CN106086453A - The method reducing copper anode mud Kaldo Furnace processing procedure smelting slag gold silver content - Google Patents
The method reducing copper anode mud Kaldo Furnace processing procedure smelting slag gold silver content Download PDFInfo
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- CN106086453A CN106086453A CN201610684084.4A CN201610684084A CN106086453A CN 106086453 A CN106086453 A CN 106086453A CN 201610684084 A CN201610684084 A CN 201610684084A CN 106086453 A CN106086453 A CN 106086453A
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- selenium
- tellurium
- slag
- kaldo furnace
- mud
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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
- C22B11/00—Obtaining noble metals
- C22B11/04—Obtaining noble metals by wet processes
- C22B11/042—Recovery of noble metals from waste materials
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B19/00—Selenium; Tellurium; Compounds thereof
- C01B19/02—Elemental selenium or tellurium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a kind of method reducing copper anode mud Kaldo Furnace processing procedure smelting slag gold silver content, it is applicable to the open circuit of copper anode mud Kaldo Furnace processing procedure particularly intermediate material selenium, tellurium, the means of stove inventory are returned by minimizing selenium-rich, rich tellurium, realize reducing smelting slag gold silver content, its operating procedure is refining slag to be first crushed to 200 mesh content more than after 80%, uses leaching with sodium hydroxide tellurium in the lump with venturi mud；Leachate using sulphuric acid be acidified to pH to 5.5 ~ 6 again, obtains selling outside tellurium dioxide, after precipitation, liquid returns Kaldo Furnace venturi scrubbing system as washing liquid；Finally with silver selenium slag, secondary thick selenium sulphation in the lump, leached mud being steamed selenium, gained steams selenium slag and returns Kaldo Furnace, and selenium flue dust introduces Kaldo Furnace venturi scrubbing system and carries selenium.The present invention reduces smelting slag gold silver content while being effectively improved the direct yield of whole process gold, silver, selenium, tellurium, thus improves Kaldo Furnace working performance and work efficiency, and reduces the energy resource consumption that returning charge causes.
Description
Technical field
The present invention relates to precious metals metallurgy method, reduce copper anode mud Kaldo Furnace processing procedure melting particularly to one
The method of slag gold silver content.
Background technology
At present, the Kaldo Furnace melting of domestic and international commonly used advanced person processes copper anode mud and extracts gold, silver technique, this technique
Although it is strong to have adaptability to raw materials, working performance is high, advantages of environment protection, but this technique also has the disadvantage that one is
Smelting slag gold silver content is high, and gold, silver content respectively may be about 200 ~ 300g/t and 7 ~ 10kg/t, smelting slag return copper metallurgy industry or
Individual processing, causes gold, silver direct yield low；Two is that to return stove intermediate material kind many, mainly include refining slag, venturi mud, two
Secondary thick selenium, silver selenium slag, all return stove and process, cause Kaldo Furnace inefficiency, energy consumption to increase, process 2000t copper anode with year
As a example by mud Kaldo Furnace, produce refining slag about 100t, about 200 tons of venturi mud, about 8 tons of the thick selenium of secondary, silver selenium slag about 3 tons per year；Three
It is that intermediate material Returning smelting process can cause the dissipated metal such as selenium, tellurium to lose with smelting slag, reduces selenium, tellurium direct yield.
The present inventor is summed up by production practices and shows that in smelting slag, gold, silver content increases with selenium, tellurium content and increases, with
Time mineralogical analysis show in smelting slag that gold silver mainly exists with AgSeTe, AgSeAuTe alloy form, illustrate fusion process selenium,
The existence of tellurium is to cause gold, silver to be difficult to main cause smelting slag gold, silver content being raised completely into precious metals containing lead.Therefore, fall
Low enter stove material selenium, tellurium amount can effectively reduce gold, silver content in smelting slag.
In the middle of Kaldo Furnace fusion process, returning charge refining slag, venturi mud, the thick selenium of secondary, silver selenium slag etc. are high selenium, tellurium
Content material, its approximate composition is: refining slag Se2%, Te20%, Pb5%, Bi1%, Au0.2%, Ag5%；Venturi mud Se47%,
Te8%、Pb20%、Bi3%、Au0.02%、Ag4%；Secondary thick selenium Se85%, Te2%, Pb3%, Bi1%, Ag0.02%；Silver selenium slag
Se20%、Te1%、Au0.01%、Ag75%.Such intermediate material returns stove and certainly will cause furnace charge selenium, tellurium content abruptly increase, if returning stokehold
Wherein selenium, tellurium open circuit will on the one hand be conducive to gold, silver content in smelting slag to reduce, improve gold silver direct yield；On the other hand can be rich
Collection intermediate material gold silver, reduces material treating capacity, reduces energy consumption, it is achieved selenium, tellurium short route reclaim.
About the process of Kaldo Furnace process intermediate material, Zhang Yuan waits (ZL201110319475.3) to use at wet processing
Reason refining slag carries tellurium, reduces and returns stove inventory, improves Kaldo Furnace production efficiency, but and not mentioned stove selenium, the tellurium amount returned is to slag
Gold silver content and the impact of gold silver direct yield in slag.Based on open circuit Kaldo Furnace intermediate material selenium, tellurium, thus reduce Kaldo Furnace
The not disclosed report of method of slag gold silver content.
Summary of the invention
It is an object of the invention to provide a kind of side reducing copper anode mud Kaldo Furnace processing procedure smelting slag gold silver content
Method, it is achieved reducing while smelting slag gold silver content, improves Kaldo Furnace working performance, and with copper anode mud Kaldo Furnace at
Science and engineering skill is tightly combined, workable, is effectively improved the direct yield of whole process gold, silver, selenium, tellurium.
For realizing object above, the present invention reduces the method for copper anode mud Kaldo Furnace processing procedure smelting slag gold silver content
Using minimizing selenium-rich, rich tellurium to return the means of stove inventory, operating procedure and technological parameter are as follows:
1. refining slag being crushed to-200 mesh content more than after 80%, leach tellurium in the lump with venturi mud, leaching condition is: hydrogen-oxygen
Changing na concn 50 ~ 150g/L, liquid-solid ratio by volume mass ratio L/Kg is 4 ~ 7:1, extraction temperature 50 ~ 90 DEG C, extraction time 0.5 ~
3h；
2. using sulphuric acid to be acidified to pH to 5.5 ~ 6 step leachate 1., obtain selling outside tellurium dioxide, after precipitation, liquid is as washing
Liquid returns Kaldo Furnace venturi scrubbing system；
3. with silver selenium slag, secondary thick selenium sulphation in the lump, step leached mud 1. being steamed selenium, sulphation is steamed selenium condition and is: temperature
500 ~ 550 DEG C, 1 ~ 1.2 times of theoretical amount of sulfuric acid dosage；
4. step 3. gained being steamed selenium slag and return Kaldo Furnace, selenium flue dust introduces Kaldo Furnace venturi scrubbing system and carries selenium.
The present invention reduces the method for copper anode mud Kaldo Furnace processing procedure smelting slag gold silver content, by reduce selenium-rich,
Rich tellurium returns stove inventory, reduces gold silver content in copper anode mud Kaldo Furnace processing procedure smelting slag, has following useful
Effect:
1. single batch returns stove each material selenium, tellurium open circuit rate reaches more than 90%, effectively reduces melting while improving selenium, tellurium direct yield
Gold, silver content in slag；
2. single batch returns stove inventory reduction by more than 40%, reduces the energy that returning charge causes while improving Kaldo Furnace work efficiency
Source consumes.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is reduced copper anode mud Kaldo Furnace processing procedure smelting slag gold silver to contain
The method of amount is described in further detail.
The present invention reduces the method for copper anode mud Kaldo Furnace processing procedure smelting slag gold silver content and is applicable to copper anode mud
Kaldo Furnace processes technical process, is particularly suited for process intermediate material selenium, the open circuit of tellurium and provides one fall on this basis
The method of low smelting slag gold silver content.Concrete operation step and technological parameter be:
Refining slag is crushed to-200 mesh content more than after 80%, with venturi mud in the lump at naoh concentration 50 ~ 150g/L solution
Middle leaching tellurium, liquid-solid ratio by volume mass ratio L/Kg is 4 ~ 7:1, extraction temperature 50 ~ 90 DEG C, extraction time 0.5 ~ 3h；To leach
Liquid uses sulphuric acid to be acidified to pH to 5.5 ~ 6, obtains selling outside tellurium dioxide, and after precipitation, liquid returns Kaldo Furnace venturi as washing liquid and washes
Wash system；Leaching tellurium slag is pressed 1 ~ 1.2 times of theoretical amount of sulfuric acid dosage in the lump with silver selenium slag, the thick selenium of secondary at temperature 500 ~ 550 DEG C
Steaming selenium, steam selenium slag and return Kaldo Furnace extraction gold, silver, selenium flue dust introduces Kaldo Furnace venturi scrubbing system and carries selenium.
Embodiment 1
By being mainly composed of selenium 1.52%, tellurium 22.5%, lead 6.3%, gold 0.16%, the refining slag of silver 6.2% are crushed to-200 mesh and are
After 83%, be mainly composed of selenium 45.2%, tellurium 4.9%, lead 21%, gold 0.03%, silver 4.3% venturi mud leach tellurium in the lump, leaching
Going out condition is: naoh concentration 60g/L, and liquid-solid ratio by volume mass ratio L/Kg is 7:1, extraction temperature 80 DEG C, extraction time
1h, tellurium leaching rate reaches 89.5%, slag rate 72%；Leachate using sulphuric acid be acidified to pH to 5.5, obtains tellurium dioxide, tellurium sinks
Shallow lake rate reaches 98.3%, and after heavy tellurium, liquid returns Kaldo Furnace venturi scrubbing system as washing liquid；By leached mud and secondary thick selenium sulfur in the lump
Selenium is steamed in acidifying, and sulphation is steamed selenium condition and is: temperature 500 DEG C, and sulfuric acid dosage uses 1 times of theoretical amount, and selenium evaporation rate reaches 90%.
This embodiment whole process selenium, tellurium open circuit rate are respectively 91.5%, 90.2%, return stove material selenium, tellurium content respectively
7.47%, 5.35%, return furnace volume for processing intermedium doses 63%.According to production status, enter stove selenium, tellurium grade respectively by 13.1%,
2.8% is reduced to 8.9%, 1.5%, and smelting slag gold, silver content is reduced to 130g/t, 5.2kg/t.
Embodiment 2
By being mainly composed of selenium 3.3%, tellurium 25.4%, lead 6.1%, gold 0.13%, to be crushed to-200 mesh be 86% to the refining slag of silver 5.2%
After, be mainly composed of selenium 43.2%, tellurium 9.6%, lead 19% venturi mud in the lump naoh concentration 70g/L, liquid-solid ratio by
Volume mass is 5:1 than L/Kg, leach tellurium under the leaching condition of extraction temperature 70 DEG C, extraction time 1.5h, and tellurium leaching rate reaches
91.3%, slag rate 69%；Leachate using sulphuric acid be acidified to pH to 5.5, obtains tellurium dioxide, tellurium rate of deposition reaches 99%, by heavy tellurium
Rear liquid returns Kaldo Furnace venturi scrubbing system as washing liquid；Leached mud is steamed selenium, sulphation with secondary thick selenium sulphation in the lump
Steaming selenium condition is: temperature 520 DEG C, and sulfuric acid dosage presses 1.1 times of theoretical amount, and selenium evaporation rate reaches 93%.
The present embodiment whole process selenium, tellurium open circuit rate are respectively 95.5%, 92.2%, return stove material selenium, tellurium content respectively
7.38%, 5.35%, return furnace volume for processing intermedium doses 59%.According to production status, enter stove selenium, tellurium grade respectively by 12.8%,
3.1% is reduced to 8.7%, 1.45%, and smelting slag gold, silver content is reduced to 108g/t, 4.6kg/t.
Embodiment 3
By being mainly composed of selenium 3.5%, tellurium 25.7%, lead 5.9%, gold 0.14%, to be crushed to-200 mesh be 85% to the refining slag of silver 5.2%
After, be mainly composed of selenium 49.3%, tellurium 5.5%, lead 22.5%, gold 0.014%, silver 4.5% venturi mud leach tellurium in the lump, leaching
Going out condition is: naoh concentration 80g/L, liquid-solid ratio by volume mass ratio L/Kg is 5:1, extraction temperature 80 DEG C, extraction time
1.5h, tellurium leaching rate reaches 92.1%, slag rate 69.9%；Leachate uses sulphuric acid be acidified to pH to 5.5, obtains tellurium dioxide,
Tellurium rate of deposition reaches 99.2%, and after heavy tellurium, liquid returns Kaldo Furnace venturi scrubbing system as washing liquid；By leached mud and the thick selenium of secondary one
And sulphation steaming selenium, sulphation steaming selenium condition is: temperature 520 DEG C, and sulfuric acid dosage presses 1.2 times of theoretical amount, and selenium evaporation rate reaches
93.9%。
This embodiment whole process selenium, tellurium open circuit rate are respectively 94.6%, 95.2%, return stove material selenium, tellurium content respectively
7.67%, 4.58%, return furnace volume for processing intermedium doses 61%.According to production status, enter stove selenium, tellurium grade respectively by 13.5%,
2.92% is reduced to 8.37%, 1.61%, and smelting slag gold, silver content is reduced to 128g/t, 4.35kg/t.
Embodiment 4
By being mainly composed of selenium 1.39%, tellurium 18.5%, lead 5.3%, gold 0.31%, the refining slag of silver 5.9% are crushed to-200 mesh and are
After 91%, be mainly composed of selenium 38.7%, tellurium 3.9%, lead 25%, gold 0.018%, silver 6.85% venturi mud leach tellurium in the lump,
Leaching condition is: naoh concentration 100g/L, liquid-solid ratio by volume mass ratio L/Kg is 7:1, extraction temperature 80 DEG C, leach time
Between 3, tellurium leaching rate reaches 95.2%, slag rate 74.3%；Leachate uses sulphuric acid be acidified to pH to 5.5, obtains tellurium dioxide, tellurium
Rate of deposition reaches 98.9%, and after heavy tellurium, liquid returns Kaldo Furnace venturi scrubbing system as washing liquid；By leached mud with the thick selenium of secondary in the lump
Sulphation steams selenium, and sulphation is steamed selenium condition and is: temperature 550 DEG C, and sulfuric acid dosage presses 1.2 times of theoretical amount, and selenium evaporation rate reaches 93.9%.
This embodiment whole process selenium, tellurium open circuit rate are respectively 94.1%, 97.2%, return stove material selenium, tellurium content respectively
6.89%, 4.32%, return furnace volume for processing intermedium doses 75%.According to production status, enter stove selenium, tellurium grade respectively by 12.9%,
2.7% is reduced to 7.9%, 1.2%, and smelting slag gold, silver content is reduced to 75g/t, 3.5kg/t.
The treatment effect contrast of above four embodiments is shown in Table 1, and the index parameter of embodiment 4 is optimal as seen from Table 1, for
Good embodiment.
Table 1 each embodiment Contrast on effect table
It should be noted that, the application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, do not taking off
On the premise of the principle of the invention, it is also possible to improved according to the above description or modify, all these improvement or modification are all answered
Fall in the protection domain of the claims in the present invention.
Claims (1)
1. the method reducing copper anode mud Kaldo Furnace processing procedure smelting slag gold silver content, is characterized in that: it uses and subtracts
Few selenium-rich, rich tellurium return the means of stove inventory, and operating procedure and technological parameter are as follows:
1. refining slag being crushed to-200 mesh content more than after 80%, leach tellurium in the lump with venturi mud, leaching condition is: hydrogen-oxygen
Changing na concn 50 ~ 150g/L, liquid-solid ratio by volume mass ratio L/Kg is 4 ~ 7:1, extraction temperature 50 ~ 90 DEG C, extraction time 0.5 ~
3h；
2. using sulphuric acid to be acidified to pH to 5.5 ~ 6 step leachate 1., obtain selling outside tellurium dioxide, after precipitation, liquid is as washing
Liquid returns Kaldo Furnace venturi scrubbing system；
3. with silver selenium slag, secondary thick selenium sulphation in the lump, step leached mud 1. being steamed selenium, sulphation is steamed selenium condition and is: temperature
500 ~ 550 DEG C, 1 ~ 1.2 times of theoretical amount of sulfuric acid dosage；
4. step 3. gained being steamed selenium slag and return Kaldo Furnace, selenium flue dust introduces Kaldo Furnace venturi scrubbing system and carries selenium.
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Cited By (3)
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| CN107419110A (en) * | 2017-08-10 | 2017-12-01 | 阳谷祥光铜业有限公司 | Tellurium, antimony, selenium, Jin Heyin technique are reclaimed in a kind of venturi mud |
| CN114350960A (en) * | 2021-12-28 | 2022-04-15 | 山东恒邦冶炼股份有限公司 | Method for separating tellurium from soot generated in blowing process of silver-separating furnace |
| CN114807623A (en) * | 2022-03-10 | 2022-07-29 | 金川集团股份有限公司 | Method for removing tellurium from copper anode mud leaching slag |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107419110A (en) * | 2017-08-10 | 2017-12-01 | 阳谷祥光铜业有限公司 | Tellurium, antimony, selenium, Jin Heyin technique are reclaimed in a kind of venturi mud |
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| CN114807623A (en) * | 2022-03-10 | 2022-07-29 | 金川集团股份有限公司 | Method for removing tellurium from copper anode mud leaching slag |
| CN114807623B (en) * | 2022-03-10 | 2023-09-22 | 金川集团股份有限公司 | Method for removing tellurium from copper anode slime leaching residues |
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