CN107858503A - It is a kind of to handle the oxygen-enriched method for directly leaching the rich silver-colored iron concentrate of output of normal pressure - Google Patents
It is a kind of to handle the oxygen-enriched method for directly leaching the rich silver-colored iron concentrate of output of normal pressure Download PDFInfo
- Publication number
- CN107858503A CN107858503A CN201711005082.9A CN201711005082A CN107858503A CN 107858503 A CN107858503 A CN 107858503A CN 201711005082 A CN201711005082 A CN 201711005082A CN 107858503 A CN107858503 A CN 107858503A
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- China
- Prior art keywords
- silver
- leaching
- iron concentrate
- zinc
- output
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- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
- C22B1/10—Roasting processes in fluidised form
-
- 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
-
- 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
- C22B19/20—Obtaining zinc otherwise than 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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
-
- 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)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The oxygen-enriched method for directly leaching the rich silver-colored iron concentrate of output of normal pressure is handled the present invention relates to a kind of, is comprised the following steps：Iron concentrate is well mixed by volume with zinc concentrate, form compound, above-mentioned compound is dried, it is then delivered in fluidized bed furnace and carries out fluosolids roasting, send the calcining of output to leaching, silver-colored flotation circuit recovery zinc, silver, the present invention has effectively reclaimed valuable metal silver, zinc in iron concentrate, and improves flue gas SO2Concentration, increase sulphuric acid output, reduce production cost, reduce the occupation of capital and land seizure.
Description
Technical field
The oxygen-enriched method for directly leaching the rich silver-colored sulphur slag of output of normal pressure is handled the present invention relates to a kind of.
Background technology
Iron concentrate originates from the oxygen-enriched directly leaching flotation circuit of normal pressure, is the sulfur granules that zinc sulphide is aoxidized by ferric iron, chemistry
React for ZnS+ Fe2(SO4)3→ZnSO4 +2 FeSO4+S。
In Zinc Hydrometallurgy Process, the high iron concentrate of the oxygen-enriched directly leaching-out technique output of normal pressure, contain elemental sulfur and valuable
The elements such as metallic zinc, silver, at present without treating method well in world wide, this takes to business capital, place heap has
Considerable influence, while there is also very big safety and environmental risk.The method for handling iron concentrate at present is mainly high warm filter, added
Thermal distillation purification processes reclaim valuable metal and directly burning processing recovery sulphur and the aspect of valuable metal two, but high warm filter method with
The methods of heating sublimation Recovered sulphur, high energy consumption, efficiency is low, and cost is high.
The content of the invention
It is an object of the invention to provide the method that iron concentrate is leached in a kind of straight leaching of low-temperature bake processing, Sulfur-Vapor of Lower Temperature is not influenceed
Change the technology controlling and process of roasting, do not cause the secondary pollution of environment, while reclaim valuable metal.
To achieve the above object, technical solution of the invention is：Add in zinc hydrometallurgy low-temperature bake blending process
Enter certain proportion iron concentrate, then carry out low-temperature bake, it is characterised in that comprise the following steps：
A, by iron concentrate and zinc concentrate by volume 1:8~10 ratios carry out dispensing and are well mixed, and form compound；
B, above-mentioned compound is dried, is then delivered in fluidized bed furnace and carries out fluosolids roasting；
C, leaching, silver-colored flotation circuit is sent to reclaim zinc, silver the calcining of step B outputs；
D, caused high-temperature flue gas in step B roasting process is reclaimed into sulphur heel row after residual heat boiler for exchanging heat through dust separation
It is put into air；
E, flue dust caused by step B roasting process is delivered into leaching process together with calcining.
Preferably, it is a kind of to handle the oxygen-enriched method for directly leaching the rich silver-colored iron concentrate of output of normal pressure, comprise the following steps：
A, by iron concentrate and zinc concentrate by volume 1:9 ratios carry out dispensing and are well mixed, and form compound；
B, above-mentioned compound is dried, is then delivered to 42m2Fluosolids roasting, wherein fluidized bed furnace technological parameter are carried out in fluidized bed furnace
For：At 850 DEG C~870 DEG C, electricity gathers dust inlet temperature temperature control：250 DEG C~270 DEG C, air quantity：14000Nm3/h ~
16000Nm3/ h, furnace gas export negative pressure：- 10~0Pa, furnace pressure：14~16kpa；
C, the calcining of step B outputs is sent to the valuable metals such as the processes such as leaching, silver-colored flotation recovery zinc, silver；
D, by caused high-temperature flue gas in step B roasting process after residual heat boiler for exchanging heat through dust separation reclaim sulphur after discharge
To air；
E, flue dust caused by step B roasting process is delivered into leaching process together with calcining.
The beneficial effects of the invention are as follows：1st, mix and effectively improve flue gas SO after burning iron concentrate2Concentration, increase sulphuric acid output, drop
Low production cost；2nd, valuable metal silver, zinc etc. in iron concentrate are reclaimed；3rd, the occupation of capital and land seizure are reduced, prevents soil dirt
Dye.
Embodiment
Embodiment 1
A, by rich silver-colored iron concentrate（Sulfur-bearing 69.72%, zinc 6.05%, silver 0.0291%）And zinc concentrate（Containing zinc 48.5%, sulphur 30.12%,
Silver 0.0150%）, by volume 1:9 carry out mix, compound（Containing zinc 46.3%, sulphur 32.09%, silver 0.0157%）Through drying
After send boiling roaster.
Iron concentrate composition
| Composition | Pb | Fe | S | Ag | Cu | Zn |
| Accounting | 2.66 | 5.44 | 69.72 | 0.0291 | 0.23 | 6.05 |
Compound composition
| Composition | Pb | Fe | S | Ag | Cu | Zn |
| Accounting | 1.68 | 8.56 | 32.09 | 0.0157 | 0.73 | 46.3 |
B, above-mentioned compound is dried, is then delivered to 42m2Fluosolids roasting, wherein fluidized bed furnace technological parameter are carried out in fluidized bed furnace
For：At 850 DEG C~870 DEG C, electricity gathers dust inlet temperature temperature control：250 DEG C~270 DEG C, air quantity：14000Nm3/h ~
16000Nm3/ h, furnace gas export negative pressure：- 10~0Pa, furnace pressure：14~16kpa；
C, the calcining of step B outputs is sent to the valuable metals such as the processes such as leaching, silver-colored flotation recovery zinc, silver；
D, by caused high-temperature flue gas in step B roasting process after residual heat boiler for exchanging heat through dust separation reclaim sulphur after discharge
To air；
E, flue dust caused by step B roasting process is delivered into leaching process together with calcining.
Embodiment 2
It is a kind of to handle the oxygen-enriched method for directly leaching the rich silver-colored iron concentrate of output of normal pressure, comprise the following steps：
A, by rich silver-colored iron concentrate（Sulfur-bearing 65.26%, zinc 5.93%, silver 0.0296%）And zinc concentrate（Containing zinc 47.8%, sulphur 29.53%,
Silver 0.0153%）, by volume 1:10 are uniformly mixed, and form compound.
B, above-mentioned compound is dried, is then delivered in fluidized bed furnace and carries out fluosolids roasting, wherein fluidized bed furnace technological parameter
For：At 850 DEG C~870 DEG C, electricity gathers dust inlet temperature temperature control：250 DEG C~270 DEG C, air quantity：14000Nm3/h ~
16000Nm3/ h, furnace gas export negative pressure：- 10~0Pa, furnace pressure：14~16kpa；
C, the calcining of step B outputs is sent to the valuable metals such as the processes such as leaching, silver-colored flotation recovery zinc, silver；
D, by caused high-temperature flue gas in step B roasting process after residual heat boiler for exchanging heat through dust separation reclaim sulphur after discharge
To air；
E, flue dust caused by step B roasting process is delivered into leaching process together with calcining.
It is described be only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
All any modification, equivalent and improvement made within principle etc., should be included in the scope of the protection.
Claims (2)
1. a kind of handle the oxygen-enriched method for directly leaching the rich silver-colored iron concentrate of output of normal pressure, it is characterised in that comprises the following steps：
A, by iron concentrate and zinc concentrate by volume 1:8~10 ratios carry out dispensing and are well mixed, and form compound；
B, above-mentioned compound is dried, is then delivered in fluidized bed furnace and carries out fluosolids roasting；
C, leaching, silver-colored flotation circuit is sent to reclaim zinc, silver the calcining of step B outputs；
D, caused high-temperature flue gas in step B roasting process is reclaimed into sulphur heel row after residual heat boiler for exchanging heat through dust separation
It is put into air；
E, flue dust caused by step B roasting process is delivered into leaching process together with calcining.
2. a kind of method for handling the oxygen-enriched rich silver-colored iron concentrate of directly leaching output of normal pressure according to claim 1, its feature
It is, comprises the following steps：
A, by iron concentrate and zinc concentrate by volume 1:9 ratios carry out dispensing and are well mixed, and form compound；
B, above-mentioned compound is dried, is then delivered to 42m2Fluosolids roasting, wherein fluidized bed furnace technological parameter are carried out in fluidized bed furnace
For：At 850 DEG C~870 DEG C, electricity gathers dust inlet temperature temperature control：250 DEG C~270 DEG C, air quantity：14000Nm3/h ~
16000Nm3/ h, furnace gas export negative pressure：- 10~0Pa, furnace pressure：14~16kpa；
C, the calcining of step B outputs is sent to the valuable metals such as the processes such as leaching, silver-colored flotation recovery zinc, silver；
D, by caused high-temperature flue gas in step B roasting process after residual heat boiler for exchanging heat through dust separation reclaim sulphur after discharge
To air；
E, flue dust caused by step B roasting process is delivered into leaching process together with calcining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711005082.9A CN107858503A (en) | 2017-10-25 | 2017-10-25 | It is a kind of to handle the oxygen-enriched method for directly leaching the rich silver-colored iron concentrate of output of normal pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711005082.9A CN107858503A (en) | 2017-10-25 | 2017-10-25 | It is a kind of to handle the oxygen-enriched method for directly leaching the rich silver-colored iron concentrate of output of normal pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107858503A true CN107858503A (en) | 2018-03-30 |
Family
ID=61697285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711005082.9A Pending CN107858503A (en) | 2017-10-25 | 2017-10-25 | It is a kind of to handle the oxygen-enriched method for directly leaching the rich silver-colored iron concentrate of output of normal pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107858503A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102876888A (en) * | 2012-10-18 | 2013-01-16 | 广西华锡集团股份有限公司 | Zinc hydrometallurgy production process |
| CN104773712A (en) * | 2015-03-31 | 2015-07-15 | 云南永昌铅锌股份有限公司 | Method for preparing sulfuric acid |
-
2017
- 2017-10-25 CN CN201711005082.9A patent/CN107858503A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102876888A (en) * | 2012-10-18 | 2013-01-16 | 广西华锡集团股份有限公司 | Zinc hydrometallurgy production process |
| CN104773712A (en) * | 2015-03-31 | 2015-07-15 | 云南永昌铅锌股份有限公司 | Method for preparing sulfuric acid |
Non-Patent Citations (1)
| Title |
|---|
| 王立川: "从锌精矿中回收银、金等金属的较佳方案探讨", 《湖南冶金》 * |
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