CN105567961A - Method for separating iron and sulfur in jarosite slag through biological technique - Google Patents
Method for separating iron and sulfur in jarosite slag through biological technique Download PDFInfo
- Publication number
- CN105567961A CN105567961A CN201610030638.9A CN201610030638A CN105567961A CN 105567961 A CN105567961 A CN 105567961A CN 201610030638 A CN201610030638 A CN 201610030638A CN 105567961 A CN105567961 A CN 105567961A
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- China
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- iron
- vitriol slag
- iron vitriol
- slag
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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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/18—Extraction of metal compounds from ores or concentrates by wet processes with the aid of microorganisms or enzymes, e.g. bacteria or algae
-
- 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 method for separating iron and sulfur in jarosite slag through a biological technique. The method is characterized by comprising the steps that water, a concrete water reducer and an acidity regulator are added into the jarosite slag and evenly mixed, then a carbon resource and sulfate reducing bacteria are added and evenly mixed, and finally the mixture is placed in an airtight container provided with an exhaust pipe. Exhausted gaseous hydrogen sulfate is recovered with an iron sulfide solution, so that elemental sulfur is obtained, and biologically-decomposed iron slag is used as ironmaking raw materials. By the adoption of the method, the problem of environment pollution caused by the jarosite slag can be solved, waste is turned into wealth, and the ironmaking raw materials and the sulfur are obtained; the method has the characteristics of being low in cost and free of secondary pollution.
Description
Technical field
The present invention relates to a kind of wet zinc metallurgical, the method for separation of iron and sulphur in the iron vitriol slag particularly produced from its process.
Background technology
Nearly ten years, the plumbous zinc metallurgy of China maintains the impetus increased fast, and 2010, plumbous zinc ultimate production reached 958.10 ten thousand tons.For the wet process Sheng electricity zinc factory of annual output 100000 tons, if zinc ore concentrate iron content is in 8%, then the iron vitriol slag of annual output is about 5.3 ten thousand tons, general slag field of building nearby is stored up, not only take valuable land resources, and the heavy metal in iron vitriol slag, as Zn, Cu, Cd, Pb, As and Sb etc., naturally the continuous stripping of meeting under condition is being stored up thus polluted underground water and soil [Chen Yongming, Tang Motang, 19th volume the 7th interim state non-ferrous metal journal Yang Sheng sea, decompose containing indium iron vitriol slag novel method [J] Deng .NaOH. China YouSe Acta Metallurgica Sinica, 2009, 19 (7): 1322 ~ 1331].The plumbous zinc metal production of China occupies the first in the world for years.While the develop rapidly of product production capacity, the process problem of the iron vitriol slag in production process progressively shows especially, is not only related to the comprehensive cyclic utilization of resource, and is more related to the impact on physical environment.
The method of current process iron vitriol slag is mainly employing high-temperature calcination, and high-temperature calcination needs fuel, and cost is higher, the waste gas sulfur-bearing of generation, contaminate environment.With biological treatment, there is cost low, the feature of non-secondary pollution.
Summary of the invention
The object of this invention is to provide a kind of method that biological method is separated iron and sulphur in iron vitriol slag, the environmental problem of iron vitriol slag can be solved, turn waste into wealth, also can obtain iron-smelting raw material and elemental sulfur.
Technical scheme of the present invention is: a kind of biotechnology is separated the method for iron and sulphur in iron vitriol slag, comprises the steps: successively
A, iron vitriol slag pre-treatment: in iron vitriol slag, add water, cement water reducing agent, acidity regulator, after mixing, ageing 24 hours; Wherein cement water reducing agent is the one in alkyl benzene calcium sulfonate, calcium lignin sulphonate, poly carboxylic acid calcium or oxidized paraffin wax soap, and add-on is the 0.5-2% of iron vitriol slag quality; Acidity regulator is the one of lime, carbide slag, and add-on is the 10-20% of iron vitriol slag quality; The add-on of water is 100% of iron vitriol slag quality;
B, biological decomposition: add carbon source and sulphate reducing bacteria by pretreated for steps A iron vitriol slag, after mixing, the encloses container of tape loaded vapor pipe, hydrogen sulfide is got rid of from pipe; Wherein carbon source is the stalk after hydrolysis bacterium is decomposed, and add-on is 10% of iron vitriol slag quality;
C: hydrogen sulfide reclaims: the hydrogen sulfide ferrum sulfuricum oxydatum solutum got rid of in step B is carried out recovery and obtains elemental sulfur, the iron vitriol slag after biological decomposition is as iron-smelting raw material.
In the present invention: step B sulphate reducing bacteria bacterial classification (Sulfate-reducingBacteria) used is extracted from controlling proposals;
In iron vitriol slag, add cement water reducing agent, be conducive to the dispersion of iron vitriol slag, and reduce water requirement.Acidity regulator by the iron vitriol slag of acidity, can be adjusted to neutral, is conducive to the growth of sulphate reducing bacteria.
Carbide slag for calcium carbide be raw material prepare acetylene time, the waste residue of generation, the main component of carbide slag is calcium hydroxide, can be used as acidity regulator use.
Sulphate reducing bacteria (Sulfate-reducingBacteria) is separated from controlling proposals, can adapt to the toxicity of heavy metal in iron vitriol slag.
Carbon source is the stalk after hydrolysis bacterium is decomposed, and has the advantages that raw material is easy to get, cost is low.
Ferric iron back in ferrum sulfuricum oxydatum solutum can be become ferrous iron by the hydrogen sulfide produced, and sulphur becomes elemental sulfur, is conducive to reclaiming; In ferrous ion solution, pass into air, be easily oxidized to ferric ion, therefore, ferrum sulfuricum oxydatum solutum can recycle.
Embodiment
The specific embodiment of the present invention is:
A, iron vitriol slag pre-treatment: after adding water, cement water reducing agent in iron vitriol slag, mixing, ageing 24 hours, table 1 lists 13 the pretreated embodiments of iron vitriol slag being numbered 1 ~ 13.
The pre-treatment of table 1 iron vitriol slag
B, biological decomposition: add carbon source and sulphate reducing bacteria by pretreated for steps A iron vitriol slag, after mixing, the encloses container of tape loaded vapor pipe; Wherein carbon source is the stalk after hydrolysis bacterium is decomposed, and add-on is 10% of iron vitriol slag quality.In 100Kg iron vitriol slag, add about 10
7individual sulphate reducing bacteria.
C, hydrogen sulfide reclaim: the hydrogen sulfide ferrum sulfuricum oxydatum solutum got rid of in step B is carried out recovery and obtains elemental sulfur, the scum after biological decomposition is as iron-smelting raw material.
Above-mentioned 13 embodiments all can reach goal of the invention, and can be separated with sulphur the iron in iron vitriol slag, obtain elemental sulfur, the scum after biological decomposition is as iron-smelting raw material.
Microorganism involved in the inventive method is known microorganisms.
Claims (2)
1. be separated a method for iron and sulphur in iron vitriol slag by biotechnology, it is characterized in that, comprise the steps:
A, iron vitriol slag pre-treatment: in iron vitriol slag, add water, cement water reducing agent, acidity regulator, after mixing, ageing 24 hours; Wherein cement water reducing agent is the one in alkyl benzene calcium sulfonate, calcium lignin sulphonate, poly carboxylic acid calcium or oxidized paraffin wax soap, and add-on is the 0.5-2% of iron vitriol slag quality; Acidity regulator is the one of lime, carbide slag, and add-on is the 10-20% of iron vitriol slag quality; The add-on of water is 100% of iron vitriol slag quality;
B, biological decomposition: add carbon source and sulphate reducing bacteria by pretreated for steps A iron vitriol slag, after mixing, the encloses container of tape loaded vapor pipe, hydrogen sulfide is got rid of from pipe;
C: hydrogen sulfide reclaims: the hydrogen sulfide ferrum sulfuricum oxydatum solutum got rid of in step B is carried out recovery and obtains elemental sulfur, the iron vitriol slag after biological decomposition is as iron-smelting raw material.
2. biotechnology according to claim 1 is separated the method for iron and sulphur in iron vitriol slag, it is characterized in that, step B wherein carbon source used is the stalk after hydrolysis bacterium is decomposed, and add-on is 10% of iron vitriol slag quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610030638.9A CN105567961B (en) | 2016-01-18 | 2016-01-18 | A kind of method that iron and sulphur in iron vitriol slag are separated with biotechnology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610030638.9A CN105567961B (en) | 2016-01-18 | 2016-01-18 | A kind of method that iron and sulphur in iron vitriol slag are separated with biotechnology |
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| Publication Number | Publication Date |
|---|---|
| CN105567961A true CN105567961A (en) | 2016-05-11 |
| CN105567961B CN105567961B (en) | 2017-10-03 |
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| CN201610030638.9A Expired - Fee Related CN105567961B (en) | 2016-01-18 | 2016-01-18 | A kind of method that iron and sulphur in iron vitriol slag are separated with biotechnology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111530435A (en) * | 2020-05-22 | 2020-08-14 | 西南科技大学 | Polyurethane soft foam adsorption material internally wrapped with chrysotile nanotubes and preparation method thereof |
| CN115247232A (en) * | 2022-03-02 | 2022-10-28 | 西南科技大学 | Method for settling and separating chalcoalumite slag calcification product |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103523832A (en) * | 2013-09-04 | 2014-01-22 | 陕西理工学院 | Process for recovering sulfur from ammoniojarosite |
| CN103801192A (en) * | 2014-02-21 | 2014-05-21 | 陕西理工学院 | Flue gas denitrification process for cement kiln |
| CN104911365A (en) * | 2015-04-14 | 2015-09-16 | 中南大学 | Cadmia reduction smelting method for the preparation of low-phosphorus iron |
-
2016
- 2016-01-18 CN CN201610030638.9A patent/CN105567961B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103523832A (en) * | 2013-09-04 | 2014-01-22 | 陕西理工学院 | Process for recovering sulfur from ammoniojarosite |
| CN103801192A (en) * | 2014-02-21 | 2014-05-21 | 陕西理工学院 | Flue gas denitrification process for cement kiln |
| CN104911365A (en) * | 2015-04-14 | 2015-09-16 | 中南大学 | Cadmia reduction smelting method for the preparation of low-phosphorus iron |
Non-Patent Citations (1)
| Title |
|---|
| 王红梅等: "硫酸盐还原菌及异化铁还原菌对黄钾铁矾还原作用的对比", 《地球科学——中国地质大学学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111530435A (en) * | 2020-05-22 | 2020-08-14 | 西南科技大学 | Polyurethane soft foam adsorption material internally wrapped with chrysotile nanotubes and preparation method thereof |
| CN111530435B (en) * | 2020-05-22 | 2022-04-22 | 西南科技大学 | Polyurethane soft foam adsorption material internally wrapped with chrysotile nanotubes and preparation method thereof |
| CN115247232A (en) * | 2022-03-02 | 2022-10-28 | 西南科技大学 | Method for settling and separating chalcoalumite slag calcification product |
| CN115247232B (en) * | 2022-03-02 | 2024-04-09 | 广州大鱼创福科技有限公司 | Settling separation method for chalcanthite slag calcified products |
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| CN105567961B (en) | 2017-10-03 |
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