JP2006522873A - 白金族金属の回収 - Google Patents
白金族金属の回収 Download PDFInfo
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- JP2006522873A JP2006522873A JP2006506457A JP2006506457A JP2006522873A JP 2006522873 A JP2006522873 A JP 2006522873A JP 2006506457 A JP2006506457 A JP 2006506457A JP 2006506457 A JP2006506457 A JP 2006506457A JP 2006522873 A JP2006522873 A JP 2006522873A
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- pgm
- leaching
- base metal
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 15
- 239000002184 metal Substances 0.000 title claims abstract description 15
- 238000011084 recovery Methods 0.000 title claims description 38
- -1 platinum group metals Chemical class 0.000 title abstract description 4
- 239000010953 base metal Substances 0.000 claims abstract description 74
- 238000002386 leaching Methods 0.000 claims abstract description 73
- 238000000034 method Methods 0.000 claims abstract description 59
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000001556 precipitation Methods 0.000 claims abstract description 19
- 239000002244 precipitate Substances 0.000 claims abstract description 15
- 239000012141 concentrate Substances 0.000 claims description 36
- 239000011347 resin Substances 0.000 claims description 28
- 229920005989 resin Polymers 0.000 claims description 28
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 22
- 239000002253 acid Substances 0.000 claims description 18
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims description 13
- 239000003456 ion exchange resin Substances 0.000 claims description 13
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 11
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 150000001450 anions Chemical class 0.000 claims description 4
- 150000001768 cations Chemical class 0.000 claims description 4
- 230000002829 reductive effect Effects 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 2
- 230000001376 precipitating effect Effects 0.000 claims description 2
- 229910052755 nonmetal Inorganic materials 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 42
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 36
- 230000020477 pH reduction Effects 0.000 description 24
- 238000012360 testing method Methods 0.000 description 20
- 238000005342 ion exchange Methods 0.000 description 18
- 229910052802 copper Inorganic materials 0.000 description 16
- 239000010949 copper Substances 0.000 description 16
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 239000010931 gold Substances 0.000 description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 11
- 239000000706 filtrate Substances 0.000 description 11
- 229910052737 gold Inorganic materials 0.000 description 11
- 229910052697 platinum Inorganic materials 0.000 description 11
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 10
- 238000005188 flotation Methods 0.000 description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- 229910052763 palladium Inorganic materials 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 7
- 229910052759 nickel Inorganic materials 0.000 description 7
- 238000000926 separation method Methods 0.000 description 7
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 6
- 229910017052 cobalt Inorganic materials 0.000 description 6
- 239000010941 cobalt Substances 0.000 description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 6
- 230000014759 maintenance of location Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- HYHCSLBZRBJJCH-UHFFFAOYSA-M sodium hydrosulfide Chemical compound [Na+].[SH-] HYHCSLBZRBJJCH-UHFFFAOYSA-M 0.000 description 6
- 238000001354 calcination Methods 0.000 description 5
- 239000003153 chemical reaction reagent Substances 0.000 description 5
- 238000005363 electrowinning Methods 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 235000011121 sodium hydroxide Nutrition 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000035484 reaction time Effects 0.000 description 4
- 230000000717 retained effect Effects 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 238000004380 ashing Methods 0.000 description 3
- 150000004696 coordination complex Chemical class 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910000510 noble metal Inorganic materials 0.000 description 3
- 239000010970 precious metal Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- MNWBNISUBARLIT-UHFFFAOYSA-N sodium cyanide Chemical compound [Na+].N#[C-] MNWBNISUBARLIT-UHFFFAOYSA-N 0.000 description 3
- 229910052979 sodium sulfide Inorganic materials 0.000 description 3
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 3
- 238000000638 solvent extraction Methods 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000003958 fumigation Methods 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 229910052741 iridium Inorganic materials 0.000 description 2
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 239000010948 rhodium Substances 0.000 description 2
- 229910052703 rhodium Inorganic materials 0.000 description 2
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- KXZJHVJKXJLBKO-UHFFFAOYSA-N chembl1408157 Chemical compound N=1C2=CC=CC=C2C(C(=O)O)=CC=1C1=CC=C(O)C=C1 KXZJHVJKXJLBKO-UHFFFAOYSA-N 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 150000001868 cobalt Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 1
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000012527 feed solution Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 description 1
- 229940053662 nickel sulfate Drugs 0.000 description 1
- RRIWRJBSCGCBID-UHFFFAOYSA-L nickel sulfate hexahydrate Chemical compound O.O.O.O.O.O.[Ni+2].[O-]S([O-])(=O)=O RRIWRJBSCGCBID-UHFFFAOYSA-L 0.000 description 1
- 229940116202 nickel sulfate hexahydrate Drugs 0.000 description 1
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 description 1
- YFLLTMUVNFGTIW-UHFFFAOYSA-N nickel;sulfanylidenecopper Chemical compound [Ni].[Cu]=S YFLLTMUVNFGTIW-UHFFFAOYSA-N 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910052569 sulfide mineral Inorganic materials 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- DAFQZPUISLXFBF-UHFFFAOYSA-N tetraoxathiolane 5,5-dioxide Chemical compound O=S1(=O)OOOO1 DAFQZPUISLXFBF-UHFFFAOYSA-N 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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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
- C22B11/00—Obtaining noble metals
- C22B11/08—Obtaining noble metals by cyaniding
-
- 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
- C22B3/42—Treatment or purification of solutions, e.g. obtained by leaching by ion-exchange extraction
-
- 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
- C22B11/00—Obtaining noble metals
- C22B11/04—Obtaining noble metals by wet 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
- 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
- C22B3/24—Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition by adsorption on solid substances, e.g. by extraction with solid resins
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
a)PGM価値物および卑金属を非選択的に沈殿させ、PGM価値物および卑金属を含む不溶性沈澱を形成する工程と、
b)前記沈澱から選択的に浸出させて、(i)卑金属を含む浸出溶液およびPGM価値物を含む残渣、または(ii)卑金属およびPGM価値物を含む浸出溶液ならびに枯渇残渣を形成する工程と、
c)工程b)での選択的浸出によって、b)(i)またはb)(ii)の浸出溶液から卑金属を回収し、b)(i)の残渣またはb)(ii)の浸出溶液からPGM価値物を回収する工程と、
を含む。
銅を除去して電解採取工程に移す銅の溶媒抽出、
70〜180℃、好ましくは130〜140℃で、浸出液中の銅ニッケル比率を、ニッケル-銅硫化物マットに、複分解的(methathetically)に変え、硫化銅フラクションを処理して、浸出−電解採取プロセスにより銅を回収し、
0.3g/l銅未満の精鉱とする銅の電解採取および電解ストリッピング。
硫化水素ガスまたは硫化ナトリウム/硫化水素のいずれかによる硫化物沈澱、
硫酸ニッケル六水和物としての結晶化、および
水酸化マグネシウム、水酸化ナトリウム、炭酸ナトリウムによる水酸化物/炭酸塩沈澱。
NaHSを用いて試験を実施し、高温でシアン化物浸出液から価値金属を沈殿させた。
第2のシリーズの試験は、NaHSを用い、一定範囲のpHにわたり、周囲温度でシアン化物浸出液に対し実施し、価値金属を沈殿させた。
H2O2およびNa2S2O5を用い一連の試験を実施し、一定の範囲のpH値にわたりシアン化物溶液から価値金属を沈殿させた。
一連の試験において、PGMを含む精鉱のシアン化物浸出液を、50% H2SO4を用いて0〜5の一定範囲のpHにわたり酸性化した。
この試験では、実施例4から得た濾液に対し、単一の4級アンモニウムイオン交換樹脂およびカチオンイオン交換樹脂を使用してイオン交換を実施した。
このテストでは、リードカラムで樹脂を飽和、分析するために、pH2の酸性化工程から得られた濾液を、一連のイオン交換カラムに通した。
カラム1:2リットルのIRA 402 CL
カラム2:2リットルのIRA 402 CL
カラム3:2リットルの活性炭型CQ 006-12X40
カラム4:2リットルのIRA 402 CL
酸性化残渣に対する酸燻蒸後の溶液からイオン交換樹脂上にPGM価値物を吸着させるために一連の試験を実施した。
pH2の酸性化残渣を、それぞれ、10〜20bar(1000〜2000kPa)および150〜200℃の様々な圧力および温度での2段階アルカリ/酸浸出を行うことにより一連の試験を行った。
この一連の試験では、pH2酸性化残渣を様々な温度で焼成し、その後、高温、高圧で浸出させた。焼成温度は250℃〜800℃で変動し、焼成材料は希硫酸を用いて6bar(600kPa)、140℃で4時間浸出させた。
一連の試験で、pH2酸性化残渣を、様々な温度および圧力条件下で硫酸により浸出させた。浸出段階から得られた残渣を濃硫酸と混合し、300℃まで60分間加熱した(融解工程)。
この試験はパイロット運転として実施されたものであり、シアン化物溶液のpH2酸性化から得られる沈澱に対する改良プロセスを示す。
総圧力 1500kPa(g)
酸素分圧 450〜500kPa(g)
温度 180℃
スラリーpH 0.7〜0.8
保持時間 2.5時間
供給速度 0.25kg/h
コンパートメント数 1
圧力 大気圧
温度 290〜310℃
保持時間 1h
水クエンチ温度 90℃
水クエンチ保持時間 1h
硫酸/残渣 3.6
Claims (17)
- 白金族金属(PGM)価値物および卑金属を含む貴液または浸出液からのPGMの回収方法であって、
a)PGM価値物および卑金属を非選択的に沈殿させ、PGM価値物および卑金属を含む不溶性沈澱を形成する工程と、
b)前記沈澱から選択的に浸出させて、(i)卑金属を含む浸出溶液およびPGM価値物を含む残渣、または(ii)卑金属およびPGM価値物を含む浸出溶液ならびに枯渇残渣を形成する工程と、
c)工程b)での選択的浸出によって、b)(i)またはb)(ii)の浸出溶液から卑金属を回収し、あるいはb)(i)の残渣またはb)(ii)の浸出溶液からPGM価値物を回収する工程と、
を含む回収方法。 - 前記PGM価値物および卑金属を含む貴液または浸出液はシアン化物溶液または浸出液である、請求項1記載の回収方法。
- 前記工程a)でのPGM価値物および卑金属の非選択的沈殿を、貴液または浸出液のpHを制御して減少させ約0〜約5の範囲内にすることにより行う請求項1または2記載の回収方法。
- 前記貴液または浸出液のpHを約1〜約3の範囲内まで減少させる、請求項3記載の回収方法。
- 前記貴液または浸出液のpHを約2に減少させる、請求項3記載の回収方法。
- 前記b)の選択的浸出が、PGM価値物が残渣中に残る加圧浸出工程である請求項1から5のいずれか一つに記載の回収方法。
- 前記PGM価値物を融解工程または別の浸出工程により残渣から回収し、PGM価値物に富む精鉱を製造する請求項6記載の回収方法。
- 前記加圧浸出工程では、最初にアルカリ浸出を実施し、続いて酸浸出を行う請求項6記載の回収方法。
- 前記PGM価値物を還元浸出工程により残渣から回収し、高品質のPGM精鉱を製造する請求項8記載の回収方法。
- 前記工程a)の不溶性沈澱を酸により燻蒸し、その後、選択的浸出を行い、アニオンとしてのPGM価値物およびカチオンとしての卑金属の両方を含む浸出液を形成し、PGM価値物をイオン交換樹脂上で回収する請求項1から5のいずれか一つに記載の回収方法。
- 前記樹脂を焼却してPGM価値物に富む灰を形成して、または前記樹脂から溶離させてPGM価値物を回収する請求項10記載の回収方法。
- 前記工程a)の不溶性沈澱を最初に焼成し、その後選択的に浸出させて卑金属を除去し、PGMリッチな残渣または精鉱を製造する請求項1から5のいずれか一つに記載の回収方法。
- 前記卑金属をb)(i)またはb)(ii)の浸出溶液から沈殿させて回収する請求項1から12のいずれか一つに記載の回収方法。
- 前記工程a)での非選択的沈殿後溶液中に残った全てのPGM価値物は、イオン交換樹脂に該溶液を通すことにより回収することができる請求項1から13のいずれか一つに記載の回収方法。
- 前記樹脂を焼却してPGM価値物に富む灰を形成し、または前記樹脂から溶離させてPGM価値物を回収する請求項14記載の回収方法。
- 説明した複数の態様のうちのいずれか一つを参照して本明細書で実質的に記述されている、請求項1記載の回収方法。
- 例示的な複数の実施例のうちのいずれか一つを参照して本明細書で実質的に記述されている、請求項1記載のプロセス。
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PCT/AU2003/000435 WO2003087416A1 (en) | 2002-04-11 | 2003-04-11 | Process for extracting platinum group metals |
AUPCT/AU03/00435 | 2003-04-11 | ||
ZA2003/5682 | 2003-07-23 | ||
ZA200305682 | 2003-07-23 | ||
PCT/IB2004/001102 WO2004090178A1 (en) | 2003-04-11 | 2004-04-08 | Recovery of platinum group metals |
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WO2014175218A1 (ja) * | 2013-04-24 | 2014-10-30 | 田中貴金属工業株式会社 | 有価金属回収方法 |
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DE102011014505A1 (de) * | 2011-03-18 | 2012-09-20 | Heraeus Precious Metals Gmbh & Co. Kg | Prozess zur Rückgewinnung von Edelmetall aus funktionalisierten edelmetallhaltigen Adsorptionsmaterialien |
WO2013082614A1 (en) | 2011-12-02 | 2013-06-06 | Stillwater Mining Company | Precious metals recovery |
CN106367611B (zh) * | 2016-09-13 | 2018-03-30 | 中南大学 | 一种从废Pd/Al2O3催化剂氯化浸出液中分离富集钯的方法 |
CN111876597B (zh) * | 2020-08-03 | 2022-02-22 | 国家地质实验测试中心 | 一种从辉钼矿中提取放射性成因187Os的方法 |
CN112575189B (zh) * | 2020-11-20 | 2023-01-24 | 金川集团股份有限公司 | 一种高铬高镁铂族金属选矿精矿强化浸出液的处理方法 |
CN112359205B (zh) * | 2020-11-20 | 2022-10-04 | 金川集团股份有限公司 | 一种铂族金属选矿精矿强化浸出液的处理方法 |
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CA2522074C (en) | 2012-08-07 |
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CA2522074A1 (en) | 2004-10-21 |
EP1623049B1 (en) | 2009-06-24 |
CN100355917C (zh) | 2007-12-19 |
WO2004090178A1 (en) | 2004-10-21 |
JP4916305B2 (ja) | 2012-04-11 |
AU2004227192B2 (en) | 2009-09-17 |
EP1623049A1 (en) | 2006-02-08 |
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