CA1191813A - Process for solution control in an electrolytic zinc plant circuit - Google Patents
Process for solution control in an electrolytic zinc plant circuitInfo
- Publication number
- CA1191813A CA1191813A CA000403803A CA403803A CA1191813A CA 1191813 A CA1191813 A CA 1191813A CA 000403803 A CA000403803 A CA 000403803A CA 403803 A CA403803 A CA 403803A CA 1191813 A CA1191813 A CA 1191813A
- Authority
- CA
- Canada
- Prior art keywords
- zinc
- solution
- solids
- szp
- calcine
- 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
- 239000011701 zinc Substances 0.000 title claims abstract description 278
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 259
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 257
- 238000000034 method Methods 0.000 title claims abstract description 157
- 230000008569 process Effects 0.000 title claims abstract description 114
- 239000007787 solid Substances 0.000 claims abstract description 186
- 229910001868 water Inorganic materials 0.000 claims abstract description 66
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 239000002245 particle Substances 0.000 claims abstract description 54
- 150000001875 compounds Chemical class 0.000 claims abstract description 52
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 48
- 238000001556 precipitation Methods 0.000 claims abstract description 46
- 239000012535 impurity Substances 0.000 claims abstract description 42
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 24
- 239000011787 zinc oxide Substances 0.000 claims abstract description 17
- 239000012141 concentrate Substances 0.000 claims abstract description 14
- 239000000243 solution Substances 0.000 claims description 310
- 239000011572 manganese Substances 0.000 claims description 54
- 229910052748 manganese Inorganic materials 0.000 claims description 50
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 47
- 239000012065 filter cake Substances 0.000 claims description 42
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 41
- 239000011686 zinc sulphate Substances 0.000 claims description 41
- 235000009529 zinc sulphate Nutrition 0.000 claims description 41
- 238000005406 washing Methods 0.000 claims description 40
- 239000011777 magnesium Substances 0.000 claims description 36
- 229910052749 magnesium Inorganic materials 0.000 claims description 35
- 238000000926 separation method Methods 0.000 claims description 35
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 31
- 238000001914 filtration Methods 0.000 claims description 26
- 239000007788 liquid Substances 0.000 claims description 22
- 239000000047 product Substances 0.000 claims description 16
- 238000012546 transfer Methods 0.000 claims description 16
- 238000010908 decantation Methods 0.000 claims description 14
- 239000011734 sodium Substances 0.000 claims description 13
- 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 claims description 12
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 8
- 230000008719 thickening Effects 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 230000001376 precipitating effect Effects 0.000 claims description 5
- 238000010936 aqueous wash Methods 0.000 claims description 4
- 230000006872 improvement Effects 0.000 claims description 4
- 229910001414 potassium ion Inorganic materials 0.000 claims description 3
- 229910001415 sodium ion Inorganic materials 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 31
- 239000005083 Zinc sulfide Substances 0.000 abstract description 7
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 abstract description 7
- 239000000706 filtrate Substances 0.000 description 43
- 235000019738 Limestone Nutrition 0.000 description 36
- 239000006028 limestone Substances 0.000 description 36
- WURBVZBTWMNKQT-UHFFFAOYSA-N 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)butan-2-one Chemical compound C1=NC=NN1C(C(=O)C(C)(C)C)OC1=CC=C(Cl)C=C1 WURBVZBTWMNKQT-UHFFFAOYSA-N 0.000 description 27
- 239000012530 fluid Substances 0.000 description 23
- 238000002474 experimental method Methods 0.000 description 18
- 238000000227 grinding Methods 0.000 description 18
- 230000008901 benefit Effects 0.000 description 16
- 238000012360 testing method Methods 0.000 description 15
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 13
- 229910021653 sulphate ion Inorganic materials 0.000 description 13
- 235000008504 concentrate Nutrition 0.000 description 12
- 230000003247 decreasing effect Effects 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 11
- 238000004090 dissolution Methods 0.000 description 11
- 150000002500 ions Chemical class 0.000 description 10
- 238000007792 addition Methods 0.000 description 9
- 230000007423 decrease Effects 0.000 description 9
- 229910052935 jarosite Inorganic materials 0.000 description 9
- 229910052708 sodium Inorganic materials 0.000 description 9
- 238000009825 accumulation Methods 0.000 description 8
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 7
- 239000011591 potassium Substances 0.000 description 7
- 229910052700 potassium Inorganic materials 0.000 description 7
- 239000002244 precipitate Substances 0.000 description 7
- 239000000460 chlorine Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 230000002411 adverse Effects 0.000 description 5
- 238000013019 agitation Methods 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 230000000670 limiting effect Effects 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000002829 reductive effect Effects 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- 238000011835 investigation Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000002386 leaching Methods 0.000 description 4
- 239000011656 manganese carbonate Substances 0.000 description 4
- 235000006748 manganese carbonate Nutrition 0.000 description 4
- 229910000016 manganese(II) carbonate Inorganic materials 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000012527 feed solution Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229940093474 manganese carbonate Drugs 0.000 description 3
- XMWCXZJXESXBBY-UHFFFAOYSA-L manganese(ii) carbonate Chemical compound [Mn+2].[O-]C([O-])=O XMWCXZJXESXBBY-UHFFFAOYSA-L 0.000 description 3
- 238000003801 milling Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 235000011149 sulphuric acid Nutrition 0.000 description 3
- 238000003828 vacuum filtration Methods 0.000 description 3
- WGEATSXPYVGFCC-UHFFFAOYSA-N zinc ferrite Chemical group O=[Zn].O=[Fe]O[Fe]=O WGEATSXPYVGFCC-UHFFFAOYSA-N 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000005363 electrowinning Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000008394 flocculating agent Substances 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000011085 pressure filtration Methods 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000001117 sulphuric acid Substances 0.000 description 2
- 239000010414 supernatant solution Substances 0.000 description 2
- 208000012639 Balance disease Diseases 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 229910001308 Zinc ferrite Inorganic materials 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 150000007514 bases Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052598 goethite Inorganic materials 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- AEIXRCIKZIZYPM-UHFFFAOYSA-M hydroxy(oxo)iron Chemical group [O][Fe]O AEIXRCIKZIZYPM-UHFFFAOYSA-M 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010310 metallurgical process Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 239000002674 ointment Substances 0.000 description 1
- 238000000643 oven drying Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011369 resultant mixture Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/16—Electrolytic production, recovery or refining of metals by electrolysis of solutions of zinc, cadmium or mercury
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G9/00—Compounds of zinc
- C01G9/06—Sulfates
-
- 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
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/20—Obtaining zinc otherwise than by distilling
- C22B19/26—Refining solutions containing zinc values, e.g. obtained by leaching zinc ores
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
- C25C7/06—Operating or servicing
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Electrolytic Production Of Metals (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Discharge Lamp (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPE916681 | 1981-06-02 | ||
| AUPE9166 | 1981-06-02 | ||
| AUPE923481 | 1981-06-10 | ||
| AUPE9234 | 1981-06-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1191813A true CA1191813A (en) | 1985-08-13 |
Family
ID=25642476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000403803A Expired CA1191813A (en) | 1981-06-02 | 1982-05-26 | Process for solution control in an electrolytic zinc plant circuit |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4437953A (cg-RX-API-DMAC7.html) |
| EP (1) | EP0067619B1 (cg-RX-API-DMAC7.html) |
| CA (1) | CA1191813A (cg-RX-API-DMAC7.html) |
| DE (1) | DE3275435D1 (cg-RX-API-DMAC7.html) |
| ES (1) | ES512734A0 (cg-RX-API-DMAC7.html) |
| IN (1) | IN157298B (cg-RX-API-DMAC7.html) |
| NO (1) | NO163494C (cg-RX-API-DMAC7.html) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5639463A (en) * | 1995-05-23 | 1997-06-17 | The Mennen Company | Clear cosmetic stick composition |
| SE514409C2 (sv) * | 1999-06-17 | 2001-02-19 | Boliden Mineral Ab | Förfarande för total utfällning av värdemetaller ur en sur laklösning |
| US7604783B2 (en) * | 2004-12-22 | 2009-10-20 | Placer Dome Technical Services Limited | Reduction of lime consumption when treating refractor gold ores or concentrates |
| US8061888B2 (en) * | 2006-03-17 | 2011-11-22 | Barrick Gold Corporation | Autoclave with underflow dividers |
| US8252254B2 (en) * | 2006-06-15 | 2012-08-28 | Barrick Gold Corporation | Process for reduced alkali consumption in the recovery of silver |
| CN103014782B (zh) * | 2012-12-27 | 2015-09-02 | 云南云铜锌业股份有限公司 | 一种锌电解过程中的排镁方法 |
| CN111434786B (zh) * | 2019-01-11 | 2021-10-01 | 彭勃 | 一种自磨式滚筒置换反应器及抗返溶多能级联净化工艺 |
| CN110964914B (zh) * | 2019-12-30 | 2021-09-03 | 南丹县南方有色金属有限责任公司 | 一种湿法炼锌工艺中除钙镁的方法 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR382241A (fr) * | 1906-10-01 | 1908-02-01 | Henry Livingstone Sulman | Perfectionnements dans la séparation du zinc de ses minerais ou composés |
| US1363052A (en) * | 1920-07-13 | 1920-12-21 | Metals Extraction Corp Ltd | Treatment of zinc solutions |
| FR629216A (fr) * | 1926-12-18 | 1927-11-07 | Norske Zinkkompani As | Méthode pour l'élimination des impuretés dissoutes dans les solutions circulant dans les procédés chimiques ou métallurgiques et notamment pour élimination de la magnésie dans les électrolytes de sulfate zincique |
| US1919947A (en) * | 1929-05-07 | 1933-07-25 | Virginia Smelting Company | Method of recovering metals and metallic oxides |
| BE435694A (fr) * | 1938-07-28 | 1939-09-30 | Slaskie Kopalnie I Cynkownie Spolka Akcyjna | Procédé de préparation de minerais de zinc |
| NO129256B (cg-RX-API-DMAC7.html) * | 1970-05-25 | 1974-03-18 | Electrolyt Zinc Australasia | |
| AU429078B2 (en) * | 1971-05-05 | 1972-10-12 | Electrolytic Zinc Company Of Australasia Limited | Improvements relating to the control of the impurity content of zinc sulphate solutions |
| GB1509537A (en) * | 1974-09-13 | 1978-05-04 | Cominco Ltd | Treatment of zinc plant residues |
| FI52595C (fi) | 1974-09-20 | 1977-10-10 | Outokumpu Oy | Menetelmä vesiliuosten puhdistamiseksi arsenideina saostuvista metalli -ioneista. |
-
1982
- 1982-05-18 US US06/379,491 patent/US4437953A/en not_active Expired - Fee Related
- 1982-05-24 IN IN594/CAL/82A patent/IN157298B/en unknown
- 1982-05-26 CA CA000403803A patent/CA1191813A/en not_active Expired
- 1982-06-01 ES ES512734A patent/ES512734A0/es active Granted
- 1982-06-01 NO NO821824A patent/NO163494C/no unknown
- 1982-06-02 EP EP82302836A patent/EP0067619B1/en not_active Expired
- 1982-06-02 DE DE8282302836T patent/DE3275435D1/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| EP0067619B1 (en) | 1987-02-11 |
| US4437953A (en) | 1984-03-20 |
| NO821824L (no) | 1982-12-03 |
| DE3275435D1 (en) | 1987-03-19 |
| IN157298B (cg-RX-API-DMAC7.html) | 1986-02-22 |
| NO163494C (no) | 1990-06-06 |
| EP0067619A2 (en) | 1982-12-22 |
| NO163494B (no) | 1990-02-26 |
| ES8307926A1 (es) | 1983-08-01 |
| ES512734A0 (es) | 1983-08-01 |
| EP0067619A3 (en) | 1983-02-09 |
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