JP5840643B2 - 硫化鉱物からの金の回収方法 - Google Patents
硫化鉱物からの金の回収方法 Download PDFInfo
- Publication number
- JP5840643B2 JP5840643B2 JP2013075230A JP2013075230A JP5840643B2 JP 5840643 B2 JP5840643 B2 JP 5840643B2 JP 2013075230 A JP2013075230 A JP 2013075230A JP 2013075230 A JP2013075230 A JP 2013075230A JP 5840643 B2 JP5840643 B2 JP 5840643B2
- Authority
- JP
- Japan
- Prior art keywords
- gold
- leaching
- silver
- solution
- chloride
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000010931 gold Substances 0.000 title claims description 163
- 229910052737 gold Inorganic materials 0.000 title claims description 162
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims description 161
- 238000000034 method Methods 0.000 title claims description 45
- 229910052569 sulfide mineral Inorganic materials 0.000 title claims description 25
- 238000002386 leaching Methods 0.000 claims description 124
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 68
- 239000000243 solution Substances 0.000 claims description 58
- -1 iron ion Chemical class 0.000 claims description 40
- 239000007788 liquid Substances 0.000 claims description 27
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 claims description 24
- 229910001431 copper ion Inorganic materials 0.000 claims description 23
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 claims description 21
- 229910021607 Silver chloride Inorganic materials 0.000 claims description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- 229910052709 silver Inorganic materials 0.000 claims description 20
- 239000004332 silver Substances 0.000 claims description 20
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 claims description 20
- 239000007800 oxidant agent Substances 0.000 claims description 19
- 229910052742 iron Inorganic materials 0.000 claims description 17
- 230000033116 oxidation-reduction process Effects 0.000 claims description 15
- 229910021591 Copper(I) chloride Inorganic materials 0.000 claims description 13
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 claims description 13
- 229940045803 cuprous chloride Drugs 0.000 claims description 13
- 239000007864 aqueous solution Substances 0.000 claims description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 9
- 230000002378 acidificating effect Effects 0.000 claims description 9
- 238000007664 blowing Methods 0.000 claims description 5
- 239000010949 copper Substances 0.000 description 28
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 21
- 229910052802 copper Inorganic materials 0.000 description 21
- 238000001179 sorption measurement Methods 0.000 description 21
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 13
- 229910052794 bromium Inorganic materials 0.000 description 13
- 230000008569 process Effects 0.000 description 13
- 239000000460 chlorine Substances 0.000 description 12
- 229910052801 chlorine Inorganic materials 0.000 description 11
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 description 10
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 description 10
- 238000011084 recovery Methods 0.000 description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 7
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 5
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- 150000001649 bromium compounds Chemical class 0.000 description 4
- QTMDXZNDVAMKGV-UHFFFAOYSA-L copper(ii) bromide Chemical compound [Cu+2].[Br-].[Br-] QTMDXZNDVAMKGV-UHFFFAOYSA-L 0.000 description 4
- GYCHYNMREWYSKH-UHFFFAOYSA-L iron(ii) bromide Chemical compound [Fe+2].[Br-].[Br-] GYCHYNMREWYSKH-UHFFFAOYSA-L 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 3
- 150000001340 alkali metals Chemical class 0.000 description 3
- ODWXUNBKCRECNW-UHFFFAOYSA-M bromocopper(1+) Chemical compound Br[Cu+] ODWXUNBKCRECNW-UHFFFAOYSA-M 0.000 description 3
- 229960003280 cupric chloride Drugs 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- OVWPJGBVJCTEBJ-UHFFFAOYSA-K gold tribromide Chemical compound Br[Au](Br)Br OVWPJGBVJCTEBJ-UHFFFAOYSA-K 0.000 description 3
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 3
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical class Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 3
- 229910001509 metal bromide Inorganic materials 0.000 description 3
- 229910001510 metal chloride Inorganic materials 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 229910021590 Copper(II) bromide Inorganic materials 0.000 description 2
- 229910003767 Gold(III) bromide Inorganic materials 0.000 description 2
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 2
- 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 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052788 barium Inorganic materials 0.000 description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 2
- 229910052790 beryllium Inorganic materials 0.000 description 2
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 2
- 229910052792 caesium Inorganic materials 0.000 description 2
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 150000001805 chlorine compounds Chemical class 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229960002089 ferrous chloride Drugs 0.000 description 2
- 229910052730 francium Inorganic materials 0.000 description 2
- KLMCZVJOEAUDNE-UHFFFAOYSA-N francium atom Chemical compound [Fr] KLMCZVJOEAUDNE-UHFFFAOYSA-N 0.000 description 2
- 150000002343 gold Chemical class 0.000 description 2
- 239000013067 intermediate product Substances 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 229910052705 radium Inorganic materials 0.000 description 2
- HCWPIIXVSYCSAN-UHFFFAOYSA-N radium atom Chemical compound [Ra] HCWPIIXVSYCSAN-UHFFFAOYSA-N 0.000 description 2
- 229910052701 rubidium Inorganic materials 0.000 description 2
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229910052712 strontium Inorganic materials 0.000 description 2
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 2
- FEONEKOZSGPOFN-UHFFFAOYSA-K tribromoiron Chemical compound Br[Fe](Br)Br FEONEKOZSGPOFN-UHFFFAOYSA-K 0.000 description 2
- BMYNFMYTOJXKLE-UHFFFAOYSA-N 3-azaniumyl-2-hydroxypropanoate Chemical compound NCC(O)C(O)=O BMYNFMYTOJXKLE-UHFFFAOYSA-N 0.000 description 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- 229910021589 Copper(I) bromide Inorganic materials 0.000 description 1
- 229910021575 Iron(II) bromide Inorganic materials 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 229910001514 alkali metal chloride Inorganic materials 0.000 description 1
- 229910001617 alkaline earth metal chloride Inorganic materials 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- SXDBWCPKPHAZSM-UHFFFAOYSA-N bromic acid Chemical compound OBr(=O)=O SXDBWCPKPHAZSM-UHFFFAOYSA-N 0.000 description 1
- 229940006460 bromide ion Drugs 0.000 description 1
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 description 1
- 229910052951 chalcopyrite Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- NKNDPYCGAZPOFS-UHFFFAOYSA-M copper(i) bromide Chemical compound Br[Cu] NKNDPYCGAZPOFS-UHFFFAOYSA-M 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005363 electrowinning Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 229940046149 ferrous bromide Drugs 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- FDWREHZXQUYJFJ-UHFFFAOYSA-M gold monochloride Chemical compound [Cl-].[Au+] FDWREHZXQUYJFJ-UHFFFAOYSA-M 0.000 description 1
- RJHLTVSLYWWTEF-UHFFFAOYSA-K gold trichloride Chemical class Cl[Au](Cl)Cl RJHLTVSLYWWTEF-UHFFFAOYSA-K 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 229910000042 hydrogen bromide Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 1
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 150000002830 nitrogen compounds Chemical class 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000013519 translation Methods 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
- 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
- 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
- C22B3/44—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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Description
金浸出工程では、塩素イオン、臭素イオン、銅イオン及び鉄イオンを含有する酸性水溶液(金浸出液)を酸化剤の供給下で原料に接触させて、原料中の金成分を浸出する。酸性水溶液中の塩素イオン濃度を40〜200g/L、臭素イオン濃度を20〜100g/L、銅イオン濃度を5〜25g/L、鉄イオン濃度を0.01〜10g/Lに調整することが好ましい。本発明の処理対象となる原料は、硫化鉱物、又は硫化鉱物に対して浸出処理を行った後の浸出残渣である。硫化鉱物としては特に制限はないが、典型的には金を含有する一次硫化銅鉱(例:黄銅鉱)、金を含むケイ酸鉱を含有する硫化銅鉱、金を含有する黄鉄鉱が挙げられる。また、硫化鉱物の様々な処理過程で生じる中間生成物も硫化鉱物として取り扱う。
金浸出工程終了後の金浸出後液中で金が安定して溶解している状態を長期間保持するために、保存期間中に金浸出後液中の臭素イオン濃度を調整する。具体的には、金を浸出した酸性水溶液中の臭素イオン濃度が40g/L以上のとき、金浸出後液の酸化還元電位を500mV以上(参照電極、銀/塩化銀)で室温以上(25℃以上)で管理することにより金の溶解を維持可能である。これは浸出直後の酸化還元電位よりも40mV以上低い値である。金を浸出した酸性水溶液中の臭素イオン濃度が80g/L以上であれば、金浸出後液の酸化還元電位を480mV以上(参照電極、銀/塩化銀)で室温以上(25℃以上)で管理することも可能である。また、管理温度が高いほうが金の溶解性は高くなるが、保温のための費用がかかるため、室温(20〜60℃、典型的には25〜40℃)で保存することが好ましい。
保存工程を経た金浸出後液に対して、CuClを加えて撹拌し、一度酸化還元電位を520mV以下に、より好ましくは500mV以下に下げた後に、酸化剤を加えて再度ORPを520mV以上に調整する。これにより、金の活性炭吸着を阻害する金浸出後液中の一価の銅イオンが二価の銅イオンに酸化されて減少し、金浸出後液中の活性炭への吸着競合物が少なくなるため、活性炭への金の吸着率がより向上する。
金の浸出反応後、固液分離することによって得られた金溶解液から、活性炭吸着により金を回収する工程4を実施する。金の活性炭への接触はバッチ回分式もしくは活性炭を充填した吸着塔に酸性浸出液を連続通液することで行ってもよい。
銅浸出工程によって得られた浸出後液は銅成分を多量に含んでいるので、浸出後液から銅を回収することができる。銅の回収方法としては特に制限はないが、例えば溶媒抽出、イオン交換、卑な金属との置換析出及び電解採取などを利用することができる。浸出後液中の銅は1価及び2価の状態が混在しているが、溶媒抽出やイオン交換を円滑に行うために、全部が2価の銅イオンとなるように予め酸化しておくことが好ましい。酸化の方法は特に制限はないが空気や酸素を浸出後液中に吹き込む方法が簡便である。
試験では、金を含有する硫化銅精鉱中の銅を浸出した後の残渣に対して金浸出した。残渣中の金品位は26g/tで、銅品位は1.2%であった。金浸出は、Clイオン濃度を40g/L、Cuイオン濃度を20g/L、Feイオン濃度を2g/L、Brイオン濃度を20〜120g/Lに調整し、空気を吹き込みながら液温80℃で行った。80℃での酸化還元電位は537〜557mV(参照電極、銀/塩化銀)であった。
また、酸化還元電位を480mVにした場合、Br濃度が60g/Lの浸出液の金濃度は1日後には半分以下に低下したが、Br濃度が80g/Lの浸出液の金濃度は5日後でも当初の金濃度を保持していた。
50g/Lの塩化物イオン、80g/Lの臭化物イオン、18g/Lの銅、及び0.2g/Lの鉄を含む金浸出液を用いて、金浸出工程後に得られた金浸出後液中の金を浸出した。金浸出後液は、NaCl:84g/L、NaBr:103g/L、Cu:20g/L、Fe:2g/L、Au:8mg/L含有し、pHは1.2であった。CuClを添加してORPを510mVに調整した。浸出後液を55℃に加温し、空気を1分当たり0.4L吹き込みながら攪拌した。この金浸出後液をヤシ殻由来活性炭(太平化学産業社製ヤシコールMC)およそ14mlを充填したガラス製カラムに通し、金を活性炭に吸着させた。カラムの直径は11mm、高さ150mmとした。液の供給速度は11.9ml/分、空間速度は50(1/h)とした。排出される吸着後液中の金を塩酸で希釈しICP−AESにより定量した。ORPと吸着後液の関係を図2に示す。
実施例2で使用した金浸出後と活性炭充填カラムとを用いて連続的に給液する中で、CuClの添加と空気吹込みによりORPを変化させて吸着後液の金濃度を測定した。結果を図3に示す。
Claims (4)
- 硫化鉱物又は硫化鉱物に対して浸出処理を行った後の浸出残渣を、塩素イオン、臭素イオン、銅イオン、及び鉄イオンを含有する酸性水溶液と酸化剤の供給下で接触させて、浸出残渣中の金成分を浸出する工程1と、
金を浸出した金浸出後液中の臭素イオン濃度を40g/L以上に、酸化還元電位(参照電極、銀/塩化銀)を500mV(参照電極、銀/塩化銀)以上に保持しながら保存する工程2と、
工程2で得られた金浸出後液に塩化第一銅を添加した後、酸化剤を加えて酸化還元電位(参照電極、銀/塩化銀)を520mV以上に調整して金浸出後液中の一価の銅イオンを低減させる工程3と、
工程3で得られた金浸出後液中の金を活性炭に吸着させる工程4と
を含むことを特徴とする硫化鉱物からの金の回収方法。 - 硫化鉱物又は硫化鉱物に対して浸出処理を行った後の浸出残渣を、塩素イオン、臭素イオン、銅イオン、及び鉄イオンを含有する酸性水溶液と酸化剤の供給下で接触させて、浸出残渣中の金成分を浸出する工程1と、
金を浸出した金浸出後液中の臭素イオン濃度を80g/L以上に、酸化還元電位(参照電極、銀/塩化銀)を480mV(参照電極、銀/塩化銀)以上に保持しながら保存する工程2と、
工程2で得られた金浸出後液に塩化第一銅を添加した後、酸化剤を加えて酸化還元電位(参照電極、銀/塩化銀)を520mV以上に調整して金浸出後液中の一価の銅イオンを低減させる工程3と、
工程3で得られた金浸出後液中の金を活性炭に吸着させる工程4と
を含むことを特徴とする硫化鉱物からの金の回収方法。 - 工程3が、酸化還元電位(参照電極、銀/塩化銀)を520mV〜570mVに調整することを含む、請求項1又2に記載の硫化鉱物からの金の回収方法。
- 工程3が、空気の吹き込みにより酸化還元電位(参照電極、銀/塩化銀)を調整することを含む請求項1〜3のいずれか1項に記載の硫化鉱物からの金の回収方法。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013075230A JP5840643B2 (ja) | 2013-03-29 | 2013-03-29 | 硫化鉱物からの金の回収方法 |
AU2014245390A AU2014245390B2 (en) | 2013-03-29 | 2014-02-12 | Method for recovering gold from sulfide ore |
CA2908364A CA2908364C (en) | 2013-03-29 | 2014-02-12 | Method of recovering gold from sulfide ore |
PE2015002097A PE20151820A1 (es) | 2013-03-29 | 2014-02-12 | Metodo para recuperar oro a partir de mineral de sulfuro |
PCT/JP2014/053193 WO2014156350A1 (ja) | 2013-03-29 | 2014-02-12 | 硫化鉱物からの金の回収方法 |
CL2015002902A CL2015002902A1 (es) | 2013-03-29 | 2015-09-29 | Metodo para recuperar oro a partir de mineral de sulfuro. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013075230A JP5840643B2 (ja) | 2013-03-29 | 2013-03-29 | 硫化鉱物からの金の回収方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2014198888A JP2014198888A (ja) | 2014-10-23 |
JP5840643B2 true JP5840643B2 (ja) | 2016-01-06 |
Family
ID=51623351
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2013075230A Active JP5840643B2 (ja) | 2013-03-29 | 2013-03-29 | 硫化鉱物からの金の回収方法 |
Country Status (5)
Country | Link |
---|---|
JP (1) | JP5840643B2 (ja) |
CA (1) | CA2908364C (ja) |
CL (1) | CL2015002902A1 (ja) |
PE (1) | PE20151820A1 (ja) |
WO (1) | WO2014156350A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI20145949A (fi) * | 2014-10-29 | 2016-04-30 | Outotec Finland Oy | Menetelmä kullan talteenottamiseksi |
CN104789791B (zh) * | 2015-04-14 | 2017-06-23 | 吉林省有色金属地质勘查局研究所 | 泡沫吸附金的自动解脱装置 |
JP6849482B2 (ja) * | 2016-03-31 | 2021-03-24 | Jx金属株式会社 | 金を含む鉱石もしくは精錬中間物からの金の回収方法 |
JP6899672B2 (ja) * | 2017-03-14 | 2021-07-07 | Jx金属株式会社 | 鉱石もしくは精錬中間物からの金の回収方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4999108B2 (ja) * | 2008-03-27 | 2012-08-15 | Jx日鉱日石金属株式会社 | 金の浸出方法 |
JP5319718B2 (ja) * | 2011-03-04 | 2013-10-16 | Jx日鉱日石金属株式会社 | 硫化鉱からの銅及び金の浸出方法 |
JP5792043B2 (ja) * | 2011-11-30 | 2015-10-07 | Jx日鉱日石金属株式会社 | 硫化鉱からの金の浸出方法 |
-
2013
- 2013-03-29 JP JP2013075230A patent/JP5840643B2/ja active Active
-
2014
- 2014-02-12 CA CA2908364A patent/CA2908364C/en active Active
- 2014-02-12 PE PE2015002097A patent/PE20151820A1/es active IP Right Grant
- 2014-02-12 WO PCT/JP2014/053193 patent/WO2014156350A1/ja active Application Filing
-
2015
- 2015-09-29 CL CL2015002902A patent/CL2015002902A1/es unknown
Also Published As
Publication number | Publication date |
---|---|
CA2908364C (en) | 2017-11-21 |
JP2014198888A (ja) | 2014-10-23 |
AU2014245390A1 (en) | 2015-10-22 |
CA2908364A1 (en) | 2014-10-02 |
PE20151820A1 (es) | 2015-12-16 |
WO2014156350A1 (ja) | 2014-10-02 |
CL2015002902A1 (es) | 2016-06-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5319718B2 (ja) | 硫化鉱からの銅及び金の浸出方法 | |
AU2014245391B2 (en) | Method for recovering gold from gold ore containing pyrite | |
JP5467133B2 (ja) | 金の回収方法 | |
JP5840643B2 (ja) | 硫化鉱物からの金の回収方法 | |
WO2013108478A1 (ja) | 金の回収方法及びそれを用いた金の製造方法 | |
EP2992119B1 (en) | Method of preparing a gold-containing solution and process arrangement for recovering gold and silver | |
JP5840642B2 (ja) | 硫化鉱物からの金の回収方法 | |
JP5792043B2 (ja) | 硫化鉱からの金の浸出方法 | |
US9206492B2 (en) | Closed loop method for gold and silver extraction by halogens | |
JP6034433B2 (ja) | 硫化鉱からの金の浸出方法 | |
JP2013163868A (ja) | 硫化鉱からの銅及び金の浸出方法 | |
JP6195536B2 (ja) | 鉄の除去方法及び鉄の浸出方法、並びに金の回収方法 | |
JP6899672B2 (ja) | 鉱石もしくは精錬中間物からの金の回収方法 | |
JP6849482B2 (ja) | 金を含む鉱石もしくは精錬中間物からの金の回収方法 | |
JP7153599B2 (ja) | 鉱石の処理方法 | |
JP2019116670A (ja) | 銅の回収方法、及び電気銅の製造方法 | |
JP2014194049A (ja) | 硝石浸出液を用いて硫化銅鉱から銅を浸出する方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20140925 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20150714 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20150909 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20151013 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20151111 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 5840643 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |