CA2363969C - Procede de recuperation de metaux precieux residuels dans des scories de fonderie et de convertisseur - Google Patents
Procede de recuperation de metaux precieux residuels dans des scories de fonderie et de convertisseur Download PDFInfo
- Publication number
- CA2363969C CA2363969C CA 2363969 CA2363969A CA2363969C CA 2363969 C CA2363969 C CA 2363969C CA 2363969 CA2363969 CA 2363969 CA 2363969 A CA2363969 A CA 2363969A CA 2363969 C CA2363969 C CA 2363969C
- Authority
- CA
- Canada
- Prior art keywords
- slag
- slags
- copper
- nickel
- process according
- 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 - Fee Related
Links
- 239000002893 slag Substances 0.000 title claims abstract description 231
- 238000000034 method Methods 0.000 title claims abstract description 35
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 33
- 239000002184 metal Substances 0.000 title claims abstract description 33
- 230000008569 process Effects 0.000 title claims abstract description 27
- 239000002699 waste material Substances 0.000 title claims description 35
- 238000011084 recovery Methods 0.000 title description 24
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 130
- 229910052802 copper Inorganic materials 0.000 claims abstract description 69
- 239000010949 copper Substances 0.000 claims abstract description 69
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 67
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 66
- 239000010941 cobalt Substances 0.000 claims abstract description 57
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 57
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 57
- 238000003723 Smelting Methods 0.000 claims abstract description 44
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 29
- 235000011149 sulphuric acid Nutrition 0.000 claims abstract description 29
- 239000011701 zinc Substances 0.000 claims abstract description 29
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 29
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000001117 sulphuric acid Substances 0.000 claims abstract description 27
- 239000010953 base metal Substances 0.000 claims abstract description 25
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 21
- 239000001301 oxygen Substances 0.000 claims abstract description 21
- 238000001816 cooling Methods 0.000 claims abstract description 19
- 238000002425 crystallisation Methods 0.000 claims abstract description 19
- 230000008025 crystallization Effects 0.000 claims abstract description 19
- 238000007711 solidification Methods 0.000 claims abstract description 18
- 230000008023 solidification Effects 0.000 claims abstract description 18
- BWFPGXWASODCHM-UHFFFAOYSA-N copper monosulfide Chemical compound [Cu]=S BWFPGXWASODCHM-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000006227 byproduct Substances 0.000 claims abstract description 5
- 239000012141 concentrate Substances 0.000 claims description 32
- 229910052840 fayalite Inorganic materials 0.000 claims description 30
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 27
- 239000002253 acid Substances 0.000 claims description 23
- 229910052742 iron Inorganic materials 0.000 claims description 15
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 11
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 8
- WWNBZGLDODTKEM-UHFFFAOYSA-N sulfanylidenenickel Chemical compound [Ni]=S WWNBZGLDODTKEM-UHFFFAOYSA-N 0.000 claims description 8
- 235000019738 Limestone Nutrition 0.000 claims description 6
- 239000006028 limestone Substances 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 239000005864 Sulphur Substances 0.000 claims description 3
- 230000029087 digestion Effects 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 2
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 238000004537 pulping Methods 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims description 2
- 239000000470 constituent Substances 0.000 claims 1
- 238000002386 leaching Methods 0.000 abstract description 50
- 238000000605 extraction Methods 0.000 abstract description 46
- 230000007774 longterm Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 45
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 17
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 14
- 239000000243 solution Substances 0.000 description 12
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 9
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 9
- 238000012545 processing Methods 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- 238000000926 separation method Methods 0.000 description 9
- 238000011282 treatment Methods 0.000 description 9
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 8
- 238000007792 addition Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 150000002739 metals Chemical class 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 238000006386 neutralization reaction Methods 0.000 description 7
- 239000000377 silicon dioxide Substances 0.000 description 7
- 238000010583 slow cooling Methods 0.000 description 7
- 230000036961 partial effect Effects 0.000 description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000011707 mineral Substances 0.000 description 5
- 235000010755 mineral Nutrition 0.000 description 5
- YFLLTMUVNFGTIW-UHFFFAOYSA-N nickel;sulfanylidenecopper Chemical compound [Ni].[Cu]=S YFLLTMUVNFGTIW-UHFFFAOYSA-N 0.000 description 5
- 229910017518 Cu Zn Inorganic materials 0.000 description 4
- 229910017709 Ni Co Inorganic materials 0.000 description 4
- 238000002441 X-ray diffraction Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- -1 ferrous metals Chemical class 0.000 description 4
- 239000013067 intermediate product Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000005188 flotation Methods 0.000 description 3
- 238000009854 hydrometallurgy Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 229910052604 silicate mineral Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 229910003266 NiCo Inorganic materials 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- QXZUUHYBWMWJHK-UHFFFAOYSA-N [Co].[Ni] Chemical compound [Co].[Ni] QXZUUHYBWMWJHK-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 150000004763 sulfides Chemical group 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- FQGMPQGXUXIOKI-UHFFFAOYSA-N [S--].[S--].[Cu++].[Zn++] Chemical compound [S--].[S--].[Cu++].[Zn++] FQGMPQGXUXIOKI-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005363 electrowinning Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009852 extractive metallurgy Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 238000011369 optimal treatment Methods 0.000 description 1
- 229910052592 oxide mineral Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 210000003625 skull Anatomy 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- HYHCSLBZRBJJCH-UHFFFAOYSA-M sodium hydrosulfide Chemical compound [Na+].[SH-] HYHCSLBZRBJJCH-UHFFFAOYSA-M 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
- C22B7/007—Wet processes by acid leaching
-
- 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
- C22B15/00—Obtaining copper
- C22B15/0063—Hydrometallurgy
- C22B15/0065—Leaching or slurrying
- C22B15/0067—Leaching or slurrying with acids or salts thereof
- C22B15/0071—Leaching or slurrying with acids or salts thereof containing sulfur
-
- 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
- C22B23/00—Obtaining nickel or cobalt
- C22B23/04—Obtaining nickel or cobalt by wet processes
- C22B23/0407—Leaching processes
- C22B23/0415—Leaching processes with acids or salt solutions except ammonium salts solutions
- C22B23/043—Sulfurated acids or salts thereof
-
- 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
- C22B23/00—Obtaining nickel or cobalt
- C22B23/04—Obtaining nickel or cobalt by wet processes
- C22B23/0453—Treatment or purification of solutions, e.g. obtained by leaching
- C22B23/0461—Treatment or purification of solutions, e.g. obtained by leaching by chemical methods
-
- 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)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacture And Refinement Of Metals (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2363969 CA2363969C (fr) | 2001-11-26 | 2001-11-26 | Procede de recuperation de metaux precieux residuels dans des scories de fonderie et de convertisseur |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2363969 CA2363969C (fr) | 2001-11-26 | 2001-11-26 | Procede de recuperation de metaux precieux residuels dans des scories de fonderie et de convertisseur |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2363969A1 CA2363969A1 (fr) | 2003-05-26 |
| CA2363969C true CA2363969C (fr) | 2009-01-13 |
Family
ID=4170684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2363969 Expired - Fee Related CA2363969C (fr) | 2001-11-26 | 2001-11-26 | Procede de recuperation de metaux precieux residuels dans des scories de fonderie et de convertisseur |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2363969C (fr) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI115638B (fi) * | 2002-12-05 | 2005-06-15 | Outokumpu Oy | Menetelmä kuonan käsittelemiseksi |
| FI116686B (fi) * | 2003-07-17 | 2006-01-31 | Outokumpu Oy | Menetelmä kuparirikasteiden sulattamiseksi |
| GR1006856B (el) * | 2006-10-06 | 2010-07-06 | Νικολαος Κωνσταντινου Χρυσοχου | Μεθοδος παραγωγης αλατων δισθενους και τρισθενους σιδηρου με σκωρια μεταλλουργιας σιδηρονικελιου ή και χαλυβουργιας, για χρηση στην παραγωγικη διαδικασια τσιμεντου και αλλου |
| BG66201B1 (bg) * | 2008-09-23 | 2012-01-31 | Георги ГЮРОВ | Метод за рециклиране на шлаки от производството на мед |
| CN108265178B (zh) * | 2018-03-08 | 2019-10-01 | 蒋央芳 | 一种钴镍冶金废水渣的处理方法 |
| CN108977652B (zh) * | 2018-09-12 | 2019-11-22 | 郑忆依 | 一种钴镍冶金的废水渣的资源化利用方法 |
| CN111225988B (zh) * | 2018-09-29 | 2022-04-29 | 长沙有色冶金设计研究院有限公司 | 硫化铜精矿的氧压浸出方法及铜冶炼方法 |
| CN112662877B (zh) * | 2020-12-02 | 2023-12-12 | 广西科技师范学院 | 一种从电解锰硫化渣中制备高纯硫酸镍的方法 |
| CN113151689A (zh) * | 2021-04-16 | 2021-07-23 | 内蒙古兴安铜锌冶炼有限公司 | 一种湿法炼锌锌粉锑盐净化渣中钴的富集方法 |
| CN113430386A (zh) * | 2021-05-31 | 2021-09-24 | 金川集团股份有限公司 | 一种铜熔炼炉渣二次镍返料富集铜、镍的方法 |
| CN113621819B (zh) * | 2021-07-21 | 2022-11-15 | 广东邦普循环科技有限公司 | 从低冰镍转炉渣中提取有价金属的方法 |
| CN116441016B (zh) * | 2023-04-10 | 2025-09-16 | 江西铜业股份有限公司 | 一种烟灰就地筛分破碎及密闭式输送的系统及其方法 |
| CN117735486B (zh) * | 2023-12-20 | 2025-11-18 | 中南大学 | 一种金属硫渣预处理强化硫磺热熔分离的方法 |
| CN117512344B (zh) * | 2023-12-28 | 2024-03-15 | 内蒙古科技大学 | 一种煤气化渣中锰镁组分的分离方法 |
-
2001
- 2001-11-26 CA CA 2363969 patent/CA2363969C/fr not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2363969A1 (fr) | 2003-05-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20131126 |