WO2014091456A1 - Process for recovering platinum group metals - Google Patents
Process for recovering platinum group metals Download PDFInfo
- Publication number
- WO2014091456A1 WO2014091456A1 PCT/IB2013/060909 IB2013060909W WO2014091456A1 WO 2014091456 A1 WO2014091456 A1 WO 2014091456A1 IB 2013060909 W IB2013060909 W IB 2013060909W WO 2014091456 A1 WO2014091456 A1 WO 2014091456A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pgm
- chloride
- containing material
- pgms
- chloride salt
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 40
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 21
- 239000002184 metal Substances 0.000 title claims abstract description 21
- -1 platinum group metals Chemical class 0.000 title claims abstract description 8
- 239000010953 base metal Substances 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 26
- 150000003841 chloride salts Chemical class 0.000 claims abstract description 25
- 150000003839 salts Chemical class 0.000 claims abstract description 20
- 238000005660 chlorination reaction Methods 0.000 claims abstract description 19
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 29
- 239000011734 sodium Substances 0.000 claims description 17
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 14
- 239000011780 sodium chloride Substances 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 239000012267 brine Substances 0.000 claims description 8
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 8
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical group [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 150000001805 chlorine compounds Chemical class 0.000 claims description 3
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 3
- 239000001103 potassium chloride Substances 0.000 claims description 3
- 235000011164 potassium chloride Nutrition 0.000 claims description 3
- 239000011833 salt mixture Substances 0.000 claims description 3
- 239000011363 dried mixture Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000012141 concentrate Substances 0.000 abstract description 26
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 abstract description 9
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052703 rhodium Inorganic materials 0.000 abstract description 7
- 239000010948 rhodium Substances 0.000 abstract description 7
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 abstract description 6
- 239000010931 gold Substances 0.000 abstract description 5
- 229910052741 iridium Inorganic materials 0.000 abstract description 5
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052763 palladium Inorganic materials 0.000 abstract description 5
- 229910052697 platinum Inorganic materials 0.000 abstract description 5
- 229910052707 ruthenium Inorganic materials 0.000 abstract description 5
- 229910052802 copper Inorganic materials 0.000 abstract description 4
- 239000010949 copper Substances 0.000 abstract description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052737 gold Inorganic materials 0.000 abstract description 4
- 229910052759 nickel Inorganic materials 0.000 abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 3
- 229910017052 cobalt Inorganic materials 0.000 abstract description 3
- 239000010941 cobalt Substances 0.000 abstract description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052762 osmium Inorganic materials 0.000 abstract description 3
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 abstract description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 12
- 239000000460 chlorine Substances 0.000 description 12
- 229910052801 chlorine Inorganic materials 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000002253 acid Substances 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- 238000011084 recovery Methods 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910001510 metal chloride Inorganic materials 0.000 description 6
- 150000002739 metals Chemical class 0.000 description 6
- 238000005342 ion exchange Methods 0.000 description 5
- 239000010453 quartz Substances 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 238000002386 leaching Methods 0.000 description 4
- 238000011068 loading method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 125000000129 anionic group Chemical group 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 235000011121 sodium hydroxide Nutrition 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-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
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000005708 Sodium hypochlorite Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229960004424 carbon dioxide Drugs 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 229910001925 ruthenium oxide Inorganic materials 0.000 description 2
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- HYHCSLBZRBJJCH-UHFFFAOYSA-M sodium hydrosulfide Chemical compound [Na+].[SH-] HYHCSLBZRBJJCH-UHFFFAOYSA-M 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 230000036967 uncompetitive effect Effects 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G55/00—Compounds of ruthenium, rhodium, palladium, osmium, iridium, or platinum
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/0009—Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G55/00—Compounds of ruthenium, rhodium, palladium, osmium, iridium, or platinum
- C01G55/004—Oxides; Hydroxides
-
- 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
- C22B11/06—Chloridising
Definitions
- This invention relates to a process for recovering platinum group metals (PGMs - ruthenium, rhodium, palladium, osmium, iridium, platinum and gold) and base metals (copper, nickel and cobalt) from ores, concentrates, tailings as well as recycled materials containing PGMs.
- PGMs platinum group metals
- ruthenium, rhodium, palladium, osmium, iridium, platinum and gold base metals (copper, nickel and cobalt) from ores, concentrates, tailings as well as recycled materials containing PGMs.
- Chlorination of ore concentrates have been around for decades, either in the presence of carbon or carbon monoxide, in the presence of a chloride salt such as sodium chloride, in a salt bath such as sodium chloride or combinations of the aforementioned.
- a chloride salt such as sodium chloride
- a salt bath such as sodium chloride or combinations of the aforementioned.
- the only processes operating commercially are the carbo-chlorination of titanium and zirconium concentrates and the dry chlorination of magnesium concentrates.
- Carbo-chlorination introduces further cost and safety issues, while not giving any recovery advantage.
- the relatively low salt addition compromises the recovery of the insoluble PGM's.
- chlorine needs to be recycled, it will need to be passed through a clean-up stage to remove carbon dioxide and/or residual carbon monoxide.
- the higher leaching acidity has significant cost implications with regards to acid neutralization and/or acid regeneration.
- a chloride melt is prepared from chloride salts (sodium, potassium or magnesium). Ore or matte is mixed with KCI, the quantity is stoichiometric with the PGMs and base metals present. This mixture is introduced into the chloride melt and gaseous chlorine is introduced at 300 - 650 °C to form the PGM and base metal chlorides. The PGM chlorides then react with the KCI to form the corresponding PGM sails.
- the problem with this process is that the molten salt bath chlorination would be operationally very difficult to control. The water volumes needed after leaching would be huge and the salt must be crystallized before use. Both capital and operating costs would be prohibitively high, in addition, the lower temperatures of reaction compromise the recovery of the insoluble PG!vYs.
- a method of recovering platinum group metals PGMs - ruthenium, rhodium, palladium, osmium, iridium, platinum and gold
- PGM-containing material such as PGM bearing ores, concentrates, tailings as well as recycled materials containing PGMs (including but not limited to spent catalytic converters)
- the PGM-containing material is mixed with a chloride salt such as potassium chloride or sodium chloride, preferably sodium chloride, at a ratio of 40% to 300% by mass, preferably 50% to 200%, preferably 50% to 150%, preferably 60% to 100%, more preferably 60% to 80%, most preferably 60% to 75% by mass on a dry weight basis, chloride to PGM containing material, and the mixture is then reacted with chlorine gas in a chJorination reaction, in a suitable chlorination reactor, at a temperature of 750 to 850°
- the reaction can be conducted in any suitable reactor, including but not limited to a static vessel alike vertical shaft reactor, a tubular reactor, a multiple hearth reactor or a rotary device, preferably a vertical shaft reactor.
- the chloride salt is from a chloride brine, which may be supplemented with solid chloride salt.
- the PGM-containtng material/chloride salt mixture is spray dried such that more than 50% of the spray dried mixture falls in the particle size range 300 [xm to 1.2 mm, and may be calcined at a temperature of 200 to 250 °C, prior to the chlorination reaction.
- no carbon/CO is introduced to the reactor during the chlorination reaction.
- the mixture becomes a tacky partial melt and PGMs and base metals in the PGM-contain/ng material are selectively chlorinated, resulting in the formation of PGM chloride salts of the type Na 2 PtC! 6 , Na 2 irCI 6t Na 2 RuCi 6 , Na 2 PdCI 4 , Na 3 RhCI 6 and NaAuCI 4t as well as the various base metal chlorides.
- the chlorination reaction typically takes place under a pressure of 1 - 2 bar and the chlorine gas may be introduced at a rate of 40 to 60 g/h for 5 to 15 minutes, followed by a rate of 10 to 15 g/h for 40 to 60 minutes.
- the residue may be leached with 0.1 to 1.5 M HCl to form a ieachate containing dissolved PGM chloro acids and base metal chlorides which is filtered, and PGMs and base metals may be recovered from the filtered ieachate by conventional technology, i.e. cementation, ion exchange or solvent extraction.
- the present invention entails the chlorination of PGM bearing ores, concentrates, tailings as well as recycled materials containing PGMs (including but not limited to spent catalytic converters) in the presence of a chloride salt like but not limited to sodium chforide (or other chloride salts like potassium chloride) to selectively convert the PGMs to their respective chloro-saits.
- the reaction can be conducted in any suitable reactor, including but not limited to a static vessel alike a vertical shaft reactor, a tubular reactor or a rotary device.
- Refractory ore concentrate is mixed with sodium chloride brine (40% to 300% by mass on a dry weight basis, chloride to ore concentrate) and then dried (typically spray-dried, such that the majority of the spray dried material fails in the size range 300 pm to 1.2 mm) and may be calcined at a temperature of 130 to 250 °C.
- Solid sodium chloride can also be mixed and blended with the ore concentrate before calcination. This mixture is then reacted with chlorine at a temperature of 750 to 850°C in a vertical shaft reactor for 60 to 120 minutes.
- chlorine gas at the bottom of the reactor at a rate of 40 - 60 g/h under a pressure of 1 to 2 bar for 5 - 15 minutes, and then the chlorine flow rate is reduces to 10 - 15 g/h for a further 40 - 60 minutes.
- No carbon/CO is introduced to the reactor. The advantage of this is that other metal species in the feed materia! are not converted to their respective metallic forms. The reaction mass becomes a tacky partial melt.
- the PGMs and base metals in the ore concentrate are selectively chlorinated, resuiting in the formation of PGM chloride salts of the type Na 2 PtCI 6 , Na 2 lrCI B , Na 2 RuCI 6 , Na 2 PdCI 4 , Na 3 RhCI 6 and NaAuCI 4 , as well as the various base metal chlorides. Some iron chloride and small quantities of other metal chlorides are also formed.
- PGM chloride salts are highly soluble and, after cooling, are leached from the residue with weak hydrochloric acid (0.1-1.0 M HCl solution), forming the corresponding PGM ch!oro-acids of the type H 2 PtCI 6 (chloroplatinic acid), H 2 lrCI 6 (chSoroiridic acid), H 2 RuCI 6 , H 2 PdCI 4 (chloropalladic acid), H 3 RhCI 6> and HAuCI 4 (chloroauric acid).
- the barren solids are separated from the PGM- rich hydrochloric acid through filtration.
- PGM metal recovery can then be done by conventional technology, i.e. cementation, ion exchange or solvent extraction.
- the combination of the high salt content and high temperature of the present invention lead to a higher recovery of PGMs including the rhodium, ruthenium and iridium than prior art processes.
- the achieved recoveries are similar to the conventional process of smelting and converting.
- Other advantages of this process are that it produces a mixed PGM metal concentrate (>70% PGM metals) which is significantly richer than a conventional smelter converter matte (0.2% PGM metals) which can bypass the Base Metals Refinery and be sent directly to the Precious Metals Refinery.
- the quartz tube has a chlorine gas inlet at the bottom and a chlorine gas outlet at the top.
- the unreacted chlorine leaving the reactor is directed to a 7% - 12% NaOH scrubber to produce sodium hypochlorite.
- the PGM and base metals barren residue is ready for disposal. Analyze the barren residue for PGMs and base metals.
- the Ieach liquor is analyzed for PGMs and base metals.
- the Ieach liquor is subjected to anionic resin exchange to recover all the PGMs in anionic form. Once the resin is sufficiently loaded with PGMs, it is treated and incinerated to recover the PGMs as a mixed PGM metal sponge containing more than 70% PGM metals.
- the Ieach solution is subjected to cationic ion exchange to remove ail iron from the solution.
- the iron is stripped from the resin with 6M HCl as ferric chloride, where after the resin is reused.
- the base metals are then precipitated from the Ieach liquor as a 50% mixed metal sulfide product, using NaHS and NaOH. 18. Finally the minor metals (Mg, Al, Ca & Cr) are precipitated with sodium carbonate.
- the remaining liquid is NaCl brine, which is recycled to the front-end of the process.
- Tests were conducted on a number of PGM concentrates covering high chrome concentrates, high sulfur concentrates, high PGM loading concentrates (>500 g/ton PGM 4E) and low PGM loading concentrates ( ⁇ 70 g/ton PGM 4E). in all cases, the PGM and Base Metal extractions were comparable with conventionai smelting.
- the high sulfur concentrate had a PGM loading of 108 g/t 4E (Pt, Pd, Rh & Au) and a base metal loading of 8.6% (Cu, Ni & Co).
- the process of the present invention extracted 99.7% of the PGMs and 99.7% of the base metals.
- the process of the present invention is applicable across the range of PGM concentrates available in industry.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacture And Refinement Of Metals (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AP2015008588A AP2015008588A0 (en) | 2012-12-14 | 2013-12-13 | Process for recovering platinum group metals |
| ZA2015/05013A ZA201505013B (en) | 2012-12-14 | 2015-07-13 | Process for recovering platinum group metals |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA2012/09531 | 2012-12-14 | ||
| ZA201209531 | 2012-12-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2014091456A1 true WO2014091456A1 (en) | 2014-06-19 |
Family
ID=50933826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2013/060909 WO2014091456A1 (en) | 2012-12-14 | 2013-12-13 | Process for recovering platinum group metals |
Country Status (3)
| Country | Link |
|---|---|
| AP (1) | AP2015008588A0 (no) |
| WO (1) | WO2014091456A1 (no) |
| ZA (1) | ZA201505013B (no) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106335933A (zh) * | 2016-08-30 | 2017-01-18 | 昆明贵容电子材料有限公司 | 一种水溶性硝酸钯的制备方法 |
| CN106335932A (zh) * | 2016-08-30 | 2017-01-18 | 昆明铂磊科技有限公司 | 一种三氯化钌的生产工艺 |
| CN106430333A (zh) * | 2016-08-30 | 2017-02-22 | 昆明铂磊科技有限公司 | 一种氯化钯的生产工艺 |
| CN110036122A (zh) * | 2016-10-30 | 2019-07-19 | 耶达研究及发展有限公司 | 用于从废催化剂回收铂族金属的方法 |
| US11248278B1 (en) | 2020-12-11 | 2022-02-15 | Phoenix Tailings, Inc. | Metal recovery using molten salt and related systems |
| WO2022125872A1 (en) * | 2020-12-11 | 2022-06-16 | Phoenix Tailings, Inc. | Metal recovery using molten salt and related systems |
| US11427887B2 (en) | 2017-11-27 | 2022-08-30 | The Board Of Trustees Of The University Of Illinois | Extraction of selected platinum-group metals from supported catalyst |
| WO2023247913A1 (en) * | 2022-06-22 | 2023-12-28 | Johnson Matthey Public Limited Company | Recycling of catalyst coated membrane components |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5238662A (en) * | 1987-07-31 | 1993-08-24 | Chevron Research Company | Processes for recovering precious metals |
| US20070131058A1 (en) * | 2003-07-22 | 2007-06-14 | Mario Bergeron | Process for recovering platinum group metals from ores and concentrates |
| US20090301260A1 (en) * | 2008-06-06 | 2009-12-10 | Lawrence Shore | Efficient process for previous metal recovery from fuel cell membrane electrode assemblies |
| US7968065B2 (en) * | 2003-09-30 | 2011-06-28 | Jaguar Nickel Inc. | Process for the recovery of value metals from base metal sulfide ores |
-
2013
- 2013-12-13 WO PCT/IB2013/060909 patent/WO2014091456A1/en active Application Filing
- 2013-12-13 AP AP2015008588A patent/AP2015008588A0/xx unknown
-
2015
- 2015-07-13 ZA ZA2015/05013A patent/ZA201505013B/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5238662A (en) * | 1987-07-31 | 1993-08-24 | Chevron Research Company | Processes for recovering precious metals |
| US20070131058A1 (en) * | 2003-07-22 | 2007-06-14 | Mario Bergeron | Process for recovering platinum group metals from ores and concentrates |
| US7968065B2 (en) * | 2003-09-30 | 2011-06-28 | Jaguar Nickel Inc. | Process for the recovery of value metals from base metal sulfide ores |
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| US11427887B2 (en) | 2017-11-27 | 2022-08-30 | The Board Of Trustees Of The University Of Illinois | Extraction of selected platinum-group metals from supported catalyst |
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Also Published As
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| AP2015008588A0 (en) | 2015-07-31 |
| ZA201505013B (en) | 2016-12-21 |
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