CN110029232A - A kind of method of low-grade lead Zinc oxide resource utilization - Google Patents
A kind of method of low-grade lead Zinc oxide resource utilization Download PDFInfo
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- CN110029232A CN110029232A CN201910358117.XA CN201910358117A CN110029232A CN 110029232 A CN110029232 A CN 110029232A CN 201910358117 A CN201910358117 A CN 201910358117A CN 110029232 A CN110029232 A CN 110029232A
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- zinc oxide
- lead zinc
- tailing
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
-
- 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
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- 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
-
- 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
-
- 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
-
- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a kind of methods of low-grade lead Zinc oxide resource utilization, belong to the comprehensive utilization of resources field of lead Zinc oxide, specific process step are as follows: low-grade lead Zinc oxide is crushed after ball milling and carries out bulk flotation, selects lead and zinc concentrate and flotation tailing；Flotation tailing is subjected to magnetic separation again, tailing iron content is selected to 3%~5%, output iron ore concentrate and magnetic tailing；Reducing agent, lime stone, the shale of magnetic tailing supplying fine grinding are uniformly mixed and pelletize, and the reduction volatilization of lead zinc is carried out in rotary kiln, obtain oxidation Pb-Zn dust by dust collecting system；Kiln slag enters cement kiln and is calcined, and obtains clinker.The synchronous extraction for realizing low-grade lead Zinc oxide valuable metal of the present invention with and the kiln slag that volatilizees resource utilization, flotation, magnetic separation obtain lead and zinc bulk concentrate and iron ore concentrate, the enrichment of lead zinc, which becomes, contains Pb-Zn dust, raw material as lead zinc metallurgy, reduction volatilization kiln slag calcining production cement, no waste residue output.
Description
Technical field
The invention belongs to the comprehensive utilization of resources fields of lead Zinc oxide, specifically, are related to a kind of low-grade lead zinc oxygen
Change the method that ore resources utilize.
Background technique
With continuous soaring, the good zn Mineral resource of the high-grade constantly exhaustion of China's zinc volume of metal consumption.I
State's zinc oxide Resource management is abundant, but lean ore is more, and rich ore is few, it is difficult to handle.For low grade oxidation ore due to mineral species
Class is more, and ore structures are complicated, and the component of association is unstable, adulterates association each other, therefore for low-grade zinc oxide using routine
The post-processing that ore-dressing technique be enriched with does not have economic feasibility.Low-grade lead zinc resource comprehensive utilization mainly have pyrogenic process and
Wet processing etc., in low-grade zinc oxide ore can also a certain amount of lead resource of association, from improve resource utilization efficiency angle,
Lead zinc need to consider synchronous recycling.
Low-grade lead-zinc wet processing method is more.It is soaked by ammonia, then converts zinc using the method for ammonia still process
Zinc hydroxide adds ammonium carbonate to be converted into basic zinc carbonate, and calcining obtains zinc oxide, can also obtain metallic zinc with electrodeposition.With pyrogenic process
Technique, which is compared, has the advantages that low energy consumption, and cost is few, reduction CO2 emission.But lead cannot be leached and be recycled, furthermore soak
It slags tap to be not added and environmentally friendly hidden danger will be become with resource utilization.Existing fire reduction low-grade lead zinc ore recycles lead zinc, needs to disappear
The lead zinc metal values for consuming a large amount of fuel, but volatilizing can not make up cost of material value.
Dump leaching is also one of low-grade zinc oxide ore processing method, and the leaching or dump leaching of low-grade zinc oxide ore are leached
Zn content is not high in liquid, generally in 10 ~ 50g/L.For the solution relatively low containing zinc concentration, zinc salt or metallic zinc no matter are produced,
It will need a large amount of energy consumption.Therefore a kind of method that the solution relatively low for zinc concentration must select effective Zn accumulation.At present
Relatively effective method is extraction, and process flow is longer.The leached mud of dump leaching output is also to belong to dangerous waste slag.
Summary of the invention
In order to solve the problems, such as background technique, the present invention provides a kind of low-grade lead Zinc oxide recycling benefits
Method, synchronizes the resource utilization of the extraction and slag that realize low-grade lead Zinc oxide valuable metal, the enrichment of lead zinc at
For the raw material of lead zinc metallurgy, the enrichment of association iron becomes the iron ore concentrate of resourcebility, reducing slag hot material direct production of cement, and the energy obtains
To compared with good utilisation, integrated artistic cost is reduced, no waste residue output, clean and effective, valuable metal comprehensive recovery are high.
To achieve the above object, the present invention is achieved through the following technical solutions:
A kind of method of low-grade lead Zinc oxide resource utilization specifically includes the following steps:
1) low-grade lead Zinc oxide being crushed ball milling, ratio of the granularity less than 74 μm is greater than 80%, then carries out bulk flotation,
Select lead and zinc concentrate and tailing；
2) tailing of step 1) is subjected to ferromagnetic choosing, tailing iron content is selected to 3%~5%, selects Fe2O3As iron ore concentrate；
3) the iron magnetic tailing of step 2 is uniformly mixed and is pelletized with the reducing agent of fine grinding, lime stone, shale, mixed material adds
Enter rotary kiln and carry out reduction volatilization, high-temperature region calcination temperature controls 800 DEG C~1300 DEG C, and the flue gas for collecting volatilization obtains lead oxide
Zn dust；
4) reduced blast furnace of step 3) institute output is sent into cement kiln and carries out high-temperature calcination, obtain clinker.
Further, the low-grade lead Zinc oxide be one of grey lithotype oxide ore, sandrock-type oxide ore or
The mixed material that two kinds of person.
Further, the sandrock-type oxide ore ingredient are as follows: Pb 0.5%~2%, Zn 5%~15%, the wherein total zinc of ZnS Zhan
30%~50%, Fe 4%~8%, SiO240%~60%, Al2O3 1%~3%, CaO 4%~8%, MgO < 0.5%.
Further, the grey lithotype oxide ore ingredient are as follows: Pb 0.5%~2%, Zn 5%~15%, the wherein total zinc of ZnS Zhan
10%~30%, Fe 10%~15%, SiO220%~30%；Al2O3 1%~3%, CaO 10%~20%, MgO < 0.5%.
Preferably, reducing agent is coal in step 3), tailing and coal press the mixing of 1:0.05~0.2 in mass ratio.
Preferably, calcination temperature is 1450~1550 DEG C in step 4), the waste heat from tail gas of output can be used as step 3) heat
Source.
Beneficial effects of the present invention:
1, the deficiencies of high the present invention overcomes the independent reduction volatilization low-grade lead Zinc oxide energy consumption cost of existing thermal process, real
Existing lead zinc volatilization is synchronous with manufacture of cement to be carried out, and by the heat source of the high-temperature calcination waste heat supplement reduction volatilization of cement, reduces lead
Zinc resource recycles energy consumption, reduces production cost.
2, the synthetical recovery of the valuable metals such as lead, zinc, iron in low-grade lead Zinc oxide can be achieved in the present invention, and reducing slag is straight
It delivers a child and produces cement, no waste residue output, clean and effective, valuable metal comprehensive recovery are high.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
Embodiment 1
A kind of method of low-grade lead Zinc oxide resource utilization, the specific steps are as follows:
1) sandrock-type oxide ore carries out bulk flotation, material composition are as follows: Pb 0.95%, Zn 6.28%(wherein ZnS Zn content
The total zinc of 2.63%, Zhan is than 41.88%), Fe 5.73%, SiO244.18%；Al2O3 2.01%, CaO 5.45%, MgO 0.29%；Ore dressing
It is 81.7% that tailing ZnS Zn content, which is 0.48%, ZnS recovery rate in ore-dressing, later, and it is 55.1% that flotation, which vulcanizes lead and zinc concentrate Pb+Zn,；
2) raw material iron content is lower than 5.73%, and bulk flotation tailing carries out ferromagnetic choosing, tailing iron content 3.58% after magnetic separation, magnetic separation output
Iron ore concentrate iron content be 62.1%, as iron ore concentrate sell；
3) magnetic tailing is uniformly mixed and pelletizes by weight 1:0.2:1.8:0.4 with anthracite, lime stone, shale, will mix
Material is fed with the speed of 50t/h to rotary kiln, and high-temperature region calcination temperature is controlled at 1250 DEG C, and volatilization Pb-Zn dust passes through cloth bag
Dust-precipitator is collected, flue dust Zn content 48.2%, Pb content 6.4%, and the volatility of Pb+Zn 54.6%, Pb+Zn is up to 90.8%；
4) reducing slag that will volatilize rotary kiln discharge is sent to cement burning rotary kiln, and 650 DEG C of reducing slag temperature or so, in water
1450 DEG C or so calcining output clinkers in mud calcining kiln kiln.
Embodiment 2
A kind of method of low-grade lead Zinc oxide resource utilization, the specific steps are as follows:
1) grey lithotype oxide ore carries out bulk flotation, material composition are as follows: Pb 1.02%, Zn 7.83%(wherein ZnS Zn content
The total zinc of 1.56%, Zhan is than 19.92%), Fe 12.35%, SiO225.66%；Al2O3 1.78%, CaO 15.79%, MgO 0.3%；Choosing
It is 73.7% that tailing ZnS Zn content, which is 0.41%, ZnS recovery rate in ore-dressing, after mine, and lead and zinc concentrate Pb+Zn content is 51.9%；
2) raw material iron content is 12.35%, and bulk flotation tailing carries out ferromagnetic choosing, and iron magnetic tailing iron content is 3.8%, selects output
Iron ore concentrate iron content is 62%, is sold as iron ore concentrate；
3) magnetic tailing is uniformly mixed and pelletizes by weight 1:0.1:0.8:0.2 with anthracite, lime stone, shale, will mix
Material is fed with the speed of 50t/h to rotary kiln, and high-temperature region calcination temperature is controlled at 1150 DEG C, and volatilization Pb-Zn dust passes through cloth bag
Dust-precipitator is collected, flue dust Zn content 42.2%, Pb content 8.3%, and the volatility of Pb+Zn 50.5%, Pb+Zn is up to 91.5%；
4) reducing slag that will volatilize rotary kiln discharge is delivered to cement burning rotary kiln, reducing slag temperature 630 by chute
DEG C or so, 1500 DEG C or so the calcining output clinkers in cement burning kiln.
Embodiment 3
A kind of method of low-grade lead Zinc oxide resource utilization, the specific steps are as follows:
1) sandrock-type oxide ore and grey lithotype oxide ore are subjected to mixing, mixed material ingredient are as follows: 0.93%, Zn 6.85% by 1:1
(wherein ZnS Zn content 1.88%, the total zinc of Zhan is than 27.44%), Fe 8.52%, SiO232.63%；Al2O3 2.21%, CaO
12.41%, MgO 0.4%；It is 83.5% that tailing ZnS Zn content, which is 0.31%, ZnS recovery rate in ore-dressing, after ore dressing, vulcanized lead zinc essence
Mine Pb+Zn content is 53.6%；
2) raw material iron content is 8.52%, and bulk flotation tailing carries out ferromagnetic choosing, and iron magnetic tailing iron content is 3.2%, selects output
Iron ore concentrate iron content is 65.4%, is sold as iron ore concentrate；
3) magnetic tailing is uniformly mixed and pelletizes by weight 1:0.15:1.1:0.2 with anthracite, lime stone, shale, will mix
Material is fed with the speed of 50t/h to rotary kiln, and high-temperature region calcination temperature is controlled at 1150 DEG C, and volatilization Pb-Zn dust passes through cloth bag
Dust-precipitator is collected, flue dust Zn content 43.5%, Pb content 7.4%, and the volatility of Pb+Zn 50.9%, Pb+Zn is up to 92.4%；
4) reducing slag that will volatilize rotary kiln discharge is delivered to cement burning rotary kiln, reducing slag temperature 650 by chute
DEG C or so, in 1550 DEG C of cement burning kiln or so calcining output clinkers.
The present invention synchronizes the resource utilization of the extraction and slag that realize low-grade lead Zinc oxide valuable metal, and lead zinc is rich
It is integrated into the raw material of lead zinc metallurgy, the enrichment of association iron becomes the iron ore concentrate of resourcebility, reducing slag hot material direct production of cement, energy
Source obtains reducing integrated artistic cost, no waste residue output, clean and effective, valuable metal comprehensive recovery are high compared with good utilisation.
Finally, it is stated that preferred embodiment above is only used to illustrate the technical scheme of the present invention rather than limits, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be
Various changes are made to it in form and in details, without departing from defined by claims of the present invention.
Claims (6)
1. a kind of method of low-grade lead Zinc oxide resource utilization, it is characterised in that: specific steps are as follows:
1) low-grade lead Zinc oxide being crushed ball milling, ratio of the granularity less than 74 μm is greater than 80%, then carries out bulk flotation,
Select lead and zinc concentrate and tailing；
2) tailing of step 1) is subjected to ferromagnetic choosing, tailing iron content is selected to 3%~5%, selects Fe2O3As iron ore concentrate；
3) the iron magnetic tailing of step 2 is uniformly mixed and is pelletized with the reducing agent of fine grinding, lime stone, shale, mixed material adds
Enter rotary kiln and carry out reduction volatilization, high-temperature region calcination temperature controls 800 DEG C~1300 DEG C, and the flue gas for collecting volatilization obtains lead oxide
Zn dust；
4) reduced blast furnace of step 3) institute output is sent into cement kiln and carries out high-temperature calcination, obtain clinker.
2. a kind of method of low-grade lead Zinc oxide resource utilization according to claim 1, it is characterised in that: described
Low-grade lead Zinc oxide be one of grey lithotype oxide ore, sandrock-type oxide ore or two kinds mixed material.
3. a kind of method of low-grade lead Zinc oxide resource utilization according to claim 2, it is characterised in that: described
Sandrock-type oxide ore ingredient are as follows: Pb 0.5%~2%, Zn 5%~15%, wherein 30%~50%, the Fe 4%~8% of the total zinc of ZnS Zhan,
SiO240%~60%, Al2O3 1%~3%, CaO 4%~8%, MgO < 0.5%.
4. a kind of method of low-grade lead Zinc oxide resource utilization according to claim 2, it is characterised in that: described
Grey lithotype oxide ore ingredient are as follows: Pb 0.5%~2%, Zn 5%~15%, wherein 10%~30%, the Fe 10% of the total zinc of ZnS Zhan~
15%, SiO220%~30%；Al2O3 1%~3%, CaO 10%~20%, MgO < 0.5%.
5. a kind of method of low-grade lead Zinc oxide resource utilization according to claim 2, it is characterised in that: step
3) in, reducing agent is coal, and tailing and coal press the mixing of 1:0.05~0.2 in mass ratio.
6. a kind of method of low-grade lead Zinc oxide resource utilization according to claim 2, it is characterised in that: step
4) calcination temperature is 1450~1550 DEG C in, and the waste heat from tail gas of output can be used as step 3) heat source.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111850289A (en) * | 2020-07-28 | 2020-10-30 | 昆明冶金研究院有限公司 | Method for harmless treatment of wet-process zinc smelting slag through low-energy curing |
| CN112226624A (en) * | 2020-10-22 | 2021-01-15 | 矿冶科技集团有限公司 | Method for co-processing copper slag and zinc slag |
| CN113061734A (en) * | 2021-03-29 | 2021-07-02 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for recovering zinc, indium and lead in blast furnace cloth bag ash |
| CN113546754A (en) * | 2021-07-23 | 2021-10-26 | 昆明冶金研究院有限公司 | Process for comprehensively utilizing oxygen-sulfur mixed lead-zinc ore |
| CN116103491A (en) * | 2022-12-23 | 2023-05-12 | 中国恩菲工程技术有限公司 | Method for extracting valuable metals from low-grade lead-zinc smelting slag |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111850289A (en) * | 2020-07-28 | 2020-10-30 | 昆明冶金研究院有限公司 | Method for harmless treatment of wet-process zinc smelting slag through low-energy curing |
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| CN113546754A (en) * | 2021-07-23 | 2021-10-26 | 昆明冶金研究院有限公司 | Process for comprehensively utilizing oxygen-sulfur mixed lead-zinc ore |
| CN113546754B (en) * | 2021-07-23 | 2022-10-11 | 昆明冶金研究院有限公司 | Process for comprehensively utilizing oxygen-sulfur mixed lead-zinc ore |
| CN116103491A (en) * | 2022-12-23 | 2023-05-12 | 中国恩菲工程技术有限公司 | Method for extracting valuable metals from low-grade lead-zinc smelting slag |
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