WO1998008585A1 - Lixiviation de mineraux chalcogenes metalliques (de type sulfure) au moyen d'agents oxydants et chelateurs - Google Patents

Lixiviation de mineraux chalcogenes metalliques (de type sulfure) au moyen d'agents oxydants et chelateurs Download PDF

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Publication number
WO1998008585A1
WO1998008585A1 PCT/US1997/015825 US9715825W WO9808585A1 WO 1998008585 A1 WO1998008585 A1 WO 1998008585A1 US 9715825 W US9715825 W US 9715825W WO 9808585 A1 WO9808585 A1 WO 9808585A1
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Prior art keywords
metal
mineral
acid
chalcogenide
leaching
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PCT/US1997/015825
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English (en)
Inventor
Patrick A. Tuzinski
Lloyd M. Petrie
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Geochem Technologies, Inc.
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Priority to AU41842/97A priority Critical patent/AU4184297A/en
Publication of WO1998008585A1 publication Critical patent/WO1998008585A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
    • C22B3/16—Extraction of metal compounds from ores or concentrates by wet processes by leaching in organic solutions
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
    • C22B3/16—Extraction of metal compounds from ores or concentrates by wet processes by leaching in organic solutions
    • C22B3/1608—Leaching with acyclic or carbocyclic agents
    • C22B3/1616—Leaching with acyclic or carbocyclic agents of a single type
    • C22B3/165—Leaching with acyclic or carbocyclic agents of a single type with organic acids
    • 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

  • U.S. Pat. No. 1 ,672,924 discloses the recovery of sulfur from ferrous sulphide and pyrhotite by treatment with sulphurous acid, giving an oxidized form of iron and elemental sulfur as products.
  • U.S. Pat. No. 3,896,208 discloses recovery of metals from copper and iron sulfide minerals by treatment with hydrochloric acid and oxygen or air at atmospheric pressure and temperatures above 105°C. Free sulfur is a by-product.
  • U.S. Pat. 4,980,134 discloses the leaching of gold and other noble metals using an oxidizing agent and a lixiviant such as sodium chloride, ammonium chloride, etc. which acts to form a soluble complex with the noble metal.
  • U.S. Pat. 5,147,617 discloses recovering gold from ores by treating the ore with an oxidizing agent and an anion exchange resin for absorption of the gold in the presence of dissolved oxygen
  • U.S. Pat. 5,260,040 discloses the extraction of gold from gold-bearing material by treating with an acidic lixiviant solution containing thiourea and ferric ions and also a complexing agent such as EDTA.
  • the prior art disclosures do not provide a leaching solution with the characteristics of the present invention, that of a solution which acts at an approximately neutral pH, at ambient temperatures and with little or no environmental toxicity, to leach metals from chalcogenide minerals.
  • chalcogenide refers to metalliferous minerals which contain one or more of the chalcogen elements.
  • the chalcogen elements are sulfur (S), arsenic (As), antimony (Sb) selenium (Se) and tellurium (Te).
  • the most common chalcogenide minerals are metal sulfides, containing a sulfide form of sulfur (S).
  • S sulfur
  • Sb arsenic
  • Te antimony
  • Te tellurium
  • the most common chalcogenide minerals are metal sulfides, containing a sulfide form of sulfur (S).
  • S sulfur
  • sulfide-type mineral is used for minerals with one or more metal cation combined with one or more of As, Sb, Se, or Te, whether separate from, or in association with, other sulfide minerals.
  • rock matrix refers to any ore, geologic host-rock, processed mineral concentrates, or any mine waste material such as fine tailings and* coarse waste rock, in which the chalcogenide minerals are found.
  • This invention is a near neutral pH, two-component, aqueous chemical leaching solution, comprised of any suitable oxidizing agent and any suitable chelating agent, both in sufficient concentration to effect a useful rate of metal ion extraction, and maintain the solubility of said metal ions, from chalcogenide minerals in target ores, concentrates, or mine waste material.
  • the methods used in the prior art do not provide the advantages of the processes of this disclosure. These advantages include the use of ambient temperature and pressure, reaction within minutes, the use of environmentally-benign chemicals, and reaction at neutral to slightly alkaline pH. Because of these advantages, the processes of this disclosure may be used in heap leach mining and in in situ leach mining of sulfide ores containing large amounts of acid-reactive carbonate rocks, such as limestone or dolomite. These processes avoid the use of toxic chemicals such as the use of cyanide solution to extract precious metals.
  • the aqueous leaching solutions of this invention are comprised of an oxidizing agent and a chelating agent. These solutions may be used to leach the following metals: copper, Cu; zinc, Zn; lead, Pb; iron, Fe; bismuth, Bi; cadmium, Cd; cobalt, Co; molybdenum, Mo; nickel, Ni; gallium, Ga; germanium, Ge; gold, Au; silver, Ag; indium, In; mercury, Hg; platinum, Pt; palladium, Pd; rhodium, Rh; ruthenium, Ru; iridium, Ir; osmium, Os; rhenium, Re; thallium, Tl; tin, Sn; and vanadium, V, from metal chalcogenide minerals.
  • the leached metals will exist as chelated metal ions in the post-leach solution.
  • the chalcogenide elements S, As, Sb, Se, and Te also can be recovered by this invention. These elements will exist in post-leach solution in either fine, solid phase, native element form or as dissolved oxyanions.
  • the metal chalcogenide minerals which are leached in this invention are usually referred to as sulfides, arsenides, antimonides, selenides, and tellurides.
  • These minerals include, but are not limited to, the following: argentite (or acanthite), pyrargyrite, proustite, polybasite, stephanite, hessite, calaverite, petzite, sylvanite, bismuthinite, covellite, chalcocite, bornite, chalcopyrite, cubanite, enargite, stannite, tennantite, tetrahedrite, sperrylite, cooperite, stibiopalladinite, braggite, vysotskite, laurite, molybdenite, millerite, niccolite, siegenite, cobaltite, skutterudite, smaltite, pentlandite, ger
  • the chalcogenide element is of a (2-) or (3-) or (1-) valence.
  • the chalcogenides Upon oxidation, the chalcogenides become either the elemental (native) form, e.g., S°, Se°, Te°, As", or Sb°, which are typically fine amorphous particles, as observed in lab tests, or undergo further oxidation to soluble oxyanions.
  • oxyanions such as bisulfite, bisulfate, thiosulfate, dithionite, and dithionate, and analogous species for the other chalcogens, are expected to be formed and present in the post leach solutions.
  • the metal cation remained at the same valence in the chelated metal form as it was in the original mineral form.
  • iron cations for minerals with ferrous iron, Fe 2+ , in their structure, the oxidant in the leach solution is expected to oxidize ferrous iron to ferric iron, Fe 3+ in a soluble chelated form.
  • copper in the mineral chalcocite is Another exception.
  • the leach solution will oxidize structural cuprous copper, Cu' ⁇ in the mineral to cupric copper, Cu 2+ in a soluble chelated form.
  • the chemical formulation of this invention a near-neutral oxidant + chelate aqueous solution for mineral leaching, is simple and is also intended to be flexible.
  • the variability in the type of ingredients, and in the concentration of the ingredients is dependent upon the expected metal chalcogenide content in the rock matrix of ore or waste to be leached, and the desired concentration of dissolved metals in the reacted leach solution, also known as the "post-leach solution” or the "pregnant solution”.
  • the post-leach solution also known as the "post-leach solution” or the "pregnant solution”.
  • oxidant For every molar equivalent of metal to be leached, one molar equivalent of oxidant is required to break the chalcogenide bond, and from one-half to five molar equivalents of chelate are required to effect the high solubilization or leach efficiency level desired.
  • a preferred range is 1 to 2 molar equivalents of chelate for every molar equivalent of metal. Additional oxidant may be consumed due to losses by extraneous side reactions.
  • the leach solution is prepared in advance of use. This solution is injected into rock matrix, such as an ore deposit for solution mining or applied onto broken or processed ore rock or waste rock or tailings.
  • Any oxidizing agent having the following characteristics may be used with this invention: water soluble in oxidized and reduced form, of sufficient oxidative power to oxidize chalcogenide elements, and not of sufficient oxidative power to substantially oxidize the chelating agent.
  • Suitable oxidizing agents include, but are not limited to, hydrogen peroxide, dissolved air, dissolved oxygen, chelated ferric iron, sodium perborate, potassium iodate, sodium percarbonate, sodium hypochlorite (bleach), potassium monopersulfate, sodium persulfate, chlorine, bromine, and iodine.
  • the following oxidizing agents have been tested and found suitable: potassium monopersulfate, sodium hypochlorite solution at 0.01%, 0.1%, and 1 % by weight, water soluble polymer containing molecular bromine at 54% by weight, sodium persulfate, molecular iodine in excess potassium iodide, hydrogen peroxide, sodium perborate tetrahydrate in sodium carbonate matrix, potassium iodate, and sodium percarbonate in sodium carbonate.
  • the oxidant concentration is typically between 0.01 to 0.5 moles/liter in water, depending on the concentration of metal chalcogenide in the ore or waste matrix, and the anticipated level of adverse reactions that consume additional oxidant.
  • the quantity used is calculated on the basis of the active oxidizing species or compound, for example, when formulating with bleach, the basis is on the active ingredient HOC1 (molarity and/or weight) instead of NaClO. It is important to note that any suitable oxidant can be used.
  • Any chelating agent having the following characteristics may be used with this invention: is soluble in water, forms a metal chelate complex which is water-soluble, has affinity for at least one metal in said metal chalcogenide mineral, and is resistant to oxidation by said oxidizing agent.
  • Suitable chelating agents include, but are not limited to diethylenetriaminepentaacetic acid (DTP A), ethylenediaminetetraacetic acid (EDTA), ethyleneglycol bis(aminoethyl)-tetraacetic acid (EGTA), hydroxyethylethylenediaminetriacetic acid (HEDTA or HEETA), nitrilotriacetic acid (NT A), triethylenetetraminehexaacetic acid (TTHA), tartaric acid, citric acid (cit), gluconic acid, 5-sulfosalicylic acid (5-SSA), ethylenediamine (en), triethylenetetramine (trien), triaminotriethylamine (tren), triethanolamine (TEA), N-hydroxyethylethylenediamine (hen), o-phenanthroline (phen), l,2-dihydroxybenzene-3,5-disulfonic acid, disodium salt (also known as disulfopyrocatechol, or
  • the chelate concentration is typically between 0.05 to 1.0 moles/liter in water and is coupled to the oxidant concentration used, which is in turn dependent on the grade of metal chalcogenide to be leached. By weight, a solution concentration as high as 25 weight % is possible, however above this level chelate solutions tend to become significantly more viscous than water and become less effective.
  • the quantity of chelate used is calculated on the basis of the free chelate species or compound. It is important to note that any suitable chelant can be used.
  • the pH of the pre-leach oxidant + chelate solution must be between pH 2.5 and 12, with a preferred range being between pH 5 and 9.
  • the pH of the pre-leach solution should not be lower than pH 5.5 so as to prevent acidic dissolution of the host rock
  • Any appropriate chemical compound(s) that provides acidity or alkalinity may be used to adjust the pH of the pre-leach solution.
  • useful compounds include hydrochloric acid, sodium hydroxide, and potassium hydroxide.
  • Example 1 Leaching Rates Over Time:
  • chelant 4.19 millimoles EDTA, prepared from ethylenediaminetetraacetic acid, disodium salt (Na 2 EDTA) reagent, fluid: distilled, deionized water (DDIW), initial pH: 8 ⁇ 0.1 , adjusted with dilute HC1 and NaOH, temperature: 25 ⁇ 0.2 °C (initial; and maintained).
  • the temperature, pH, and Eh (oxidation/reduction potential, or ORP) parameters were monitored using probes and computerized data acquisition.
  • Gangue is a term used in geology and mineral extraction fields that is defined as rock matrix or solid material which hosts (contains) the minerals of value, but which has no value in and of itself; it is the bulk or host or waste material not being sought for its value.
  • the dolomite was added to simulate conditions present if the galena were present in a dolomite ore body or similar carbonate host rock or mine waste matrix.
  • EDTA chelant resulted in a greater than 70% recovery of soluble Pb occurring within 10 minutes after the start of leaching. With the mixture of sodium perborate and EDTA, greater than 70% Pb recovery occurred within 40 minutes. With sodium hypochlorite bleach and EDTA (active oxidant was HOC1), the reaction was slower as indicated by the very low Pb extraction after 60 minutes, which was under 5% recovery.
  • Bio-D-Leachant iodine, I 2 ; and sodium perborate tetrahydrate, NaBO 3 »4H 2 O, which is a dry source of hydrogen peroxide.
  • Batch leaching tests were conducted to examine how the concentration of the chelant in the leach solution might affect the degree of metal extraction from a mineral sulfide matrix.
  • bleach, EDTA, dolomite and galena were combined at nominal Na 2 EDTA concentrations of 1 wt%, 2 wt% -and 5 wt%, respectively.
  • the three mineral types added were galena, PbS; chalcopyrite, CuFeS 2 , and sphalerite, ZnS.
  • One small batch was mixed in the same manner and with identical chemical formulation as the 5 wt% Na 2 EDTA solution described in example 3, except that in addition to the 0.15 grams (0.63 mmol) of PbS added, exactly 0.0290 grams (0.30 mmol) of ZnS and 0.0088 grams (0.037 mmol) of CuFeS 2 ere added as well.
  • a slight compensative addition of bleach oxidant was also made to keep the oxidant-to-metal ratio equimolar.
  • Pb (as the lead sulfide galena, PbS), 1.5% Zn, (as the zinc sulfide sphalerite, ZnS), 0.6% Cu, (as the copper-iron sulfide chalcopyrite, CuFeS 2 ), 2.2% Fe, (from pyrite, FeS 2 , and chalcopyrite, CuFeS 2 ), and the remainder, about 2.00 grams, as dolomite, (Ca,Mg)CO 3 , oxidant: 2.56 millimoles H 2 O 2 , hydrogen peroxide from 30 wt% reagent, chelant: 9.75 ⁇ 0.25 millimoles (see list below for chelate types), fluid: 22.1 + 0.1 grams, mixture of DDIW + dissolved chelant, initial pH: 8.0 ⁇ 0.1 , adjusted with dilute HC1 and NaOH.
  • the cobaltite was in a dolomite matrix, the tetrahedrite was in a siderite (FeCO 3 ) matrix, and the tennantite was in a dolomite matrix.
  • dolomite (low-metals) gangue or 2.50 g. tetrahedrite ore (in siderite), or 0.50 g. tennantite ore + 2.00 g. dolomite (low-metals) gangue
  • oxidant 2.56 millimoles H 2 O 2 , from 30 wt% reagent (for initial tests), and 1.98 millimoles H 2 O 2 , from 30 wt% reagent (for after 28 day tests)
  • chelant 9.5 + 0.1 millimoles MgEDTA (for initial tests), prepared from a ethylenediaminetetraacetic acid, magnesium disodium salt solution, and 9.5 + 0.1 millimoles DTPA, from diethylenetriaminepentaacetic acid, pentasodium salt solution (for after 28 day tests), fluid: 22.1 + 0.2 grams, mixture of DDIW + dissolved chelant, initial pH: 8.0 + 0.1 , adjusted with dilute HC1 and Na
  • the ingredients were combined in 35 mL plastic bottles; capped and mixed with rotation for only 1 hour, then sampled for soluble metals by withdrawing 1 mL of postleach solution and filtering. The samples were immediately resealed and allowed to continue mixing for 12 days longer, and sampled again for soluble metals. Bottles were re-sealed, mixing was stopped and they were left undisturbed for an additional 16 days. Each sample was then drained of the former MgEDTA leach solution, and fresh peroxide + DTPA solution was added. Bottles were re-capped and allowed to mix with rotation for only 2 hours; then sampled again for soluble metals on the same day.
  • Table 5 Extraction Results Of Leaching Different Chalcogenides COBALTITE %Extr. %Extr. %Extr. %Extr. %Extr. %Extr. %Extr. %Extr. %Extr. %Extr. %Extr. %Extr. %Extr. %Extr. Time Chelant Co Ni Cu Fe S As Sb
  • Tennantite + dolomite mix (partial analysis): 2.25% Cu, 2.76% Fe, 0.09% Zn, 2.08% S, 0.17% As, 0.20% Sb, 17.4% Ca, 9.4% Mg.

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Abstract

La présente invention concerne une solution dissolvante aqueuse contenant un agent oxydant et un agent chélateur. On peut l'utiliser pour extraire des valeurs métalliques dans des minéraux chalcogènes métalliques, y compris les sulfures de métaux et les minéraux métalliques de types sulfures et les déchets miniers. La solution dissolvante s'utilise à température ambiante et à un niveau de pH proche de l'état neutre. L'invention permet d'obtenir une solubilisation de valeurs métalliques à partir de minéraux chalcogènes métalliques.
PCT/US1997/015825 1996-08-26 1997-08-19 Lixiviation de mineraux chalcogenes metalliques (de type sulfure) au moyen d'agents oxydants et chelateurs WO1998008585A1 (fr)

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AU41842/97A AU4184297A (en) 1996-08-26 1997-08-19 Leaching of metal chalcogenide (sulfide-type) minerals with oxidizing and chelating agents

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US70324696A 1996-08-26 1996-08-26
US08/703,246 1996-08-26

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002099145A1 (fr) * 2001-06-07 2002-12-12 Elcogas, S.A. Procede de recuperation de metaux a partir de cendres volantes generees dans une centrale thermique du type a gazeification integree a cycle combine (gicc)
US7004326B1 (en) * 2004-10-07 2006-02-28 Inco Limited Arsenide depression in flotation of multi-sulfide minerals
WO2008003808A1 (fr) * 2006-07-03 2008-01-10 Universidad De Sevilla Procédé de récupération du germanium présent dans les cendres de charbon
US20110041654A1 (en) * 2009-08-24 2011-02-24 Manabu Manabe Method of heap or dump leaching of copper from copper sulfide ore
WO2014179134A1 (fr) * 2013-04-30 2014-11-06 Newmont Usa Limited Procédé pour le traitement de matière minérale contenant du carbonate avide d'acide et du métal précieux dans des minéraux sulfurés
US9117965B2 (en) 2011-10-28 2015-08-25 Dow Global Technologies Llc Method of manufacture of chalcogenide-based photovoltaic cells
US9346899B2 (en) 2011-10-31 2016-05-24 Rohm And Haas Company Polymers having chelating functionality
US9376373B2 (en) 2011-10-31 2016-06-28 Rohm and Haas Company Dow Global Technologies LLC Vinyl monomers having chelating functionality
WO2018072029A1 (fr) * 2016-10-19 2018-04-26 The University Of British Columbia Procédé de lixiviation de sulfures métalliques au moyen de réactifs possédant des groupes fonctionnels thiocarbonyle
CN109776606A (zh) * 2019-03-12 2019-05-21 中南大学 一种有机磷酸化合物及其合成方法和作为黄铜矿捕收剂的应用
CN109911911A (zh) * 2019-04-11 2019-06-21 杨天睿 一种含杂质滑石泥的增白方法及滑石
JP2019188379A (ja) * 2018-04-27 2019-10-31 清水建設株式会社 セレン含有土壌・岩石の処理方法
WO2019213694A1 (fr) * 2018-05-09 2019-11-14 Technological Resources Pty. Limited Lixiviation de minerais contenant du cuivre
US10526685B2 (en) 2015-10-30 2020-01-07 Technological Resources Pty. Limited Heap leaching
CN110662818A (zh) * 2017-05-26 2020-01-07 沙特阿拉伯石油公司 油田应用中的铁硫化物移除
US10563287B2 (en) 2017-04-06 2020-02-18 Technological Resources Pty. Limited Leaching copper-containing ores
US10781502B2 (en) 2015-04-17 2020-09-22 The University Of British Columbia Process for leaching metal sulfides with reagents having thiocarbonyl functional groups
CN112763524A (zh) * 2020-12-30 2021-05-07 上海大学 一种GCr15轴承钢中碳化物的三维腐刻方法
CN115772607A (zh) * 2022-12-12 2023-03-10 昆明理工大学 一种利用超声强化配位剂高效浸出黄铜矿的方法

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Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002099145A1 (fr) * 2001-06-07 2002-12-12 Elcogas, S.A. Procede de recuperation de metaux a partir de cendres volantes generees dans une centrale thermique du type a gazeification integree a cycle combine (gicc)
ES2178612A1 (es) * 2001-06-07 2002-12-16 Elcogas S A Procedimiento para la recupracion de metales a partir de las cenizas volantes generadas en una central termica de tipo gasificacion integrada en ciclo combinado (gicc).
US7004326B1 (en) * 2004-10-07 2006-02-28 Inco Limited Arsenide depression in flotation of multi-sulfide minerals
WO2008003808A1 (fr) * 2006-07-03 2008-01-10 Universidad De Sevilla Procédé de récupération du germanium présent dans les cendres de charbon
ES2293831A1 (es) * 2006-07-03 2008-03-16 Universidad De Sevilla Procedimiento para la recuperacion del germanio presente en cenizas de carbon.
US20110041654A1 (en) * 2009-08-24 2011-02-24 Manabu Manabe Method of heap or dump leaching of copper from copper sulfide ore
US8287623B2 (en) * 2009-08-24 2012-10-16 Jx Nippon Mining & Metals Corporation Method of heap or dump leaching of copper from copper sulfide ore
US9117965B2 (en) 2011-10-28 2015-08-25 Dow Global Technologies Llc Method of manufacture of chalcogenide-based photovoltaic cells
US9346899B2 (en) 2011-10-31 2016-05-24 Rohm And Haas Company Polymers having chelating functionality
US9376373B2 (en) 2011-10-31 2016-06-28 Rohm and Haas Company Dow Global Technologies LLC Vinyl monomers having chelating functionality
WO2014179134A1 (fr) * 2013-04-30 2014-11-06 Newmont Usa Limited Procédé pour le traitement de matière minérale contenant du carbonate avide d'acide et du métal précieux dans des minéraux sulfurés
US9545636B2 (en) 2013-04-30 2017-01-17 Newmont Usa Limited Method for processing mineral material containing acid-consuming carbonate and precious metal in sulfide minerals
US10876187B2 (en) 2015-04-17 2020-12-29 The University Of British Columbia Process for leaching metal sulfides with reagents having thiocarbonyl functional groups
US10876186B2 (en) 2015-04-17 2020-12-29 The University Of British Columbia Process for leaching metal sulfides with reagents having thiocarbonyl functional groups
US11884993B2 (en) 2015-04-17 2024-01-30 Jetti Resources, Llc Process for leaching metal sulfides with reagents having thiocarbonyl functional groups
US10870903B2 (en) 2015-04-17 2020-12-22 The University Of British Columbia Process for leaching metal sulfides with reagents having thiocarbonyl functional groups
US10865460B2 (en) 2015-04-17 2020-12-15 The University Of British Columbia Process for leaching metal sulfides with reagents having thiocarbonyl functional groups
US10781502B2 (en) 2015-04-17 2020-09-22 The University Of British Columbia Process for leaching metal sulfides with reagents having thiocarbonyl functional groups
US10954583B2 (en) 2015-04-17 2021-03-23 The University Of British Columbia Process for leaching metal sulfides with reagents having thiocarbonyl functional groups
US10961604B2 (en) 2015-04-17 2021-03-30 The University Of British Columbia Process for leaching metal sulfides with reagents having thiocarbonyl functional groups
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JP2020522606A (ja) * 2016-10-19 2020-07-30 ザ ユニバーシティ オブ ブリティッシュ コロンビアＴｈｅ Ｕｎｉｖｅｒｓｉｔｙ Ｏｆ Ｂｒｉｔｉｓｈ Ｃｏｌｕｍｂｉａ チオカルボニル官能基を有する試薬による金属硫化物の浸出方法
JP2022001668A (ja) * 2016-10-19 2022-01-06 ザ ユニバーシティ オブ ブリティッシュ コロンビアThe University Of British Columbia チオカルボニル官能基を有する試薬による金属硫化物の浸出方法
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CN111194358B (zh) * 2018-05-09 2021-10-26 技术资源有限公司 浸出含铜矿石
WO2019213694A1 (fr) * 2018-05-09 2019-11-14 Technological Resources Pty. Limited Lixiviation de minerais contenant du cuivre
CN109776606A (zh) * 2019-03-12 2019-05-21 中南大学 一种有机磷酸化合物及其合成方法和作为黄铜矿捕收剂的应用
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