EP0276215B1 - Procede d'extraction de metaux precieux a partir de concentres de minerai - Google Patents
Procede d'extraction de metaux precieux a partir de concentres de minerai Download PDFInfo
- Publication number
- EP0276215B1 EP0276215B1 EP86905719A EP86905719A EP0276215B1 EP 0276215 B1 EP0276215 B1 EP 0276215B1 EP 86905719 A EP86905719 A EP 86905719A EP 86905719 A EP86905719 A EP 86905719A EP 0276215 B1 EP0276215 B1 EP 0276215B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gold
- silicate
- digestion
- silver
- temperatures
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000012141 concentrate Substances 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims description 35
- 230000008569 process Effects 0.000 title claims description 28
- 239000010970 precious metal Substances 0.000 title abstract description 11
- 239000010931 gold Substances 0.000 claims abstract description 46
- 229910052964 arsenopyrite Inorganic materials 0.000 claims abstract description 44
- 229910052737 gold Inorganic materials 0.000 claims abstract description 42
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 41
- MJLGNAGLHAQFHV-UHFFFAOYSA-N arsenopyrite Chemical compound [S-2].[Fe+3].[As-] MJLGNAGLHAQFHV-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 35
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910052709 silver Inorganic materials 0.000 claims abstract description 33
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000004332 silver Substances 0.000 claims abstract description 32
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000002386 leaching Methods 0.000 claims abstract description 29
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 28
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052785 arsenic Inorganic materials 0.000 claims abstract description 21
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 17
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052742 iron Inorganic materials 0.000 claims abstract description 14
- 230000001590 oxidative effect Effects 0.000 claims abstract description 11
- 235000011149 sulphuric acid Nutrition 0.000 claims abstract 3
- 239000001117 sulphuric acid Substances 0.000 claims abstract 3
- 239000000126 substance Substances 0.000 claims description 27
- 230000029087 digestion Effects 0.000 claims description 23
- 229910052760 oxygen Inorganic materials 0.000 claims description 22
- 239000001301 oxygen Substances 0.000 claims description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 21
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 claims description 21
- 229910052683 pyrite Inorganic materials 0.000 claims description 21
- 239000011028 pyrite Substances 0.000 claims description 20
- 229910000510 noble metal Inorganic materials 0.000 claims description 15
- 238000000605 extraction Methods 0.000 claims description 12
- 230000035484 reaction time Effects 0.000 claims description 12
- 238000001556 precipitation Methods 0.000 claims description 5
- YPFNIPKMNMDDDB-UHFFFAOYSA-K 2-[2-[bis(carboxylatomethyl)amino]ethyl-(2-hydroxyethyl)amino]acetate;iron(3+) Chemical compound [Fe+3].OCCN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O YPFNIPKMNMDDDB-UHFFFAOYSA-K 0.000 claims description 4
- 238000000184 acid digestion Methods 0.000 claims description 4
- 239000003575 carbonaceous material Substances 0.000 claims 7
- PQTCMBYFWMFIGM-UHFFFAOYSA-N gold silver Chemical compound [Ag].[Au] PQTCMBYFWMFIGM-UHFFFAOYSA-N 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 claims 2
- 238000003801 milling Methods 0.000 claims 1
- 239000000758 substrate Substances 0.000 claims 1
- 238000001179 sorption measurement Methods 0.000 abstract description 7
- 238000005262 decarbonization Methods 0.000 abstract description 5
- 238000007704 wet chemistry method Methods 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 description 17
- 239000007787 solid Substances 0.000 description 11
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 10
- 238000000227 grinding Methods 0.000 description 10
- 239000000243 solution Substances 0.000 description 10
- 229910052717 sulfur Inorganic materials 0.000 description 9
- 239000011593 sulfur Substances 0.000 description 9
- 238000005188 flotation Methods 0.000 description 8
- 238000000926 separation method Methods 0.000 description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 230000003116 impacting effect Effects 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 5
- 230000005021 gait Effects 0.000 description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 description 5
- 239000011707 mineral Substances 0.000 description 5
- 230000009466 transformation Effects 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- DJHGAFSJWGLOIV-UHFFFAOYSA-K Arsenate3- Chemical class [O-][As]([O-])([O-])=O DJHGAFSJWGLOIV-UHFFFAOYSA-K 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- VETKVGYBAMGARK-UHFFFAOYSA-N arsanylidyneiron Chemical compound [As]#[Fe] VETKVGYBAMGARK-UHFFFAOYSA-N 0.000 description 2
- -1 arsenic sulfides Chemical class 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 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 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 150000004760 silicates Chemical class 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000000844 transformation Methods 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical class [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000011019 hematite Substances 0.000 description 1
- 229910052595 hematite Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052960 marcasite Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000009853 pyrometallurgy Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- MNWBNISUBARLIT-UHFFFAOYSA-N sodium cyanide Chemical compound [Na+].N#[C-] MNWBNISUBARLIT-UHFFFAOYSA-N 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- DHCDFWKWKRSZHF-UHFFFAOYSA-L thiosulfate(2-) Chemical compound [O-]S([S-])(=O)=O DHCDFWKWKRSZHF-UHFFFAOYSA-L 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
- C22B11/04—Obtaining noble metals by wet processes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
- C22B11/08—Obtaining noble metals by cyaniding
Definitions
- the invention relates to a wet chemical process for the extraction of gold and silver by the direct oxidizing, sulfuric acid digestion of carbon-containing, pyrite-free or pyrite-containing ore concentrates, in particular arsenopyrite concentrates (FeAsS2) with a silicate or silicate and pyrite gangue, whereby arsenic and iron are converted almost completely into solution and the noble metals are enriched almost quantitatively together with the carbon of the carbon-containing substances in the silicate residue.
- AuAsS2 arsenopyrite concentrates
- gold and silver can be obtained by cyanide leaching with almost no loss of adsorption and subsequent precipitation.
- the arsenopyrite concentrates generally contain silicates and, depending on the deposit type, pyrites and carbon-containing substances such as e.g. Graphite. Since the subsequent subsequent roasting process for the combustion of the sulfide sulfur in the presence of carbon-containing substances cannot be controlled thermally, attempts are made to produce carbon-free arsenopyrite concentrates by pressing the carbon-containing substances during flotation. This is only partially successful and is eliminated in the case of carbon-containing substances that contain adsorbed precious metals.
- the roasting of arsenopyrite concentrates takes place in the temperature range between 500 ° and 800 ° C.
- arsenic and arsenic sulfides must be completely oxidized in the gas phase. This requires a low oxygen pressure and a high S02 partial pressure in the roasting zone. Excessive oxygen partial pressure creates the conditions for the formation of metal arsenates.
- the gross reaction process of roasting arsenopyrite corresponds to the following equation:
- the disadvantage of this method is that the silicate gait is largely dissolved, which causes considerable filtration problems during the solid / liquid separation due to gel formation. Furthermore, the essentially amorphous Fe 2 0 3 has a very good dissolving behavior, so that in the subsequent solution of the noble metals with CI 2 gas, high reagent costs can be expected.
- the object of the invention is to provide a wet-chemical process for the recovery of gold and silver as well as a high gold and high silver content, iron-, arsenic- and carbon-free silicate concentrate from pyrite-free ore concentrates, in particular from arsenopyrite or p yrit inconveniencen ore concentrates, in particular from arsenopyrite, in addition to Silicates can contain carbon-containing substances, which enables an almost quantitative gold and silver yield or the production of a high-gold and high-silver-containing, iron-, arsenic- and carbon-free silicate concentrate under the most economical process conditions and largely avoiding environmental pollution.
- Claims 1 to 4 contain the solution to this problem.
- the ore concentrates are subjected to mechano-chemical treatment with predominantly shocking loads with an energy expenditure of 50-500 kWh / t ore concentrate with or without sulfuric acid with a reaction time of 15 minutes to 6 hours and temperature rises of 50 ° -150 ° C in the presence of oxygen with a partial pressure of 0.2-20 bar oxidizing in one step, whereby the arsenic and iron part is almost completely converted into solution, while gold, silver and carbon-containing substances are almost completely in the silicate residue, which at temperatures of 400 ° -1000 ° C is decarbonized, enrich.
- Gold and silver can be obtained from this decarbonized concentrate in a known manner by cyanide leaching and subsequent precipitation. The cyanide leach can be carried out in 3-10 hours.
- the carbon-containing fraction of the noble metal-containing residue can be completely decarbonized even at temperatures which are far from the flash points usual for carbon-containing substances, so that precious metal losses due to adsorption are largely excluded in the subsequent cyanide leaching.
- arsenopyrite concentrates containing noble metals which in addition to silicate and carbon-containing gait contain pyrite as an accompanying mineral, can also be digested in one step in the presence of oxygen if a mechano-chemical pretreatment with predominantly impacting stress is carried out. Pyrite suffers structural changes in the same way as arsenopyrite, which are characterized by a sulfur deficit in the crystal lattice.
- reaction conditions for the oxidizing digestion of pyrite-containing arsenopyrite concentrates are determined by the reactivity of the pyrite.
- reaction temperature of 140 ° C known from scientific studies on the complete oxidizing acid pressure decomposition of pyrite
- a complete decomposition of the pyrite fraction in arsenopyrite concentrates can take place at temperatures of 110 ° C without the addition of sulfuric acid .
- these silicate residues the leading gold and silver are almost quantitative even under these conditions.
- a process step that is essential to the invention is the mechano-chemical pretreatment with predominantly impact stress, in which impact stresses in the arsenopyrite concentrates, in addition to the surface enlargement caused by the crushing effect, cause symmetry conversions and unstable intermediate states due to lattice defects and vacancies, the latter being generated as a result of the dissociation of a low sulfur content.
- Vibratory grinding is particularly suitable as a mechano-chemical pretreatment process for generating structural changes due to its predominantly shocking loads at accelerations up to 15 g and point temperatures greater than 800 ° C.
- arsenopyrites undergo extensive structural transformation from triclinic to monoclinic symmetry.
- the accompanying minerals pyrite, quartz and carbon are put into active unstable intermediate states by lattice defects or lattice vacancies.
- This effect of mechano-chemical structural transformation which is essential to the invention for the dissolving behavior of arsenopyrite concentrates, can be reproducibly demonstrated by X-ray fine structures.
- Vibrating mills are to be regarded accordingly as physicochemical reactors (Gock, E .: Measures to reduce the energy requirement for vibratory grinding, processing technology, 1979, pp. 343-347).
- An energy expenditure for vibratory grinding of 100-200 kWh / t ore concentrate has proven to be particularly advantageous in the method according to the invention.
- the effect of the mechanochemical structural transformation of arsenopyrite concentrates achieved by vibratory grinding depends on the concentration of the mineral components, on the operating conditions of the mill as well as on the duration of the grinding and thus the energy expenditure per ton of concentrate. If a longer digestion time can be represented in terms of process technology, a shorter grinding time is sufficient. With regard to the volume of the digestion reactor, however, it is advantageous to keep the reaction time short. A reaction time of 15-240 minutes has proven to be particularly advantageous.
- the vibratory grinding is therefore preferably carried out in such a way that the intensity ratios of the X-ray diffraction reflections 1 / lo that are measurable for arsenopyrite or the accompanying minerals quartz and pyrite are less than 0.4.
- the digestion can contain metal.
- Arsenopyrite concentrates with any proportions of silicate gait and carbon-containing substances 1 e.g. by low pressure leaching 3 with sulfuric acid at temperatures of 60 ° C-120 ° C, particularly preferably at 60 ° -100 ° C and an oxygen partial pressure of preferably 0.2-10 bar with a reaction time of 15-240 minutes in such a way that the arsenic - And iron content is completely transferred to solution 4 and the precious metals gold and silver accumulate almost quantitatively in the silicate, carbon-containing residue 8 and thus form a noble metal concentrate.
- the reaction conditions are determined by it.
- the dissolution is an exothermic reaction, so that the process does not require any heat.
- the sulfide sulfur from arsenopyrite and pyrite is largely oxidized to sulfate, it is generally not necessary to add sulfuric acid in a cycle.
- the noble metal concentrate can be e.g. due to the activated state of the carbon-containing substance. Decarbonize by annealing, preferably at 500 ⁇ 600 ° C. This largely prevents loss of precious metals due to adsorption during the subsequent cyanide leaching. Gold and silver can be obtained from the decarbonized concentrate in a known manner by cyanide leaching 10.
- the reaction time for the almost quantitative extraction of gold and silver from these concentrates is 3 to a maximum of 10 hours.
- the extraction of gold and silver from the cyanide solutions can e.g. by the CIP process with subsequent precipitation 11 by electrolysis or by zinc metal.
- the solutions resulting from the digestion of arsenopyrite concentrates contain all of the leading arsenic and iron in the form of Fe3 + and As03- / 4-ions 4.
- iron and arsenic can precipitate out as difficult-to-dissolve iron arsenate 5, which are fed to a landfill 6 or can be the starting material for the thermal extraction of arsenic.
- the sulfuric acid released in the process is recirculated 7 into the low-pressure leaching stage 3.
- the high carbon residue was first dried at 100 ° C and then annealed at 500 ° C for 60 minutes in the presence of atmospheric oxygen. The residue is completely decarbonized. In relation to the task, an enrichment by a factor of 3.4 was found for gold and silver in the silicate residue. Subsequent cyanide leaching of this precious metal concentrate led to a complete extraction of gold and silver after a leaching time of 4 hours; Without decarbonization, precious metal losses of up to 70% occur after the same leaching time.
- the decarbonization was carried out at 600 ° C. over a period of 10 minutes.
- the result was a completely decarbonized noble metal concentrate which showed the same favorable leaching behavior in the subsequent cyanide leaching.
- the noble metal-rich residue was decarbonized in an air stream at 600 ° C. for 15 minutes. An enrichment level of 5.05 was found for gold and silver. The leaching of this precious metal concentrate with NaCN enabled a complete extraction of gold and silver after a reaction time of 5 hours.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT86905719T ATE54675T1 (de) | 1985-09-23 | 1986-09-18 | Verfahren zur gewinnung von edelmetallen aus erzkonzentraten. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3534224 | 1985-09-23 | ||
DE19853534224 DE3534224A1 (de) | 1985-09-23 | 1985-09-23 | Verfahren zur nasschemischen gewinnung von edelmetallen aus kohlenstoffhaltigen arsenopyritkonzentraten |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0276215A1 EP0276215A1 (fr) | 1988-08-03 |
EP0276215B1 true EP0276215B1 (fr) | 1990-07-18 |
Family
ID=6281920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86905719A Expired - Lifetime EP0276215B1 (fr) | 1985-09-23 | 1986-09-18 | Procede d'extraction de metaux precieux a partir de concentres de minerai |
Country Status (13)
Country | Link |
---|---|
US (1) | US4786323A (fr) |
EP (1) | EP0276215B1 (fr) |
CN (1) | CN1008447B (fr) |
AU (1) | AU595236B2 (fr) |
BR (1) | BR8604560A (fr) |
CA (1) | CA1277143C (fr) |
DE (2) | DE3534224A1 (fr) |
ES (1) | ES2001981A6 (fr) |
GB (2) | GB8615067D0 (fr) |
PH (1) | PH23578A (fr) |
WO (1) | WO1987001733A1 (fr) |
ZA (1) | ZA867138B (fr) |
ZW (1) | ZW19186A1 (fr) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4923510A (en) * | 1988-10-31 | 1990-05-08 | Gopalan Ramadorai | Treatment of refractory carbonaceous sulfide ores for gold recovery |
DE4005026A1 (de) * | 1990-02-19 | 1991-08-22 | Gock Eberhard | Verfahren zur gewinnung von edelmetallen aus antimonverbindungen |
US5364453A (en) * | 1992-09-22 | 1994-11-15 | Geobiotics, Inc. | Method for recovering gold and other precious metals from carbonaceous ores |
US5338338A (en) * | 1992-09-22 | 1994-08-16 | Geobiotics, Inc. | Method for recovering gold and other precious metals from carbonaceous ores |
DE4400796A1 (de) * | 1994-01-13 | 1995-07-20 | Krupp Polysius Ag | Verfahren zur Gewinnung von Edelmetallen |
US5458866A (en) * | 1994-02-14 | 1995-10-17 | Santa Fe Pacific Gold Corporation | Process for preferentially oxidizing sulfides in gold-bearing refractory ores |
FI108543B (fi) * | 1999-08-12 | 2002-02-15 | Outokumpu Oy | Menetelmä epäpuhtauksien poistamiseksi sulfideja sisältävästä kultarikasteesta |
KR20050089867A (ko) * | 2002-12-31 | 2005-09-08 | 인텍 엘티디 | 함황 토질로부터 금속을 회수하는 방법 |
CN100372952C (zh) * | 2006-08-03 | 2008-03-05 | 山东国大黄金股份有限公司 | 含砷金精矿提金尾渣再提金银的方法 |
US8262768B2 (en) | 2007-09-17 | 2012-09-11 | Barrick Gold Corporation | Method to improve recovery of gold from double refractory gold ores |
US8262770B2 (en) | 2007-09-18 | 2012-09-11 | Barrick Gold Corporation | Process for controlling acid in sulfide pressure oxidation processes |
EA020884B1 (ru) * | 2007-09-18 | 2015-02-27 | Баррик Гольд Корпорейшн | Способ восстановления золота из тугоплавких сульфидных руд |
FI3290534T3 (fi) | 2010-11-22 | 2023-11-20 | Barrick Gold Corp | Jalometallia sisältävien materiaalien emäksinen ja hapan painehapetus |
CN102560138B (zh) * | 2012-01-11 | 2013-07-10 | 森松(江苏)海油工程装备有限公司 | 一种难浸金矿预处理方法 |
CN102925716A (zh) * | 2012-11-26 | 2013-02-13 | 云南黄金矿业集团股份有限公司 | 一种难处理金精矿加压水浸氧化预处理氰化提金方法 |
US10077487B2 (en) | 2013-05-29 | 2018-09-18 | Barrick Gold Corporation | Method for arsenic oxidation and removal from process and waste solutions |
CN103436711B (zh) * | 2013-08-22 | 2014-10-29 | 中南大学 | 一种富集氰化金泥中金的方法 |
CN106801147A (zh) * | 2017-01-22 | 2017-06-06 | 廖殷 | 黄金白银方术 |
CN112284959A (zh) * | 2020-10-15 | 2021-01-29 | 长春黄金研究院有限公司 | 金矿石产品中劫金物质影响金及硅酸盐包裹金的测定方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1004001A (en) * | 1911-03-03 | 1911-09-26 | S D Hicks & Son | Seamless jacketed kettle. |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1818846A (en) * | 1929-11-22 | 1931-08-11 | Stelle A Giles | Method of recovering gold and silver |
GB347680A (en) * | 1930-01-27 | 1931-04-27 | Henry William Coupe Annable | Process for separating gold and antimony contained in sulphide of antimony ores |
FR1058809A (fr) * | 1951-01-19 | 1954-03-19 | Chemical Construction Corp | Perfectionnements à la récupération de la teneur en métaux precieux des mineraiscontenant de l'arsenic et de leurs concentrats |
GB746521A (en) * | 1953-11-19 | 1956-03-14 | Quebec Metallurg Ind Ltd | Improvements in method of treating arsenical sulphide cobalt ores |
US2777764A (en) * | 1954-07-09 | 1957-01-15 | American Cyanamid Co | Process of recovering precious metals from refractory source materials |
US3642435A (en) * | 1969-11-10 | 1972-02-15 | Cyprus Mines Corp | Method of recovering water-soluble nonferrous metal sulfates from sulfur-bearing ores |
DE2047609A1 (en) * | 1970-09-28 | 1972-03-30 | Gerlach J | Crushing and leaching copper sulphide ores and concentrates - - using a ball mill and an oxidizing acid leaching treatment |
CA969764A (en) * | 1972-05-08 | 1975-06-24 | Charles E. O'neill | Aquecus oxidation of non-ferrous sulfide minerals |
FR2262698B1 (fr) * | 1974-02-28 | 1976-10-08 | Penarroya Miniere Metallurg | |
US4038362A (en) * | 1976-11-04 | 1977-07-26 | Newmont Explorations Limited | Increasing the recoverability of gold from carbonaceous gold-bearing ores |
DE2827912A1 (de) * | 1977-10-13 | 1979-04-19 | Simmering Graz Pauker Ag | Verfahren und vorrichtung zur herstellung aktivierter gemische mineralischer komponenten |
AT362289B (de) * | 1977-10-13 | 1981-04-27 | Simmering Graz Pauker Ag | Verfahren zur herstellung aktivierter gemische aus vorzugsweise pulverfoermigen komponenten, welche zur weiterbearbeitung durch pressen und nachfolgendes sintern bestimmt sind |
DE2827924B2 (de) * | 1977-10-13 | 1981-05-21 | Simmering-Graz-Pauker AG für Maschinen-, Kessel- und Waggonbau, Wien | Verfahren zur Aufbereitung flotierbarer Mineralien und Erze |
AT362292B (de) * | 1977-10-13 | 1981-04-27 | Simmering Graz Pauker Ag | Verfahren zur aktivierenden aufbereitung von keramischen, vorzugsweise grobkeramischen roh- stoffen |
US4259107A (en) * | 1979-12-13 | 1981-03-31 | Newmont Exploration Limited | Recovery of gold from sedimentary gold-bearing ores |
FR2483463A1 (fr) * | 1980-06-03 | 1981-12-04 | Salsigne Mines Produits Chimiq | Procede pour la recuperation d'or et/ou d'argent et eventuellement de bismuth contenus dans des minerais sulfures et/ou de sulfoarseniures |
SU914647A1 (ru) * | 1980-08-01 | 1982-03-23 | Univ Erevanskij | Способ переработки. мышьяксодержащих конверторных пылей и возгонов 1 |
FI62340C (fi) * | 1980-08-06 | 1982-12-10 | Outokumpu Oy | Foerfarande foer separering av guld och silver fraon komplexa sulfidmalmer och -koncentrat |
DE3036848C2 (de) * | 1980-09-30 | 1982-08-12 | Gewerkschaft Walter, 4300 Essen | Verfahren zur Gewinnung von Silber aus komplexverwachsenen Silbererzen |
CA1154599A (fr) * | 1980-09-30 | 1983-10-04 | John A. Thomas | Traitement hydrometallurgique de materiaux a teneur de metaux precieux |
DE3132668A1 (de) * | 1981-08-14 | 1983-03-03 | Eberhard Priv. Doz. Dr.-Ing. Gock | "verfahren zur herstellung von alkalifreiem manganrohstoff aus kryptomelanerzen" |
CA1219132A (fr) * | 1983-01-18 | 1987-03-17 | Morris J.V. Beattie | Traitement hydrometallurgique d'arsenopyrite |
ES523935A0 (es) * | 1983-07-07 | 1984-10-01 | Compania Espanola De Minas De | Procedimiento para recuperar metales valiosos de las cenizas de piritas normales y complejas |
CA1234291A (fr) * | 1984-09-27 | 1988-03-22 | Donald R. Weir | Extraction de l'or des matieres sulfureuses auriferes et refractaires a teneur de fer |
CA1235907A (fr) * | 1984-09-27 | 1988-05-03 | Donald R. Weir | Extraction de l'or des concentres refractaires sulfureux auriferes a teneur de fer |
CA1234991A (fr) * | 1984-09-27 | 1988-04-12 | Donald R. Weir | Extraction de l'or des minerais sulfureux auriferes et refractaires a teneur de fer |
US4578163A (en) * | 1984-12-03 | 1986-03-25 | Homestake Mining Company | Gold recovery process |
-
1985
- 1985-09-23 DE DE19853534224 patent/DE3534224A1/de not_active Withdrawn
-
1986
- 1986-06-20 GB GB868615067A patent/GB8615067D0/en active Pending
- 1986-09-16 ZW ZW191/86A patent/ZW19186A1/xx unknown
- 1986-09-18 WO PCT/DE1986/000383 patent/WO1987001733A1/fr active IP Right Grant
- 1986-09-18 DE DE8686905719T patent/DE3672838D1/de not_active Expired - Fee Related
- 1986-09-18 CA CA000518585A patent/CA1277143C/fr not_active Expired - Lifetime
- 1986-09-18 EP EP86905719A patent/EP0276215B1/fr not_active Expired - Lifetime
- 1986-09-19 PH PH34267A patent/PH23578A/en unknown
- 1986-09-19 AU AU62954/86A patent/AU595236B2/en not_active Ceased
- 1986-09-19 ZA ZA867138A patent/ZA867138B/xx unknown
- 1986-09-22 CN CN86107005A patent/CN1008447B/zh not_active Expired
- 1986-09-23 ES ES8602113A patent/ES2001981A6/es not_active Expired
- 1986-09-23 GB GB8622873A patent/GB2181421B/en not_active Expired
- 1986-09-23 US US06/910,519 patent/US4786323A/en not_active Expired - Fee Related
- 1986-09-23 BR BR8604560A patent/BR8604560A/pt not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1004001A (en) * | 1911-03-03 | 1911-09-26 | S D Hicks & Son | Seamless jacketed kettle. |
Non-Patent Citations (1)
Title |
---|
The Metallurgical Society of AIME, vol. 23, 03.03.1971 N.Y. (USA) R.J. Scheiner et al.: "Processing refractory carbonaceous ores for gold recovery", pp 37-40, see p. 38 * |
Also Published As
Publication number | Publication date |
---|---|
AU595236B2 (en) | 1990-03-29 |
WO1987001733A1 (fr) | 1987-03-26 |
CN1008447B (zh) | 1990-06-20 |
GB2181421B (en) | 1989-11-29 |
GB8615067D0 (en) | 1986-07-23 |
ZA867138B (en) | 1987-05-27 |
PH23578A (en) | 1989-09-11 |
DE3534224A1 (de) | 1987-04-02 |
BR8604560A (pt) | 1987-05-19 |
GB8622873D0 (en) | 1986-10-29 |
US4786323A (en) | 1988-11-22 |
CA1277143C (fr) | 1990-12-04 |
DE3672838D1 (de) | 1990-08-23 |
GB2181421A (en) | 1987-04-23 |
ES2001981A6 (es) | 1988-07-01 |
AU6295486A (en) | 1987-03-26 |
ZW19186A1 (en) | 1987-10-28 |
EP0276215A1 (fr) | 1988-08-03 |
CN86107005A (zh) | 1987-09-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0276215B1 (fr) | Procede d'extraction de metaux precieux a partir de concentres de minerai | |
US4738718A (en) | Method for the recovery of gold using autoclaving | |
DE69400747T2 (de) | Hydrometallurgisches Verfahren zur Gewinnung von Metallen aus komplexenErzen | |
DE69105332T2 (de) | Verfahren zur hydrometallurgischen Behandlung zinksulfidhaltiger Rohstoffe. | |
DE2134129C3 (de) | Verfahren zur Gewinnung von Nickel und Kobalt | |
DE2357280C2 (de) | Verfahren zur Gewinnung von Zink aus zink- und eisenhaltigen Sulfiden | |
DE2604402A1 (de) | Verfahren zum gewinnen von nichteisen-metallen | |
EP0135950A1 (fr) | Procédé d'extraction de cuivre et éventuellement d'argent et d'or par lixiviation de matières oxydées et sulfurées au moyen de cyanures solubles dans l'eau | |
JPH01156432A (ja) | 分離方法 | |
US4537628A (en) | Recovery of precious metals | |
DE2602827C2 (de) | Verfahren zum Auflösen von Edelmetallen aus edelmetallhaltigen Konzentraten, die sekundäres Platinmetall enthalten | |
DE2446484C2 (de) | Verfahren zur Behandlung von Metallsulfiden mit einem Gehalt an Eisen und Nichteisen-Metallen, insbesondere Kupfer, zum Zweck der Ausscheidung des Eisengehalts und zur Umwandlung des Kupfers | |
US4610723A (en) | Process for leaching sulphide concentrates of the tetrahedrite type containing high concentrations of arsenic and antimony | |
DE2845717C2 (de) | Verfahren zur Gewinnung von Gold und/oder Uran aus Schwefelkiesabbrand | |
DE3401961C2 (fr) | ||
DE2323186C3 (de) | Verfahren zur Behandlung von feinverteilten, edelmetallhaltigen Sulfidmaterialien | |
DE2305518A1 (de) | Gewinnung von kupfer aus kupfersulfidhaltigen konzentraten | |
DE1792335C3 (de) | Verfahren zur Aufbereitung von Eisensulfiden | |
DE2323129C3 (de) | Verfahren zur Behandlung von feinverteilten edelmetallhaltigen Sulfidmaterialien | |
DE2050947C (de) | Verfahren zur selektiven Abtrennung von Nichteisenmetallen aus diese enthaltenden Pyriterzen | |
DE2308792C3 (de) | Verfahren zur Behandlung von Metallsulfiden | |
DE1558431C (de) | Verfahren zur Behandlung von kupfer haltigen und eisenhaltigen Sulfiden | |
DE2154294B2 (de) | Mehrstufiges verfahren zur vollstaendigen aufarbeitung komplexer metallegierungen aus eisen-basis | |
DE2023098A1 (de) | Verfahren zur selektiven Trennung und Gewinnung von Zinnverbindungen | |
DE2150130A1 (de) | Verfahren zur Gewinnung von Molybdaen |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19870613 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE DE FR IT SE |
|
17Q | First examination report despatched |
Effective date: 19891004 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE DE FR IT SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Effective date: 19900718 |
|
REF | Corresponds to: |
Ref document number: 54675 Country of ref document: AT Date of ref document: 19900815 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 3672838 Country of ref document: DE Date of ref document: 19900823 |
|
ITF | It: translation for a ep patent filed | ||
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
ITTA | It: last paid annual fee | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19920813 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19920815 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19920826 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19920903 Year of fee payment: 7 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Effective date: 19930918 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19930919 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19940531 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19941001 |
|
EUG | Se: european patent has lapsed |
Ref document number: 86905719.0 Effective date: 19940410 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050918 |