JP2020509166A - 硫酸亜鉛溶液から鉄を回収する方法 - Google Patents
硫酸亜鉛溶液から鉄を回収する方法 Download PDFInfo
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 385
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 188
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 title claims abstract description 72
- 229960001763 zinc sulfate Drugs 0.000 title claims abstract description 71
- 229910000368 zinc sulfate Inorganic materials 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 claims abstract description 107
- 238000001556 precipitation Methods 0.000 claims abstract description 83
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 239000011701 zinc Substances 0.000 claims abstract description 60
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 57
- 230000003750 conditioning effect Effects 0.000 claims abstract description 56
- 229910052595 hematite Inorganic materials 0.000 claims abstract description 55
- 239000011019 hematite Substances 0.000 claims abstract description 55
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 claims abstract description 55
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 30
- 230000033116 oxidation-reduction process Effects 0.000 claims abstract description 24
- 238000002386 leaching Methods 0.000 claims abstract description 15
- 230000001590 oxidative effect Effects 0.000 claims abstract description 12
- 229910021607 Silver chloride Inorganic materials 0.000 claims abstract description 10
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 claims abstract description 10
- 229910052709 silver Inorganic materials 0.000 claims abstract description 4
- 239000004332 silver Substances 0.000 claims abstract description 4
- 230000008569 process Effects 0.000 claims description 78
- 239000007788 liquid Substances 0.000 claims description 32
- 238000006243 chemical reaction Methods 0.000 claims description 30
- 239000003638 chemical reducing agent Substances 0.000 claims description 23
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- 238000006386 neutralization reaction Methods 0.000 claims description 7
- 230000003647 oxidation Effects 0.000 claims description 7
- 238000007254 oxidation reaction Methods 0.000 claims description 7
- 239000002562 thickening agent Substances 0.000 claims description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000000243 solution Substances 0.000 description 96
- 239000002244 precipitate Substances 0.000 description 20
- 239000010949 copper Substances 0.000 description 19
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 14
- 229910052802 copper Inorganic materials 0.000 description 13
- 238000003723 Smelting Methods 0.000 description 12
- 239000012141 concentrate Substances 0.000 description 8
- 229910052598 goethite Inorganic materials 0.000 description 7
- AEIXRCIKZIZYPM-UHFFFAOYSA-M hydroxy(oxo)iron Chemical compound [O][Fe]O AEIXRCIKZIZYPM-UHFFFAOYSA-M 0.000 description 7
- 229940118149 zinc sulfate monohydrate Drugs 0.000 description 7
- RNZCSKGULNFAMC-UHFFFAOYSA-L zinc;hydrogen sulfate;hydroxide Chemical compound O.[Zn+2].[O-]S([O-])(=O)=O RNZCSKGULNFAMC-UHFFFAOYSA-L 0.000 description 7
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 6
- 238000002441 X-ray diffraction Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 239000004568 cement Substances 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004611 spectroscopical analysis Methods 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 150000003751 zinc Chemical class 0.000 description 3
- 229910052934 alunite Inorganic materials 0.000 description 2
- 239000010424 alunite Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000001143 conditioned effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- -1 iron ions Chemical class 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 229910052950 sphalerite Inorganic materials 0.000 description 2
- KPZTWMNLAFDTGF-UHFFFAOYSA-D trialuminum;potassium;hexahydroxide;disulfate Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Al+3].[Al+3].[Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O KPZTWMNLAFDTGF-UHFFFAOYSA-D 0.000 description 2
- 229910052984 zinc sulfide Inorganic materials 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 229910001308 Zinc ferrite Inorganic materials 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 238000002050 diffraction method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012527 feed solution Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 229910052935 jarosite Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 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
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003828 vacuum filtration Methods 0.000 description 1
- WGEATSXPYVGFCC-UHFFFAOYSA-N zinc ferrite Chemical compound O=[Zn].O=[Fe]O[Fe]=O WGEATSXPYVGFCC-UHFFFAOYSA-N 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
Images
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
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G9/00—Compounds of zinc
- C01G9/06—Sulfates
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B15/00—Other processes for the manufacture of iron from iron compounds
-
- 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
- C22B19/22—Obtaining zinc otherwise than by distilling with leaching with acids
-
- 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
- C22B19/26—Refining solutions containing zinc values, e.g. obtained by leaching zinc ores
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/08—Sulfuric acid, other sulfurated acids or salts thereof
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/22—Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- 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
Abstract
Description
実施例1では、それぞれの中和したコンディショニング工程投入液、即ち、硫酸亜鉛浸出液に亜鉛末の投入量を異ならせることにより酸化還元電位(ORP)を調節して製造された硫酸亜鉛溶液を用いて、オートクレーブ内で140℃、7bargの反応条件で酸化還元電位(ORP)値による鉄沈殿反応の効率を確認した。亜鉛末投入時に硫酸亜鉛溶液の酸化還元電位はさらに低くなり、この過程でFe(II)は、さらに安定するようになる。実施例1の鉄沈殿反応は、赤鉄鉱シードを投入しない状態で行われた。
実施例2では、7bargの圧力条件で145g/lの亜鉛を含有した硫酸亜鉛溶液を用いて120℃以上の温度範囲で反応温度による鉄沈殿反応の効率を確認した。実施例2の鉄沈殿反応は、赤鉄鉱シードを投入しない状態で行われた。
還元剤である亜鉛末を用いて酸化還元電位を−400mV(vs. Ag/AgCl)に調節し、亜鉛濃度が145g/lで、鉄濃度は12.4g/lであり、pHが4.5である硫酸亜鉛溶液をオートクレーブに投入した後、145℃の温度条件で酸素を投入して圧力を5〜15bargにそれぞれ調節して2時間の間反応させた後、室温まで冷却した。実施例3の鉄沈殿反応は、赤鉄鉱シードを投入しない状態で行われた。
Claims (14)
- 亜鉛鉱を硫酸に溶解する浸出工程から生成される硫酸亜鉛溶液から鉄を回収する方法において、
前記硫酸亜鉛溶液であるコンディショニング工程投入液を還元する段階を含むコンディショニング工程;及び
前記コンディショニング工程で排出された鉄沈殿工程投入液を加圧酸化する段階を含んで赤鉄鉱として鉄を回収する鉄沈殿工程;を含み、
前記鉄沈殿工程は、135〜150℃の温度及び5〜10bargの圧力で行われる、
硫酸亜鉛溶液から鉄を回収する方法。 - 亜鉛鉱を硫酸に溶解する浸出工程から生成される硫酸亜鉛溶液から鉄を回収する方法において、
前記硫酸亜鉛溶液であるコンディショニング工程投入液を還元する段階を含むコンディショニング工程;及び
前記コンディショニング工程で排出された鉄沈殿工程投入液を加圧酸化する段階を含んで赤鉄鉱として鉄を回収する鉄沈殿工程;を含み、
前記鉄沈殿工程投入液の酸化還元電位は、銀/塩化銀電極を基準電極にしたときに−100mV以下である、
硫酸亜鉛溶液から鉄を回収する方法。 - 前記コンディショニング工程の還元する段階で還元剤を投入し、
前記酸化還元電位は、前記還元剤により調節される、請求項2に記載の硫酸亜鉛溶液から鉄を回収する方法。 - 前記還元剤は、亜鉛末を含む、請求項3に記載の硫酸亜鉛溶液から鉄を回収する方法。
- 前記コンディショニング工程は、前記コンディショニング工程投入液を還元する段階でコンディショニング工程後液を生成し、
前記コンディショニング工程後液をシックナー及びフィルターで処理して、排出された溶液は前記鉄沈殿工程投入液として用い、固形物はコンディショニングケーキとして排出する、請求項1または請求項2に記載の硫酸亜鉛溶液から鉄を回収する方法。 - 前記鉄沈殿工程は、投入された前記鉄沈殿工程投入液を加圧酸化する段階で鉄沈殿工程後液を生成し、
前記鉄沈殿工程後液をシックナー及びフィルターで処理して、排出された溶液は中和工程へ移送し、固形物は酸化鉄として排出する、請求項1または請求項2に記載の硫酸亜鉛溶液から鉄を回収する方法。 - 前記鉄沈殿工程投入液のpHは、3〜5.5である、請求項1または請求項2に記載の硫酸亜鉛溶液から鉄を回収する方法。
- 前記鉄沈殿工程投入液の亜鉛濃度は、120〜150g/lである、請求項1または請求項2に記載の硫酸亜鉛溶液から鉄を回収する方法。
- 前記鉄沈殿工程投入液の鉄濃度は、5〜20g/lである、請求項1または請求項2に記載の硫酸亜鉛溶液から鉄を回収する方法。
- 前記鉄沈殿工程の工程時間は、30分〜3時間である、請求項1または請求項2に記載の硫酸亜鉛溶液から鉄を回収する方法。
- 前記鉄沈殿工程の加圧酸化する段階は、酸素とスチームを投入する、請求項1または請求項2に記載の硫酸亜鉛溶液から鉄を回収する方法。
- 前記加圧酸化する段階は、オートクレーブを用いる、請求項1または請求項2に記載の硫酸亜鉛溶液から鉄を回収する方法。
- 前記加圧酸化する段階は、オートクレーブ設備により行われ、
前記オートクレーブ設備は、
オートクレーブ;
前記オートクレーブから工程液の送液を受けるフラッシュベッセル;
前記フラッシュベッセルで発生したスチームを用いて工程液を加熱するヒーター;
前記工程液の最終反応温度までスチームを用いて熱を交換する熱交換器;を含む、請求項1または請求項2に記載の硫酸亜鉛溶液から鉄を回収する方法。 - 前記フラッシュベッセルは、複数である、請求項13に記載の硫酸亜鉛溶液から鉄を回収する方法。
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KR1020180012953A KR101889680B1 (ko) | 2018-02-01 | 2018-02-01 | 황산아연 용액으로부터 철을 회수하는 방법 |
KR10-2018-0012953 | 2018-02-01 | ||
PCT/KR2018/001452 WO2019132105A1 (ko) | 2018-02-01 | 2018-02-02 | 황산아연 용액으로부터 철을 회수하는 방법 |
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KR (1) | KR101889680B1 (ja) |
CN (1) | CN110352254B (ja) |
AU (1) | AU2018319218B2 (ja) |
BR (1) | BR112019012537B1 (ja) |
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RU (1) | RU2717624C1 (ja) |
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BR112019012537B1 (pt) | 2020-11-10 |
AU2018319218B2 (en) | 2020-07-09 |
JP6799160B2 (ja) | 2020-12-09 |
CN110352254A (zh) | 2019-10-18 |
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EP3719146A4 (en) | 2021-03-31 |
EP3719146B1 (en) | 2023-03-22 |
BR112019012537A2 (pt) | 2019-11-12 |
US11001507B2 (en) | 2021-05-11 |
PE20191342A1 (es) | 2019-09-30 |
FI3719146T3 (fi) | 2023-04-25 |
WO2019132105A1 (ko) | 2019-07-04 |
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TWI741252B (zh) | 2021-10-01 |
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