CN106834721A - A kind of its recovery method as resource of the leaded zinc powder dirt of blast furnace - Google Patents
A kind of its recovery method as resource of the leaded zinc powder dirt of blast furnace Download PDFInfo
- Publication number
- CN106834721A CN106834721A CN201710005041.3A CN201710005041A CN106834721A CN 106834721 A CN106834721 A CN 106834721A CN 201710005041 A CN201710005041 A CN 201710005041A CN 106834721 A CN106834721 A CN 106834721A
- Authority
- CN
- China
- Prior art keywords
- blast furnace
- zinc powder
- powder dirt
- resource
- leaded zinc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/02—Working-up flue dust
-
- 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
- C22B13/00—Obtaining lead
- C22B13/02—Obtaining lead by dry processes
- C22B13/025—Recovery from waste materials
-
- 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
- C22B13/00—Obtaining lead
- C22B13/04—Obtaining lead by wet processes
- C22B13/045—Recovery from waste materials
-
- 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
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/04—Obtaining zinc by distilling
-
- 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
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/30—Obtaining zinc or zinc oxide from metallic residues or scraps
-
- 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
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
-
- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
-
- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides a kind of its recovery method as resource of the leaded zinc powder dirt of blast furnace, the leaded zinc powder dirt of blast furnace is mixed with a certain proportion of carbon dust first, in being placed in top and having a vacuum reactor of condensing unit, the oxide of zinc is carried out into carbon reduction, evaporation gasification under vacuum conditions, is collected by condensing unit and reclaimed；Then the dust after treatment carried out into high-temperature calcination, add salpeter solution dissolving, addition sodium chloride reactive crystallization, addition sodium carbonate liquor to be converted into ceruse, heat resolve obtains lead oxide, recycles vacuum carbon reduction to obtain elementary lead.The resource that substep of the invention carries out reclaims zinc and lead, whole process process is simple, and it is high to clean degree, vacuum reduction treatment non-secondary pollution problem.
Description
Technical field：
The invention belongs to secondary resource recycling field, and in particular to a kind of resource reclaim side of the leaded zinc powder dirt of blast furnace
Method.
Technical background：
Domestic leaded zinc powder dirt be mainly derived from electric furnace dust and south using leaded zinc ore higher (zinc 0.3-0.8%,
Lead 0.1-0.27%) blast furnace output dust, such dust at present pile up like a mountain near many steel mills, it is not complete according to 1994
Full statistics, zinc amount therein is at least up to 30,000 t, accounts for 1991 the 5.8% of China's zinc total output, has both caused serious environment
Pollution, also makes occupation of land and secondary resource waste problem increasingly serious.
At present, in the leaded zinc powder dirt of domestic steel plant's blast furnace, the content of lead is 2-7%, and the content of zinc is 3-17%, remaining
It is carbon, iron and other compounds.In the prior art, the method for the treatment of is mainly directly returned as raw materials for sintering, but this side
The subject matter that method is present is that have alkali metal compound in dust, and the grade to iron is impacted；Also use rotary kiln or turn
Bottom stove technology, the shortcoming of this method treatment is that high energy consumption, processing cost be high, the rate of recovery is not high；Acidleach wet-treating is general
Separation process is long, and processing cost is high, and the element such as sulphur, chlorine of technical process is difficult treatment.
Accordingly, it would be desirable to research and develop a kind of more efficient, low cost and economic friendly method, the leaded zinc powder dirt of blast furnace is solved
Resource problem.
The content of the invention：
The technical problems to be solved by the invention are to provide a kind of its recovery method as resource of the leaded zinc powder dirt of blast furnace.
A kind of its recovery method as resource of the leaded zinc powder dirt of blast furnace of the present invention, is realized by following steps：
1) the leaded zinc powder dirt of blast furnace is mixed with a certain proportion of carbon dust, being placed in top has the vacuum reactor of condensing unit
In, to 900-1000 DEG C, isothermal holding 50-60min, the zinc in the leaded zinc powder dirt of blast furnace is formed heating-up temperature by after carbon reduction
Simple substance zinc, under vacuum conditions evaporation gasification, is collected by condensing unit and reclaimed；
2) treat that vacuum reactor is cooled to room temperature, take out the dust after separation of Zinc, sending carries out high-temperature calcination in calcining furnace；
3) dust after calcining is added into salpeter solution dissolving, forms nitrate solution；
4) excessive sodium chloride powder, stirring and dissolving is added to be separated out under -10 DEG C of temperature conditionss in nitrate solution
The chlorination leading crystal of white；
5) by step 4) in the chlorination leading crystal that obtains insert stirring and dissolving in 90 DEG C of hot water, add excessive sodium carbonate
Solution, obtains carbonic acid leading crystal；
6) by ceruse be heated to 450 DEG C thermally decomposed after obtain lead oxide；Lead oxide is mixed with the carbon dust of excess,
Temperature be 650 DEG C, system pressure be 10kpa under conditions of carry out vacuum reduction, obtain elemental metals lead.
The matter of a kind of its recovery method as resource of the leaded zinc powder dirt of blast furnace of the present invention, the leaded zinc powder dirt of described blast furnace and carbon dust
Amount is than being 10:1-2.
A kind of its recovery method as resource of the leaded zinc powder dirt of blast furnace of the present invention, the system pressure of described vacuum reactor is
20kpa。
A kind of its recovery method as resource of the leaded zinc powder dirt of blast furnace of the present invention, the calcining heat of described calcining furnace is 800-
900 DEG C, calcination time is 30-40min.
A kind of its recovery method as resource of the leaded zinc powder dirt of blast furnace of the present invention, described salpeter solution mass fraction is 4.5%.
Using a kind of its recovery method as resource of the leaded zinc powder dirt of blast furnace of above-mentioned technical proposal, its operation principle is sketched such as
Under：
Leaded zinc powder dirt is carried out into vacuum reduction and separated first, by zinc simple substance separation and recovery, this process cleans without
Pollution；Then the dust after dezincification is carried out into high-temperature calcination, it is therefore intended that so that sulphur, carbon, nitrogen in dust etc. is filled
Divided combustion, nitric acid dissolving is carried out after sloughing most of impurity, adds sodium chloride, and now lead chloride can be generated under cryogenic
Lead chloride, and other metal chlorides can not be separated out, and be separated with other materials in dust by lead, then be dissolved, carbon
Hydrochlorate, heating obtain lead oxide, and elementary lead is obtained by vacuum carbon reduction.
The beneficial effects of the invention are as follows：
1st, resource being carried out step by step and reclaiming zinc and lead, whole process process is simple cleans that degree is high, the zinc and lead of recovery
All exist with elemental metals, obtain the product of high value；
2nd, the present invention use method and apparatus are simple, pollution-free, low cost, efficiency high, the temperature of vacuum reduction is relatively low,
Energy consumption, and vacuum reduction treatment non-secondary pollution problem are reduce further in terms of existing technologies；
3rd, this method creatively proposes the resource recovery process of the leaded zinc powder dirt of blast furnace, is separated after first separation of Zinc
Lead, has obtained unexpected technique effect.
Brief description of the drawings：
Fig. 1 is a kind of process chart of its recovery method as resource of the leaded zinc powder dirt of blast furnace.
Specific embodiment：
Embodiment 1
The leaded zinc powder dirt 3kg of blast furnace is mixed with 0.3kg carbon dusts, is placed in during the vacuum reactor of condensing unit arranged at top,
To 900 DEG C, system pressure is 20kpa, isothermal holding 50min to heating-up temperature, and the zinc in the leaded zinc powder dirt of blast furnace is reduced by carbon
Simple substance zinc is formed afterwards, under vacuum conditions evaporation gasification, collected by condensing unit and reclaimed；Treat that vacuum reactor is cooled to room
Temperature, takes out the dust after separation of Zinc, send calcining in calcining furnace, and calcining heat is 800 DEG C, and calcination time is 30min；After calcining
Dust add 4.5% salpeter solution in dissolve, formed nitrate solution；Excessive sodium chloride is added in nitrate solution
Powder, stirring and dissolving separates out the chlorination leading crystal of white under -10 DEG C of temperature conditionss；The chlorination leading crystal that will be obtained is inserted
Stirring and dissolving in 90 DEG C of hot water, adds excessive sodium carbonate liquor, obtains carbonic acid leading crystal；Ceruse is heated to 450 DEG C
Lead oxide is obtained after being thermally decomposed；By lead oxide with excess carbon dust mix, temperature be 650 DEG C, system pressure be 10kpa
Under conditions of carry out vacuum reduction, obtain elemental metals lead.
Embodiment 2
The leaded zinc powder dirt 3kg of blast furnace is mixed with 0.6kg carbon dusts, is placed in during the vacuum reactor of condensing unit arranged at top,
To 1000 DEG C, system pressure is 20kpa, isothermal holding 60min to heating-up temperature, and the zinc in the leaded zinc powder dirt of blast furnace is reduced by carbon
Simple substance zinc is formed afterwards, under vacuum conditions evaporation gasification, collected by condensing unit and reclaimed；Treat that vacuum reactor is cooled to room
Temperature, takes out the dust after separation of Zinc, send calcining in calcining furnace, and calcining heat is 900 DEG C, and calcination time is 40min；After calcining
Dust add 4.5% salpeter solution in dissolve, formed nitrate solution；Excessive sodium chloride is added in nitrate solution
Powder, stirring and dissolving separates out the chlorination leading crystal of white under -10 DEG C of temperature conditionss；The chlorination leading crystal that will be obtained is inserted
Stirring and dissolving in 90 DEG C of hot water, adds excessive sodium carbonate liquor, obtains carbonic acid leading crystal；Ceruse is heated to 450 DEG C
Lead oxide is obtained after being thermally decomposed；By lead oxide with excess carbon dust mix, temperature be 650 DEG C, system pressure be 10kpa
Under conditions of carry out vacuum reduction, obtain elemental metals lead.
Claims (5)
1. its recovery method as resource of the leaded zinc powder dirt of a kind of blast furnace, it is characterised in that：Comprise the following steps：
1) the leaded zinc powder dirt of blast furnace is mixed with a certain proportion of carbon dust, is placed in during the vacuum reactor of condensing unit arranged at top,
Heating-up temperature is to 900-1000 DEG C, and isothermal holding 50-60min, the zinc in the leaded zinc powder dirt of blast furnace is single by formation after carbon reduction
Matter zinc, under vacuum conditions evaporation gasification, is collected by condensing unit and reclaimed；
2) treat that vacuum reactor is cooled to room temperature, take out the dust after separation of Zinc, sending carries out high-temperature calcination in calcining furnace；
3) dust after calcining is added into salpeter solution dissolving, forms nitrate solution；
4) add excessive sodium chloride powder, stirring and dissolving that white is separated out under -10 DEG C of temperature conditionss in nitrate solution
Chlorination leading crystal；
5) by step 4) in the chlorination leading crystal that obtains insert stirring and dissolving in 90 DEG C of hot water, add excessive sodium carbonate molten
Liquid, obtains carbonic acid leading crystal；
6) by ceruse be heated to 450 DEG C thermally decomposed after obtain lead oxide；Lead oxide is mixed with the carbon dust of excess, in temperature
Spend be 650 DEG C, system pressure be 10kpa under conditions of carry out vacuum reduction, obtain elemental metals lead.
2. its recovery method as resource of the leaded zinc powder dirt of a kind of blast furnace according to claim 1, it is characterised in that：Described height
The leaded zinc powder dirt of stove is 10 with the mass ratio of carbon dust:1-2.
3. its recovery method as resource of the leaded zinc powder dirt of a kind of blast furnace according to claim 1 and 2, it is characterised in that：It is described
Vacuum reactor system pressure be 20kpa.
4. a kind of its recovery method as resource of the leaded zinc powder dirt of blast furnace according to claims 1 to 3 any one, its feature exists
In：The calcining heat of described calcining furnace is 800-900 DEG C, and calcination time is 30-40min.
5. its recovery method as resource of the leaded zinc powder dirt of a kind of blast furnace described according to Claims 1-4 any one, it is special
Levy and be：Described salpeter solution mass fraction is 4.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710005041.3A CN106834721A (en) | 2017-01-04 | 2017-01-04 | A kind of its recovery method as resource of the leaded zinc powder dirt of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710005041.3A CN106834721A (en) | 2017-01-04 | 2017-01-04 | A kind of its recovery method as resource of the leaded zinc powder dirt of blast furnace |
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| Publication Number | Publication Date |
|---|---|
| CN106834721A true CN106834721A (en) | 2017-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710005041.3A Pending CN106834721A (en) | 2017-01-04 | 2017-01-04 | A kind of its recovery method as resource of the leaded zinc powder dirt of blast furnace |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460328A (en) * | 2017-07-31 | 2017-12-12 | 重庆科技学院 | A kind of method that lead and zinc are refined from the tutty of steel-making dust recovery |
| CN107460327A (en) * | 2017-07-28 | 2017-12-12 | 重庆科技学院 | A kind of comprehensive reutilization method of the leaded zinc powder dirt of electric furnace steel making |
| CN108977661A (en) * | 2018-09-10 | 2018-12-11 | 中国恩菲工程技术有限公司 | The extraction system of the Zn-ef ficiency of low-grade lead zinc ore |
| CN109055776A (en) * | 2018-09-10 | 2018-12-21 | 中国恩菲工程技术有限公司 | The extracting method of Zn-ef ficiency in low-grade lead zinc ore |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093117A (en) * | 1993-04-01 | 1994-10-05 | 北京科技大学 | The recovery method of the flue dust of iron content, manganese, zinc, lead and other elements |
| CN101092664A (en) * | 2007-06-28 | 2007-12-26 | 南京钢铁联合有限公司 | Method for processing dust with zinc of electric furnace |
| CN103896324A (en) * | 2014-03-19 | 2014-07-02 | 江苏科技大学 | Method for preparing nano-zinc oxide by utilizing blast furnace dust |
| CN105039724A (en) * | 2015-08-13 | 2015-11-11 | 张弘 | Smelting furnace soot treatment method |
| CN105087947A (en) * | 2015-09-16 | 2015-11-25 | 武汉钢铁(集团)公司 | Method for extracting zinc from blast furnace gas mud |
| CN105331823A (en) * | 2015-12-15 | 2016-02-17 | 安仁县永昌贵金属有限公司 | Lead waste residue recycling method |
-
2017
- 2017-01-04 CN CN201710005041.3A patent/CN106834721A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093117A (en) * | 1993-04-01 | 1994-10-05 | 北京科技大学 | The recovery method of the flue dust of iron content, manganese, zinc, lead and other elements |
| CN101092664A (en) * | 2007-06-28 | 2007-12-26 | 南京钢铁联合有限公司 | Method for processing dust with zinc of electric furnace |
| CN103896324A (en) * | 2014-03-19 | 2014-07-02 | 江苏科技大学 | Method for preparing nano-zinc oxide by utilizing blast furnace dust |
| CN105039724A (en) * | 2015-08-13 | 2015-11-11 | 张弘 | Smelting furnace soot treatment method |
| CN105087947A (en) * | 2015-09-16 | 2015-11-25 | 武汉钢铁(集团)公司 | Method for extracting zinc from blast furnace gas mud |
| CN105331823A (en) * | 2015-12-15 | 2016-02-17 | 安仁县永昌贵金属有限公司 | Lead waste residue recycling method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460327A (en) * | 2017-07-28 | 2017-12-12 | 重庆科技学院 | A kind of comprehensive reutilization method of the leaded zinc powder dirt of electric furnace steel making |
| CN107460327B (en) * | 2017-07-28 | 2019-10-29 | 重庆科技学院 | A kind of comprehensive reutilization method of the leaded zinc powder dirt of electric furnace steel making |
| CN107460328A (en) * | 2017-07-31 | 2017-12-12 | 重庆科技学院 | A kind of method that lead and zinc are refined from the tutty of steel-making dust recovery |
| CN108977661A (en) * | 2018-09-10 | 2018-12-11 | 中国恩菲工程技术有限公司 | The extraction system of the Zn-ef ficiency of low-grade lead zinc ore |
| CN109055776A (en) * | 2018-09-10 | 2018-12-21 | 中国恩菲工程技术有限公司 | The extracting method of Zn-ef ficiency in low-grade lead zinc ore |
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Application publication date: 20170613 |