FI110190B - Nickel recovery by lump extraction - Google Patents
Nickel recovery by lump extraction Download PDFInfo
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- FI110190B FI110190B FI953488A FI953488A FI110190B FI 110190 B FI110190 B FI 110190B FI 953488 A FI953488 A FI 953488A FI 953488 A FI953488 A FI 953488A FI 110190 B FI110190 B FI 110190B
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- nickel
- ore
- solution
- biological
- thiobacillus
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims description 64
- 229910052759 nickel Inorganic materials 0.000 title claims description 32
- 238000000605 extraction Methods 0.000 title description 8
- 238000011084 recovery Methods 0.000 title description 2
- 238000000034 method Methods 0.000 claims description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 21
- 229910052742 iron Inorganic materials 0.000 claims description 10
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 8
- 230000003647 oxidation Effects 0.000 claims description 8
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- 241000605222 Acidithiobacillus ferrooxidans Species 0.000 claims description 6
- 238000002386 leaching Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 229910000863 Ferronickel Inorganic materials 0.000 claims description 4
- 238000005342 ion exchange Methods 0.000 claims description 4
- 241000605272 Acidithiobacillus thiooxidans Species 0.000 claims description 3
- 241000589921 Leptospirillum ferrooxidans Species 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 3
- 241000894006 Bacteria Species 0.000 claims description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 2
- 239000003153 chemical reaction reagent Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 229910021653 sulphate ion Inorganic materials 0.000 claims 1
- 230000001580 bacterial effect Effects 0.000 description 8
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 6
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 6
- WWNBZGLDODTKEM-UHFFFAOYSA-N sulfanylidenenickel Chemical compound [Ni]=S WWNBZGLDODTKEM-UHFFFAOYSA-N 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000011790 ferrous sulphate Substances 0.000 description 3
- 235000003891 ferrous sulphate Nutrition 0.000 description 3
- 239000003456 ion exchange resin Substances 0.000 description 3
- 229920003303 ion-exchange polymer Polymers 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 229910052952 pyrrhotite Inorganic materials 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 229910052569 sulfide mineral Inorganic materials 0.000 description 3
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 2
- 229920001429 chelating resin Polymers 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 241000605118 Thiobacillus Species 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 238000004140 cleaning 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
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 229910052935 jarosite Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052953 millerite Inorganic materials 0.000 description 1
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 229910052954 pentlandite Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000002023 wood Substances 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
- C22B23/00—Obtaining nickel or cobalt
- C22B23/04—Obtaining nickel or cobalt by wet processes
- C22B23/0407—Leaching 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
- 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
-
- 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
- C22B3/18—Extraction of metal compounds from ores or concentrates by wet processes with the aid of microorganisms or enzymes, e.g. bacteria or algae
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biotechnology (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Microbiology (AREA)
- Biochemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
1 1101901 110190
Nikkelin talteenotto kasauuttoa käyttämällä - Utvinning av nickel genom använd-ning av hoplakning 5 Tämä keksintö koskee nikkelin talteenottoa sulfidimalmeista.The present invention relates to the recovery of nickel from sulphide ores.
Nikkelimetallia on otettu talteen nikkelisulfidia sisältävistä malmioista konventionaalisilla menetelmillä, joissa malmi jauhetaan hienoksi ja nikkelisulfidimineraalit konsentroidaan vaahdottamalla nikkelisulfidikonsentraatin tuottamiseksi. Nikkeli-10 sulfidimineraalit voivat olla pentlandiittina, pyrrhotiittina, milleriittina tai muina sul- fidimineraaleina.Nickel metal has been recovered from nickel sulfide-containing ores by conventional methods in which the ore is ground and the nickel sulfide minerals are concentrated by flotation to produce a nickel sulfide concentrate. The sulfide minerals of nickel-10 may be in the form of pentlandite, pyrrhotite, millerite or other sulfide minerals.
Konsentraatti käsitellään edelleen sulattamalla ja pelkistämällä nikkeliä sisältävän ensisulatteen, joka sisältää nikkeliä, kobolttia, kuparia ja rautaa, valmistamiseksi.The concentrate is further processed by smelting and reduction to produce a nickel-containing primary alloy containing nickel, cobalt, copper and iron.
15 Ensisulatteen raffinoimiseksi puhtaan metallin tuottamista varten tunnetaan erilaisia menetelmiä. Niitä ovat uuttaminen, paineuutto, vetypelkistys, elektrolyyttinen rikas-tus, karbonyylimenetelmä ja niin edelleen. Yleensä puhdistusmenetelmät ovat kalliita ja tuottavat nikkelimetallia erilaisina puhtausasteina, jotka karkeasti ottaen riippuvat käytetyn menetelmän hinnasta.Various methods are known for refining a primary melt to produce pure metal. These include extraction, pressure extraction, hydrogen reduction, electrolytic enrichment, carbonyl process and so on. Generally, purification processes are expensive and produce nickel metal in varying degrees of purity, which roughly depend on the cost of the process used.
20 I Nikkelillä on monenlaista käyttöä, mutta sen käyttö ruostumattomassa teräksessä käy yhä hallitsevammaksi. Ruostumatonta terästä varten nikkelimetallin ei tarvitse olla I · ‘ t yhtä puhdasta kuin muita sovelluksia varten ja sitä voidaan käyttää ferronikkelinä.20 I Nickel has many uses, but its use in stainless steel is becoming more prevalent. For stainless steel, nickel metal need not be as pure as other applications and can be used as ferronickel.
; Ferronikkeli valmistetaan muista nikkelimalmeista kuin sulfidimalmeista. Jos kui- ,, ·; 25 tenkin on mahdollista valmistaa ferronikkeliä sulfidimalmeista, voidaan välttää puh- ; ;' taan nikkelin tuottamiseen tarvittavaa puhdistus, kun ruostumattomaan teräkseen : : : tarkoitetun nikkelin ei tarvitse olla puhdistettua.; Ferro-nickel is manufactured from nickel ores other than sulphide ores. If if- ,, ·; Although it is possible to make ferric nickel from sulphide ores, it is possible to avoid pure; ; ' nickel for cleaning purposes, when stainless steel::: nickel need not be refined.
* »* * * * » · ·* »* * * *» · ·
Keksintö koskee menetelmää epäpuhtaan nikkelin tuottamiseksi ferronikkelin muo-·,· · 30 dossasulfidimalmeista.The invention relates to a process for the production of impure nickel from ferric nickel dosulfide ores.
,',: Keksintö koskee menetelmää nikkelin tuottamiseksi sulfidimalmista, jossa menetel- . mässä malmille suoritetaan kasauutto, uutosta saatu nikkelisulfaatin ja rautasulfaatin | . liuos käsitellään jollakin liuoteuutto- tai ioninvaihtoreagenssilla, joka on selektiivi- ! 35 sempi nikkelin kuin ferroraudan suhteen, jolloin nikkeli erottuu raudasta ja siirretään : _..: konsentroituna eluaattiliuokseen ja eluaattiliuokselle suoritetaan elektrolyyttinen ri- kastusprosessi ferronikkelin tuottamiseksi.The invention relates to a process for the production of nickel from a sulfide ore, wherein Pulp leaching of Malmi, nickel sulphate and ferrous sulphate extracted | . the solution is treated with a solvent extraction or ion-exchange reagent which is selective! 35 nickel than ferric iron, whereby the nickel is separated from the iron and transferred: concentrated to the eluate solution and the eluate solution is subjected to an electrolytic enrichment process to produce ferric nickel.
2 1101902 110190
Uuttomenetelmä voi sisältää ensimmäisen vaiheen, jossa malmi käsitellään ferrisul-faattiliuoksella, jossa on biologisia kantoja, jotka edistävät biologista hapettumista?.The extraction process may include the first step of treating the ore with a ferric sulfate solution containing biological strains that promote biological oxidation.
Biologinen hapetusprosessi voidaan toteuttaa käyttämällä Thiobacillus ferrooxidan-5 siä.The biological oxidation process can be carried out using Thiobacillus ferrooxidan-5.
! Hapetusvaiheessa käytetään suositeltavimmin yhden tai useamman Thiobacillus fer- rooxidansin, Thiobacillus thiooxidansin ja Leptospirillum ferrooxidansin seosta.! In the oxidation step, a mixture of one or more Thiobacillus ferrooxidans, Thiobacillus thiooxidans and Leptospirillum ferrooxidans is preferably used.
10 Thiobacillus ferrooxidans muodostuu suositeltavimmin pääasiassa kannasta TF-FC-1, joka kuvataan australialaisessa patenttijulkaisussa n:o 618177 ja joka on talletettu talletusnumerolla N 90/010723 Australian Government Analytical Labora-toriesiin.10 Thiobacillus ferrooxidans is most preferably composed of strain TF-FC-1, which is described in Australian Patent Publication No. 618177, deposited under accession number N 90/010723 with the Australian Government Analytical Laboratory.
15 Liuosta, joka edistää bakteerien aktiivisuutta, voidaan säädellä konsentraation, pH:n tai ravinteiden suhteen.A solution that promotes bacterial activity can be regulated in terms of concentration, pH or nutrients.
Lopuksi malmi pestään ja liuos erotetaan malmikasasta.Finally, the ore is washed and the solution is separated from the ore.
20 Ensimmäistä uuttovaihetta voidaan jatkaa 2-10 vuorokauden ajan.The first extraction step can be continued for 2 to 10 days.
; . Töinen vaihe voi kestää 100-300 vuorokautta, tyypillisesti noin 200 vuorokautta.; . The working phase can last from 100 to 300 days, typically about 200 days.
• · · : V, Toisessa vaiheessa biologisen liuoksen pH voi olla 1,8 - 3,5, tyypillisesti noin 3,0.In the second step, the pH of the biological solution may be 1.8 to 3.5, typically about 3.0.
; :*25 • · · ‘· Sulfidimalmi murskataan suositeltavimmin alle 6 mm:n kokoon.; : * 25 • · · '· Sulphide ore is preferably crushed to a size less than 6 mm.
• · · • I »• · · • I »
Keksintö koskee vielä menetelmää nikkelin tuottamiseksi sulfidimalmista, joka me- 1 · · :: netelmä sisältää malmin kasauuttovaiheet, joissa malmi kasauutetaan ensimmäisessä • · · 3 0 vaiheessa käsittelemällä malmi ferrisulfaatilla ja biologisella liuoksella, joka edistää . hapettumista, malmi kasauutetaan toisessa vaiheessa käsittelemällä malmi biologi- * I · . ·' ·, sella liuoksella pH:ssa 1,8 - 3,5, nikkeli erotetaan toisessa vaiheessa saadusta liuok- '! ’ sesta eluaattiliuokseen ja eluaattiliuokselle suoritetaan elektrolyyttinen rikastus nik- : *· kelin talteenottamiseksi.The invention further relates to a process for the production of nickel from a sulfide ore, which process comprises ore extraction steps in which the ore is leached in a first step by treating the ore with ferric sulfate and a biological solution which promotes. oxidation, the ore is piled in a second step by treating the ore with biological * I ·. With this solution at pH 1.8 to 3.5, the nickel is separated from the solution obtained in the second step. The eluate solution and the eluate solution are subjected to electrolytic enrichment to recover the nickel.
3535
Biologinen liuos sisältää suositeltavimmin kussakin vaiheessa kannan TF-FC-1. Keksinnön oleelliset tunnusmerkit on esitetty oheisissa patenttivaatimuksissa.The biological solution preferably contains TF-FC-1 strain at each stage. The essential features of the invention are set forth in the appended claims.
3 1101903, 110190
Keksintöä kuvataan edelleen esimerkillä, jossa viitataan liitteenä olevaan piirustuk-i seen, joka kuvaa lohkopiirustuksena keksinnön mukaisen menetelmän prosessikaa viota.The invention is further illustrated by an example with reference to the accompanying drawing which illustrates, in block diagram form, a process loss of the method according to the invention.
I 5 Liitteenä oleva piirustus kuvaa keksinnön mukaista menetelmää sovellettuna ferro- i nikkelin valmistukseen alhaisen puhtaustason nikkelisulfidimineraaleista.The attached drawing illustrates the process of the invention as applied to the production of ferro-nickel from low purity nickel sulphide minerals.
Menetelmä sisältää seuraavat päävaiheet: kasauuttovaiheiden 10A ja 10B sarjan, ioninvaihto vaiheen 12 ja elektrolyyttisen rikastusvaiheen 14.The process comprises the following main steps: a series of leaching steps 10A and 10B, an ion exchange step 12, and an electrolytic enrichment step 14.
1010
Sulfidimalmi 16, joka on määrä käsitellä, sisältää suuren määrän mineraalipyrrhotiit-tia. Pyrrhotiitin on havaittu reagoivan liuoksena olevan ferrosulfaatin kanssa ja ferrosulfaatti pelkistyy ferrosulfaatiksi: 15 Fe7Sg "f 7Fe2(S04)3 —> 21 FeS04 + 8S.The sulfide ore 16 to be treated contains a large amount of mineral pyrite. Pyrrhotite has been found to react with ferrosulphate in solution and the ferrosulphate is reduced to ferrosulphate: 15 Fe 7 Sg 7 fe 2 (SO 4) 3 → 21 Fe SO 4 + 8 S.
Kasauuttovaihe on tarkoituksenmukaista suorittaa kahdessa vaiheessa 10A ja 10B, vastaavassa järjestyksessä. Ensimmäisessä vaiheessa 10A ferrisulfaattiliuos ohjataan malmikasan läpi pyrrhotiitin pelkistämiseksi. Tämä vaihe saadaan tavallisesti lop-20 puun kahdessa - kymmenessä vuorokaudessa. Tämä vaihe on tärkeä, koska pyrrho-tiitti häiritsee bakteerihapetusta. Ferrisulfaattiliuosta synnytetään jatkuvasti sekoitti-mella varustetussa tankissa, jossa bakteerihapetus muuntaa ferrosulfaatin ferrisulfaa-:: tiksi. Kasasta tuleva liuos, joka sisältää ferrosulfaattia, kierrätetään takaisin tankkiin .v 20.The bulk extraction step is conveniently performed in two steps 10A and 10B, respectively. In the first step 10A, the ferric sulfate solution is passed through an ore pile to reduce pyrrhotite. This step is usually obtained within two to ten days of the final 20 wood. This step is important because the pyrrho tide interferes with bacterial oxidation. The ferric sulfate solution is continuously generated in a tank equipped with a stirrer in which the bacterial oxidation converts the ferrous sulfate to ferric sulfate. The solution from the heap containing ferrous sulphate is recycled to the tank .v 20.
t 25 , Ferrihapetustankin aktiivisuutta edistetään antamalla raudan saostua jarosiittina.t 25, Ferrioxidation tank activity is enhanced by allowing iron to precipitate as jarosite.
i ; : Bakteeripopulaatiota edistetään kiinnittämällä se kiintoaineeseen. Kiintoainesakka ; ’: poistetaan liuoksesta laskeutusaltaassa, ennen kuin se pumpataan kasaan. Kiintoaine palautetaan sekoittimella varustettuun tankkiin.i; A: The bacterial population is promoted by attaching it to a solid. Solids precipitate; ': Removed from solution in a settling basin before being pumped into a heap. The solid is returned to a tank equipped with a stirrer.
i 30 ‘ I t j · ’ Bakteerikanta on TF-FC-1, kuten edellä kuvattiin.The bacterial strain is TF-FC-1 as described above.
I I ► ; Töisessä kasauuttovaiheessa (10B) malmi käsitellään suuresta varastoammeesta 24 t ‘tulevalla liuoksella. Toinen vaihe voi kestää 100 - 300 vuorokautta ja normaalisti : 35 noin 200 vuorokautta, mutta kestoaika riippuu malmin koosta sen murskausasteen , . mukaan. Malmi murskataan sopivasti alle 6 mm:n kokoon, mutta koko vaihtelee malmityypin mukaan.I I ►; In the working bulk extraction step (10B), the ore is treated with a solution from our large warehouse for 24 hours. The second stage can take from 100 to 300 days and normally: 35 to about 200 days, but the duration depends on the size of the ore and its degree of crushing,. by. The ore is suitably crushed to a size of less than 6 mm, but the size varies according to the type of ore.
4 1101904, 110190
Suositeltavinta on antaa liuoksen pH:n toisessa vaiheessa olla noin 3,0, mutta se voisi olla 1,8-3,5. Malmi sisältää tavallisesti happoa kuluttavia aineosia, koska magnesiumia on aina läsnä. Korkea pH vähentää hapon kulutuksen hyvin alhaiselle tasolle. Hapon kulutus voi olla nolla, mikäli happoa muodostuu malmissa olevan ri-5 kin hapettuessa. Huomattavaa on, että bakteerien aktiivisuus on hyvä korkeassa pH:ssa, vaikka liuoksen rautapitoisuus on vähäinen. Bakteerien aktiivisuus toisessa vaiheessa esiintyy pääasiassa malmikasassa. Bakteerikanta on jälleen TF-FC-1. Nämä bakteerit ovat samanlaisia kuin ne, joita käytetään vaikeasti sulavissa kultamal-meissa, joissa rauta, nikkeli ja rikki liukenevat muodostaen nikkelisulfaattia ja rauta-10 sulfaattia liuoksessa.It is preferable to allow the pH of the solution in the second step to be about 3.0, but it could be between 1.8 and 3.5. Ore usually contains acid-consuming ingredients because magnesium is always present. High pH reduces acid consumption to very low levels. The acid consumption can be zero if the acid is formed upon oxidation of the ore r-5. It is noteworthy that the bacterial activity is good at high pH even though the iron content of the solution is low. The bacterial activity in the second stage occurs mainly in the ore pile. The bacterial strain is again TF-FC-1. These bacteria are similar to those used in poorly digestible gold ores, in which iron, nickel and sulfur dissolve to form nickel sulfate and iron 10 sulfate in solution.
Osa liuoksesta 22 otetaan varastoammeesta 24 ja ohjataan ioninvaihtovaiheeseen 12. Nikkeli absorboituu liuoksesta nikkelin suhteen selektiivisen ioninvaihtohartsin vaikutuksesta. Tässä menetelmässä voidaan käyttää useita ioninvaihtohartseja, joita 15 markkinoidaan kelatoivien hartsien yleisessä ryhmässä. Nämä hartsit ovat selektiivi-sempiä nikkelin kuin ferroraudan mutta ei ferriraudan suhteen. Liuoksessa on hyvin vähän rautaa. Kaikki läsnä oleva rauta on ferrorautaa. Ferrisulfaattiin liittyvä ongelma tulee näin laajalti eliminoiduksi ja kelatoivat hartsit erottavat tehokkaasti liuoksessa olevan nikkelin raudasta ja antavat mahdollisuuden nikkelin siirtämiseen kon-20 sentroituna eluaattiliuokseen 30.A portion of solution 22 is taken from storage tank 24 and passed to the ion exchange step 12. Nickel is absorbed from the solution by a selective ion exchange resin with respect to nickel. Several ion exchange resins marketed in the general group of chelating resins can be used in this process. These resins are more selective for nickel than ferric iron but not ferric iron. The solution contains very little iron. All the iron present is ferrous iron. The problem with ferric sulfate is thus largely eliminated and the chelating resins effectively separate the nickel in the solution from the iron and allow the nickel to be concentrated at a concentration in the eluate solution 30.
Liuokselle 30 suoritetaan tunnettu elektrolyyttinen saostusprosessi 14 nikkeli-ja 1.: rautalejeeringin 32 tuottamiseksi. Liuos, jota on merkitty numerolla 34 ja joka jää * Λ: jäljelle elektrolyyttisen rikastuksen jälkeen, sisältää yhä nikkeliä ja se käytetään uu- ,25 delleen lisänikkelin eluoimiseksi ioninvaihtohartsista.Solution 30 is subjected to a known electrolytic precipitation process 14 to produce nickel and 1: iron alloy 32. The solution, designated 34, which remains * jälkeen after electrolytic enrichment, still contains nickel and is used to elute the additional delelion nickel from the ion exchange resin.
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Claims (11)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA9405687 | 1994-08-01 | ||
| ZA945687 | 1994-08-01 |
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| Publication Number | Publication Date |
|---|---|
| FI953488A0 FI953488A0 (en) | 1995-07-19 |
| FI953488A FI953488A (en) | 1996-02-02 |
| FI110190B true FI110190B (en) | 2002-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI953488A FI110190B (en) | 1994-08-01 | 1995-07-19 | Nickel recovery by lump extraction |
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| Country | Link |
|---|---|
| AU (1) | AU689599B2 (en) |
| CA (1) | CA2155050C (en) |
| FI (1) | FI110190B (en) |
| GB (1) | GB2291869B (en) |
| ZA (1) | ZA956205B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5626648A (en) * | 1995-07-17 | 1997-05-06 | Bhp Minerals International Inc. | Recovery of nickel from bioleach solution |
| US6379919B1 (en) | 1999-05-28 | 2002-04-30 | Oxidor Corporation Inc | Method for isolating thiocyanate resistant bacteria |
| US6498031B1 (en) | 1999-05-28 | 2002-12-24 | Oxidor Corporation, Inc. | Column reactor for testing and evaluating refractory ores |
| AUPQ265199A0 (en) | 1999-09-03 | 1999-09-30 | Pacific Ore Technology Limited | Improved bacterial oxidation of sulphide ores and concentrates |
| AU770734B2 (en) * | 1999-09-22 | 2004-03-04 | Billiton S.A. Limited | Copper and nickel recovery |
| CA2353002C (en) | 2001-07-13 | 2009-12-01 | Teck Cominco Metals Ltd. | Heap bioleaching process for the extraction of zinc |
| US7455715B2 (en) | 2001-07-13 | 2008-11-25 | Teck Cominco Metals Ltd. | Heap bioleaching process for the extraction of zinc |
| EA012644B1 (en) * | 2004-09-17 | 2009-12-30 | БиЭйчПи БИЛЛИТОН ЭсЭсЭм ТЕКНОЛОДЖИ ПТИ ЛТД. | Production of ferro-nickel or nickel matte by a combined hydrometallurgical and pyrometallurgical process |
| EP3034635B1 (en) | 2014-12-15 | 2018-10-31 | Middle East Mine and Industry Company | Tank bioleaching of copper sulfide ores |
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| SE468286B (en) * | 1991-06-19 | 1992-12-07 | Boliden Mineral Ab | PROCEDURES FOR THE TREATMENT OF COMPLEX METAL SULPHIDE MATERIAL |
-
1995
- 1995-07-19 FI FI953488A patent/FI110190B/en active
- 1995-07-21 GB GB9514968A patent/GB2291869B/en not_active Expired - Fee Related
- 1995-07-26 ZA ZA956205A patent/ZA956205B/en unknown
- 1995-07-28 AU AU27263/95A patent/AU689599B2/en not_active Ceased
- 1995-07-31 CA CA002155050A patent/CA2155050C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
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| GB2291869B (en) | 1998-05-27 |
| CA2155050A1 (en) | 1996-02-02 |
| GB2291869A (en) | 1996-02-07 |
| AU2726395A (en) | 1996-02-15 |
| GB9514968D0 (en) | 1995-09-20 |
| FI953488A (en) | 1996-02-02 |
| CA2155050C (en) | 2002-10-01 |
| AU689599B2 (en) | 1998-04-02 |
| ZA956205B (en) | 1996-03-13 |
| FI953488A0 (en) | 1995-07-19 |
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