CN102757023A - Method for recovering selenium from lead smelting soot - Google Patents
Method for recovering selenium from lead smelting soot Download PDFInfo
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- CN102757023A CN102757023A CN201210255076XA CN201210255076A CN102757023A CN 102757023 A CN102757023 A CN 102757023A CN 201210255076X A CN201210255076X A CN 201210255076XA CN 201210255076 A CN201210255076 A CN 201210255076A CN 102757023 A CN102757023 A CN 102757023A
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- cigarette ash
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Abstract
The invention discloses a method for recovering selenium from lead smelting soot. The method comprises the following steps of: firstly leaching lead smelting soot by adopting warm water, performing filter pressing on the lead smelting soot by adopting a plate-and-frame filter press after leaching, adding filtrate into a replacement tank after filter pressing, adding sulfuric acid, then adding gas sulphur dioxide for replacement reaction, and carrying out solid-liquid separation after replacement precipitation to produce coarse selenium. The method is used for recovering non-ferrous metal in the soot under the circumstance of less investment, and can recover selenium in the soot so as to improve the utilization ratio of resources and increase the enterprise benefits.
Description
Technical field
The present invention relates to a kind of treatment process of refining the lead smelting cigarette ash that produces in the plumbous industry, particularly relate to a kind of method of smelting recovery selenium the cigarette ash from lead.
Background technology
In the technological process of pyrometallurgical smelting of lead, produced a large amount of lead and smelted cigarette ash, and plumbous the smelting in the bottom blowing cigarette ash contained a certain amount of selenium.At present, owing to lack effective and reasonable recovery technology, selenium in its plumbous smelting cigarette ash is not carried out efficient recovery, thereby caused the waste of a large amount of selenium resources.
At present, along with petering out of resource, the minimizing day by day of profit margin, industrial and mining enterprises should reclaim the nonferrous metal resource of association as far as possible, improve the utilization ratio of resource, become the common problem that the heavy non-ferrous metal smelting industry faces.For the common problem that can fine solution faces, need the recovery technology problem of some heavy metals in the relevant heavy non-ferrous metal smelting process of development research.
Summary of the invention
The technical problem that the present invention will solve provides a kind of method of smelting recovery selenium the cigarette ash from lead.The inventive method is a kind of under the less situation of investment, reclaims the method for the non-ferrous metal in the cigarette ash, can reclaim the selenium in the cigarette ash, improves resource utilization, increases the performance of enterprises.
In order to address the above problem, the technical scheme that the present invention adopts is:
Method of smelting recovery selenium the cigarette ash of the present invention from lead, said recovery method may further comprise the steps:
A, lead is smelted cigarette ash adopt warm water to dissolve leaching;
B, the plumbous smelting are carried out press filtration with plate-and-frame filter press after cigarette ash leaches, thereby are realized solid-liquid separation;
C, will filter rear filtrate and add the vitriol oil in proportion; Making the solution sulfuric acid concentration is 10-40%, carries out replacement(metathesis)reaction with sulfur dioxide gas then, and the add-on of sulfurous gas is 1.2～1.3 times of the theoretical requirement of replacement(metathesis)reaction; Sulfurous gas pressure is 0.02-0.05 MPa, and temperature is a normal temperature.Displace the selenium in the solution, last solid-liquid separation obtains thick selenium product.
Leaching liquid described in the said step a is warm water, and temperature is 35～45 ℃, and the leaching liquid-solid ratio is 1:4-5, and leaching pressure is normal pressure, and extraction time is 3-4h.
The said solid-liquid separating method of said step b is the plate-and-frame filter press press filtration, and press filtration pressure is 0.6MPa.
The method that from filtrating, reclaims selenium described in the said step c adds the vitriol oil in proportion for filtering rear filtrate, and making the solution sulfuric acid concentration is 10-40%, carries out precipitin reaction with sulfurous gas then; The add-on of said sulfurous gas is 1.2 times of the theoretical requirement of replacement(metathesis)reaction, and pressure is 0.02-0.05 MPa.
Positive beneficial effect of the present invention:
1, utilize the inventive method to smelt the selenium in the cigarette ash by efficient recovery lead.Adopt the inventive method to reclaim the plumbous selenium of smelting in the cigarette ash, its cost of investment is low, and safety and environmental protection.
2, adopt the inventive method that its plumbous selenium of smelting in the cigarette ash has been carried out effective recycling, thereby improved the utilization ratio of resource, increased the performance of enterprises.Thereby the present invention has remarkable economic efficiency and social benefit.
Embodiment
Following examples have been merely and have further specified the present invention, do not limit content of the present invention.
Embodiment 1
The detailed step of the method that from lead smelting cigarette ash, reclaims selenium of present embodiment is following:
A, lead is smelted cigarette ash adopt warm water to dissolve leaching, the temperature of said warm water is 36 ℃, and the leaching liquid-solid ratio is 1:4.2, and leaching pressure is normal pressure, extraction time 3.5h;
B, the plumbous smelting are carried out press filtration with common plate-and-frame filter press after cigarette ash leaches, thereby are realized solid-liquid separation.Plate-and-frame filter press press filtration pressure is 0.6MPa;
C, will filter rear filtrate and add the vitriol oil in proportion; Making the solution sulfuric acid concentration is 15%, carries out replacement(metathesis)reaction with sulfur dioxide gas then, and the add-on of sulfurous gas is 11.3 times of the theoretical requirement of replacement(metathesis)reaction; Sulfurous gas pressure is 0.02 MPa, and temperature is a normal temperature.Displace the selenium in the solution, last solid-liquid separation obtains thick selenium product.
Embodiment 2
The detailed step of the method that from lead smelting cigarette ash, reclaims selenium of present embodiment is following:
A, lead is smelted cigarette ash adopt warm water to dissolve leaching, the temperature of said warm water is 39 ℃, and the leaching liquid-solid ratio is 1:4.7, and leaching pressure is normal pressure, extraction time 3.7h;
B, the plumbous smelting are carried out press filtration with common plate-and-frame filter press after cigarette ash leaches, thereby are realized solid-liquid separation.Plate-and-frame filter press press filtration pressure is 0.6MPa;
C, will filter rear filtrate and add the vitriol oil in proportion; Making the solution sulfuric acid concentration is 10-40%, carries out replacement(metathesis)reaction with sulfur dioxide gas then, and the add-on of sulfurous gas is 1.27 times of the theoretical requirement of replacement(metathesis)reaction; Sulfurous gas pressure is 0.04 MPa, and temperature is a normal temperature.Displace the selenium in the solution, last solid-liquid separation obtains thick selenium product.
Embodiment 3
The detailed step of the method that from lead smelting cigarette ash, reclaims selenium of present embodiment is following:
A, lead is smelted cigarette ash adopt warm water to dissolve leaching, the temperature of said warm water is 39 ℃, and the leaching liquid-solid ratio is 1:4.8, and leaching pressure is normal pressure, extraction time 3.6h;
B, the plumbous smelting are carried out press filtration with common plate-and-frame filter press after cigarette ash leaches, thereby are realized solid-liquid separation.Plate-and-frame filter press press filtration pressure is 0.6MPa;
C, will filter rear filtrate and add the vitriol oil in proportion; Making the solution sulfuric acid concentration is 22%, carries out replacement(metathesis)reaction with sulfur dioxide gas then, and the add-on of sulfurous gas is 1.28 times of the theoretical requirement of replacement(metathesis)reaction; Sulfurous gas pressure is 0.04 MPa, and temperature is a normal temperature.Displace the selenium in the solution, last solid-liquid separation obtains thick selenium product.
Embodiment 4
The method that from lead smelting cigarette ash, reclaims selenium of present embodiment, the detailed step of said recovery method is following:
A, lead is smelted cigarette ash adopt warm water to dissolve leaching, the temperature of said warm water is 42 ℃, and the leaching liquid-solid ratio is 1:4.1, and leaching pressure is normal pressure, extraction time 3-4h;
B, the plumbous smelting are carried out press filtration with common plate-and-frame filter press after cigarette ash leaches, thereby are realized solid-liquid separation.Plate-and-frame filter press press filtration pressure is 0.6MPa;
C, will filter rear filtrate and add the vitriol oil in proportion; Making the solution sulfuric acid concentration is 30%, carries out replacement(metathesis)reaction with sulfur dioxide gas then, and the add-on of sulfurous gas is 1.3 times of the theoretical requirement of replacement(metathesis)reaction; Sulfurous gas pressure is 0.02MPa, and temperature is a normal temperature.Displace the selenium in the solution, last solid-liquid separation obtains thick selenium product.
Claims (4)
1. smelt the method that reclaims selenium the cigarette ash from lead for one kind, it is characterized in that said recovery method may further comprise the steps:
A, lead is smelted cigarette ash adopt warm water to dissolve leaching;
B, the plumbous smelting are carried out press filtration with plate-and-frame filter press after cigarette ash leaches, thereby are realized solid-liquid separation;
C, will filter rear filtrate and add the vitriol oil in proportion; Making the solution sulfuric acid concentration is 10-40%, carries out replacement(metathesis)reaction with sulfur dioxide gas then, and the add-on of sulfurous gas is 1.2～1.3 times of the theoretical requirement of replacement(metathesis)reaction; Sulfurous gas pressure is 0.02-0.05 MPa; Temperature is a normal temperature, displaces the selenium in the solution, and last solid-liquid separation obtains thick selenium product.
2. method of smelting recovery selenium the cigarette ash from lead according to claim 1, it is characterized in that: leaching liquid described in the step a is warm water, and temperature is 35～45 ℃, and the leaching liquid-solid ratio is 1:4-5, and leaching pressure is normal pressure, and extraction time is 3-4h.
3. the method that from the lead fume ash, reclaims selenium according to claim 1, it is characterized in that: the said solid-liquid separating method of step b is the plate-and-frame filter press press filtration, press filtration pressure is 0.6MPa.
4. method of smelting recovery selenium the cigarette ash according to claim 1 from lead; It is characterized in that: the method that from filtrating, reclaims selenium described in the step c adds the vitriol oil in proportion for filtering rear filtrate; Making the solution sulfuric acid concentration is 10-40%, carries out precipitin reaction with sulfurous gas then; The add-on of said sulfurous gas is 1.2 times of the theoretical requirement of replacement(metathesis)reaction, and pressure is 0.02-0.05 MPa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210255076.XA CN102757023B (en) | 2012-07-23 | 2012-07-23 | Method for recovering selenium from lead smelting soot |
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| CN201210255076.XA CN102757023B (en) | 2012-07-23 | 2012-07-23 | Method for recovering selenium from lead smelting soot |
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| CN102757023A true CN102757023A (en) | 2012-10-31 |
| CN102757023B CN102757023B (en) | 2014-08-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104495758A (en) * | 2014-12-07 | 2015-04-08 | 金川集团股份有限公司 | Method for extracting selenium and tellurium from pyrometallurgy smelting soot |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1070814A (en) * | 1965-07-13 | 1967-06-07 | Mansfeld Kombinat W Pieck Veb | Process for production of pure selenium |
| CN1923674A (en) * | 2006-09-29 | 2007-03-07 | 金川集团有限公司 | Method of recovering selenium |
| CN202161911U (en) * | 2011-06-16 | 2012-03-14 | 中国恩菲工程技术有限公司 | Flue gas treatment equipment |
| CN102491287A (en) * | 2011-12-11 | 2012-06-13 | 郴州市金贵银业股份有限公司 | Process for separating and recovering selenium from selenium-containing material |
| CN102583264A (en) * | 2012-02-03 | 2012-07-18 | 昆明冶金研究院 | Method for leaching selenium in acid mud by using sodium sulfite |
-
2012
- 2012-07-23 CN CN201210255076.XA patent/CN102757023B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1070814A (en) * | 1965-07-13 | 1967-06-07 | Mansfeld Kombinat W Pieck Veb | Process for production of pure selenium |
| CN1923674A (en) * | 2006-09-29 | 2007-03-07 | 金川集团有限公司 | Method of recovering selenium |
| CN202161911U (en) * | 2011-06-16 | 2012-03-14 | 中国恩菲工程技术有限公司 | Flue gas treatment equipment |
| CN102491287A (en) * | 2011-12-11 | 2012-06-13 | 郴州市金贵银业股份有限公司 | Process for separating and recovering selenium from selenium-containing material |
| CN102583264A (en) * | 2012-02-03 | 2012-07-18 | 昆明冶金研究院 | Method for leaching selenium in acid mud by using sodium sulfite |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104495758A (en) * | 2014-12-07 | 2015-04-08 | 金川集团股份有限公司 | Method for extracting selenium and tellurium from pyrometallurgy smelting soot |
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| CN102757023B (en) | 2014-08-13 |
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