WO2022018491A1 - Procedimiento para la producción de concentrado de plata a partir de residuos metalúrgicos - Google Patents
Procedimiento para la producción de concentrado de plata a partir de residuos metalúrgicos Download PDFInfo
- Publication number
- WO2022018491A1 WO2022018491A1 PCT/IB2020/056900 IB2020056900W WO2022018491A1 WO 2022018491 A1 WO2022018491 A1 WO 2022018491A1 IB 2020056900 W IB2020056900 W IB 2020056900W WO 2022018491 A1 WO2022018491 A1 WO 2022018491A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- leaching
- stage
- silver
- solution
- copper
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 103
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 76
- 239000004332 silver Substances 0.000 title claims abstract description 76
- 239000012141 concentrate Substances 0.000 title claims abstract description 33
- 238000002386 leaching Methods 0.000 claims abstract description 149
- 239000011133 lead Substances 0.000 claims abstract description 68
- 239000010949 copper Substances 0.000 claims abstract description 65
- 229910052802 copper Inorganic materials 0.000 claims abstract description 64
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 63
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 62
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910052742 iron Inorganic materials 0.000 claims abstract description 32
- 239000010802 sludge Substances 0.000 claims abstract description 19
- 239000010703 silicon Substances 0.000 claims abstract description 17
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 17
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000002253 acid Substances 0.000 claims abstract description 14
- 238000001556 precipitation Methods 0.000 claims abstract description 14
- 239000002244 precipitate Substances 0.000 claims abstract description 8
- 150000001734 carboxylic acid salts Chemical class 0.000 claims abstract description 7
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 4
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims abstract description 4
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 39
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims description 33
- 229910052785 arsenic Inorganic materials 0.000 claims description 32
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 24
- 239000001509 sodium citrate Substances 0.000 claims description 23
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical group O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 23
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 21
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 20
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 17
- 239000007787 solid Substances 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 239000002699 waste material Substances 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 11
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000003723 Smelting Methods 0.000 claims description 7
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 7
- 229910052566 spinel group Inorganic materials 0.000 claims description 7
- 229910052797 bismuth Inorganic materials 0.000 claims description 6
- PIJPYDMVFNTHIP-UHFFFAOYSA-L lead sulfate Chemical compound [PbH4+2].[O-]S([O-])(=O)=O PIJPYDMVFNTHIP-UHFFFAOYSA-L 0.000 claims description 6
- 239000000395 magnesium oxide Substances 0.000 claims description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 6
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 6
- 229910052725 zinc Inorganic materials 0.000 claims description 6
- 239000011701 zinc Substances 0.000 claims description 6
- KEQXNNJHMWSZHK-UHFFFAOYSA-L 1,3,2,4$l^{2}-dioxathiaplumbetane 2,2-dioxide Chemical compound [Pb+2].[O-]S([O-])(=O)=O KEQXNNJHMWSZHK-UHFFFAOYSA-L 0.000 claims description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 5
- HTUMBQDCCIXGCV-UHFFFAOYSA-N lead oxide Chemical compound [O-2].[Pb+2] HTUMBQDCCIXGCV-UHFFFAOYSA-N 0.000 claims description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- 235000019738 Limestone Nutrition 0.000 claims description 4
- 229910052924 anglesite Inorganic materials 0.000 claims description 4
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 4
- -1 covelin Chemical compound 0.000 claims description 4
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052622 kaolinite Inorganic materials 0.000 claims description 4
- 239000006028 limestone Substances 0.000 claims description 4
- 230000003472 neutralizing effect Effects 0.000 claims description 4
- 238000010979 pH adjustment Methods 0.000 claims description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Substances [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 4
- 238000002425 crystallisation Methods 0.000 claims description 3
- 230000008025 crystallization Effects 0.000 claims description 3
- YGANSGVIUGARFR-UHFFFAOYSA-N dipotassium dioxosilane oxo(oxoalumanyloxy)alumane oxygen(2-) Chemical compound [O--].[K+].[K+].O=[Si]=O.O=[Al]O[Al]=O YGANSGVIUGARFR-UHFFFAOYSA-N 0.000 claims description 3
- UYZMAFWCKGTUMA-UHFFFAOYSA-K iron(3+);trioxido(oxo)-$l^{5}-arsane;dihydrate Chemical compound O.O.[Fe+3].[O-][As]([O-])([O-])=O UYZMAFWCKGTUMA-UHFFFAOYSA-K 0.000 claims description 3
- ACNRWWUEFJNUDD-UHFFFAOYSA-N lead(2+);distiborate Chemical compound [Pb+2].[Pb+2].[Pb+2].[O-][Sb]([O-])([O-])=O.[O-][Sb]([O-])([O-])=O ACNRWWUEFJNUDD-UHFFFAOYSA-N 0.000 claims description 3
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 3
- 239000000347 magnesium hydroxide Substances 0.000 claims description 3
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 3
- 229910052627 muscovite Inorganic materials 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 2
- 239000000920 calcium hydroxide Substances 0.000 claims description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000292 calcium oxide Substances 0.000 claims description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 2
- 229910052947 chalcocite Inorganic materials 0.000 claims description 2
- 150000003841 chloride salts Chemical class 0.000 claims description 2
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 2
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 2
- 229910052949 galena Inorganic materials 0.000 claims description 2
- 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 description 2
- BMWMWYBEJWFCJI-UHFFFAOYSA-K iron(3+);trioxido(oxo)-$l^{5}-arsane Chemical compound [Fe+3].[O-][As]([O-])([O-])=O BMWMWYBEJWFCJI-UHFFFAOYSA-K 0.000 claims description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 2
- 229910000464 lead oxide Inorganic materials 0.000 claims description 2
- XCAUINMIESBTBL-UHFFFAOYSA-N lead(ii) sulfide Chemical compound [Pb]=S XCAUINMIESBTBL-UHFFFAOYSA-N 0.000 claims description 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 2
- 239000001095 magnesium carbonate Substances 0.000 claims description 2
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 2
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 claims description 2
- 229910052683 pyrite Inorganic materials 0.000 claims description 2
- 239000011028 pyrite Substances 0.000 claims description 2
- 229910019440 Mg(OH) Inorganic materials 0.000 claims 1
- 229910052732 germanium Inorganic materials 0.000 claims 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- 229910000376 lead(II) sulfate Inorganic materials 0.000 claims 1
- 239000000243 solution Substances 0.000 abstract 4
- RWMKRPGPZOVQPN-UHFFFAOYSA-N [Ag+6] Chemical compound [Ag+6] RWMKRPGPZOVQPN-UHFFFAOYSA-N 0.000 abstract 1
- 230000002950 deficient Effects 0.000 abstract 1
- 239000012266 salt solution Substances 0.000 abstract 1
- 229960002337 magnesium chloride Drugs 0.000 description 8
- 235000011121 sodium hydroxide Nutrition 0.000 description 7
- 241000894007 species Species 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 6
- HOQPTLCRWVZIQZ-UHFFFAOYSA-H bis[[2-(5-hydroxy-4,7-dioxo-1,3,2$l^{2}-dioxaplumbepan-5-yl)acetyl]oxy]lead Chemical compound [Pb+2].[Pb+2].[Pb+2].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O.[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HOQPTLCRWVZIQZ-UHFFFAOYSA-H 0.000 description 6
- 239000011521 glass Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- YADSGOSSYOOKMP-UHFFFAOYSA-N dioxolead Chemical compound O=[Pb]=O YADSGOSSYOOKMP-UHFFFAOYSA-N 0.000 description 4
- YEXPOXQUZXUXJW-UHFFFAOYSA-N lead(II) oxide Inorganic materials [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 4
- 230000035484 reaction time Effects 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 238000006477 desulfuration reaction Methods 0.000 description 3
- 230000023556 desulfurization Effects 0.000 description 3
- 238000009854 hydrometallurgy Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 2
- 241000207199 Citrus Species 0.000 description 2
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000001099 ammonium carbonate Substances 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 150000001860 citric acid derivatives Chemical class 0.000 description 2
- 235000020971 citrus fruits Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 229910001447 ferric ion Inorganic materials 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 235000014413 iron hydroxide Nutrition 0.000 description 2
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical class [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 2
- 229910052745 lead Inorganic materials 0.000 description 2
- 229910021514 lead(II) hydroxide Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229940091250 magnesium supplement Drugs 0.000 description 2
- 229910001510 metal chloride Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- GMPMGSCJCDAUMP-UHFFFAOYSA-H 2-hydroxypropane-1,2,3-tricarboxylate;lead(2+);trihydrate Chemical compound O.O.O.[Pb+2].[Pb+2].[Pb+2].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O.[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O GMPMGSCJCDAUMP-UHFFFAOYSA-H 0.000 description 1
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 1
- 229910002548 FeFe Inorganic materials 0.000 description 1
- 229910000863 Ferronickel Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 229910052776 Thorium Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 235000011054 acetic acid Nutrition 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002817 coal dust Substances 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
- 150000001875 compounds Chemical class 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas 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
- 229910052595 hematite Inorganic materials 0.000 description 1
- 239000011019 hematite Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229940050906 magnesium chloride hexahydrate Drugs 0.000 description 1
- DHRRIBDTHFBPNG-UHFFFAOYSA-L magnesium dichloride hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[Cl-].[Cl-] DHRRIBDTHFBPNG-UHFFFAOYSA-L 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 235000011083 sodium citrates Nutrition 0.000 description 1
- ZNCPFRVNHGOPAG-UHFFFAOYSA-L sodium oxalate Chemical compound [Na+].[Na+].[O-]C(=O)C([O-])=O ZNCPFRVNHGOPAG-UHFFFAOYSA-L 0.000 description 1
- 229940039790 sodium oxalate Drugs 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- DNYWZCXLKNTFFI-UHFFFAOYSA-N uranium Chemical compound [U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U] DNYWZCXLKNTFFI-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
-
- 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
Definitions
- the invention relates to a process for the production of silver concentrate from metallurgical waste, in particular from waste containing copper, iron, lead, silicon and silver, and which may optionally contain elements such as arsenic, antimony and the bismuth.
- metallurgical waste is dust that comes from a metal smelting process.
- metallurgical residues are powders that come from a copper smelting process.
- metallurgical residues contemplate materials that have already been subjected to leaching processes, such as sulfuric leaching.
- the copper in the sediment is found mainly forming ferrite-type species and/or spinels of the CuFe 2 CO 4 form, as well as zinc, ZnFe 2 CO 4 and an important part of the iron FeFe 2 CO 4 .
- the leaching of these species is a function of temperature, acid concentration, and residence time, as described in the study by BS Boyanov, et al. in World Academy of Science, Engineering and Technology, Vol 9, 2015, 1592-1598, who carried out a study on the leaching of synthetic zinc, copper and cadmium ferrites, evaluating the aforementioned variables.
- the results of this study show that ferrites dissolve better in HCl and H 2 SO 4 , at high temperatures and high acid concentrations.
- the hydrometallurgical lead recovery route allows working at reduced temperatures, reducing energy consumption, and in turn does not produce sulfur dioxide, which is characterized as a gas that is harmful to the environment.
- the hydrometallurgical route makes use of desulfurization agents such as sodium carbonate, ammonium carbonate, sodium bicarbonate, ammonium bicarbonate, sodium hydroxide, sodium citrate, acetic acid, sodium acetate, among others.
- desulfurization agents such as sodium carbonate, ammonium carbonate, sodium bicarbonate, ammonium bicarbonate, sodium hydroxide, sodium citrate, acetic acid, sodium acetate, among others.
- the goal of these processes is to exchange the sulfate ion for other anions to form insoluble salts.
- lead salts such as lead citrate can be calcined to produce lead oxide (Zárate-Gutiérrez and Lapidus, Hydrometallurgy 144 (2014): 124-128).
- the mixture of citric acid with sodium citrate is beneficial for the leaching of lead sulfate and subsequent crystallization of lead citrate.
- the solubility product constant of anglesite at 20°C is 6.31 10 -7 , indicating that the solubility of PbSO 4 is very low.
- lead forms a series of soluble complexes.
- citrate complex species are present in solution over the pH range 4.6 to 11.5. At pH below 4.6 the presence of lead sulfate is predominant, while at pH above 11.5 the presence of lead hydroxide is dominant.
- leaching is carried out with a molar ratio of citric acid to lead (II) and (IV) oxide of 1:1 and 4:1 to 20 °C between 15 and 60 min of reaction, reaching leaching efficiencies greater than 99% by weight, obtaining Pb(C 6 H 6 O 7 ) H 2 O as the main species (Sonmez and Kumar, Hydrometallurgy 95, no. 1- 2 (2009), 82-86.).
- Pulp density is another important parameter for lead leaching with citrate solutions.
- citrate solutions Within the range of 10 to 50 g/L of anglesite pulp, leached with a 1 M sodium citrate solution, pH 7 at 600 rpm and 25°C, the highest lead extraction levels of 90 to 94% were reached. with a pulp concentration of 10 g/L. The higher the concentration of the pulp, the lower the amount of lead extracted.
- the technology based on the recovery of lead from lead waste using citric acid has been developed by Cambridge Enterprise Limited W02008056125A1, and basically includes treating lead waste comprising lead(II) oxide, lead(IV) oxide and sulfate of lead with a solution of citric acid, and which can alternatively be treated in combination with sodium citrate at a pH that varies within the range of 1.4 to 6. It is eventually possible to add hydrogen peroxide in a basic environment as a reducing agent to accelerate the leaching reaction of lead(IV) oxide to produce lead citrate (Sonmez and Kumar, Hydrometallurgy 95, no. 1-2 (2009), 82-86).
- the present invention differs from patent W02008056125A1 in that the pH required for leaching varies between 5.33 and 8.8, where a pH equal to 7 is preferably used. Additionally, the present invention proposes recirculating the citrate solution obtained after to a precipitation stage with sodium carbonate, in order to be able to leach metallurgical residue from the sulfuric leaching stage again. alkaline leaching
- the invention object of the present application discloses a method to maximize the leaching of copper and lead that includes sulfuric and citric leaching stages in order to remove the Cu and Pb present in the sludge, to subsequently proceed to alkaline leaching.
- the removal of Cu, Fe and Pb in early stages allows chemically modifying the fluff, leaving the silicon species more labile to leaching as shown in the results obtained in the present application.
- Patent US 7329396 describes a process for leaching a valuable metal from oxidizing materials, such as a lateritic nickel ore, comprising the step of leaching the ore with a leachant comprising a cationic salt (for example, magnesium chloride) and hydrochloric acid.
- a leachant comprising a cationic salt (for example, magnesium chloride) and hydrochloric acid.
- An additional metal chloride or oxidizer (such as that resulting from the leaching operation) may be added.
- the process comprises recovering a valuable metal from the ore comprising the steps of: leaching the ore with a leachant; separating a metal-rich leachate value from the ore in a first solid-liquid separation; oxidizing and neutralizing the value of the metal-rich leachate thus obtained; and separating a magnesium chloride solution from the leachate thus obtained in a second solid-liquid separation.
- the leaching solution is regenerated from the magnesium chloride solution.
- the regeneration of the leaching solution includes a step of producing magnesium oxide from the magnesium chloride solution.
- a difference of the invention with patent application US7329396 is that it is pointed out that a pH above 0.4 is preferred in order to precipitate hematite.
- the precipitation of iron hydroxides is totally unfavorable in the present invention, since the concentration ratio between silver and iron rises at 0.01 g Ag/g Fe, and consequently, the precipitation of iron hydroxides can carry away the silver present in solution.
- Patent application CA 2820631 A1 refers to processes that can be effective for treating various materials comprising various different metals. These materials can be leached with HCl to obtain a leachate and a solid. They can then be separated from each other and a first metal can be isolated from the leachate. Then a second metal can be isolated from the leachate. The first and second metals can each be substantially isolated from the leachate. This can be done by controlling the temperature of the leachate, adjusting the pH, further reacting the leachate with HCl, etc. The metals that can be recovered in the form of metal chlorides can eventually be converted to the corresponding metal oxides, thus allowing HCl recovery.
- the various metals can be chosen from aluminum, iron, zinc, copper, gold, silver, molybdenum, cobalt, magnesium, lithium, manganese, nickel, palladium, platinum, thorium, phosphorus, uranium, titanium, rare earth elements and rare metals. .
- the present invention differs from patent application CA2820631 A1 in that the former does not require temperatures above 90°C to efficiently carry out silver leaching, unlike the application that requires temperatures above 125°C. Furthermore, the leaching of the aluminum-containing material is carried out with a hydrochloric acid concentration starting at 18%, while the present invention requires hydrochloric acid concentrations of less than 140 g/L (or less than 11% w/w). .
- Figure I shows the process diagram of the method disclosed by the present invention.
- the invention describes a process for the production of silver concentrate from metallurgical waste, in particular, from waste containing copper, iron, lead, silicon, antimony and silver, and which may optionally contain elements such as arsenic and bismuth, which comprises: a copper leaching stage (I) from the metallurgical residue (1), where a first acid leaching solution (2) is used to obtain a first leaching solution rich in copper and iron, and optionally arsenic and bismuth (3) and a first leached fluff that has a reduced content of copper and iron, and optionally reduced in arsenic and enriched in lead and silicon (4), a stage (II) of leaching of the first leached fluff (4) where said first leached fluff (4) is processed with a first solution of a salt of a carboxylic acid (5), to obtain a second leached sludge depleted in lead (6) and a second leaching solution enriched in lead (7), a stage (III) of al
- the metallurgical residue to be processed is powder obtained through a metal smelting process.
- said powder obtained by means of a copper smelting process is foundry powder.
- the metallurgical waste has been subjected to a copper leaching process.
- said metallurgical residue was subjected to leaching with sulfuric acid.
- the metallurgical residue to be processed comprises the mineralogical species anglesite, coveline, copper spinels in the form CuOFe 2 O 3 , zinc spinels in the form ZnOFe 2 O 3 , magnetite, iron(lll) oxide, pyrite , scorodite, mucovite, kaolinite and lead(ll) sulfate.
- the copper contained in the metallurgical residue is present as copper sulfate, chalcocite, covelin and copper spinels in the CuOFe 2 O 3 form .
- the copper contained in the metallurgical residue is present in at least 50% in the form of copper spinel in the CuOFe 2 O 3 form .
- the silicon contained in the metallurgical residue is present as muscovite and kaolinite.
- the lead contained in the metallurgical residue is present as lead(ll) sulfate, galena or lead(ll) oxide.
- the lead is at least 95% as lead(ll) sulfate.
- the first acid leach solution comprises sulfuric acid and/or a refinery effluent.
- step (i) is carried out at a sulfuric acid concentration of between 150 and 300 g/L, more preferably at a sulfuric acid concentration of 250 g/L.
- step (i) is carried out at a temperature between 50 and 130°C, more preferably at a temperature of 85°C.
- step (i) is carried out for a time between 3 and 12 hours, more preferably at a residence time of 6 hours.
- step (i) is carried out at a solid concentration of between 5 and 20% w/w, more preferably at a solid concentration of 15% w/w.
- the carboxylic acid salt is sodium citrate.
- the sodium citrate solution has a molar concentration of sodium citrate between 0.5 and 1 M.
- stage (ii) the first leached fluff is fed to the sodium citrate solution in a mass ratio of 1:9.
- step (ii) is carried out at a temperature between 20°C and 60°C, more preferably at a temperature of 40°C.
- step (ii) is carried out for a residence time of between 1 and 23 h.
- step (ii) is carried out at a pH between 5.3 and 8.8. more preferably at a pH of 7.0.
- step (ii) the corresponding acid of the carboxylic acid salt is added for pH adjustment.
- step (ii) citric acid is added for pH adjustment.
- the pH adjustment in step (ii) is carried out with a 600 to 900 g/L citric acid solution.
- the base used in the leaching of step (iii) can be selected from potassium hydroxide, magnesium hydroxide or sodium hydroxide.
- the base that is added in stage (iii) is added in a ratio of between 5 and 10% w/w with respect to the total mass of the alkaline leaching solution, more preferably in a ratio of 6, 0% w/w with respect to the total mass of the alkaline leaching solution.
- the leaching reaction of stage (iii) is carried out at a temperature between 70 and 150°C, more preferably at a temperature of 130°C.
- the leaching reaction of stage (iii) is carried out for a residence time of between 1 to 12 hours, more preferably for a residence time of 3 hours.
- the acid used in the leaching of step (iv) is hydrochloric acid.
- the hydrochloric acid is supplied in a concentration that varies between 50 and 140 g/L.
- step (iv) the chloride environment is increased by addition of a chloride salt.
- step (iv) the chloride environment is increased by adding magnesium chloride.
- the chloride in stage (iv) is supplied in a concentration between 140 and 240 g/L.
- step (iv) is carried out at a pH between -1.5 and 0, preferably within the range -0.73 and -0.65.
- step (iv) is carried out at a temperature between 40 and 95°C.
- the neutralizing slurry of stage (v) of silver precipitation is selected from those between calcium hydroxide, calcium oxide, calcium carbonate, limestone, dolomitic limestone, magnesium carbonate, magnesium hydroxide or oxide of magnesium.
- the neutralizer slurry of silver precipitation stage (v) is a magnesium oxide slurry.
- step (v) is carried out at a temperature between 50 and 95°C.
- the neutralizer slurry added in stage (v) is supplied until a pH of between 3 and 7 is reached.
- stage (v) has a residence time of between 0.5 and 3 hours.
- the fifth solution rich in chloride from step (v) is sent to a magnesium chloride crystallization process.
- the fifth solution rich in chloride from stage (v) is recirculated to stage (iv) for silver precipitation.
- the sulfuric acid solution of step (vi) has a sulfuric acid concentration of between 60 and 275 g/L.
- the sulfuric acid solution of step (vi) is a sulfuric leaching solution for foundry powders.
- the sulfuric acid solution from stage (vi) is the first leaching solution rich in copper and iron, and optionally arsenic and bismuth from stage (i) whose acidity has been adjusted to between 60 and 275g/L.
- step (vi) of leaching of the silver precipitate is carried out at a temperature between 50 and 95°C.
- the carboxylic acid salt of step (vii) of leaching the first silver concentrate is preferably sodium citrate.
- the concentration of sodium citrate is between 0.5 and 1 M.
- stage (vii) of leaching the first silver concentrate is carried out at a temperature between 25°C and 90°C.
- stage (vii) of leaching the first silver concentrate is carried out at a solids content of between 5 and 10%.
- stage (vii) of leaching of the first silver concentrate is carried out for a period of 1 to 6 hours.
- the seventh leach solution is recycled to the leach stage (ii).
- the silver concentrate is composed of silver antimonate.
- the silver concentrate is composed of silver antimonate and lead antimonate.
- the first copper-rich leach solution is sent to a process for leaching copper from smelter dusts.
- the sixth leaching solution rich in copper, iron and optionally arsenic is sent to a process for leaching copper from foundry powders.
- the first copper-rich leach solution is sent to an arsenic abatement process.
- the sixth leaching solution rich in copper, iron and optionally arsenic is sent to an arsenic abatement process.
- the arsenic abatement process is selected from those that contemplate the production of ferric arsenate.
- the arsenic abatement process is a scorodite production process.
- Examples 8 to 10 2,550 g of a solution of 250 g/L of H 2 SO 4 were prepared, which were placed in a 4 L autoclave, where fluff was added that was previously subjected to a copper leaching process at a solids content of 15% p/p. The reactor was stirred at 300 rpm for 1 to 6 hours at 130°C. Once the reaction time was over, the pulp was filtered in a kitasate system. The results are presented in Table 3. Table 3. Results of sulfuric leaching examples 8 to 10
- a refinery effluent solution was prepared to which the concentration of sulfuric acid was adjusted to 250 g/L, which was placed in a 5 L glass reactor, where 450 g of sludge were added, which was previously subjected to a copper leaching process.
- the reactor was stirred at 300 rpm for 6 hours at 85°C. Once the reaction time was over, the pulp was filtered in a kitasate system.
- the results showed Cu leaching yield of 72.0%, Fe leaching yield of 62.0%, As leaching yield of 71.5%, Zn leaching yield of 57.0%. and a mass loss of 38.5%.
- Example 12 A solution was prepared with 40 L of water to which 14 kg of sodium citrate were added and the pH was adjusted to 7.0 with a 800 g/L citric acid solution. Once the reagents had dissolved, 6 kg of leached fluff were added according to example 3. The top fluff had a Pb content of 15.4%. The leaching was carried out at 20°C and stirred at 1,000 rpm for a period of 9 h. A Pb leaching efficiency of 94% was obtained, obtaining a leached sludge that reduced its mass by 24% with a Pb content of 1.19%.
- a solution was prepared with 2 L of water with a concentration between 323 and 368 g/L of sodium citrate at a pH between 5.3 and 8.8. The pH was adjusted with a 800 g/L citric acid solution. Once the reagents were dissolved, the fluff processed according to example 3 was added in a ratio of between 1.2 and 2.3 g of sodium citrate/g of fluff. The head fluff had a Pb content of between 15.0 and 15.1%. The leaching was carried out at between 30 and 60°C and agitated between 500 and 700 rpm for a period of between 2 and 4 h. The results are shown in Table 5. Table 5. Citrus Leaching Results Examples 13 to 19
- a pulp was prepared with a sodium hydroxide solution with a concentration between 5.4 and 8.7% p/p and leached sludge subjected to consecutive copper and lead leaching processes with a solid content between 5.0 and 7. 0% w/w.
- the pulp was placed in a 4 L autoclave and heated at a temperature between 100 and 140°C for between 1 and 6 hours at 600 rpm. Once the leaching time was over, the pulp was cooled and filtered in a kitasato system. The results are shown in Table 6. Table 6. Results examples 20 to 28
- a pulp was prepared with 6,230 mL of water to which 420 g of sodium hydroxide and 350 g of leached fluff were added, subjected to consecutive processes of copper and lead leaching, to obtain a concentration of 6.0% w/w. NaOH and 5.0% w/w solids.
- the pulp was placed in a 10 L glass reactor and heated at 90°C between 1 and 6 hours and stirred at 900 rpm. Once the leaching time was over, the pulp was cooled and filtered in a kitasato system.
- a solution was prepared with an HCl concentration between 54 and 160 g/L and a chloride concentration between 140 and 237 g/L.
- the chloride concentration was increased by addition of magnesium chloride hexahydrate.
- 180 g of pulp subjected to sulfuric and citric leaching processes were added, and on the other hand, pulp subjected to sulfuric, citric and alkaline leaching processes, such as those described in experiments 1 to 37.
- the pulp it was fed to a 5 L glass reactor, heated to 90°C and kept under constant stirring for 6 hours. Once the test was finished, the pulp was filtered in a kitasato system. The results of these tests are presented in Table 8.
- a silver precipitation solution with a concentration of 300 g/L of magnesium chloride was subjected to an evaporation process until said broth was concentrated at 500 g/L of magnesium chloride.
- a volume of 358 mL of said evaporation solution, 385 mL of concentrated hydrochloric acid and 94 mL of water were added to 274 g of sludge subjected to the sequential leaching processes described in examples 1 to 28 in a 5 L reactor.
- the reactor was heated to 90°C and kept under agitation. constant for 6 hours.
- the pulp was filtered in a kitasato system.
- the results showed a silver leaching yield of 86%, an iron leaching yield of 95% and a copper leaching yield of 94%. At least 98% of the leached iron was ferric ion.
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CA3143370A CA3143370A1 (en) | 2020-07-22 | 2020-07-22 | Procedure for producing silver concentrate from metallurgical residues |
PE2021002211A PE20220266A1 (es) | 2020-07-22 | 2020-07-22 | Procedimiento para la produccion de concentrado de plata a partir de residuos metalurgicos |
JP2022509099A JP7607948B2 (ja) | 2020-07-22 | 2020-07-22 | 冶金残留物から銀濃縮物を生成するための方法 |
CN202080053499.6A CN114341374A (zh) | 2020-07-22 | 2020-07-22 | 从冶金残余物生产银浓缩物的方法 |
PCT/IB2020/056900 WO2022018491A1 (es) | 2020-07-22 | 2020-07-22 | Procedimiento para la producción de concentrado de plata a partir de residuos metalúrgicos |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US4094668A (en) * | 1977-05-19 | 1978-06-13 | Newmont Exploration Limited | Treatment of copper refinery slimes |
US4244735A (en) * | 1979-07-27 | 1981-01-13 | Hazen Research, Inc. | Chloride leach process for recovering metal values in the presence of arsenic |
US4666514A (en) * | 1985-01-25 | 1987-05-19 | Austria Metall Aktiengesellschaft | Hydrometallurgical process for recovering silver from copper-electrolysis anode sludge |
-
2020
- 2020-07-22 WO PCT/IB2020/056900 patent/WO2022018491A1/es active Application Filing
- 2020-07-22 CN CN202080053499.6A patent/CN114341374A/zh active Pending
- 2020-07-22 PE PE2021002211A patent/PE20220266A1/es unknown
- 2020-07-22 JP JP2022509099A patent/JP7607948B2/ja active Active
- 2020-07-22 CA CA3143370A patent/CA3143370A1/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4094668A (en) * | 1977-05-19 | 1978-06-13 | Newmont Exploration Limited | Treatment of copper refinery slimes |
US4244735A (en) * | 1979-07-27 | 1981-01-13 | Hazen Research, Inc. | Chloride leach process for recovering metal values in the presence of arsenic |
US4666514A (en) * | 1985-01-25 | 1987-05-19 | Austria Metall Aktiengesellschaft | Hydrometallurgical process for recovering silver from copper-electrolysis anode sludge |
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