CN108754164A - A method of zinc being recycled from ferrous acid zinc resource using ore phase reconstruction method - Google Patents
A method of zinc being recycled from ferrous acid zinc resource using ore phase reconstruction method Download PDFInfo
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- CN108754164A CN108754164A CN201810879356.5A CN201810879356A CN108754164A CN 108754164 A CN108754164 A CN 108754164A CN 201810879356 A CN201810879356 A CN 201810879356A CN 108754164 A CN108754164 A CN 108754164A
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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
- C22B7/001—Dry processes
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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
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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
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/30—Obtaining zinc or zinc oxide from metallic residues or scraps
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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
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/34—Obtaining zinc oxide
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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
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/12—Dry methods smelting of sulfides or formation of mattes by gases
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- 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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Abstract
The invention discloses a kind of methods recycling zinc from ferrous acid zinc resource using ore phase reconstruction method, belong to technical field of mineral processing, include the following steps：(1) raw ore is subjected to break process, obtains the ferrous acid zinc resource of predetermined fineness；(2) calcification agent is added into ferrous acid zinc resource, pelletizes after mixing well, mixture is subjected to calcification baking under oxidizing atmosphere, so that zinc ferrite is carried out ore phase reconstruction, is converted into zinc oxide and dicalcium ferrite, obtains calcification baking product；(3) calcification baking product is subjected to reduction roasting, so that the dicalcium ferrite in calcification baking product is restored and be converted into magnetic iron ore, obtains reduction roasting product；(4) reduction roasting product is subjected to break process, is detached by magnetic separation, obtains zinc oxide ore and magnetic iron ore.The present invention makes ferrous acid zinc resource carry out ore phase reconstruction by calcification baking, is converted into zinc oxide, is easy to follow-up zinc-iron separation, and the calcification agent of use is cheap and easy to get, and reaction rate is fast, and the rate of recovery of zinc is high after magnetic separation separation.
Description
Technical field
The invention belongs to technical field of mineral processing, and in particular to a kind of to be returned from ferrous acid zinc resource using ore phase reconstruction method
The method for receiving zinc.
Background technology
Zinc is important strategic basic material, and application is very extensive, with the quickening of China's modernization construction, zinc product
Demand increasingly increase, the primary raw material of zinc abstraction is zinc sulfide ore at present, and reserves increasingly reduce, and limits the hair of Zn Cr coating
Exhibition.It is to solve the zinc effective way that there is lack of raw materials to recycle zinc oxide ore and secondary zinc resource, and secondary zinc resource includes mainly
Dust of Iron And Steel Works, zinc leaching residue and lead and zinc smelting dreg, about 5,000,000 tons of the zinc leaching residue that China generates every year, but utilization rate is not
To 5%.Iron and steel enterprise generates about 100,000,000 tons of dust every year, and utilization rate, less than 20%, these dust contain a large amount of zinc-iron resource
But can not effective recycling, cause the serious wasting of resources and environmental pollution, therefore, recycle secondary zinc resource to solution
Certainly there is lack of raw materials and environmental protection is of great significance for China's Zn Cr coating.
Ferrous acid zinc resource is important secondary zinc resource, and yield is big, Zn content is high, and mainly object containing zinc is mutually zinc ferrite,
Zinc ferrite structure is sufficiently stable, it is difficult to be destroyed, it at present can not effective recycling.Dust of Iron And Steel Works processing method includes at present
Wet-leaching, pyrometallurgical smelting and wet method-pyrogenic process process integration etc., be to recycle based on the zinc resource in zinc oxide,
It is bad to the zinc resource recovering effect in zinc ferrite object phase.Wet-leaching includes mainly the acid-hatching of young eggs and alkaline leaching, and the acid-hatching of young eggs needs
High temperature peracid condition could obtain higher zinc leaching rate, and leach zinc-iron simultaneously, cause subsequently to sink iron process complexity, zinc it is total
The rate of recovery is low.Method includes mainly two kinds of NaOH highly basic lixiviation process and ammonia lixiviation process when alkali soaks, and compared with the acid-hatching of young eggs, alkaline leaching has
Good Selectively leaching characteristic, especially ammonia leaching process, but it is low to be used for zinc leaching rate when dregs containing zinc resource.Fire reduction method
It needs to rely on reduction coal or Jiaozhuo to be reducing agent and fuel, zinc is recycled by the method that high temperature reduction volatilizees.In processing zinc ferrite
When resource, reduction volatilization temperature is than the reduction temperature higher of conventional oxidation zinc resource, reduction difficulty bigger, energy consumption higher, economy
Difference.Up to the present, there are no the clean and effectives developed suitable for recycling zinc in ferrous acid zinc resource to utilize method.
Invention content
The purpose of the present invention is to provide a kind of zinc recovery height, the utilization ore phase reconstructions that production cost is low, environmentally protective
The method that method recycles zinc from ferrous acid zinc resource.
The present invention provides a kind of method recycling zinc from ferrous acid zinc resource using ore phase reconstruction method, includes the following steps：
(1) raw ore is subjected to break process, obtains the ferrous acid zinc resource of predetermined fineness；
(2) calcification agent is added into ferrous acid zinc resource obtained by step (1), pelletizes after mixing well, mixture is being aoxidized
Calcification baking is carried out under atmosphere, zinc ferrite is made to carry out ore phase reconstruction, is converted into zinc oxide and dicalcium ferrite, calcification is obtained after cooling
Product of roasting；
(3) calcification baking product obtained by step (2) is subjected to reduction roasting, makes dicalcium ferrite in calcification baking product also
Original is converted into magnetic iron ore, obtains reduction roasting product；
(4) reduction roasting product obtained by step (3) is subjected to break process, is detached by magnetic separation, obtain zinc oxide ore and
Magnetic iron ore.
Preferably, the calcification agent is one or more in calcium carbonate, calcium oxide or calcium hydroxide.
Preferably, effective CaO content and the molar ratio of zinc ferrite are (2.0~2.4) in the calcification agent：1.
Preferably, in the step (1), by fineness after crushing raw ore to -1.0mm.
Preferably, in the step (2), the grain size (D of mixture90) it is 3.0~20mm.
Preferably, the calcification baking carries out in rotary kiln or sintering machine, and calcination temperature is 1230~1280 DEG C, roasting
Time is 5~15min.
Preferably, the calcification baking product uses natural cooling or water quenching cooling.
Preferably, in the step (3), the reducing gas in reduction roasting is CO, P (CO)/P (CO+N2)=40~
50%.
Preferably, in the step (3), reduction roasting temperature is 800~900 DEG C, and roasting time is 90~120min.
Preferably, in the step (4), the broken fineness of control reduction roasting product to -1.0mm.
Preferably, in the step (4), magnetic field intensity is 0.1~0.4T in magnetic separation separation.
Preferably, the raw ore is one or more in Dust of Iron And Steel Works, zinc leaching residue and lead and zinc smelting dreg, master
It is zinc ferrite to want object mutually.
The present invention extracts zinc using ferrous acid zinc resource as raw material, using calcification baking-reduction roasting-magnetic method, compared to iron
Sour zinc, zinc oxide structures are simple, are easily handled, and the present invention is roasted by the calcification agent of excessive addition under oxidizing atmosphere,
It converts the zinc ferrite of stable structure to zinc oxide and dicalcium ferrite, then dicalcium ferrite is restored using reducing roasting process and is converted
For magnetic iron ore, finally magnetic method is used to separate and recover zinc oxide, to realize the high efficiente callback zinc resource from ferrous acid zinc resource, this
It is as follows to invent the chemical reaction related generally to：
ZnFe2O4+2CaCO3=ZnO+Ca2Fe2O5+2CO2↑
3Ca2Fe2O5+ CO=6CaO+2Fe3O4+CO2↑
Compared with prior art, advantageous effects of the invention：
(1) method of the present invention for being recycled zinc from ferrous acid zinc resource using ore phase reconstruction method, is made by calcification baking
Ferrous acid zinc resource carries out ore phase reconstruction, is converted into zinc oxide, and size of microcrystal is larger, is easy to follow-up zinc-iron separation, the calcium of use
Agent is cheap and easy to get, compared with pyrogenic process carbonizing reduction, is not required to addition coke or reduction coal as reducing agent, and reaction rate is fast,
The rate of recovery of zinc reaches 90% or more after magnetic separation separation.
(2) method of the present invention for recycling zinc from ferrous acid zinc resource using ore phase reconstruction method, reduction roasting can be by iron
Sour two calcium reductions are converted to magnetic iron ore, and changing effect is good, and further crystal grain are promoted to grow up, and the separating obtained magnetic product of magnetic separation is
Iron ore concentrate, as iron-smelting raw material, non-magnetic product is zinc oxide, as zinc metallurgy raw material, to realize steel plant's zinc-containing dust
Clean and effective utilize, process energy consumption is low, environmentally protective.
Description of the drawings
Fig. 1 is a kind of process flow chart recycling zinc from ferrous acid zinc resource using ore phase reconstruction method of the present invention.
Specific implementation mode
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, rather than whole embodiments, based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
Embodiment 1
Certain steel plant's zinc-containing dust (TZn 5.67%, ZnFe2O455.72%), by crushing raw ore to -1mm, carbonic acid is added
Calcium, it is 2.4 to control effective CaO content and the molar ratio of zinc ferrite in calcium carbonate：1, the small of 3~20mm is granulation into after mixing well
Mixture is placed in rotary kiln and carries out calcification baking by ball, and calcination temperature is 1230 DEG C, and roasting time 15min roasts calcification
It burns product and is placed in P (CO)/P (CO+N2Carry out reduction roasting in the reducing atmosphere of)=40%, calcination temperature is 800 DEG C, when roasting
Between be 90min, reduction roasting product is cooled down, -1mm is crushed to, zinc-iron separation is carried out using magnetic method, magnetic field intensity is
0.2T, zinc recovery is 95.31% in magnetic tailing.
Embodiment 2
Certain steel plant's zinc-containing dust (TZn 5.67%, ZnFe2O455.72%), by crushing raw ore to -1mm, oxidation is added
Calcium, the molar ratio for controlling effective CaO content and zinc ferrite is 2.2：1, it is granulation into the bead of 3~20mm after mixing well, will mix
It closes and expects to be placed in rotary kiln to carry out calcification baking, calcination temperature is 1250 DEG C, roasting time 10min, by calcification baking product
It is placed in P (CO)/P (CO+N2Reduction roasting is carried out in the reducing atmosphere of)=40%, calcination temperature is 850 DEG C, and roasting time is
Reduction roasting product is cooled down, is crushed to -1mm by 90min, and zinc-iron separation, magnetic field intensity 0.2T, magnetic are carried out using magnetic method
It is 96.87% to select zinc recovery in tailing.
Embodiment 3
Certain steel plant's zinc-containing dust (TZn 5.67%, ZnFe2O455.72%), by crushing raw ore to -1mm, hydrogen-oxygen is added
Change calcium, it is 2.0 to control effective CaO content and the molar ratio of zinc ferrite in calcium hydroxide：1, it is granulation into 3~20mm after mixing well
Bead, mixture is placed in rotary kiln and carries out calcification baking, calcination temperature be 1280 DEG C, roasting time 5min, by calcium
Change product of roasting and is placed in P (CO)/P (CO+N2Reduction roasting is carried out in the reducing atmosphere of)=45%, calcination temperature is 850 DEG C, roasting
The burning time is 90min, and reduction roasting product is cooled down, -1mm is crushed to, and carries out zinc-iron separation using magnetic method, magnetic field intensity is
0.2T, zinc recovery is 96.06% in magnetic tailing.
Comparative example 1
Certain steel plant's zinc-containing dust (TZn 5.67%, ZnFe2O455.72%), by crushing raw ore to -1mm, it is placed in P
(CO)/P(CO+N2Reduction roasting is carried out in the reducing atmosphere of)=40%, calcination temperature is 800 DEG C, roasting time 90min,
Reduction roasting product is cooled down, -1mm is crushed to, zinc-iron separation, magnetic field intensity 0.2T, magnetic tailing are carried out using magnetic method
Middle zinc recovery is 14.82%.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example.To those of ordinary skill in the art, obtained improvement and change in the case where not departing from the technology of the present invention concept thereof
It changes and also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of method recycling zinc from ferrous acid zinc resource using ore phase reconstruction method, which is characterized in that include the following steps：
(1) raw ore is subjected to break process, obtains the ferrous acid zinc resource of predetermined fineness；
(2) calcification agent is added into ferrous acid zinc resource obtained by step (1), pelletizes after mixing well, by mixture in oxidizing atmosphere
Lower carry out calcification baking makes zinc ferrite carry out ore phase reconstruction, is converted into zinc oxide and dicalcium ferrite, calcification baking is obtained after cooling
Product；
(3) calcification baking product obtained by step (2) is subjected to reduction roasting, so that the dicalcium ferrite in calcification baking product is restored and turns
Magnetic iron ore is turned to, reduction roasting product is obtained；
(4) reduction roasting product obtained by step (3) is subjected to break process, is detached by magnetic separation, obtains zinc oxide ore and magnet
Mine.
2. the method for utilizing ore phase reconstruction method to recycle zinc from ferrous acid zinc resource according to claim 1, which is characterized in that institute
It is one or more in calcium carbonate, calcium oxide or calcium hydroxide to state calcification agent.
3. the method according to claim 1 or claim 2 for being recycled zinc from ferrous acid zinc resource using ore phase reconstruction method, feature are existed
In effective CaO content and the molar ratio of zinc ferrite are (2.0~2.4) in the calcification agent：1.
4. the method for utilizing ore phase reconstruction method to recycle zinc from ferrous acid zinc resource according to claim 1, which is characterized in that institute
It states in step (1), by fineness after crushing raw ore to -1.0mm.
5. the method for utilizing ore phase reconstruction method to recycle zinc from ferrous acid zinc resource according to claim 1, which is characterized in that institute
It states in step (2), the grain size (D of mixture90) it is 3.0~20mm.
6. the method for utilizing ore phase reconstruction method to recycle zinc from ferrous acid zinc resource according to claim 1, which is characterized in that institute
It states calcification baking to carry out in rotary kiln or sintering machine, calcination temperature is 1230~1280 DEG C, and roasting time is 5~15min.
7. the method for utilizing ore phase reconstruction method to recycle zinc from ferrous acid zinc resource according to claim 1, which is characterized in that institute
It states in step (3), the reducing gas in reduction roasting is CO, P (CO)/P (CO+N2)=40~50%.
8. according to the method for recycling zinc from ferrous acid zinc resource using ore phase reconstruction method of claim 1 or 7, feature exists
In in the step (3), reduction roasting temperature is 800~900 DEG C, and roasting time is 90~120min.
9. the method for utilizing ore phase reconstruction method to recycle zinc from ferrous acid zinc resource according to claim 1, which is characterized in that institute
It states in step (4), magnetic field intensity is 0.1~0.4T in magnetic separation separation.
10. zinc is recycled from ferrous acid zinc resource using ore phase reconstruction method according to claim 1,2,4~7, any one of 9 is described
Method, which is characterized in that the raw ore be Dust of Iron And Steel Works, zinc leaching residue and lead and zinc smelting dreg in it is one or more,
Main object is mutually zinc ferrite.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863219A (en) * | 2019-12-04 | 2020-03-06 | 北京环丁环保大数据研究院 | Method for resource utilization of zinc-containing converter dust and sludge |
| CN113373318A (en) * | 2021-05-31 | 2021-09-10 | 张家港江苏科技大学产业技术研究院 | High-alkalinity furnace charge for strengthening zinc recovery from zinc-containing electric furnace dust and method for recovering zinc by using high-alkalinity furnace charge |
| CN113912131A (en) * | 2021-10-11 | 2022-01-11 | 中南大学 | Zinc ferrite treatment method |
| CN115627360A (en) * | 2022-10-31 | 2023-01-20 | 西安建筑科技大学 | Method for preparing high-purity nano zinc powder from arc furnace dust |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0474526A (en) * | 1990-07-13 | 1992-03-09 | Youyuu Tansanengata Nenryo Denchi Hatsuden Syst Gijutsu Kenkyu Kumiai | Desulfurizing agent for high temperature reductive gas and preparation thereof |
| KR19980033470A (en) * | 1998-04-16 | 1998-07-25 | 구용회 | Selective Separation of Fe Component from Heavy Metal Mixed Solution Using Coal Fly Ash |
| CN103540765A (en) * | 2013-10-12 | 2014-01-29 | 中南大学 | Zinc smelting technology |
| CN104451126A (en) * | 2014-12-05 | 2015-03-25 | 中南大学 | Method for intensifying selective decomposition of zinc ferrite |
-
2018
- 2018-08-03 CN CN201810879356.5A patent/CN108754164B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0474526A (en) * | 1990-07-13 | 1992-03-09 | Youyuu Tansanengata Nenryo Denchi Hatsuden Syst Gijutsu Kenkyu Kumiai | Desulfurizing agent for high temperature reductive gas and preparation thereof |
| KR19980033470A (en) * | 1998-04-16 | 1998-07-25 | 구용회 | Selective Separation of Fe Component from Heavy Metal Mixed Solution Using Coal Fly Ash |
| CN103540765A (en) * | 2013-10-12 | 2014-01-29 | 中南大学 | Zinc smelting technology |
| CN104451126A (en) * | 2014-12-05 | 2015-03-25 | 中南大学 | Method for intensifying selective decomposition of zinc ferrite |
Non-Patent Citations (2)
| Title |
|---|
| 谭宇佳等: "含锌电炉粉尘处理工艺现状及发展", 《矿产综合利用》 * |
| 闫缓等: "高铁锌焙砂还原焙烧_酸性浸出选择性分离铁锌研究", 《安全与环境学报》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863219A (en) * | 2019-12-04 | 2020-03-06 | 北京环丁环保大数据研究院 | Method for resource utilization of zinc-containing converter dust and sludge |
| CN110863219B (en) * | 2019-12-04 | 2021-04-16 | 北京环丁环保大数据研究院 | Method for resource utilization of zinc-containing converter dust and sludge |
| CN113373318A (en) * | 2021-05-31 | 2021-09-10 | 张家港江苏科技大学产业技术研究院 | High-alkalinity furnace charge for strengthening zinc recovery from zinc-containing electric furnace dust and method for recovering zinc by using high-alkalinity furnace charge |
| CN113912131A (en) * | 2021-10-11 | 2022-01-11 | 中南大学 | Zinc ferrite treatment method |
| CN113912131B (en) * | 2021-10-11 | 2022-07-12 | 中南大学 | Zinc ferrite treatment method |
| CN115627360A (en) * | 2022-10-31 | 2023-01-20 | 西安建筑科技大学 | Method for preparing high-purity nano zinc powder from arc furnace dust |
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