GB871646A - An improved process for recovering noble metals from refractory minerals - Google Patents
An improved process for recovering noble metals from refractory mineralsInfo
- Publication number
- GB871646A GB871646A GB24747/58A GB2474758A GB871646A GB 871646 A GB871646 A GB 871646A GB 24747/58 A GB24747/58 A GB 24747/58A GB 2474758 A GB2474758 A GB 2474758A GB 871646 A GB871646 A GB 871646A
- Authority
- GB
- United Kingdom
- Prior art keywords
- residue
- water
- slurry
- heated
- sulphur
- 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
Links
- 229910000510 noble metal Inorganic materials 0.000 title abstract 4
- 229910052500 inorganic mineral Inorganic materials 0.000 title abstract 2
- 239000011707 mineral Substances 0.000 title abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract 4
- 239000005864 Sulphur Substances 0.000 abstract 4
- 239000002002 slurry Substances 0.000 abstract 4
- 229910052787 antimony Inorganic materials 0.000 abstract 3
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 abstract 3
- 229910052737 gold Inorganic materials 0.000 abstract 3
- 239000010931 gold Substances 0.000 abstract 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 239000002245 particle Substances 0.000 abstract 2
- 229910052709 silver Inorganic materials 0.000 abstract 2
- 235000011149 sulphuric acid Nutrition 0.000 abstract 2
- 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 abstract 1
- DJHGAFSJWGLOIV-UHFFFAOYSA-K Arsenate3- Chemical class [O-][As]([O-])([O-])=O DJHGAFSJWGLOIV-UHFFFAOYSA-K 0.000 abstract 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 1
- 235000011941 Tilia x europaea Nutrition 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 238000005054 agglomeration Methods 0.000 abstract 1
- 230000002776 aggregation Effects 0.000 abstract 1
- -1 and ferric Chemical compound 0.000 abstract 1
- 229910052785 arsenic Inorganic materials 0.000 abstract 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 abstract 1
- MJLGNAGLHAQFHV-UHFFFAOYSA-N arsenopyrite Chemical compound [S-2].[Fe+3].[As-] MJLGNAGLHAQFHV-UHFFFAOYSA-N 0.000 abstract 1
- 229910052964 arsenopyrite Inorganic materials 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 229910052951 chalcopyrite Inorganic materials 0.000 abstract 1
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 238000004821 distillation Methods 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 230000004927 fusion Effects 0.000 abstract 1
- 229910052741 iridium Inorganic materials 0.000 abstract 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- 239000004571 lime Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052763 palladium Inorganic materials 0.000 abstract 1
- 229910052954 pentlandite Inorganic materials 0.000 abstract 1
- 229910052697 platinum Inorganic materials 0.000 abstract 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 abstract 1
- 229910052683 pyrite Inorganic materials 0.000 abstract 1
- 239000011028 pyrite Substances 0.000 abstract 1
- 229910052952 pyrrhotite Inorganic materials 0.000 abstract 1
- 238000010791 quenching Methods 0.000 abstract 1
- 230000000171 quenching effect Effects 0.000 abstract 1
- 239000003870 refractory metal Substances 0.000 abstract 1
- 229910052703 rhodium Inorganic materials 0.000 abstract 1
- 229910052707 ruthenium Inorganic materials 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- MNWBNISUBARLIT-UHFFFAOYSA-N sodium cyanide Chemical compound [Na+].N#[C-] MNWBNISUBARLIT-UHFFFAOYSA-N 0.000 abstract 1
- 150000004763 sulfides Chemical class 0.000 abstract 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 abstract 1
- 229910021653 sulphate ion Inorganic materials 0.000 abstract 1
- 229910052725 zinc Inorganic materials 0.000 abstract 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
- C22B11/00—Obtaining noble metals
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
Refractory metal bearing material which contains sulphur, at least one noble metal, e.g. Au, Ag, Pt, Pd, Ir, Rh, Ru, or OS, and at least one of the group lead, arsenic, and antimony, is heated in a comminuted state in an inert atmosphere at a temperature above 470 DEG C. but below the fusion temperature to remove at least part of the As and/or Sb and sulphur by distillation. The roasting residue is slurried in water or an aqueous H2SO4 solution, the slurry is agitated and heated to maintain a temperature of 90-190 DEG C. under an oxygen partial pressure above one atmosphere to convert at least part of the S to liquid sulphur globules containing unoxidized metal-bearing particles, the sulphur globules are solidified and returned to the heating step, and noble metals are recovered from the slurry residue. The heating step is effected at 470-820 DEG C. in an inert atmosphere, and the residue is cooled to below 100 DEG C. out of air contact by quenching with water or weak acid, or by passage through a cooler. The residue which should be 0.147-0.043 mm. size may contain pyrrhotite, undecomposed arsenopyrite, pyrite, antimony and lead minerals, noble metals, and decomposed chalcopyrite, and pentlandite, and is slurried in water or water containing 1-10 grm. H2SO4/l. The slurry is heated under O2 pressure 1-7 atms. to yield a solution which may contain soluble sulphates of Ni, Cu, Zn, and Co, and an insoluble residue of Fe2O3, ferrous, and ferric, sulphate, insoluble arsenates and antimonates, gold, and lead sulphate. Where the slurry is heated below 112.8 DEG C. the temperature is raised above for agglomeration of the liquid S globules containing occluded antimony and lead sulphides. The S particles are cooled and separated and returned with, or without preliminary drying and/or grinding to the roasting where S vapour is recovered. Part of the S globules may be treated separately, e.g. by burning, and occluded metals returned to the roasting, or oxidation. The residue from the S separation is neutralized with lime and cyanided by mixing with water and reacting with NaCN to recover gold, or silver.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA871646X | 1957-08-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB871646A true GB871646A (en) | 1961-06-28 |
Family
ID=4172743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24747/58A Expired GB871646A (en) | 1957-08-02 | 1958-07-31 | An improved process for recovering noble metals from refractory minerals |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB871646A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2189235A (en) * | 1986-04-17 | 1987-10-21 | Elf Aquitaine | Extraction of sulphur from iron minerals treated by oxidising lixiviation |
| CN114737059A (en) * | 2022-04-24 | 2022-07-12 | 西安建筑科技大学 | A method for treating cyanide tailings by using anaerobic roasting-persulfate leaching combined technology |
-
1958
- 1958-07-31 GB GB24747/58A patent/GB871646A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2189235A (en) * | 1986-04-17 | 1987-10-21 | Elf Aquitaine | Extraction of sulphur from iron minerals treated by oxidising lixiviation |
| CN114737059A (en) * | 2022-04-24 | 2022-07-12 | 西安建筑科技大学 | A method for treating cyanide tailings by using anaerobic roasting-persulfate leaching combined technology |
| CN114737059B (en) * | 2022-04-24 | 2024-03-01 | 西安建筑科技大学 | Method for treating cyanide tailings by adopting anaerobic roasting-persulfate leaching combined technology |
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