CN101341265A - Separation of metal values in zinc leaching residues - Google Patents
Separation of metal values in zinc leaching residues Download PDFInfo
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- CN101341265A CN101341265A CNA2006800209006A CN200680020900A CN101341265A CN 101341265 A CN101341265 A CN 101341265A CN A2006800209006 A CNA2006800209006 A CN A2006800209006A CN 200680020900 A CN200680020900 A CN 200680020900A CN 101341265 A CN101341265 A CN 101341265A
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- residue
- described method
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- 239000011701 zinc Substances 0.000 title claims abstract description 42
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 16
- 238000002386 leaching Methods 0.000 title claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 13
- 239000002184 metal Substances 0.000 title claims abstract description 13
- 238000000926 separation method Methods 0.000 title abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 25
- 230000002829 reductive effect Effects 0.000 claims abstract description 11
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 150000002739 metals Chemical class 0.000 claims abstract 2
- 239000004484 Briquette Substances 0.000 claims description 11
- 239000003500 flue dust Substances 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 5
- 239000008188 pellet Substances 0.000 claims description 4
- 230000002378 acidificating effect Effects 0.000 claims description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 2
- 238000005453 pelletization Methods 0.000 claims description 2
- 239000002253 acid Substances 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000007935 neutral effect Effects 0.000 abstract description 2
- 239000003517 fume Substances 0.000 abstract 2
- 230000003068 static effect Effects 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 23
- 239000000203 mixture Substances 0.000 description 10
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical group [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 239000012535 impurity Substances 0.000 description 5
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 4
- 238000001354 calcination Methods 0.000 description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 229910052745 lead Inorganic materials 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 3
- 229910001308 Zinc ferrite Inorganic materials 0.000 description 3
- 229910052785 arsenic Inorganic materials 0.000 description 3
- 239000000571 coke Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 229910052602 gypsum Inorganic materials 0.000 description 3
- 239000010440 gypsum Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- WGEATSXPYVGFCC-UHFFFAOYSA-N zinc ferrite Chemical compound O=[Zn].O=[Fe]O[Fe]=O WGEATSXPYVGFCC-UHFFFAOYSA-N 0.000 description 3
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 3
- 229960001763 zinc sulfate Drugs 0.000 description 3
- 229910000368 zinc sulfate Inorganic materials 0.000 description 3
- 241000209456 Plumbago Species 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005363 electrowinning Methods 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- PIJPYDMVFNTHIP-UHFFFAOYSA-L lead sulfate Chemical compound [PbH4+2].[O-]S([O-])(=O)=O PIJPYDMVFNTHIP-UHFFFAOYSA-L 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052716 thallium Inorganic materials 0.000 description 2
- 239000005083 Zinc sulfide Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910052728 basic metal Inorganic materials 0.000 description 1
- 150000003818 basic metals Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052935 jarosite Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229960001866 silicon dioxide Drugs 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate group Chemical group S(=O)(=O)([O-])[O-] QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
-
- 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
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/16—Dry methods smelting of sulfides or formation of mattes with volatilisation or condensation of the metal being produced
-
- 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
- C22B7/001—Dry processes
- C22B7/002—Dry processes by treating with halogens, sulfur or compounds thereof; by carburising, by treating with hydrogen (hydriding)
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
- Manufacture Of Iron (AREA)
Abstract
The invention relates to the separation of metals in Fe-bearing zinc leaching residues, in particular neutral and weak acid leach residues. The process comprises the steps of: preparing agglomerates containing, besides the Zn leaching residue, at least 5 wt% of carbon and 2 to 10 wt% of S; fuming said agglomerates in a static bed at a temperature above 1250 DEG C, thereby producing a reduced Fe-bearing phase and Zn-bearing fumes; and extracting said Zn-bearing fumes. The high S content of the feed allows for a relatively high operating temperature without production of molten phases. This guarantees fast reduction and fuming kinetics, and permits the use of a compact technology such as a static bed furnace.
Description
Technical field
The present invention relates in the zinc leaching residues that carries iron, particularly leach separating metal in the residue in neutrality and weak acid.
Background technology
Zink sulphide is impure ZnS ore deposit, is the main raw material of producing Zn.Common industrial implementation comprises the oxidizing roasting step, produces ZnO with the vitriol of impurity or the ZnO of oxide compound.In subsequent step, by under neutrallty condition or solutions of weak acidity, leaching, the ZnO in the incinerating zink sulphide is incorporated in the solution, thereby produces the residue of Zn dilution, be called neutral residue and the weak acid leaching residue of leaching in this manual.These residues contain 2～10 weight %S usually, reach Zn, 35 weight %Fe, 7 weight %Pb and the 7 weight %SiO of 30 weight %
2
But, during calcining, the exemplary impurity Fe reaction that exists in part Zn and the zink sulphide, and form insoluble relatively ferrous acid zinc.Therefore, except that lead sulfate, calcium sulfate and other impurity, leach the Zn that residue contains quite big fractional wustite form.According to this enforcement, reclaim Zn from wustite and need use 50～200g/l H
2SO
4High acid concentration carry out specific hydrometallurgy residue treatment.The shortcoming of this acidic treatment is, except that Zn, dissolves nearly all Fe and also has other impurity such as As, Cu, Cd, Ni, Co, Tl, Sb.Because even these elements of lower concentration also disturb the follow-up electrowinning of Zn, so they must be removed from solution of zinc sulfate.Although Cu, Cd, Co, Ni and Tl can be by adding Zn powder precipitation, Fe is discarded as rhombohedral iron ore, jarosite or pyrrhosiderite by hydrolysis usually.Because the danger of washout of heavy metals, thus these years Fe residue must dispose at the landfill yard of well-controlled.But these residue landfills are subjected to serious environmental pressure, and the sustainability of this method can be queried.Another shortcoming of above-mentioned processing is to carry metal in the residue of Fe such as the loss of In, Ge, Ag and Zn.
The alternative processing of the residue of load iron hydrochlorate uses the Waelz rotary kiln to be applied in some factories, produces slag and the flue dust that contains Zn and Pb.This process prescription is at Iron and steelEngineer vol.73, No.4 is in the G.Strohmeier of 87-90 page or leaf and J.Bonestell " Steelworks residues and the Waelz kiln treatment of electric arc furnacedust ".In the Waelz rotary kiln, zinc enters with wustite and sulphate form, vaporization after the CO reduction that produces with combustion of coke.Iron at kiln is reduced in the reaction zone of metal, and the superheated problem usually takes place.In these cases, the charging fusing in the kiln also forms furnace accretion, and this mainly is to be about 1180 ℃ eutectic 2FeO.SiO2-FeO owing to form fusing point.The dissolving of FeO has further reduced fusing point, and by with in stage early by the combination of zinc sulfate reductive zinc sulphide, form the solid duricrust.Forming of the big ball that forms mutually as molten metal under about 1150 ℃, be made up of iron carbide further hindered the stove rotation.This causes the ZnO that formed by the reductive zinc ferrite and the reduction reduction of ferric oxide once more in the early stage of this stove.Superheated has been quickened the loss of lining brick in the kiln.In order to limit the danger of heating, by with CaO/SiO
2Than the value that is set at 0.8～1.8, must monitor the CaO/SiO in the materials closely
2Ratio.
Although described many Zn fuming methods,, document in recent years concentrates in the processing of the Fe secondary residues that contains Zn such as EAF dust.In this respect, the Waelz rotary kiln is very suitable, but its productivity still is subjected to the obstruction to superheated susceptibility.
A kind of method of separating and reclaim non-ferrous metal from the residue of zinc supported is disclosed in WO 2005-005674.This method comprises the steps: to make residue to experience direct reduction step, extracts the flue dust of load Zn and Pb, with the oxidizing semlting of the experience mutually step that makes the loaded metal Fe that obtains.Directly reduction is carried out in multiple hearth furnace, operates in the reduction zone under 1100 ℃.Using a shortcoming of such reduction furnace is that reduction kinetics is subjected to temperature limitation.But, in multiple hearth furnace, can not reach the temperature more than 1100 ℃.
JP 2004-107748 described a kind of in rotary hearth furnace up under 1250 ℃ the reduction temperature, handle the method for zinc leaching residues.The burner air ratio is set in the restricted portion.
At US 5,906, in 671, Zn factory leaches residue after the alkaline earth of aluminum oxide and silicon-dioxide and basic metal mixture and reductive agent are assembled, in rotary kiln up to handling under 1150 ℃ the temperature.
At US 5,667, in 553, in the mode identical with the EAF dust, the neutrality of thermal treatment zinc electrowinning leaches residue by-products in reduction furnace.
Summary of the invention
The separation method that the purpose of this invention is to provide the metal that contains in the zinc leaching residues of a kind of year Fe, this method does not have above-mentioned shortcoming.This method comprises the steps:
Preparation also contains the aggregate of at least 5 weight % carbon and 2～10 weight %S except that Zn leaches residue;
In fixed bed under the temperature more than 1250 ℃ the described aggregate of fuming, carry Fe mutually and carry the flue dust of Zn thereby produce reductive; With
Extract the flue dust of described year Zn.
Before the preparation aggregate, should preferably Zn be leached residue and be dried to less than 12 weight %H
2O or even less than 5 weight %H
2The water content of O.
Carbon content is less than 15 weight % in the preference aggregation body, and same, the CaO equivalent is less than 10 weight % or even less than 15 weight %.
Represent that with the quality pellet strength intensity of pelletizing should be preferably 5kg or even 10kg at least.This mode has been avoided dust to carry and prevented the fusion of charging better under high processing temperature.
Fuming should advantageously be carried out under at least 1300 ℃ temperature in containing the atmosphere of carbon monoxide.
This method is ideally suited handles neutrality or slightly acidic Zn leaching residue.
Method of the present invention can be carried out in rotary hearth furnace; Can choose wantonly and then carry out fusing and the oxide treatment that reductive carries the Fe phase.
Therefore, the component that may need to carry S is added in the residue, so that make the scope that its total S content reaches to be needed.Gypsum is typical additive in this case.Also can estimate to use the carbon source of rich S in this case.
As shown in the following examples, the high S content of materials can allow high relatively service temperature and not produce the fusion phase.Therefore, do not form the danger of furnace accretion at the discharge outlet of stove.High temperature has been guaranteed fast restore and fuming kinetics, and this allows to use compact type technology such as bed furnace.Such stove has kept the integrity of aggregate more, significantly avoided the generation of dust and limited flue dust with after stain.
Embodiment 1
The following example has illustrated the separation of the different non-ferrous metal that contains in the zink sulphide of calcining and leaching subsequently.
Will be mainly by zinc ferrite (ZnO.Fe
2O
3), lead sulfate (PbSO
4), calcium sulfate (CaSO
4), zinc sulfate (ZnSO
4) and picture CaO, SiO
2, MgO, Al
2O
3, Cu
2About 1000g weak acid leaching (WAL) residue that the impurity of O, SnO is formed is dried to and is lower than 5 weight %H
2The water content of O mixes with the CaO of 15 weight % or the gypsum of equivalent and the PET coke of 25 weight % purity＞85%C.This mixture passes through between 2 hydraulic rolls at 20kN/cm
2Pressure extrusion under it is compressed into briquette, produce the hard coal cake of light, have the quality pellet strength of 20kg.
In induction furnace, carry out the fuming step, to simulate the process that in rotary hearth furnace, takes place.Use has the Indutherm MU-3000 stove of peak power 15kW and 2000Hz frequency.The stove interior diameter is 180mm, and the plumbago crucible that carries briquette has the internal diameter of 140mm.
In the mode of crucible surface covering monolayer material, about 400g briquette is placed on the plumbago crucible bottom of cleaning.Then crucible is placed in the induction furnace, between briquette, installs and do not touch the detection thermopair of crucible bottom.Cover crucible with refractory slab.The metal of secondary combustion fuming above crucible is captured in the strainer with the form of cigarette ash.
As measuring with the Pt/PtRh10 thermopair that is installed between the briquette, reactor and material are heated to 1300 ℃.Until 600 ℃, heating is at the protection N of 200l/h gas flow rate
2Carry out under the atmosphere.From 600 ℃ to 1300 ℃, CO is injected crucible with the 200l/h flow velocity.
After reaching 1300 ℃, take out sample after 30 minutes.These samples are at liquid N
2Middle cancellation stops institute and responds and freezing these mineral.In table 1, provide the composition of materials and product.The element of product distributes and is presented in the table 2.
Table 1: the composition of materials and product
Table 2: the element of product distributes
Test-results clearly illustrates that after calcining 30 minutes, Zn, Pb and In go out from the briquette fuming effectively, and Fe, Cu, As and F are concentrated in the reductive residue.From handle the angle of flue dust subsequently with Wet-process metallurgy method, meaningful especially to the good selectivity of As and F.
Embodiment 2
This embodiment has illustrated the keying action of S in the briquette, because it is not losing under the selectivity, has avoided the softening and fusing of material during calcination process.
Use comprises and has 5 weight %SiO
2The synthetic of zinc ferrite do not have S zinc leaching residues and two kinds of mixtures of following ingredients preparation:
15 weight %CaO and 25 weight % levigated coke (mixture 1);
36.7 weight % gypsum and 25 weight % levigated coke (mixture 2).
Two kinds of mixtures are pressed into briquette, according to the program fuming of embodiment 1.
The briquette of corresponding mixture 1 only contains the 0.3 weight %S that has an appointment, and fusing occurs, and expression has formed picture 2FeO.SiO
2Low fusing phase.But the briquette of corresponding mixture 2 contains the 6.5 weight %S that have an appointment, and is indebted to the S that has q.s and the formation that does not show any such phase.
Claims (10)
1. the method for a separating valuable metals in the zinc leaching residues that carries Fe comprises the steps:
Preparation also contains the aggregate of at least 5 weight % carbon and 2～10 weight %S except that Zn leaches residue;
The described aggregate of fuming under the temperature in fixed bed more than 1250 ℃, thus the flue dust that reductive carries the Fe phase and carries Zn produced; With
Extract the flue dust of described year Zn.
2. the method for claim 1 further comprises step: before the step of preparation aggregate, Zn is leached residue be dried to less than 12 weight %H
2O is also preferably less than 5 weight %H
2The water content of O.
3. method as claimed in claim 1 or 2 is characterised in that described aggregate comprises the carbon less than 15 weight %.
4. as each described method in the claim 1～3, be characterised in that described aggregate further comprises the Ca compound, thereby described compound provides the CaO equivalent of at least 10 weight % and preferred at least 15 weight % in described aggregate.
5. as each described method in the claim 1～4, be characterised in that described aggregate is to have the pelletizing of 5kg quality pellet strength at least, and preferably have the briquette of 10kg quality pellet strength at least.
6. as each described method in the claim 1～5, be characterised in that described fuming temperature is at least 1300 ℃.
7. as each described method in the claim 1～6, be characterised in that described fuming carries out in containing the atmosphere of carbon monoxide.
8. as each described method in the claim 1～7, be characterised in that it is that neutrality or slightly acidic Zn leach residue that described Zn leaches residue.
9. as each described method in the claim 1～8, be characterised in that described fuming step carries out in rotary hearth furnace.
10. as each described method in the claim 1～9, further comprise making reductive carry the step that Fe experiences the oxidizing semlting step mutually.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP0507637.5 | 2005-06-13 | ||
| EP05076375 | 2005-06-13 | ||
| US75007705P | 2005-12-14 | 2005-12-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101341265A true CN101341265A (en) | 2009-01-07 |
Family
ID=35240857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800209006A Pending CN101341265A (en) | 2005-06-13 | 2006-05-11 | Separation of metal values in zinc leaching residues |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US20080196551A1 (en) |
| EP (1) | EP1893779A1 (en) |
| JP (1) | JP2008545888A (en) |
| KR (1) | KR20080022545A (en) |
| CN (1) | CN101341265A (en) |
| AU (1) | AU2006257458A1 (en) |
| BR (1) | BRPI0612150A2 (en) |
| CA (1) | CA2611925A1 (en) |
| EA (1) | EA013690B1 (en) |
| MX (1) | MX2007015812A (en) |
| NO (1) | NO20080042L (en) |
| PE (1) | PE20070088A1 (en) |
| WO (1) | WO2006133777A1 (en) |
| ZA (1) | ZA200710377B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103103344A (en) * | 2013-03-01 | 2013-05-15 | 中南大学 | Dressing-smelting combined treatment method for sulfate-containing lead-zinc smelting slags |
| CN106119535A (en) * | 2016-08-01 | 2016-11-16 | 江苏省冶金设计院有限公司 | Process the method and system of zinc leaching residue |
| CN106148682A (en) * | 2016-08-01 | 2016-11-23 | 江苏省冶金设计院有限公司 | Process the method and system of zinc leaching residue |
| CN106399702A (en) * | 2016-09-27 | 2017-02-15 | 江苏省冶金设计院有限公司 | Technology for recycling nonferrous metals in process of treating lead-zinc slag through rotary hearth furnace |
| CN106929667A (en) * | 2017-03-13 | 2017-07-07 | 江苏省冶金设计院有限公司 | A kind of method for processing zinc leaching residue |
| CN107254586A (en) * | 2017-06-20 | 2017-10-17 | 西部矿业股份有限公司 | A kind of processing method of oxygen leaching mine tailings |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979684B (en) * | 2010-12-01 | 2012-02-29 | 中南大学 | A process for recovering zinc from hot-dip galvanizing dust |
| RU2626371C1 (en) * | 2016-09-05 | 2017-07-26 | Общество с ограниченной ответственностью "Урал - рециклинг" | Method of processing metallurgical production waste |
| CN114540628B (en) * | 2022-01-20 | 2023-11-14 | 云南云铜锌业股份有限公司 | Method for treating zinc-impregnated slag, zinc smelting gypsum slag and blast furnace gas ash |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4605435A (en) * | 1985-01-31 | 1986-08-12 | Amax Inc. | Recycling of steel plant dusts to steel furnaces |
| WO1988001654A1 (en) * | 1986-08-27 | 1988-03-10 | Commonwealth Scientific And Industrial Research Or | Process for the treatment of lead-zinc ores, concentrates or residues |
| US5538532A (en) * | 1995-03-02 | 1996-07-23 | Complete Recovery Process | Methods for recycling electric arc furnace dust |
| US5906671A (en) * | 1996-10-25 | 1999-05-25 | Agglo Inc. | Method for extraction of metals and non-metals from minerals, industrial by-products and waste materials |
| KR100327848B1 (en) * | 1996-11-11 | 2002-08-19 | 스미토모 긴조쿠 고교 가부시키가이샤 | Manufacturing method and apparatus of reduced iron |
| EP1199373A1 (en) * | 2000-10-17 | 2002-04-24 | Universite Catholique De Louvain | Agglomerates of and process for the treatment of metallurgical dust |
| ES2323763T3 (en) * | 2000-10-30 | 2009-07-24 | Nippon Steel Corporation | UNTREATED GRANULES CONTAINING METAL OXIDES FOR REDUCING OVEN AND METHOD FOR THEIR PRODUCTION, METHOD FOR REDUCING THEMSELVES. |
| JP2004107748A (en) * | 2002-09-19 | 2004-04-08 | Daido Steel Co Ltd | Method for treating zinc leaching residue |
| KR101084927B1 (en) * | 2003-07-04 | 2011-11-17 | 유미코르 | How to recover nonferrous metals from zinc residues |
-
2006
- 2006-05-11 ZA ZA200710377A patent/ZA200710377B/en unknown
- 2006-05-11 KR KR20077028617A patent/KR20080022545A/en not_active Withdrawn
- 2006-05-11 BR BRPI0612150A patent/BRPI0612150A2/en not_active IP Right Cessation
- 2006-05-11 AU AU2006257458A patent/AU2006257458A1/en not_active Abandoned
- 2006-05-11 CN CNA2006800209006A patent/CN101341265A/en active Pending
- 2006-05-11 CA CA002611925A patent/CA2611925A1/en not_active Abandoned
- 2006-05-11 MX MX2007015812A patent/MX2007015812A/en unknown
- 2006-05-11 WO PCT/EP2006/004412 patent/WO2006133777A1/en active Application Filing
- 2006-05-11 JP JP2008515071A patent/JP2008545888A/en not_active Withdrawn
- 2006-05-11 EP EP06753557A patent/EP1893779A1/en not_active Withdrawn
- 2006-05-11 US US11/917,278 patent/US20080196551A1/en not_active Abandoned
- 2006-05-11 EA EA200800030A patent/EA013690B1/en not_active IP Right Cessation
- 2006-06-08 PE PE2006000634A patent/PE20070088A1/en not_active Application Discontinuation
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2008
- 2008-01-03 NO NO20080042A patent/NO20080042L/en not_active Application Discontinuation
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103103344A (en) * | 2013-03-01 | 2013-05-15 | 中南大学 | Dressing-smelting combined treatment method for sulfate-containing lead-zinc smelting slags |
| CN106119535A (en) * | 2016-08-01 | 2016-11-16 | 江苏省冶金设计院有限公司 | Process the method and system of zinc leaching residue |
| CN106148682A (en) * | 2016-08-01 | 2016-11-23 | 江苏省冶金设计院有限公司 | Process the method and system of zinc leaching residue |
| CN106399702A (en) * | 2016-09-27 | 2017-02-15 | 江苏省冶金设计院有限公司 | Technology for recycling nonferrous metals in process of treating lead-zinc slag through rotary hearth furnace |
| CN106929667A (en) * | 2017-03-13 | 2017-07-07 | 江苏省冶金设计院有限公司 | A kind of method for processing zinc leaching residue |
| CN107254586A (en) * | 2017-06-20 | 2017-10-17 | 西部矿业股份有限公司 | A kind of processing method of oxygen leaching mine tailings |
| CN107254586B (en) * | 2017-06-20 | 2019-05-14 | 西部矿业股份有限公司 | A kind of processing method of oxygen leaching mine tailings |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0612150A2 (en) | 2016-09-06 |
| ZA200710377B (en) | 2009-03-25 |
| MX2007015812A (en) | 2008-04-29 |
| NO20080042L (en) | 2008-01-03 |
| WO2006133777A1 (en) | 2006-12-21 |
| KR20080022545A (en) | 2008-03-11 |
| EP1893779A1 (en) | 2008-03-05 |
| EA200800030A1 (en) | 2008-12-30 |
| CA2611925A1 (en) | 2006-12-21 |
| AU2006257458A1 (en) | 2006-12-21 |
| JP2008545888A (en) | 2008-12-18 |
| PE20070088A1 (en) | 2007-02-02 |
| EA013690B1 (en) | 2010-06-30 |
| US20080196551A1 (en) | 2008-08-21 |
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