CN109607622A - A method of iron oxide red product is prepared using the heavy scum of zinc hydrometallurgy hematite process - Google Patents
A method of iron oxide red product is prepared using the heavy scum of zinc hydrometallurgy hematite process Download PDFInfo
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- zinc hydrometallurgy
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- hematite
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- 238000000034 method Methods 0.000 title claims abstract description 111
- 239000011701 zinc Substances 0.000 title claims abstract description 79
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 77
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 239000011019 hematite Substances 0.000 title claims abstract description 60
- 229910052595 hematite Inorganic materials 0.000 title claims abstract description 60
- 238000009854 hydrometallurgy Methods 0.000 title claims abstract description 59
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 title claims abstract description 58
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000012535 impurity Substances 0.000 claims abstract description 27
- 239000002253 acid Substances 0.000 claims abstract description 17
- 230000007935 neutral effect Effects 0.000 claims abstract description 14
- 239000000243 solution Substances 0.000 claims description 47
- 238000005406 washing Methods 0.000 claims description 17
- 239000007787 solid Substances 0.000 claims description 13
- 239000007864 aqueous solution Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 150000002500 ions Chemical class 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 75
- 229910052742 iron Inorganic materials 0.000 abstract description 40
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 8
- -1 iron ion Chemical class 0.000 abstract description 7
- 229910000628 Ferrovanadium Inorganic materials 0.000 abstract description 6
- DQMUQFUTDWISTM-UHFFFAOYSA-N O.[O-2].[Fe+2].[Fe+2].[O-2] Chemical compound O.[O-2].[Fe+2].[Fe+2].[O-2] DQMUQFUTDWISTM-UHFFFAOYSA-N 0.000 abstract description 6
- PNXOJQQRXBVKEX-UHFFFAOYSA-N iron vanadium Chemical compound [V].[Fe] PNXOJQQRXBVKEX-UHFFFAOYSA-N 0.000 abstract description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract description 5
- 150000003839 salts Chemical class 0.000 abstract description 5
- 229910052708 sodium Inorganic materials 0.000 abstract description 5
- 239000011734 sodium Substances 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 239000002893 slag Substances 0.000 description 16
- 229910052738 indium Inorganic materials 0.000 description 12
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 12
- 230000008901 benefit Effects 0.000 description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 5
- 238000003723 Smelting Methods 0.000 description 4
- 229910001308 Zinc ferrite Inorganic materials 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 229910052720 vanadium Inorganic materials 0.000 description 4
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 4
- WGEATSXPYVGFCC-UHFFFAOYSA-N zinc ferrite Chemical compound O=[Zn].O=[Fe]O[Fe]=O WGEATSXPYVGFCC-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 3
- 229910001626 barium chloride Inorganic materials 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 229910052598 goethite Inorganic materials 0.000 description 3
- AEIXRCIKZIZYPM-UHFFFAOYSA-M hydroxy(oxo)iron Chemical compound [O][Fe]O AEIXRCIKZIZYPM-UHFFFAOYSA-M 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001027 hydrothermal synthesis Methods 0.000 description 2
- NJWNEWQMQCGRDO-UHFFFAOYSA-N indium zinc Chemical compound [Zn].[In] NJWNEWQMQCGRDO-UHFFFAOYSA-N 0.000 description 2
- 229910052935 jarosite Inorganic materials 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000010437 gem Substances 0.000 description 1
- 229910001751 gemstone Inorganic materials 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- KFZAUHNPPZCSCR-UHFFFAOYSA-N iron zinc Chemical compound [Fe].[Zn] KFZAUHNPPZCSCR-UHFFFAOYSA-N 0.000 description 1
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000001089 mineralizing effect Effects 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 239000001054 red pigment Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- WGPCGCOKHWGKJJ-UHFFFAOYSA-N sulfanylidenezinc Chemical compound [Zn]=S WGPCGCOKHWGKJJ-UHFFFAOYSA-N 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000009858 zinc metallurgy Methods 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/06—Ferric oxide [Fe2O3]
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a kind of methods for preparing iron oxide red product using the heavy scum of zinc hydrometallurgy hematite process, belong to hydrometallurgy and field of material technology.The heavy scum of zinc hydrometallurgy hematite process is washed with deionized, for removing the sulfate and other salts substances of resolvability in the heavy scum of zinc hydrometallurgy hematite process；The heavy scum of zinc hydrometallurgy hematite process after will be washed is placed in sulfuric acid solution, carry out the removal of impurities of acid solution high temperature hydro-thermal, the impurity such as the subsulfate for removing autunezite, yellow sodium ferrovanadium and zinc, iron etc., while the iron ion that ferrovanadium decomposites is transformed into di-iron trioxide under high temperature and high pressure environment；The heavy scum of zinc hydrometallurgy hematite process after the removal of impurities of acid solution high temperature hydro-thermal is subjected to the removal of impurities of neutral solution high temperature hydro-thermal, obtains iron oxide red product.The higher value application of the recycling of iron and the heavy scum of hematite process in Zinc hydrometallurgy process can be achieved in the present invention.
Description
Technical field
The present invention relates to a kind of methods for preparing iron oxide red product using the heavy scum of zinc hydrometallurgy hematite process, belong to wet process smelting
Gold and field of material technology.
Background technique
Marmatite is in mineralizing process, and iron, indium replace the zinc atom in zincblende with isomorph, using mechanical ore grinding
It is difficult to separate zinc, iron, indium with the method for ore dressing, causes the zinc concentrate iron content of ore dressing output higher, and be associated with high level
The metals such as indium, copper.It in smelting process, is inlayed and is coexisted with zinc due to the iron in zinc concentrate, under conditions of roasting, can not kept away
The a large amount of zinc ferrites of the generation exempted from.Conventional to leach process, zinc ferrite is not destroyed in neutral leaching process, with not dissolved oxidation
Zinc and most iron, indium, copper stay in neutral leaching residue.
In order to destroy zinc ferrite to recycle zinc and indium, need to usually be carried out using rotary kiln evaporation method or hot acid leaching-out technique
Processing.Rotary kiln evaporation method can effectively destroy zinc ferrite, and output zinc oxide and indium oxide return to zinc metallurgy process and recycle zinc indium.So
And rotary kiln evaporation method energy consumption is high, zinc indium recovery is low, and a large amount of copper enter kiln slag, it is difficult to recycle, and volatilization process output is low dense
Degree sulfur dioxide flue gas is difficult to administer.It is a kind of effective ways for destroying zinc ferrite that hot acid, which leaches, and zinc, iron, indium enter molten together
In liquid, and iron is most of with Fe3+Form exists, and leads to iron difficult separation and recycling.Currently, separating the side of iron from this solution
Method is mainly jarosite process, goethite process and hematite process.When separating iron using jarosite process, indium and iron enter Huang together
Then krausite slag uses volatility process recovery indium from iron vitriol slag.Goethite process needs first by the Fe in solution3+It is reduced to Fe2+,
With neutralizing hydrolysis method recovery indium, indium slag is obtained.Liquid continues to be neutralized to pH to be 2.5~4.2 after heavy indium, under the conditions of 85~90 DEG C
Iron is removed using air oxidation, obtains goethite slag.However, above two hot acid leaches, method for removing iron scum iron content is low, and the quantity of slag is big,
Obtained scum can not utilize.Hematite process can effectively raise zinc, indium the rate of recovery, it can be achieved that scum it is innoxious with subtract
Quantization, and the heavy scum iron content of hematite process is high (55 ~ 60wt%), the potential advantages with resource utilization.But due to bloodstone slag
Containing a certain amount of sulphur (2 ~ 5wt%), steel plant can not be sold to as iron-smelting raw material, Japanese Iijima smeltery bloodstone is heavy
Scum is mainly sold to cement plant at present.
With the increasingly raising of environmental requirement and the heavy gradually popularization and application of iron technology at home of hematite process, wet process refining
The resource utilization of the heavy scum of the red iron processes of zinc receives significant attention.The zinc-iron clean and effective separation in realizing Zinc Hydrometallurgy Process
Meanwhile how to realize the resource utilization of scum, especially have the high-valued of the bloodstone slag of resource utilization potential advantages
Utilizing question is worth further investigation.
Iron oxide red, i.e. powdery di-iron trioxide, chemical formula Fe2O3, industrially referred to as iron oxide red, can be used for building, oil
Paint, the coloring of rubber etc. is a kind of inorganic pigment, and shielding is strong；Iron oxide red also serves as catalyst, jewel, the throwing of the products such as glass
Photo etching, or the ferritic material of production, while being widely used in electronics industry.Hematite process sinks scum main component for three oxygen
Change two iron, chemical formula Fe2O3, red subparticle, with the advantage for preparing iron oxide red.
Summary of the invention
It is an object of the invention to the innoxious and resource utilizations for scum in Zinc Hydrometallurgy Process, provide a kind of benefit
The method for preparing iron oxide red product with the heavy scum of zinc hydrometallurgy hematite process.Siderotil etc. in bloodstone slag is carried out structure and broken by the present invention
It is bad, the impurity substances being mingled with will be adsorbed in bloodstone slag and are removed, and the iron ion that dedoping step is separated is converted into three
Two iron are aoxidized, so that ultra-fine iron oxide red pigment is prepared, to realize the recycling of iron and the heavy scum of hematite process in Zinc hydrometallurgy process
Higher value application.The present invention is realized by following steps.
A method of iron oxide red product being prepared using the heavy scum of zinc hydrometallurgy hematite process, is included the following steps:
The heavy scum of zinc hydrometallurgy hematite process is washed with deionized in step 1, for removing the heavy scum of zinc hydrometallurgy hematite process
The sulfate of middle resolvability and other salts substances；
Step 2, scum that the zinc hydrometallurgy hematite process after step 1 washing sinks are placed in sulfuric acid solution, carry out acid solution
The removal of impurities of high temperature hydro-thermal, the impurity such as subsulfate for removing autunezite, yellow sodium ferrovanadium and zinc, iron etc., while by iron
The iron ion that vanadium decomposites transforms into di-iron trioxide under high temperature and high pressure environment；
Step 3, scum that the zinc hydrometallurgy hematite process after the removal of impurities of step 2 acid solution high temperature hydro-thermal sinks carry out neutral solution
The removal of impurities of high temperature hydro-thermal, obtains iron oxide red product.
Step 1 detailed process are as follows: deionized water and zinc hydrometallurgy hematite process sink scum liquid-solid ratio for 3 ~ 5:1ml/
G, wash temperature be 60 DEG C ~ 80 DEG C, countercurrent washing 3 ~ 5 times, each 3 ~ 5min of agitator treating, until can't detect sulphur in cleaning solution
Acid ion.
Step 2 detailed process are as follows: sulfuric acid solution pH value is 1 ~ 3, sulfuric acid solution and the heavy iron of zinc hydrometallurgy hematite process
Slag liquid-solid ratio is 2 ~ 4:1ml/g, and partial pressure of oxygen is 0.2 ~ 0.4Mpa, and temperature is 250 DEG C ~ 300 DEG C, time 3h ~ 5h.
Step 3 detailed process are as follows: neutral solution is aqueous solution, aqueous solution and the heavy scum liquid of zinc hydrometallurgy hematite process
Gu pH value is 5.0 ~ 7.0, and temperature is 150 DEG C ~ 200 DEG C, 2 ~ 4h of time than being 3 ~ 5:1ml/g.
The beneficial effects of the present invention are:
(1) three Duan Zuhe that the present invention is cleaned using washing, the removal of impurities of acid solution high temperature hydro-thermal method, neutral solution high temperature hydro-thermal method
Technique separates the impurity in the heavy scum of zinc hydrometallurgy hematite process, and bloodstone slag is prepared into high-purity iron oxide red, avoids iron
The stockpiling of slag realizes the recycling and higher value application of iron in Zinc hydrometallurgy process.
(2) present invention sinks scum as raw material using the hematite process of zinc hydrometallurgy, is prepared by the processing to bloodstone slag high
Pure iron is red, keeps the application of bloodstone slag more extensive, while avoiding bloodstone slag desulfurization with roasting technique technique, and no sulfur-containing tail gas is real
Show the harmless treatment of zinc smelting dreg and efficiently utilized, improves the environmental benefit of zinc abstraction.
(3) this method is different from traditional method for preparing iron oxide red, and preparation process is operated using Whote-wet method, and no waste produces
Raw, the solution after removal of impurities can be utilized in zinc abstraction system circulation, autoclave operation high degree of automation, technology maturation, operation stream
Journey is simple, and whole process is environmental-friendly.
Specific embodiment
With reference to embodiment, the invention will be further described.
Embodiment 1
The method for preparing iron oxide red product using the heavy scum of zinc hydrometallurgy hematite process, includes the following steps:
Step 1, be washed with deionized 500g zinc hydrometallurgy hematite process sink scum (main component (wt%) are as follows: Fe57.3,
Zn0.54, K0.47, Na0.65, S4.82 etc.), for removing the sulfate of resolvability in the heavy scum of zinc hydrometallurgy hematite process
With other salts substances；Deionized water and the heavy scum liquid-solid ratio of zinc hydrometallurgy hematite process are 3:1ml/g, wash temperature 80
DEG C, countercurrent washing 5 times, each agitator treating 3min, until can't detect sulfate ion in cleaning solution (after the 5th washing
Sulfate radical test agent: barium chloride solution is added in liquid, no White Flocculus is precipitated, and illustrates that washing is complete)；
Step 2, scum that the zinc hydrometallurgy hematite process after step 1 washing sinks are placed in sulfuric acid solution, carry out acid solution
The removal of impurities of high temperature hydro-thermal, the impurity such as subsulfate for removing autunezite, yellow sodium ferrovanadium and zinc, iron etc., while by iron
The iron ion that vanadium decomposites transforms into di-iron trioxide under high temperature and high pressure environment；Sulfuric acid solution pH value be 3, sulfuric acid solution with
Zinc hydrometallurgy hematite process sinks scum liquid-solid ratio for 3:1ml/g, and partial pressure of oxygen 0.4Mpa, temperature is 270 DEG C, time 3h；
Step 3, scum that the zinc hydrometallurgy hematite process after the removal of impurities of step 3 acid solution high temperature hydro-thermal sinks carry out neutral solution
The removal of impurities of high temperature hydro-thermal, obtains iron oxide red product；Wherein neutral solution is aqueous solution, aqueous solution and the heavy scum of zinc hydrometallurgy hematite process
Liquid-solid ratio is 3:1ml/g, and pH value 5.0, temperature is 200 DEG C, time 4h.
It is detected in above-mentioned iron oxide red product, detects its main component (wt%) are as follows: Fe2O395.8, Fe67.3, Zn <
0.01, K0.17, Na0.04, S0.22 etc..
Embodiment 2
The method for preparing iron oxide red product using the heavy scum of zinc hydrometallurgy hematite process, includes the following steps:
Step 1, be washed with deionized 200g zinc hydrometallurgy hematite process sink scum (main component (wt%) are as follows: Fe58.2,
Zn0.49, K0.41, Na0.69, S4.82 etc.), for removing the sulfate of resolvability in the heavy scum of zinc hydrometallurgy hematite process
With other salts substances；Deionized water and the heavy scum liquid-solid ratio of zinc hydrometallurgy hematite process are 5:1ml/g, wash temperature 60
DEG C, countercurrent washing 3 times, each agitator treating 4min, until can't detect sulfate ion in cleaning solution (after the 5th washing
Sulfate radical test agent: barium chloride solution is added in liquid, no White Flocculus is precipitated, and illustrates that washing is complete)；
Step 2, scum that the zinc hydrometallurgy hematite process after step 1 washing sinks are placed in sulfuric acid solution, carry out acid solution
The removal of impurities of high temperature hydro-thermal, the impurity such as subsulfate for removing autunezite, yellow sodium ferrovanadium and zinc, iron etc., while by iron
The iron ion that vanadium decomposites transforms into di-iron trioxide under high temperature and high pressure environment；Sulfuric acid solution pH value be 1, sulfuric acid solution with
Zinc hydrometallurgy hematite process sinks scum liquid-solid ratio for 4:1ml/g, and partial pressure of oxygen 0.2Mpa, temperature is 250 DEG C, time 5h；
Step 3, scum that the zinc hydrometallurgy hematite process after the removal of impurities of step 3 acid solution high temperature hydro-thermal sinks carry out neutral solution
The removal of impurities of high temperature hydro-thermal, obtains iron oxide red product；Wherein neutral solution is aqueous solution, aqueous solution and the heavy scum of zinc hydrometallurgy hematite process
Liquid-solid ratio is 5:1ml/g, and pH value 6.95, temperature is 180 DEG C, time 2h.
It is detected in above-mentioned iron oxide red product, detects its main component (wt%) are as follows: Fe2O396.7, Fe68.1, Zn <
0.01, K0.11, Na0.02, S0.18 etc..
Embodiment 3
The method for preparing iron oxide red product using the heavy scum of zinc hydrometallurgy hematite process, includes the following steps:
Step 1, be washed with deionized 400g zinc hydrometallurgy hematite process sink scum (main component (wt%) are as follows: Fe61.7,
Zn0.31, K0.39, Na0.58, S2.42 etc.), for removing the sulfate of resolvability in the heavy scum of zinc hydrometallurgy hematite process
With other salts substances；Deionized water and the heavy scum liquid-solid ratio of zinc hydrometallurgy hematite process are 4:1ml/g, wash temperature 70
DEG C, countercurrent washing 4 times, each agitator treating 5min, until can't detect sulfate ion in cleaning solution (after the 5th washing
Sulfate radical test agent: barium chloride solution is added in liquid, no White Flocculus is precipitated, and illustrates that washing is complete)；
Step 2, scum that the zinc hydrometallurgy hematite process after step 1 washing sinks are placed in sulfuric acid solution, carry out acid solution
The removal of impurities of high temperature hydro-thermal, the impurity such as subsulfate for removing autunezite, yellow sodium ferrovanadium and zinc, iron etc., while by iron
The iron ion that vanadium decomposites transforms into di-iron trioxide under high temperature and high pressure environment；Sulfuric acid solution pH value is 1.75, and sulfuric acid is molten
Liquid and zinc hydrometallurgy hematite process sink scum liquid-solid ratio for 2:1ml/g, and partial pressure of oxygen 0.3Mpa, temperature is 300 DEG C, time 4h；
Step 3, scum that the zinc hydrometallurgy hematite process after the removal of impurities of step 3 acid solution high temperature hydro-thermal sinks carry out neutral solution
The removal of impurities of high temperature hydro-thermal, obtains iron oxide red product；Wherein neutral solution is aqueous solution, aqueous solution and the heavy scum of zinc hydrometallurgy hematite process
Liquid-solid ratio is 4:1ml/g, and pH value 6.15, temperature is 150 DEG C, time 3h.
It is detected in above-mentioned iron oxide red product, detects its main component (wt%) are as follows: Fe2O396.1, Fe67.6, Zn <
0.01, K0.15, Na0.03, S0.19 etc..
Above the embodiment of the present invention is explained in detail, but the present invention is not limited to above-mentioned embodiment party
Formula can also be made without departing from the purpose of the present invention within the knowledge of a person skilled in the art
Various change out.
Claims (4)
1. a kind of method for preparing iron oxide red product using the heavy scum of zinc hydrometallurgy hematite process, it is characterised in that: including walking as follows
It is rapid:
The heavy scum of zinc hydrometallurgy hematite process is washed with deionized in step 1；
Step 2, scum that the zinc hydrometallurgy hematite process after step 1 washing sinks are placed in sulfuric acid solution, carry out acid solution
The removal of impurities of high temperature hydro-thermal；
Step 3, scum that the zinc hydrometallurgy hematite process after the removal of impurities of step 2 acid solution high temperature hydro-thermal sinks carry out neutral solution
The removal of impurities of high temperature hydro-thermal, obtains iron oxide red product.
2. the method according to claim 1 for preparing iron oxide red product using the heavy scum of zinc hydrometallurgy hematite process, feature
It is: step 1 detailed process are as follows: deionized water and zinc hydrometallurgy hematite process sink scum liquid-solid ratio for 3 ~ 5:1ml/g, wash
Wash temperature be 60 DEG C ~ 80 DEG C, countercurrent washing 3 ~ 5 times, each 3 ~ 5min of agitator treating, until can't detect sulfate radical in cleaning solution
Ion.
3. the method according to claim 1 for preparing iron oxide red product using the heavy scum of zinc hydrometallurgy hematite process, feature
It is: step 2 detailed process are as follows: sulfuric acid solution pH value is 1 ~ 3, sulfuric acid solution and the heavy scum liquid of zinc hydrometallurgy hematite process
Gu partial pressure of oxygen is 0.2 ~ 0.4Mpa, and temperature is 250 DEG C ~ 300 DEG C, time 3h ~ 5h than being 2 ~ 4:1ml/g.
4. the method according to claim 1 for preparing iron oxide red product using the heavy scum of zinc hydrometallurgy hematite process, feature
It is: step 3 detailed process are as follows: neutral solution is aqueous solution, and aqueous solution and the heavy scum liquid of zinc hydrometallurgy hematite process are solid
Than for 3 ~ 5:1ml/g, pH value is 5.0 ~ 7.0, temperature is 150 DEG C ~ 200 DEG C, 2 ~ 4h of time.
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