CN106282601B - Quick Oxidation, the method for removal of impurities in a kind of regeneration copper refining - Google Patents
Quick Oxidation, the method for removal of impurities in a kind of regeneration copper refining Download PDFInfo
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- CN106282601B CN106282601B CN201610854543.9A CN201610854543A CN106282601B CN 106282601 B CN106282601 B CN 106282601B CN 201610854543 A CN201610854543 A CN 201610854543A CN 106282601 B CN106282601 B CN 106282601B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/006—Pyrometallurgy working up of molten copper, e.g. refining
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Abstract
Quick Oxidation in copper refining, the method to clean are regenerated the invention discloses a kind of; belong to reclaimed copper refining techniques field; cease fire after copper liquid is heated to 1,095 1105 DEG C, then to copper liquid beat oxygen to continuing 10~30 minutes after 5600PPM, and rapidly remove the scum silica frost of generation；Copper liquid is heated to continue to beat after 1,190 1200 DEG C oxygen to saturation again, high-melting-point impurity is rejected and carries out subsequent operation；Method using the present invention, has the advantages that removal of impurities is thorough, energy saving, shortens activity time, and compared with conventional method, method of the invention improves more than 6% for an impurities removing efficiency of pb, and more than 8.7% is improved for an impurities removing efficiency of Sn；Energy consumption is reduced, and activity time shortens more than 85%.
Description
Technical field
The present invention relates to reclaimed copper refining techniques field, more particularly to a kind of regenerate Quick Oxidation in copper refining, removal of impurities
Method.
Background technology
At present, during regeneration copper refining production low-oxygen copper pole, continuous heating is needed in during oxidation, maintains copper water temperature
Between 1150~1170 DEG C of degree, carry out beating oxygen process, to realize the purpose of oxidation, removal of impurities.Traditional this oxidation, removal of impurities side
Formula, be not thorough there are removal of impurities, high energy consumption, long process the shortcomings of, usual impurities still significantly surpass after traditional approach once cleans
Mark.In order to reject impurity, it will continue to heat up in process, aoxidize, continuously repeat this process.This process is often repeated once through measuring and calculating
Energy consumption can increase by 200 cubes of natural gas, 400 cubes of liquid oxygen, and the copper purity of final products and resistance are physico because running counter to impurity
Learn property it is not up to standard, single stove except the impurity time most it is long up to 72 it is small when, force and have to make the Light absorbing impurty of raw material
Limitation, the i.e. purity requirement to raw material are higher.
The content of the invention
The purpose of the present invention is that Quick Oxidation, the method for removal of impurities in a kind of regeneration copper refining that provide, above-mentioned to solve
Problem.
To achieve these goals, the technical solution adopted by the present invention is such：Quick oxygen in one kind regeneration copper refining
Change, the method for removal of impurities, cease fire after copper liquid is heated to 1095-1105 DEG C, then copper liquid is carried out beating oxygen and continue to after 5600PPM
10~30 minutes, and rapidly remove the scum silica frost of generation；Continue to beat oxygen after copper liquid is heated to 1190-1200 DEG C again to saturation, pick
Except high-melting-point impurity carries out subsequent operation.
As preferable technical solution：Copper liquid is ceased fire after being heated to 1100 DEG C.
As preferable technical solution：Copper liquid is heated to continue to beat after 1200 DEG C oxygen to saturation again.
Present inventor is by many experiments, and the copper based on Fig. 1-oxygen phasor, finds：Oxygen solubility in copper liquid
It is related with temperature and proportional in both 1100~1200 DEG C of sections.In conventional processes, during oxidation continuous heating, dimension
Between holding 1150~1170 DEG C of copper water temperature, carry out beating oxygen process, during a certain temperature, oxygen solubility in copper liquid is fixed,
When continuing to be passed through oxygen into copper liquid, meeting accelerating impurity degree of oxidation and speed can't excessively increase copper liquid oxygen content；
For oxidizing temperature and oxygen amount is beaten, is come definite, oxidizing temperature and impurity according to the physical property of impurities
Solubility is directly proportional in copper liquid, and the oxidation of impurity mainly carries out oxygen transmission, therefore impurity content in raw material by copper liquid
Oxidizing temperature needed for bigger is also higher；The probability that oxygen amount directly affects oxidation of impurities is beaten, therefore the impurity content rejected is also with beating
Oxygen amount is proportional；
In addition, different slag formers and dosage are added according to the chemical property of impurity.
The application ceases fire after copper liquid preferably is heated to 1100 DEG C, then copper liquid is carried out beating oxygen and continues to after 5600PPM
A period of time simultaneously takes rapidly the scum silica frost of generation off, because during by 1100 DEG C knowable in upper figure, oxygen saturation is in copper liquid
5600PPM；It is preferred that being heated to continue to beat after 1200 DEG C oxygen to saturation by copper liquid again, because after temperature is more than 1200 DEG C, do not reject
Impurity metal oxide to the greatest extent can produce decomposition, be changed into simple substance again, then carry out subsequent operation.
After tested, more than 92.7% Sn can be removed using single process after the method for the present invention, rejects more than 91.4%
Pb, single stove cycle time to 8 it is small when it is interior.
Compared with prior art, the advantage of the invention is that：Method using the present invention, has thorough, the energy saving, contracting that cleans
The advantages that short activity time, compared with conventional method, the impurities removing efficiency raising more than 6% of method of the invention for pb is right
More than 8.7% is improved in an impurities removing efficiency of Sn；Energy consumption is reduced, and activity time shortens more than 85%.
Brief description of the drawings
Fig. 1 is copper-oxygen phasor.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1：A kind of to regenerate Quick Oxidation in copper refining, the method for removal of impurities according to Fig. 1, impurity contains in composition brass to be removed
Amount：Pb (lead):901ppm, Sn (tin):636ppm, ceases fire after copper liquid is heated to 1095 DEG C, and then copper liquid is carried out to beat oxygen extremely
15min after 5600PPM, and rapidly remove the scum silica frost of generation；Copper liquid is heated to continue to beat after 1190 DEG C oxygen to saturation again, is rejected
High-melting-point impurity carries out subsequent operation.
Using the method for the present embodiment, after once cleaning, impurity content in copper liquid：Pb:65ppm, Sn:55ppm, it is not necessary to
Additional energy；Activity time is up to 8h.
And conventional method is used, and after once cleaning, impurity content in copper liquid：Pb:120ppm, Sn:110ppm, it is of the invention
Method improves more than 6% for an impurities removing efficiency of pb, and more than 8.7% is improved for an impurities removing efficiency of Sn；Energy consumption is reduced, and
And activity time shortens more than 85%, specific contrast is shown in Table 1
1 traditional handicraft of table and the method for embodiment 1 contrast
Embodiment 2：【Whether the example of an other impurities content can be compiled, using other oxidizing temperatures】
Quick Oxidation in a kind of regeneration copper refining, the method for removal of impurities, impurity content in composition brass to be removed：Pb (lead):856ppm,
Sn (tin):533ppm, ceases fire after copper liquid is heated to 1100 DEG C, then to copper liquid beat oxygen to 15min after 5600PPM, and
Rapidly remove the scum silica frost of generation；Copper liquid is heated to continue after 1200 DEG C to beat oxygen to saturation again, is rejected after high-melting-point impurity carries out
Continuous operation, contrast are shown in Table 2.
2 traditional handicraft of table and the method for embodiment 2 contrast
Using the method for the present embodiment, after once cleaning, impurity content in copper liquid：Pb:63.5ppm Sn:46.2ppm no
Need additional energy；Activity time is up to 8h.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (3)
1. a kind of regenerate Quick Oxidation in copper refining, the method for removal of impurities, it is characterised in that：Copper liquid is heated to 1095-1105 DEG C
After cease fire, then to copper liquid beat oxygen to continuing 10~30 minutes after 5600PPM, and rapidly remove the scum silica frost of generation；Again will
Copper liquid continues to beat oxygen to saturation after being heated to 1190-1200 DEG C, reject high-melting-point impurity and carry out subsequent operation.
2. Quick Oxidation, the method for removal of impurities in a kind of regeneration copper refining according to claim 1, it is characterised in that：Copper liquid
Cease fire after being heated to 1100 DEG C.
3. Quick Oxidation, the method for removal of impurities in a kind of regeneration copper refining according to claim 1, it is characterised in that：Again will
Copper liquid continues to beat oxygen to saturation after being heated to 1200 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610854543.9A CN106282601B (en) | 2016-09-27 | 2016-09-27 | Quick Oxidation, the method for removal of impurities in a kind of regeneration copper refining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610854543.9A CN106282601B (en) | 2016-09-27 | 2016-09-27 | Quick Oxidation, the method for removal of impurities in a kind of regeneration copper refining |
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| Publication Number | Publication Date |
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| CN106282601A CN106282601A (en) | 2017-01-04 |
| CN106282601B true CN106282601B (en) | 2018-05-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4483586B2 (en) * | 2005-01-07 | 2010-06-16 | 三菱マテリアル株式会社 | Method of smelting copper sulfide concentrate |
| CN101344357A (en) * | 2008-08-25 | 2009-01-14 | 中国瑞林工程技术有限公司 | Rotary kiln and technique for processing composition brass or block shaped raw copper |
| CN103114208B (en) * | 2013-03-12 | 2014-11-05 | 绵阳铜鑫铜业有限公司 | Method for producing oxygen-free copper rod from secondary copper |
| CN103725897B (en) * | 2013-12-27 | 2016-03-30 | 中南大学 | A kind of method of copper scap pyrogenic process continuous refining direct production high-purity oxygen-free copper |
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