845556 A CN 101845556A
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Prior art keywords
refining
furnace
copper
rotary
shaft furnace
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CN 201010200890
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CN101845556B (en
Inventor
张选志
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Jiangxi Rare Earth and Rare Metals Tungsten Group Holding Co Ltd
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Jiangxi Rare Earth and Rare Metals Tungsten Group Holding Co Ltd
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Priority to CN2010102008902A priority Critical patent/CN101845556B/en
Publication of CN101845556A publication Critical patent/CN101845556A/en
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Publication of CN101845556B publication Critical patent/CN101845556B/en
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Abstract

The invention relates to a fire refining process for raw red copper. The process is characterized by adopting a shaft furnace, a copper water launder and at least one rotary furnace and comprising the following steps of: charging the raw material of the raw red copper into the shaft furnace by using a charging machine and smelting the raw red copper in the shaft furnace into raw red copper liquid; conveying and charging the raw red copper liquid smelted and produced from the shaft furnace into the rotary refining furnace by using the launder to perform redox refining to obtain the refined copper liquid; and allowing the refined copper liquid to directly enter a tundish through the launder to finish the subsequent procedures. According to the fire refining process, a holding furnace is saved, so the fire refining process has the advantages of high energy utilization ratio, high production continuity and good labor condition.

Description

A kind of shaft furnace and rotary kiln combined type fire refining process for raw red copper
Technical field
The present invention relates to a kind of fire refining process of purple composition brass, particularly, relate to a kind of employing shaft furnace, copper water flow grooves and at least one rotary kiln, and omit the fire refining process of the purple composition brass of holding furnace, belong to the non-ferrous metal metallurgy technical field.
Background technology
Purple composition brass is that copper content is not less than 90% copper scrap, claims useless red copper or useless fine copper again, is the maximum copper scrap kind of yield.Purple composition brass is purified through pyrorefining becomes refined matte.The higher refined matte liquid of purity is used for the continuous casting and rolling electrician with copper cash base (claiming copper bar, copper wire rod again), or other red copper base that is used to cast.The refined matte liquid that purity is not high is used to the positive plate of casting.
Present known fire refining process for raw red copper flow process can be divided into following 4 kinds:
1. fixed reverberatory refining technical process
Its main flow process is, purple composition brass → charging machine or hand-fed → fixed reverberatory furnace fusing, oxidation and reduction refining → refined matte liquid → chute → tundish, quantitative casting bag → be used for the continuous casting and rolling electrician to use the copper cash base, or other red copper base that is used to cast, or be used to the positive plate of casting.
2. tilting-type refining furnace refinery practice flow process
Its main flow process is, purple composition brass → charging machine → tilting-type refining furnace fusing, oxidation and reduction refining → refined matte liquid → chute → tundish, quantitative casting bag → be used for the continuous casting and rolling electrician to use the copper cash base, or other red copper base that is used to cast, or be used to the anode copper of casting.
3. shaft furnace-fixed reverberatory furnace is united the refinery practice flow process
Its main flow process is purple composition brass → charging machine → shaft furnace melting → purple composition brass liquid → chute → fixed reverberatory furnace redox refining → refined matte liquid → chute → tundish, quantitative casting bag → casting positive plate.
Paper " putting into practice of the molten process for copper of shaft furnace " (Yuan Fuping, " industrial furnace ", the 30th the 3rd phase of volume, in May, 2008) discloses the molten copper of a kind of shaft furnace-reverberatory refining integration of operation and has produced anode copper coin technology.This technology is advanced the copper material with shaft furnace, and is fused into copper water and offers reverberatory furnace, and reverberatory furnace is cast into the anode copper coin then with the redox of copper water.
4. shaft furnace-tilting-type refining furnace-holding furnace is united the refinery practice flow process
Paper " technology and the equipment of useless composition brass pyrorefining direct production glitter copper lever " (the newborn Lu Hong of Zhao, " resource recovery ", 2008 the 10th, 11 phases) discloses a kind of 1 shaft furnace-2 tilting furnace-1 holding furnace associating refinery practice.Its main flow process is that purple composition brass → charging machine → shaft furnace melting → purple composition brass liquid → chute → tilting-type refining furnace redox refining → refined matte liquid → chute → holding furnace fine setting copper liquid composition and temperature → refined matte liquid → chute → tundish → continuous casting and rolling electrician use the copper cash base.
There is following problem in existing pyrorefining technology: 1) fuel consumption of fixed reverberatory furnace and tilting-type refining furnace is big, thermo-efficiency low (energy utilization rate 15~40%), and labor condition is relatively poor; 2) the shaft furnace rate of utilization in the shaft furnace-fixed reverberatory furnace associating refinery practice is low, can't the serialization High-efficient Production; 3) holding furnace that is provided with in shaft furnace-tilting-type refining furnace-holding furnace associating refinery practice flow process has increased energy consumption.
Summary of the invention
The purpose of this invention is to provide a kind of energy utilization rate height, labor condition better, fire refining process for raw red copper that the production continuity is strong.
For this reason, the invention provides a kind of fire refining process of purple composition brass, it is characterized in that, adopt shaft furnace, chute and at least one rotary refining furnace, comprise the following steps: that purple composition brass raw material by the charging machine shaft furnace of packing into, is smelted into purple composition brass liquid in shaft furnace; The purple composition brass liquid of shaft furnace melting output adopts chute to carry and flows into rotary refining furnace, carries out the redox refining, to obtain refined matte liquid; And the chute of refined matte liquid through the downstream directly enter tundish, to finish subsequent handling.
Preferably, comprise at least two rotary refining furnaces.
Preferably, comprise three rotary refining furnaces.
Preferably, chute is the combination of movable chute, fixed shaft type fluid or movable chute and fixed shaft type fluid; Chute is one section, two sections or multistage.Directly connect subsequent handling behind the tundish, or connect subsequent handling by the quantitative casting bag.
Preferably, subsequent handling comprises continuous casting and rolling copper cash base or casting anode copper.
Preferably, these two rotary kilns are independently finished refinery process whole process, interlaced operation process separately.
Preferably, comprise a shaft furnace that is used for molten copper and two rotary kilns that are used for refined matte.
According to the present invention, the equipment of employing comprises 1 shaft furnace, purple composition brass spout, 1 to 3 rotary kiln, refined matte spout, tundish, but has omitted holding furnace.
According to one embodiment of present invention, shaft furnace of process using of the pyrorefining of purple composition brass and two rotary kiln associating refinery practice flow processs, smelt stage adopts shaft furnace to melt purple composition brass, and oxidation, reduction phase adopt two rotary refining furnaces with purple composition brass liquid refining becoming refined matte liquid.
Described shaft furnace is the sophisticated equipment of the solid-state copper of fusing, compares with fixed reverberatory furnace or tilting-type refining, and melting efficiency can improve 1~2 times, and thermosteresis can be decreased to 20~35%, and promptly energy utilization ratio can be up to 65~80%, and the production continuity is strong.
Described rotary refining furnace is to be in the large-scale technical process of raw material production cathode copper with ore deposit copper, and liquid blister refining is become the preferred unit of anode process for copper link, claims Rotary Anode Furnace or rotary kiln again.Compare with fixed or tilting-type reverberatory furnace, rotary refining furnace has area of dissipation little (be equivalent to reverberatory furnace about 50%), good airproof performance, thermo-efficiency height (energy utilization rate can reach 60~70%), the smoke and dust treatment difficulty is little, deslagging, put operating machine of copper level of automation height, labor condition better and the relative proven technique advantage of maximization production supporting technology.
In this embodiment of the present invention, two rotary kilns are independently finished the refinery process whole process separately, but interlaced 1/2 operation process of while.After rotary kiln is smelted and is finished, refined matte liquid directly enters tundish through chute, does not need to finely tune composition and temperature through holding furnace again, and refined matte liquid directly enters copper cash continuous-casting tandem-rolling production line or positive plate liquid filling machine, be used for continuous casting and rolling copper cash base, or be used to the positive plate of casting.
The fire refining process of purple composition brass according to the present invention has comprehensively been drawn the advantage that shaft furnace melts solid-state copper technology advantage and the liquid copper technology of rotary kiln refining.
The step of the fire refining process of purple composition brass according to another preferred embodiment is as follows:
1. the purple composition brass furnace charge of pre-treatment is removed inclusion as far as possible.
2. pack into the charging machine of truck formula or other form of furnace charge, add shaft furnace thereupon.
3. shaft furnace melting batch, the purple composition brass liquid of output.
4. chute is carried purple composition brass liquid, successively flows into two rotary kilns.
5. two rotary kilns are independently finished the refinery process whole process separately, but interlaced 1/2 operation process of while.Be in and access copper liquid when one, when oxidation, deslagging and reduction refining operation process, another is in the outlet temperature of control copper liquid and composition, copper operation process.When being about to out copper liquid for one, another begins copper, steadily alternately, keeps the flow of inflow refined matte spout basicly stable.
6. the refined matte liquid inflow activity chute of rotary kiln output flows into fixedly chute again, finally flows into tundish, is used for the continuous casting and rolling electrician and uses the copper cash base, or be used to the positive plate of casting.
Beneficial effect according to fire refining process for raw red copper of the present invention is:
1. adopt the method for shaft furnace melting, significantly improved the melting efficiency (improving 1~2 times) and the energy utilization rate (improving 20~30 percentage points) of purple composition brass pyrorefining;
2. adopt the method for the purple composition brass of rotary kiln refining, the operation labor condition of having improved deslagging, having put copper;
3. a shaft furnace and two rotary kilns are united in the refinery practice, and two interlaced 1/2 refinery process processes of rotary kiln while help accessing continuously shaft furnace copper liquid, and output refined matte liquid has guaranteed the continuity of producing continuously;
4. adopt fire refining process of the present invention, helping improving with purple composition brass is maximization, mechanize and the automatic technology level of main material production copper cash base or positive plate.
Description of drawings
Fig. 1 is according to fire refining process for raw red copper schema of the present invention.
Embodiment
Referring to accompanying drawing, the specific implementation method of technical solution of the present invention is as follows:
Among Fig. 1, pretreated purple composition brass raw material, the charging machine of pack into truck formula or other form adds shaft furnace thereupon; The shaft furnace melting batch, the purple composition brass liquid of output; Adopt chute to carry purple composition brass liquid, successively flow into two rotary kilns, two rotary kilns are independently finished the refinery process whole process separately, but interlaced 1/2 operation process of while keeps the flow of inflow refined matte spout basicly stable; The refined matte liquid inflow activity chute of rotary kiln output, the tundish of finally flowing through enters copper cash continuous casting and rolling production line or positive plate liquid filling machine, is used for continuous casting and rolling copper cash base or casting positive plate.
Embodiment
With purple composition brass is the pyrorefining that raw material is produced 220000 tons of engineerings of copper cash base per year, and chute is carried purple composition brass liquid mode, and process flow steps is as follows:
1. the purple composition brass raw material of pre-treatment is removed inclusion as far as possible, and processing length or lumpiness should be fit to the truck of packing into.
2. with fork truck the purple composition brass raw material truck formula charging machine of packing into.
3. truck formula charging machine adds production capacity 35t/h shaft furnace to purple composition brass furnace charge.
4. production capacity 35t/h shaft furnace melting batch, the purple composition brass liquid of output moves chute by two cover tops continuously, is taken up in order of priority and introduces two capacity 300t rotary kilns.
5. purple composition brass liquid is introduced first rotary kiln earlier, flow into about 200t after, enter oxidation operation.After flowing into 300t, enter later stage oxidation, deslagging, reduction, controlled temperature and composition refinery process, get final product copper after finishing.
When being about to copper after 6. first rotary kiln refinery process finished, second rotary kiln begins to enter and accesses copper liquid, refinery process and copper whole process.Two nominal capacity 300t rotary kilns are independently finished separately and are accessed copper liquid, oxidation, deslagging, reduction, controlled temperature and composition, copper operation whole process, but interlaced 1/2 operation process of while.When being about to out copper liquid for one, another begins copper, steadily alternately, keeps the flow of refined matte spout basicly stable.
7. the refined matte liquid of rotary kiln output is introduced fixedly chute by movable chute.
8. refined matte liquid is gone into tundish from the fixed flow concentrated flow.
9. refined matte liquid injects the continuous caster of production capacity 35t/h continuous casting and rolling production line from tundish, through continuous billet casting, roll bar, output copper cash base.
The present invention determines the rotary kiln nominal capacity by following formula:
Rotary kiln nominal capacity (t)=shaft furnace production capacity (t/h) * separate unit rotary kiln is finished and is accessed copper liquid and redox time (h)
Some specific embodiments of the present invention are more than disclosed, those skilled in the art can according to thought of the present invention carry out various improvement, perfect, replace and/or change, for example, the chute form can be movable and fixed two types combination, also can be wherein a kind of; Chute can be a multistage, also can be one section.Yet, do like this, all be included within the protection domain of claims.

Claims (8)

1. the fire refining process of a purple composition brass is characterized in that, adopts shaft furnace, copper water flow grooves and at least one rotary refining furnace, comprises the following steps:
Purple composition brass raw material is smelted into purple composition brass liquid by the charging machine shaft furnace of packing in shaft furnace;
The purple composition brass liquid of shaft furnace melting output adopts chute to carry and flows into rotary refining furnace, carries out the redox refining, to obtain refined matte liquid; And
Refined matte liquid directly enters tundish through the chute in downstream, to finish subsequent handling.
2. fire refining process as claimed in claim 1 is characterized in that, comprises at least two rotary refining furnaces.
3. fire refining process as claimed in claim 1 is characterized in that, comprises three rotary refining furnaces.
4. fire refining process as claimed in claim 1 is characterized in that, the chute form can be movable and fixed two types combination, also can be wherein a kind of; Chute can be a multistage, also can be one section.
5. fire refining process as claimed in claim 1 is characterized in that, can directly connect subsequent handling behind the tundish, also can connect subsequent handling by the quantitative casting bag.
6. fire refining process as claimed in claim 1 is characterized in that, subsequent handling comprises continuous casting and rolling copper cash base or casting positive plate.
7. fire refining process as claimed in claim 2 is characterized in that, comprises two rotary refining furnaces, and these two rotary refining furnaces are independently finished refinery process whole process, interlaced operation process separately.
8. fire refining process as claimed in claim 1 is characterized in that, comprises a shaft furnace that is used for molten copper and two rotary refining furnaces that are used for refined matte.
CN2010102008902A 2010-06-10 2010-06-10 Shaft furnace and rotary furnace combined type fire refining process for raw red copper Expired - Fee Related CN101845556B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012159567A1 (en) * 2011-05-24 2012-11-29 江西稀有稀土金属钨业集团有限公司 Combined furnace system for fire refining red impure copper
CN104611574A (en) * 2015-02-15 2015-05-13 池州冠华黄金冶炼有限公司 Method for refining scrap copper
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
CN108998680A (en) * 2018-08-03 2018-12-14 湖南金龙国际铜业有限公司 The technique for directly preparing oxygen-free copper using useless recycled copper

Citations (1)

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Publication number Priority date Publication date Assignee Title
CN1952189A (en) * 2006-09-08 2007-04-25 云南铜业股份有限公司 Rotary type anode furnace process technology for refining fuel coal by copper matte smelting process

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CN1952189A (en) * 2006-09-08 2007-04-25 云南铜业股份有限公司 Rotary type anode furnace process technology for refining fuel coal by copper matte smelting process

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012159567A1 (en) * 2011-05-24 2012-11-29 江西稀有稀土金属钨业集团有限公司 Combined furnace system for fire refining red impure copper
US9464845B2 (en) 2011-05-24 2016-10-11 Jiangxi Rare Earth And Rare Metals Tungsten Group Corporation Combined furnace system for fire refining red impure copper
CN104611574A (en) * 2015-02-15 2015-05-13 池州冠华黄金冶炼有限公司 Method for refining scrap copper
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
CN108998680A (en) * 2018-08-03 2018-12-14 湖南金龙国际铜业有限公司 The technique for directly preparing oxygen-free copper using useless recycled copper

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