WO2013045855A1 - Procédé de traitement d'un effluent contenant des métaux - Google Patents
Procédé de traitement d'un effluent contenant des métaux Download PDFInfo
- Publication number
- WO2013045855A1 WO2013045855A1 PCT/FR2012/052197 FR2012052197W WO2013045855A1 WO 2013045855 A1 WO2013045855 A1 WO 2013045855A1 FR 2012052197 W FR2012052197 W FR 2012052197W WO 2013045855 A1 WO2013045855 A1 WO 2013045855A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- extraction
- chloride ions
- liquid
- effluent
- aluminum
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 45
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 43
- 239000002184 metal Substances 0.000 title claims abstract description 43
- 150000002739 metals Chemical class 0.000 title claims abstract description 21
- 238000000605 extraction Methods 0.000 claims abstract description 121
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 51
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 41
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 30
- 239000000203 mixture Substances 0.000 claims abstract description 30
- 238000000622 liquid--liquid extraction Methods 0.000 claims abstract description 17
- 238000000638 solvent extraction Methods 0.000 claims abstract description 17
- 238000010668 complexation reaction Methods 0.000 claims abstract description 10
- 239000003085 diluting agent Substances 0.000 claims description 13
- SEGLCEQVOFDUPX-UHFFFAOYSA-N di-(2-ethylhexyl)phosphoric acid Chemical compound CCCCC(CC)COP(O)(=O)OCC(CC)CCCC SEGLCEQVOFDUPX-UHFFFAOYSA-N 0.000 claims description 12
- LJKDOMVGKKPJBH-UHFFFAOYSA-N 2-ethylhexyl dihydrogen phosphate Chemical compound CCCCC(CC)COP(O)(O)=O LJKDOMVGKKPJBH-UHFFFAOYSA-N 0.000 claims description 10
- 229910021645 metal ion Inorganic materials 0.000 claims description 9
- 230000008929 regeneration Effects 0.000 claims description 6
- 238000011069 regeneration method Methods 0.000 claims description 6
- 229910052738 indium Inorganic materials 0.000 claims description 4
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 3
- 150000003008 phosphonic acid esters Chemical class 0.000 claims description 2
- 235000011007 phosphoric acid Nutrition 0.000 claims description 2
- 150000003016 phosphoric acids Chemical class 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 abstract 1
- 150000001805 chlorine compounds Chemical class 0.000 description 30
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- 239000011701 zinc Substances 0.000 description 14
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 12
- ZMBHCYHQLYEYDV-UHFFFAOYSA-N trioctylphosphine oxide Chemical compound CCCCCCCCP(=O)(CCCCCCCC)CCCCCCCC ZMBHCYHQLYEYDV-UHFFFAOYSA-N 0.000 description 12
- 238000011084 recovery Methods 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000008346 aqueous phase Substances 0.000 description 9
- 238000000926 separation method Methods 0.000 description 9
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 8
- 238000010908 decantation Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 239000012074 organic phase Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 229910052725 zinc Inorganic materials 0.000 description 8
- -1 aluminum ions Chemical group 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 7
- 239000003960 organic solvent Substances 0.000 description 7
- 241000894006 Bacteria Species 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 6
- 238000005119 centrifugation Methods 0.000 description 6
- 238000009826 distribution Methods 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 229940094933 n-dodecane Drugs 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 5
- 239000010949 copper Substances 0.000 description 4
- 239000011541 reaction mixture Substances 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 150000002823 nitrates Chemical class 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 238000004255 ion exchange chromatography Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 235000021317 phosphate Nutrition 0.000 description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 235000011149 sulphuric acid Nutrition 0.000 description 2
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 2
- JPGXOMADPRULAC-UHFFFAOYSA-N 1-[butoxy(butyl)phosphoryl]oxybutane Chemical group CCCCOP(=O)(CCCC)OCCCC JPGXOMADPRULAC-UHFFFAOYSA-N 0.000 description 1
- 241000605272 Acidithiobacillus thiooxidans Species 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000012993 chemical processing Methods 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000000658 coextraction Methods 0.000 description 1
- 238000004737 colorimetric analysis Methods 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000009089 cytolysis Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- SNRUBQQJIBEYMU-NJFSPNSNSA-N dodecane Chemical group CCCCCCCCCCC[14CH3] SNRUBQQJIBEYMU-NJFSPNSNSA-N 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000020774 essential nutrients Nutrition 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- NWOGWXZLSXEADL-UHFFFAOYSA-N hexyl(oxido)phosphanium Chemical group CCCCCC[PH2]=O NWOGWXZLSXEADL-UHFFFAOYSA-N 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910001510 metal chloride Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- SWMBQMGPRYJSCI-UHFFFAOYSA-N octylphosphane Chemical group CCCCCCCCP SWMBQMGPRYJSCI-UHFFFAOYSA-N 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 230000007928 solubilization Effects 0.000 description 1
- 238000005063 solubilization Methods 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 231100000701 toxic element Toxicity 0.000 description 1
- RMZAYIKUYWXQPB-UHFFFAOYSA-N trioctylphosphane Chemical compound CCCCCCCCP(CCCCCCCC)CCCCCCCC RMZAYIKUYWXQPB-UHFFFAOYSA-N 0.000 description 1
- DNYWZCXLKNTFFI-UHFFFAOYSA-N uranium Chemical compound [U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U] DNYWZCXLKNTFFI-UHFFFAOYSA-N 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/26—Treatment of water, waste water, or sewage by extraction
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
- C02F1/683—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water by addition of complex-forming compounds
-
- 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
- C22B21/00—Obtaining aluminium
- C22B21/0015—Obtaining aluminium 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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/26—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
- C22B3/38—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds containing phosphorus
- C22B3/381—Phosphines, e.g. compounds with the formula PRnH3-n, with n = 0-3
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/26—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
- C22B3/40—Mixtures
- C22B3/408—Mixtures using a mixture of phosphorus-based acid derivatives of different types
-
- 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
- C22B58/00—Obtaining gallium or indium
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Definitions
- the invention relates to a method for treating a metal-containing effluent, such as an effluent from the mining industry, upstream or on the loop of a bioleaching treatment.
- the subject of the invention is a process for treating metal-containing effluents, making it possible to significantly and selectively reduce the concentration of chloride ions, and metal ions, in particular aluminum, which are undesirable for subsequent treatment in bioleaching. of this effluent.
- hydrometallurgical treatment is a widely used means of producing metals. It consists in the solubilization of metals by the action of an acid or a base on ore (lixiviation), then in the purification of this solution obtained in order to separate the different metals, and finally the electrolysis to recover the metal under its metallic form.
- Mining mines may be located in areas where access to water is limited. The industry must therefore use its closed-loop water which, through leaching practiced for decades, gradually polluted these low resources with salts containing chlorides, sulphates and metals, such as, for example: copper, zinc, aluminum etc.
- the method according to the invention relates to the reduction or elimination of contaminants, salts or metals, which render this effluent unsuitable for recycling by microorganisms, and in particular, to be able to achieve this reduction or elimination selectively and controlled, and thus differs significantly from previous processes, which aim at the extraction of metals for the recovery of the effluent.
- the application WO 95/06004 describes a sludge treatment process, produced during a wastewater treatment, in several steps for extracting iron or aluminum from coagulants and phosphorus in order to valorize them. , and to precipitate heavy metals to eliminate them.
- the method comprises a step of dissolving the sludge, then a liquid-liquid extraction of a metal (iron or aluminum), then a series of precipitation / filtration in order to successively remove heavy metals and phosphorus.
- the pre-acidified sludge treatment process from wastewater containing metal ions and organic matter is described in WO 95/06005. This process consists of an oxidation of the organic material present, before the recovery of a metal (in particular Fe or Al) by liquid-liquid extraction.
- Application EP-76094 describes the principle of liquid-liquid extraction applied to the treatment of wastewater, and the recovery of aluminum from a coagulation step by liquid-liquid extraction with an equimolar mixture of MEHPA / DEHPA to pH 3-4.
- the invention thus relates to a method for treating an effluent containing metals, comprising:
- step (s) for extracting the chloride ions at least one step for extracting the aluminum present in the raffinate resulting from the step (s) for extracting the chloride ions.
- the extraction of the chloride ions present in the effluent comprises their complexation with metals capable of forming neutral complexes with them, such as, for example, Zn 2+ , Fe 3+ , Cu 2+ ions. , ln 3+ .
- metals capable of forming neutral complexes with them, such as, for example, Zn 2+ , Fe 3+ , Cu 2+ ions. , ln 3+ .
- These metals may be present in the initial composition of the effluent to be treated, or, alternatively, be added thereto, for example in the form of metal salt powder (eg ZnSO 4 , CuSO 4 ) or of metal salt solution, so to obtain that they are present in the ratio of at least the stoichiometric amount with respect to the chloride ions, according to the complexation reactions.
- M represents the metal forming the complex with the chlorides and n is an integer of 1 to 3, preferably 2 or 3.
- the amount of metals in the chloride extraction step (s) is equal to 1 or 1.5 times the stoichiometry of the chloride complexing reaction.
- the presence of metals in this amount makes it possible to control the reduction of chlorides in the effluent.
- the concentration of chlorides or metals in the effluent to be treated can be measured by standard methods of analysis. There may be mentioned, for example, ion chromatography or argentimetric assay.
- the extraction agent can be used alone as an organic phase, or, alternatively, mixed with an organic diluent.
- the mixture of an extractant (active compound) and an organic diluent (inert compound) is referred to as an "organic solvent".
- the method according to the invention is implemented continuously.
- the method according to the invention may further comprise at least one step commonly known as "desextraction” allowing recovery of the extracted element and / or regeneration of the extraction agent or organic solvent from the extract from the extraction step or steps mentioned above.
- This step can be carried out by contacting the extract containing the extraction agent and the extracted element with a suitable aqueous solvent, followed by a liquid-liquid separation by conventional means, such as decantation, centrifugation, etc. .
- the organic diluent may be selected from organic diluents commonly used in the technical field.
- organic diluents commonly used in the technical field.
- a suitable diluent for the purposes of extraction may, for example, be selected from saturated or unsaturated aliphatic hydrocarbons.
- the extraction agent used in the chloride ion extraction step (s) may consist of a single type of active compound or a mixture of active compounds.
- the extraction agent is selected, for example, from trialkylphosphine oxides and mixtures thereof, and phosphonic acid esters.
- trioctylphosphine oxide can be used, mixtures of tertiary octylphosphine and hexylphosphine oxides, tri-n-butylphosphate (TBP) and di-butylbutylphosphonate (DBBP).
- Preferred conditions of the step (s) of extraction of chloride ions can be chosen from the following:
- volume ratio aqueous phase / organic phase A / O is between 1.6 and 3.5;
- the concentration of the extractant in the organic solvent is 0.2 to 1 M.
- the temperature during contacting of the crude effluent with the extraction agent and the organic solvent (reaction mixture) is from 30 ° C. to 55 ° C .;
- the pH of the reaction mixture is less than or equal to 2.5.
- Chloride extraction according to the process of the invention may be carried out in one or more extraction stages, in particular in two or three extraction stages.
- the liquid-liquid extraction of chlorides has the advantage of being selective, which makes it possible to treat streams containing a large amount of salts.
- selective extraction it is meant that the extraction makes it possible to extract the chlorides without simultaneously extracting other types of associated ions, such as, for example, nitrates or sulphates.
- the recovery of the extracted element and / or the regeneration of the extraction agent comprises contacting the organic extract containing the complexed chloride ions with demineralised neutral or slightly acidic water, and then by liquid-liquid separation by usual means such as decantation, centrifugation, separation by selective membrane, etc.
- the water containing the chlorides will subsequently be treated and possibly recovered, while the extraction agent may be reinjected. for a new extraction step.
- the recovery of the extracted element, and / or the regeneration of the extraction agent according to the process of the invention can be carried out in one or more extraction stages, in particular in two or three extraction stages.
- the step (s) of extracting the aluminum in the raffinate resulting from the step (s) of extraction of the chloride ions is preferably carried out by liquid-liquid extraction in the presence of a dichloride agent. extraction, used alone or in admixture with an organic diluent as described above.
- the liquid-liquid extraction during each of the extraction steps of the process according to the invention has the advantage of being selective, which makes it possible to treat streams containing a large amount of salts.
- the extraction agent is preferably chosen from phosphoric acids, in particular mono- (2-ethylhexyl) phosphoric acid (MEHPA), di (2-ethylhexyl) phosphoric acid (DEHPA) and mixtures thereof. .
- MEHPA mono- (2-ethylhexyl) phosphoric acid
- DEHPA di (2-ethylhexyl) phosphoric acid
- Preferred conditions of the step (s) of extraction of aluminum from the raffinate from the step (s) of extraction of chloride ions can be chosen from the following:
- the volume ratio aqueous phase / organic phase A / O is from 1 to 2; the concentration of the extractant in the organic solvent is from 0.8 to 2M, ie approximately 25 to 55%, expressed in% by volume;
- the temperature during the contacting of the effluent without chlorides with the extraction agent and the organic solvent (reaction mixture) is from 25 ° C. to 40 ° C.
- the pH of the reaction mixture is less than or equal to 2.5.
- the selectivity towards aluminum relative to other metals present (Zn 2+ , Mn 2+ ) is increased.
- the correction with respect to the pH of the effluent to be treated is limited.
- the extraction of aluminum according to the process of the invention may be carried out in one or more extraction stages, in particular in two or three extraction stages.
- the recovery of the extracted element, and / or the regeneration of the extraction agent comprises contacting the organic extract containing aluminum with a strong acid, for example sulfuric acid.
- the recovery of the extracted element, and / or the regeneration of the extraction agent according to the process of the invention can be carried out in one or more extraction stages, in particular in two or three extraction stages.
- Preferred embodiments of the method according to the invention are, for example, the following:
- the crude effluent is brought into contact with the extraction agent in the organic diluent, optionally supplemented with an alcohol.
- a preferred extraction agent is trioctylphosphine oxide (TOPO), preferably used at a concentration between 0.2M and 1M, preferably between 0.23M and 0.5M.
- TOPO trioctylphosphine oxide
- at least one metal capable of forming complexes with the chloride ions may be added to the raw effluent in at least stoichiometric amount relative to the chloride ions, depending on the reactions complexation.
- a preferred organic diluent is dodecane, optionally supplemented with octanol.
- the mixture is subjected to violent stirring for a period of 30sec to 3min, preferably less than one minute, at a temperature such that the extraction agent does not crystallize, for example from 30 ° C to 55 ° C in the case of the TOPO.
- the pH of the mixture may be, for example, less than or equal to 2.5, preferably 2.
- the ratio of aqueous / organic flow rates is preferably 1.6 to 3.5.
- the extraction of the chlorides according to the process of the invention can be carried out using at least one extraction stage.
- the liquid-liquid separation can be carried out by usual means, such as decantation, centrifugation, etc.
- the complexed extract of metal chloride complex may be brought into contact with demineralized or slightly acidic water, with stirring, for a period of less than or equal to 1 min at a temperature greater than about 30 ° C.
- the ratio of aqueous / organic flow rates is preferably 0.5 to 1.
- the liquid-liquid separation can be carried out by usual means, such as decantation, centrifugation, etc.
- the water containing the chlorides will subsequently be treated and possibly recovered.
- the recycled organic extract can be reinjected into the contact step with the raw effluent.
- a preferred organic solvent comprises a mixture of MEHPA and DEHPA (extraction agent) in dodecane optionally supplemented with octanol (organic diluent) in the following proportions: 1 1, 25% MEHPA + 13.75% DEHPA + 75% dodecane, expressed in volume%, with a possible addition of octanol.
- the concentration of MEHPA is preferably 1, 25 to 22.5% and DEHPA 13.75 to 27.5%, expressed in volume%.
- the mixture is subjected to violent stirring for a period of 30 seconds to 3 minutes at a temperature of 25 ° C to 40 ° C.
- the pH of the mixture may be, for example, between 1 and 2, preferably less than 2, and may be controlled to neutralize the acidity released by the solvent to improve the selectivity.
- the ratio of aqueous / organic flow rates is preferably 1 to 2.
- the liquid-liquid separation can be carried out by usual means, such as decantation, centrifugation, etc.
- the aluminum-loaded extract may be brought into contact with a strong acid (sulfuric acid for example) which is highly concentrated (1M to 3M), with violent stirring, for a duration of less than or equal to 2 min, at ambient temperature or slightly higher (30 ° C).
- a strong acid sulfuric acid for example
- 1M to 3M highly concentrated
- the ratio of aqueous / organic flow rates is preferably 1.
- the liquid-liquid separation can be carried out by usual means, such as decantation, centrifugation, etc.
- the acid solution containing the aluminum may subsequently be treated or upgraded.
- the recycled organic extract can be reinjected into the contact step with the chloride-free effluent.
- each of the steps for extracting the chlorides, the aluminum and / or the extraction agent is carried out by liquid-liquid extraction in an extraction stage or more, in particular in two or three extraction stages. .
- the step (s) of extraction of the chloride ions and / or the step (s) extraction of aluminum present in the raffinate from the step (s) also makes it possible to co-extract metal ions present, in particular indium.
- the purified aqueous effluent is capable of being subjected to a biolixiviation treatment using chemolithotrophic bacteria, such as than those of the species Acidithiobacillus thiooxidans, in particular of the type described in application US2007 / 0042482.
- concentrations of less than 1 g / L are set as final concentrations to be achieved in chloride and aluminum.
- the analyzes in aqueous phase were carried out by ion chromatography according to standard NF EN ISO 10304-1 for the anions, and by ICP-AES according to standard NFEN 11885 / MO-176 for the cations (after mineralization according to MO-0280). Iron was analyzed by colorimetry. The organic phase concentrations are calculated from the measured volumes and the results of the aqueous phase analyzes.
- the extraction is carried out in 3 stages (two successive extraction stages) under the conditions indicated in Table 3 below.
- the dotted line A / O symbol --- represents the extraction of chlorides with a starting chloride concentration of 7 g / l in an extraction stage with an A / O ratio of 1, 6: it shows a residual concentration of chlorides in the aqueous phase of 1.5 g / l.
- the straight line in dashed lines represents the extraction of chlorides with a starting chloride concentration of 7 g / l in two extraction stages with an A / O ratio of 1, 6: it shows a concentration residual chloride in the aqueous phase of 0.5 g / l.
- Example 3 Extraction of chlorides oxide tri-octylphosphine (Cvanex 921 ®) and aluminum with a mixture of MEHPA / DEHPA
- composition of the initial solution is given in Table 4 below:
- composition of the actual effluent is given in Table 8 below, before and after zinc doping.
- the amount of zinc added during the doping is 9.1 g / L
- the zinc extraction decreases in percentage, but not in absolute value, this being due to its presence in a quantity 30 times greater than the quantity present in the undoped zinc initial solution C;
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Abstract
Description
Claims
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AU2012314172A AU2012314172A1 (en) | 2011-09-30 | 2012-09-28 | Process for treating an effluent that contains metals |
BR112014003241A BR112014003241A2 (pt) | 2011-09-30 | 2012-09-28 | processo de tratamento de um efluente contendo metais |
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FR1158860A FR2980788B1 (fr) | 2011-09-30 | 2011-09-30 | Procede de traitement d'un effluent contenant des metaux |
FR1158860 | 2011-09-30 |
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WO2013045855A1 true WO2013045855A1 (fr) | 2013-04-04 |
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PCT/FR2012/052197 WO2013045855A1 (fr) | 2011-09-30 | 2012-09-28 | Procédé de traitement d'un effluent contenant des métaux |
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AR (1) | AR088181A1 (fr) |
AU (1) | AU2012314172A1 (fr) |
BR (1) | BR112014003241A2 (fr) |
CL (1) | CL2014000683A1 (fr) |
FR (1) | FR2980788B1 (fr) |
PE (1) | PE20141026A1 (fr) |
WO (1) | WO2013045855A1 (fr) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0076094A2 (fr) | 1981-09-29 | 1983-04-06 | Rtr Riotinto Til Holding S.A. | Extraction |
WO1995006005A1 (fr) | 1993-08-26 | 1995-03-02 | Kemira Oy | Procede pour recuperer au moins un metal contenu dans une boue d'eaux usees acidifiee |
WO1995006004A1 (fr) | 1993-08-26 | 1995-03-02 | Kemira Oy | Procede pour le traitement de boues d'eaux usees contenant au moins un metal |
US20040017991A1 (en) | 2002-02-22 | 2004-01-29 | Bookham Technology Limited | Refractive index control |
US20040179991A1 (en) * | 2003-03-10 | 2004-09-16 | Teck Cominco Metals Ltd. | Solvent extraction of a halide from a aqueous sulphate solution |
US20070042482A1 (en) | 2005-08-17 | 2007-02-22 | Biosigma S.A. | Sulfur-oxidizing bacteria and their use in bioleaching processes for sulfured copper minerals |
US20070169587A1 (en) | 2004-07-16 | 2007-07-26 | De Kock Sanette H | Optimization of Bioleaching Process |
WO2008141423A1 (fr) | 2007-05-21 | 2008-11-27 | Exploration Orbite Vspa Inc. | Procédés d'extraction de l'aluminium et du fer à partir de minerais alumineux |
-
2011
- 2011-09-30 FR FR1158860A patent/FR2980788B1/fr not_active Expired - Fee Related
-
2012
- 2012-09-28 AU AU2012314172A patent/AU2012314172A1/en not_active Abandoned
- 2012-09-28 BR BR112014003241A patent/BR112014003241A2/pt not_active IP Right Cessation
- 2012-09-28 PE PE2014000447A patent/PE20141026A1/es not_active Application Discontinuation
- 2012-09-28 WO PCT/FR2012/052197 patent/WO2013045855A1/fr active Application Filing
- 2012-09-28 AR ARP120103612A patent/AR088181A1/es unknown
-
2014
- 2014-03-20 CL CL2014000683A patent/CL2014000683A1/es unknown
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0076094A2 (fr) | 1981-09-29 | 1983-04-06 | Rtr Riotinto Til Holding S.A. | Extraction |
WO1995006005A1 (fr) | 1993-08-26 | 1995-03-02 | Kemira Oy | Procede pour recuperer au moins un metal contenu dans une boue d'eaux usees acidifiee |
WO1995006004A1 (fr) | 1993-08-26 | 1995-03-02 | Kemira Oy | Procede pour le traitement de boues d'eaux usees contenant au moins un metal |
US20040017991A1 (en) | 2002-02-22 | 2004-01-29 | Bookham Technology Limited | Refractive index control |
US20040179991A1 (en) * | 2003-03-10 | 2004-09-16 | Teck Cominco Metals Ltd. | Solvent extraction of a halide from a aqueous sulphate solution |
US20070169587A1 (en) | 2004-07-16 | 2007-07-26 | De Kock Sanette H | Optimization of Bioleaching Process |
US20070042482A1 (en) | 2005-08-17 | 2007-02-22 | Biosigma S.A. | Sulfur-oxidizing bacteria and their use in bioleaching processes for sulfured copper minerals |
WO2008141423A1 (fr) | 2007-05-21 | 2008-11-27 | Exploration Orbite Vspa Inc. | Procédés d'extraction de l'aluminium et du fer à partir de minerais alumineux |
Non-Patent Citations (5)
Title |
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BINA GUPTA ET AL: "Liquid-liquid extraction and recovery of indium using Cyanex 923", ANALYTICA CHIMICA ACTA, vol. 513, no. 2, 1 June 2004 (2004-06-01), pages 463 - 471, XP055026793, ISSN: 0003-2670, DOI: 10.1016/j.aca.2004.02.036 * |
EL DESSOUKY ET AL: "Solvent extraction separation of Zn(II), Fe(II), Fe(III) and Cd(II) using tributylphosphate and CYANEX 921 in kerosene from chloride medium", CHEMICAL ENGINEERING AND PROCESSING, ELSEVIER SEQUOIA, LAUSANNE, CH, vol. 47, no. 2, 16 March 2007 (2007-03-16), pages 177 - 183, XP022339711, ISSN: 0255-2701, DOI: 10.1016/J.CEP.2007.03.002 * |
EL DESSOUKY S.I ET AL., CHEMICAL ENGINEERING AND PROCESSING: PROCESS INTENSIFICATION, vol. 47, no. 2, 2008, pages 177 - 183 |
P.N.PHALKE ET AL., SEPARATIONS TECHNOLOGY, vol. 6, 1996, pages 247 - 251 |
YUKO HASEGAWA ET AL: "Solvent extraction of 3B group metal ions from hydrochloric acid with trioctylphosphine oxide", JOURNAL OF INORGANIC AND NUCLEAR CHEMISTRY, vol. 42, 1 January 1980 (1980-01-01), pages 1487 - 1489, XP055026756 * |
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Publication number | Publication date |
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AU2012314172A1 (en) | 2014-05-15 |
CL2014000683A1 (es) | 2014-11-14 |
FR2980788A1 (fr) | 2013-04-05 |
PE20141026A1 (es) | 2014-08-25 |
BR112014003241A2 (pt) | 2017-03-01 |
AR088181A1 (es) | 2014-05-14 |
FR2980788B1 (fr) | 2014-11-07 |
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