CN107557588A - The smelting process of lead, bismuth and noble metal is reclaimed in a kind of leaded tailing from relieving haperacidity - Google Patents
The smelting process of lead, bismuth and noble metal is reclaimed in a kind of leaded tailing from relieving haperacidity Download PDFInfo
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- CN107557588A CN107557588A CN201710996095.0A CN201710996095A CN107557588A CN 107557588 A CN107557588 A CN 107557588A CN 201710996095 A CN201710996095 A CN 201710996095A CN 107557588 A CN107557588 A CN 107557588A
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- bismuth
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- tailing
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- 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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The invention discloses one kind lead is reclaimed from the leaded tailing of relieving haperacidity, the smelting process of bismuth and noble metal, this method is that smelting slag is separated to the leaded tailing of acid-making process output after high temperature reduction melting processing, the high metal of output, again after technique is evaporated in vacuo, obtain lead bismuth alloy and rich silver alloy, the lead bismuth alloy wherein obtained has reached the lead of lead bismuth product, bi content requirement, reduce refining removal of impurities process, decrease lead simultaneously, the loss of bismuth, therefore, the method of the present invention reduces production cost, improve the rate of recovery of valuable metal, shorten lead, bismuth return period, improve lead, bismuth recovery value, the product quality of production is high.Meanwhile the present invention can all realize the multi-cycle separation of metal, the comprehensive recovery of metal is high, and does not produce waste residue, flue dust, waste gas etc., is advantageous to raw material value and fully realizes, green.In addition, the method for the present invention is strong to adaptability to raw material, technique easily adjusts, and production process is easy to control.
Description
Technical field
The invention belongs to non-ferrous metallurgy technology field, and in particular to one kind reclaims lead, bismuth from the leaded tailing of relieving haperacidity
And the smelting process of noble metal.
Background technology
During copper pyrometallurgy, volume of smoke is produced, these flue dust are including volatile substances such as lead, bismuth, zinc, arsenic and carefully
Small dust.By bag collection, most of flue dust is collected, and returns to feed proportioning system melting again, the flue dust of receipts at large
Deposited in acid manufacturing processes, form the complicated difficult tailing of the elements such as cupric, lead, zinc, arsenic, silver.More than 85% in tailing
It is made up of lead sulfate, secondly also containing the valuable metal such as bismuth, a small amount of selenium and copper, zinc.
The conventional treatment method of leaded tailing has alkali neutralization and blast furnace smelting process in copper metallurgy industry.Wherein alkali neutralizes
The waste water and sediment that technique is formed, both pollute environment, cause the loss of the valuable metals such as copper, silver again.Shaft smelting work
Skill, not only environmental pollution is serious, and a large amount of valuable metals are distributed in various smelting slags, and direct yield is not high and is separated from each other tired
It is difficult.
The content of the invention
The invention aims to solve technical problem present in prior art, there is provided a kind of production cost is low, has
Valency metal recovery rate is high, return period is short, do not produce slag and effluent lead, bismuth and noble metal are reclaimed from the leaded tailing of relieving haperacidity
Smelting process.
In order to achieve the above object, the present invention uses following technical scheme：One kind reclaims lead, bismuth from the leaded tailing of relieving haperacidity
And the smelting process of noble metal, this method comprise the following steps：
A, it will be put into from the leaded tailing of acid-making process output in reduction melting equipment, and be incorporated going back for leaded tailing weight 15-20%
Former agent, leaded tailing weight 20-30% flux, and 1200-1250 DEG C is heated to, insulation divided alloy and smelting slag after 1 hour
From；
B, by the ladle refining vacuum distillation plant obtained by reduction melting, vacuum ＜ 30Pa are controlled, and at 1100-1200 DEG C
Insulation 1 hour, obtains ＜ containing Pb 1%, Bi ＜ 1%, Ag>1% rich silver alloy and Pb, Bi total amount is not less than 99% lead bismuth alloy,
Rich silver alloy returns precious metal smelting system production silver products, and lead bismuth alloy can sell.
Further, it is caused each in wet method acid manufacturing processes from the leaded tailing of acid-making process output in the step A
The complicated intractable leaded tailing of kind, its main chemical compositions are：Pb 48.2 -60.2%、Bi 1.8-4.5%、Au 2.4-
3.7%、Cu 0.45-0.92%、Se 0.23-0.57%、As 0.16-1.32%、Ag 192-389 g/t。
Further, reducing agent is carbonaceous reducing agent used by reduction melting in the step A.
Further, the reducing agent is one kind in anthracite, bituminous coal, lignite, fine coal.
Further, flux is one kind in lime stone, soda ash, quartz used by reduction melting in the step A.
The present invention has the advantages that compared with the prior art：The present invention from the leaded tailing of relieving haperacidity reclaim lead, bismuth and
The smelting process of noble metal is that smelting slag is separated to the leaded tailing of acid-making process output after high temperature reduction melting processing, is produced
Go out high metal, then after technique is evaporated in vacuo, obtain lead bismuth alloy of Pb, Bi total amount not less than 99% and containing Ag>1% Fu Yin
Alloy, wherein obtained lead bismuth alloy has reached the lead of lead bismuth product, bi content requirement, reduce refining removal of impurities process, simultaneously
The loss of lead, bismuth is decreased, therefore, method of the invention reduces production cost, improves the rate of recovery of valuable metal, contracting
Short lead, bismuth return period, lead, bismuth recovery value are improved, the product quality of production is high.Meanwhile the leaded tailing of the present invention exists
Free of losses in reduction melting, vacuum distillation technical process, it can all realize the multi-cycle separation of metal, the comprehensive recovery of metal
Height, and waste residue, flue dust, waste gas etc. are not produced, be advantageous to raw material value and fully realize, it is green.In addition, the method for the present invention
Strong to adaptability to raw material, technique easily adjusts, and production process is easy to control.
Brief description of the drawings
Fig. 1 is the process chart of the present invention.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
Certain leaded tailing of smeltery's wet method relieving haperacidity（Mainly average assay is：Pb 48.85%、Bi 2.58%、Au 3.41%、Cu
0.72%、Se 0.35%、As 0.16%、Ag 383g/t）, by the leaded tailing input reduction melting equipment, it is incorporated leaded tail
Expect reducing agent, the flux of leaded tailing weight 25% of weight 15%, reducing agent is anthracite, flux is soda ash, and is heated to
1250 DEG C, insulation separated alloy and smelting slag after 1 hour；By in the ladle refining vacuum distillation plant obtained by reduction melting,
Vacuum ＜ 30Pa are controlled, and 1 hour is incubated at 1100 DEG C, obtain rich silver alloy（Cu 19.76%、Ag 1.96%、Pb
0.014%、Bi 0.0069%）And lead bismuth alloy（Pb 95.52%、Bi 3.84%）, rich silver alloy returns precious metal smelting system production
Silver products, lead bismuth alloy can sell.
Embodiment 2
Certain leaded tailing of smeltery's wet method relieving haperacidity（Mainly average assay is：Pb 50.56%、Bi 4.25%、Au 2.48%、Se
0.46%、As 0.71%、Ag 313 g/t）, by the leaded tailing input reduction melting equipment, it is incorporated leaded tailing weight 20%
Reducing agent, the flux of leaded tailing weight 20%, reducing agent is lignite, flux is lime stone, and is heated to 1200 DEG C, insulation 1
Alloy and smelting slag are separated after hour；By in the ladle refining vacuum distillation plant obtained by reduction melting, vacuum ＜ is controlled
30Pa, and 1 hour is incubated at 1200 DEG C, obtain rich silver alloy（Cu 22.78%、Ag 1.58%、Pb 0.17%、Bi 0.02%）With
Lead bismuth alloy（Pb 95.62%、Bi 4.25%）, rich silver alloy returns precious metal smelting system production silver products, and lead bismuth alloy can be straight
Pick out and sell.
Embodiment 3
Certain leaded tailing of smeltery's wet method relieving haperacidity（Mainly average assay is：Pb 58.13%、Bi 2.73%、Au 3.07%、Cu
0.54%、As 1.03%、Ag 203 g/t）, by the leaded tailing input reduction melting equipment, it is incorporated leaded tailing weight 15%
Reducing agent, the flux of leaded tailing weight 30%, reducing agent is fine coal, flux is quartz, and is heated to 1250 DEG C, and insulation 1 is small
When after alloy and smelting slag are separated；By in the ladle refining vacuum distillation plant obtained by reduction melting, vacuum ＜ is controlled
30Pa, and 1 hour is incubated at 1150 DEG C, obtain rich silver alloy（Cu 20.14%、Ag 1.78%、Pb 0.065%、Bi 0.011%）
And lead bismuth alloy（Pb 95.38%、Bi 4.13%）, rich silver alloy returns precious metal smelting system production silver products, and lead bismuth alloy can
Sell.
Claims (5)
1. the smelting process of lead, bismuth and noble metal is reclaimed in a kind of leaded tailing from relieving haperacidity, it is characterised in that this method include with
Lower step：
A, it will be put into from the leaded tailing of acid-making process output in reduction melting equipment, and be incorporated going back for leaded tailing weight 15-20%
Former agent, leaded tailing weight 20-30% flux, and 1200-1250 DEG C is heated to, insulation divided alloy and smelting slag after 1 hour
From；
B, by the ladle refining vacuum distillation plant obtained by reduction melting, vacuum ＜ 30Pa are controlled, and at 1100-1200 DEG C
Insulation 1 hour, obtains ＜ containing Pb 1%, Bi ＜ 1%, Ag>1% rich silver alloy and Pb, Bi total amount is not less than 99% lead bismuth alloy,
Rich silver alloy returns precious metal smelting system production silver products, and lead bismuth alloy can sell.
2. reclaiming the smelting process of lead, bismuth and noble metal in a kind of leaded tailing from relieving haperacidity according to claim 1, it is special
Sign is：From the leaded tailing of acid-making process output it is caused various complicated difficulty in wet method acid manufacturing processes in the step A
The leaded tailing of reason, its main chemical compositions are：Pb 48.2 -60.2%、Bi 1.8-4.5%、Au 2.4-3.7%、Cu 0.45-
0.92%、Se 0.23-0.57%、As 0.16-1.32%、Ag 192-389 g/t。
3. reclaiming the smelting process of lead, bismuth and noble metal in a kind of leaded tailing from relieving haperacidity according to claim 1, it is special
Sign is：Reducing agent is carbonaceous reducing agent used by reduction melting in the step A.
4. reclaiming the smelting process of lead, bismuth and noble metal in a kind of leaded tailing from relieving haperacidity according to claim 3, it is special
Sign is：The reducing agent is one kind in anthracite, bituminous coal, lignite, fine coal.
5. reclaiming the smelting process of lead, bismuth and noble metal in a kind of leaded tailing from relieving haperacidity according to claim 1, it is special
Sign is：Flux is one kind in lime stone, soda ash, quartz used by reduction melting in the step A.
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| CN201710996095.0A CN107557588A (en) | 2017-10-23 | 2017-10-23 | The smelting process of lead, bismuth and noble metal is reclaimed in a kind of leaded tailing from relieving haperacidity |
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| CN201710996095.0A CN107557588A (en) | 2017-10-23 | 2017-10-23 | The smelting process of lead, bismuth and noble metal is reclaimed in a kind of leaded tailing from relieving haperacidity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110760688A (en) * | 2019-10-23 | 2020-02-07 | 金川集团股份有限公司 | Method for deeply removing impurities and enriching precious metals in complex lead-bismuth alloy |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105483384A (en) * | 2015-12-08 | 2016-04-13 | 昆明理工大学 | Method for recovering valuable metals from copper anode mud flotation tailings |
| CN105803213A (en) * | 2016-04-28 | 2016-07-27 | 河南金利金铅集团有限公司 | Method for refining bismuth from bismuth oxide slags |
| CN105969989A (en) * | 2016-06-20 | 2016-09-28 | 铜陵有色金属集团铜冠新技术有限公司 | Novel high-impurity copper anode mud treatment technology |
-
2017
- 2017-10-23 CN CN201710996095.0A patent/CN107557588A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105483384A (en) * | 2015-12-08 | 2016-04-13 | 昆明理工大学 | Method for recovering valuable metals from copper anode mud flotation tailings |
| CN105803213A (en) * | 2016-04-28 | 2016-07-27 | 河南金利金铅集团有限公司 | Method for refining bismuth from bismuth oxide slags |
| CN105969989A (en) * | 2016-06-20 | 2016-09-28 | 铜陵有色金属集团铜冠新技术有限公司 | Novel high-impurity copper anode mud treatment technology |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110760688A (en) * | 2019-10-23 | 2020-02-07 | 金川集团股份有限公司 | Method for deeply removing impurities and enriching precious metals in complex lead-bismuth alloy |
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