DE284741C - - Google Patents
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- Publication number
- DE284741C DE284741C DENDAT284741D DE284741DA DE284741C DE 284741 C DE284741 C DE 284741C DE NDAT284741 D DENDAT284741 D DE NDAT284741D DE 284741D A DE284741D A DE 284741DA DE 284741 C DE284741 C DE 284741C
- Authority
- DE
- Germany
- Prior art keywords
- nitric acid
- ores
- copper
- nitrates
- nitrate
- 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
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- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 25
- GRYLNZFGIOXLOG-UHFFFAOYSA-N nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 21
- 229910052813 nitrogen oxide Inorganic materials 0.000 claims description 9
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N Calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 8
- YIXJRHPUWRPCBB-UHFFFAOYSA-N Magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 claims description 7
- 238000002386 leaching Methods 0.000 claims description 7
- 150000002823 nitrates Chemical class 0.000 claims description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate dianion Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 4
- XTVVROIMIGLXTD-UHFFFAOYSA-N Copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 claims description 4
- 238000000354 decomposition reaction Methods 0.000 claims description 4
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 3
- 239000005751 Copper oxide Substances 0.000 claims description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 2
- 229910000431 copper oxide Inorganic materials 0.000 claims description 2
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 239000010949 copper Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 9
- 229910052802 copper Inorganic materials 0.000 description 9
- 229910052742 iron Inorganic materials 0.000 description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 6
- 238000001354 calcination Methods 0.000 description 4
- GEZOTWYUIKXWOA-UHFFFAOYSA-L copper;carbonate Chemical class [Cu+2].[O-]C([O-])=O GEZOTWYUIKXWOA-UHFFFAOYSA-L 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 235000015450 Tilia cordata Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 229910000460 iron oxide Inorganic materials 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000011133 lead Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- JLDSOYXADOWAKB-UHFFFAOYSA-N Aluminium nitrate Chemical class [Al+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O JLDSOYXADOWAKB-UHFFFAOYSA-N 0.000 description 1
- 241001140714 Citrus latifolia Species 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L Copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K Iron(III) chloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- RUTXIHLAWFEWGM-UHFFFAOYSA-H Iron(III) 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 1
- XCAUINMIESBTBL-UHFFFAOYSA-N Lead(II) sulfide Chemical compound [Pb]=S XCAUINMIESBTBL-UHFFFAOYSA-N 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- LITYQKYYGUGQLY-UHFFFAOYSA-N [Fe].O[N+]([O-])=O Chemical compound [Fe].O[N+]([O-])=O LITYQKYYGUGQLY-UHFFFAOYSA-N 0.000 description 1
- QPPSCXPWECCHRD-UHFFFAOYSA-N [N+](=O)([O-])[O-].[Cu+2].[Fe+2].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-] Chemical compound [N+](=O)([O-])[O-].[Cu+2].[Fe+2].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-] QPPSCXPWECCHRD-UHFFFAOYSA-N 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 239000011260 aqueous acid Substances 0.000 description 1
- 235000011132 calcium sulphate Nutrition 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- FDNDTQWNRFFYPE-UHFFFAOYSA-N carbonic acid;nitric acid Chemical compound OC(O)=O.O[N+]([O-])=O FDNDTQWNRFFYPE-UHFFFAOYSA-N 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 229940116318 copper carbonate Drugs 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 229940032950 ferric sulfate Drugs 0.000 description 1
- 229910052949 galena Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- CSNNHWWHGAXBCP-UHFFFAOYSA-L mgso4 Chemical class [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N nitrous oxide Inorganic materials [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- WGPCGCOKHWGKJJ-UHFFFAOYSA-N sulfanylidenezinc Chemical compound [Zn]=S WGPCGCOKHWGKJJ-UHFFFAOYSA-N 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 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
- C22B15/00—Obtaining copper
- C22B15/0063—Hydrometallurgy
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
- Kk 284741 KLASSE 40«. GRUPPE- Kk 284741 CLASS 40 «. GROUP
HERMANN BÜELER de FLORIN in ZÜRICH.HERMANN BÜELER de FLORIN in ZURICH.
Verfahren zur Behandlung von Erzen mit Salpetersäure.Method of treating ores with nitric acid.
Patentiert im Deutschen Reiche vom 22. Oktober 1912 ab.Patented in the German Empire on October 22, 1912.
Die Erfindung betrifft ein Verfahren zur Behandlung von Erzen, und zwar kommen für dasselbe karbonatische Erze, ζ. B. kalk- und magnesiahaltige Kupferkarbonate und oxydische Erze in Frage.The invention relates to a method for Treatment of ores, namely, come for the same carbonate ores, ζ. B. lime and magnesia-containing copper carbonates and oxide ores in question.
Derartige Ausgangsmaterialien hat man bisher mit Schwefelsäure, Ferrisulfat, Salzsäure und Eisenchlorid gelaugt. Ein derartiges Verfahren ist überall da anzuwenden, wo es sichSuch starting materials have hitherto been used with sulfuric acid, ferric sulfate, hydrochloric acid and ferric chloride leached. Such a procedure can be used wherever it is
ίο um kieselsäurereiche kalk- und magnesiaarme Erze handelt. Dagegen kommt bei kalk- und magnesiareichen Ausgangsmaterialien die Laugung mit den genannten Mitteln wegen des großen, zur Neutralisation der Erdalkalikarbonate erforderlichen Überschusses und wegen des geringen Wertes der Kalzium- und Magnesiumsulfate bzw. -chloride wohl weniger in Betracht.ίο low in silica and low in magnesia Ores trades. On the other hand, leaching occurs in the case of raw materials rich in lime and magnesia with the means mentioned because of the large, to neutralize the alkaline earth carbonates necessary excess and because of the low value of calcium and magnesium sulfates or chlorides probably less of a consideration.
Das Verfahren nach vorliegender Erfindung besteht in einer Salpetersäurelaugung. Der Vorteil desselben beruht darauf, daß die zur Laugung von Kupfer u. dgl. erforderlichen Säuremengen beinahe quantitativ zprückgewonnen werden können, und daß wertvolle Nebenprodukte, Kalzium- und Magnesiumnitrat, bei demselben resultieren, die sich auch zur Rückgewinnung von Salpetersäure eignen. Es können bei dem Verfahren der Erfindung auch Gase mit niedrigem Stickoxydgehalt, wie sie bei der Stickstoffoxydation nach elektrothermischen Verfahren und mit Sauerstoff erhalten werden, direkt· zum Laugen von Erzen Verwendung finden.The method of the present invention consists of nitric acid leaching. Of the The advantage of this is based on the fact that those required for leaching copper and the like Acid amounts can be recovered almost quantitatively, and that valuable By-products, calcium and magnesium nitrate, result in the same, which are also suitable for the recovery of nitric acid. It can be used in the method of the invention also gases with a low nitrogen oxide content, such as those in nitrogen oxidation after electrothermal ones Process and with oxygen can be obtained directly · for leaching of ores Find use.
Man hat bereits vorgeschlagen, Erze mit Salpetersäure auszulaugen, doch hat es sich hierbei um die Behandlung sulfidischer Erze gehandelt, während nach der Erfindung, wie erwähnt, karbonatische und oxydische Erze verarbeitet werden sollen.It has already been proposed to leach out ores with nitric acid, but it has proven itself this concerned the treatment of sulfidic ores, while according to the invention, such as mentions that carbonate and oxide ores are to be processed.
Bei den bekannten Verfahren handelt es sich um Bleierze, bei dem beanspruchten Verfahren um Kupfererze.The known processes are lead ores, in the claimed process about copper ores.
Man wußte jedenfalls vorher noch nicht, daß es möglich ist, mittels Salpetersäure karbonatische und oxydische Erze in Gegenwart großer Eisen- oder Kalkmengen mit Erfolg auszulaugen.In any case, it was not known beforehand that it was possible to use carbonate nitric acid and oxide ores in the presence of large amounts of iron or lime with success leach out.
In Ausführung des Verfahrens kann man wie folgt vorgehen:In carrying out the procedure, one can proceed as follows:
Das auf wenigstens 5 mm zerkleinerte Erz wird in Laugegefäßen entweder mit verdünnter Salpetersäure (7 bis 12 Prozent), mit Wasser und Stickoxydgasen oder mit verdünnter Salpetersäure und Stickoxydgasen behandelt. Die dekantierte oder filtrierte Lauge, welche neben Kupfernitrat auch andere lösliche Nitrate, wie Zink-, Blei-, Silber-, Eisen-, Aluminium-, Kalzium-, Magnesiumnitrat enthalten kann, läßt ' sich z. B. nach den fünf folgenden Arten weiter verarbeiten:The ore, which has been crushed to at least 5 mm, is either diluted in caustic vessels Nitric acid (7 to 12 percent), with water and nitrogen oxide gases or with dilute nitric acid and nitrogen oxide gases. The decanted or filtered liquor, which besides Copper nitrate also other soluble nitrates, such as zinc, lead, silver, iron, aluminum, calcium, May contain magnesium nitrate, can 'z. B. continue in the following five ways to process:
I. Die Nitratlauge wird eingedampft, wobei schon bald ein beträchtlicher Teil des Eisens ausfällt und sich beseitigen läßt. Durch längeres Erhitzen bei 300 ° werden Kupfer-, noch gelöstes Eisen- und Aluminiumnitrat zersetzt, während Kalzium- und Magnesiumnitrat unverändert bleiben und aus der trockenen Masse mit Wasser ausgelaugt werden. Der nachI. The nitrate liquor is evaporated, with soon a considerable part of the iron fails and can be eliminated. By prolonged heating at 300 ° copper, still dissolved Iron and aluminum nitrates decompose, while calcium and magnesium nitrates remain unchanged remain and are leached from the dry mass with water. The after
dieser Wasserlaugung verbleibende Rückstand, welcher alles Kupfer als Oxyd neben Eisen-, Aluminium- und anderen Oxyden enthält, eignet sich zum reduzierenden Verschmelzen auf metallisches Kupfer oder zur Darstellung von Kupfersulfat.this water leaching residue, which contains all copper as oxide in addition to iron, Contains aluminum and other oxides, is suitable for reducing fusing on metallic copper or to represent copper sulfate.
2. Die eingedampfte Nitratlauge wird längere Zeit über 500 ° erhitzt, so daß alle Nitrate, auch diejenigen der Erdalkalimetalle, zersetzt werden. -Der Kalzinationsrückstand läßt sich wie unter 1. durch reduzierendes Schmelzen, z. B. im elektrischen Ofen, auf metallisches Kupfer verhütten.2. The evaporated nitrate liquor is heated over 500 ° for a long time so that all nitrates, including those of the alkaline earth metals, are decomposed. - The calcination residue can be removed as under 1. by reducing melting, z. B. in an electric furnace, smelt on metallic copper.
3. Wenn einer Hütte kupferfreie, sulfidische Erze, ζ. B. Zinkblende oder Bleiglanz, neben schwefelfreien, kalkreichen, karbonatischen Kupfererzen zur Verfügung stehen, lassen sich die von den Röstöfen abziehenden schwefeldioxydhaltigen Gase in an sich bekannter Weise thermisch ausnutzen zum Eindampfen und Kalzinieren der Kupfernitratlauge oder aber auch gleichzeitig zu einer teilweisen Zersetzung der Lauge, bevor letztere zur Trockene eingedampft ist, so daß gewisse, in der Lauge enthaltene Metalle, wie z. B. Kalzium, Blei oder Silber, vor der Kalzination als Sulfate ausgeschieden werden können.3. If a smelter has copper-free, sulfidic ores, ζ. B. zinc blende or galena, besides Sulfur-free, lime-rich, carbonate copper ores are available, can be the sulfur dioxide-containing gases withdrawn from the roasting ovens in per se known Thermally exploit way to evaporate and calcine the copper nitrate liquor or but also at the same time to a partial decomposition of the lye before the latter to dryness is evaporated, so that certain metals contained in the lye, such as. B. Calcium, lead or silver, which can be excreted as sulfates before calcination.
4. Aus der Nitratlauge läßt sich das Kupfer auch mit Eisen niederschlagen, wobei als Nebenprodukt Eisennitrat entsteht, welches durch Eindampfen und Kalzinieren in verkäufliches Eisenoxyd und nitrose Dämpfe zerfällt.4. The copper can also be precipitated from the nitrate liquor with iron, whereby as a by-product Iron nitrate is formed, which by evaporation and calcination breaks down into salable iron oxide and nitrous vapors.
Beiläufig sei erwähnt, daß auch salpetersaures Eisen ein Handelsprodukt und deshalb dessen Zersetzung nicht unumgänglich notwendig ist.Incidentally, it should be mentioned that iron nitric acid is also a commercial product and therefore whose decomposition is not absolutely necessary.
5. Bei Innehaltung gewisser Vorsichtsmaßregeln kann Kupfernitrat nicht nur der Zementation, sondern auch der Elektrolyse unterworfen werden, wobei metallisches Kupfer und wäßrige Salpetersäure entsteht.5. If certain precautionary measures are observed, copper nitrate can not only be used for cementation, but also be subjected to electrolysis, with metallic copper and aqueous nitric acid being formed.
Die nachfolgende Übersicht illustriert die einzelnen hier angeführten Verfahren. Es liefert:The following overview illustrates the individual procedures listed here. It delivers:
Rückstand Eindampfen KalzinationResidue evaporation calcination
Arbeitsweise 1 Kupferoxyd Stickoxyde KalksalpeterWorking method 1 copper oxide, nitrogen oxide, calcium nitrate
» 2 » » Stickoxyde»2» »Nitrogen oxides
» 4 Zementkupfer Eisennitrat oder Eisenoxyd und»4 cement copper iron nitrate or iron oxide and
Stickoxyde » 5 Elektrolytkupfer und wäßrige Salpetersäure.Nitrogen oxides »5 electrolytic copper and aqueous nitric acid.
Die zurückgewonnene Salpetersäure wird als Stickoxydgas (1, 2, 3 und 4) oder als wäßrige Säure (5) wieder zur Laugung neuer Erzmengen verwendet.The recovered nitric acid is used as nitrogen oxide gas (1, 2, 3 and 4) or as aqueous Acid (5) reused to leach new quantities of ore.
Das hier beschriebene Verfahren der Laugung karbonatischer Kupfererze mit Salpetersäure ist nicht identisch mit einem vor einiger Zeit bekanntgegebenen Verfahren zur Behandlung von. Erzen mit konzentrierter Salpetersäure unter Druck nach Ranklin-Westling, nach welchem Erze mit konzentrierter Salpetersäure unter Druck behandelt werden.The process described here for leaching carbonate copper ores with nitric acid is not the same as a treatment method announced some time ago from. Ores with concentrated nitric acid under pressure according to Ranklin-Westling, according to which ores are treated with concentrated nitric acid under pressure.
Nach diesem Verfahren werden sulfidische Erze, beispielsweise Bleisulfid, mit Salpetersäure nicht ausgelaugt, sondern, wie erwähnt, unter Verwendung konzentrierter Salpetersäure unter Druck umgesetzt im Sinne folgender Gleichung:According to this process, sulphidic ores, for example lead sulphide, are not mixed with nitric acid leached, but, as mentioned, using concentrated nitric acid under Pressure implemented in the sense of the following equation:
3PbS + 8HNO3 = 3PbSO4 + 4H2O +8NO.1)3PbS + 8HNO 3 = 3PbSO 4 + 4H 2 O + 8NO. 1 )
Nach dem Verfahren der vorliegenden Erfindung werden karbonatische Erze (Kupferkarbonat) mit verdünnter Säure ausgelaugt; die Reaktion verläuft etwa im Sinne der nachfolgenden Gleichung:According to the method of the present invention, carbonate ores (copper carbonate) leached with dilute acid; the reaction proceeds roughly in the sense of the following Equation:
CuCO3 + 2 H NO3 = Cu (NO3)2 + H2 O + CO2.CuCO 3 + 2 H NO 3 = Cu (NO 3 ) 2 + H 2 O + CO 2 .
1J Die Rückgewinnung geschieht hier bei der Behandlung des Erzes mit Säure. 1 J The recovery takes place here when the ore is treated with acid.
Die Rückgewinnung der Salpetersäure erfolgt nach der Behandlung des Erzes mit derselben. The nitric acid is recovered after the ore has been treated with the same.
Zweck und Arbeitsweise beider Verfahren sind, wie aus dieser Gegenüberstellung zu entnehmen ist, gänzlich verschieden.The purpose and mode of operation of both procedures can be seen in this comparison is completely different.
Claims (4)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE284741C true DE284741C (en) | 1900-01-01 |
Family
ID=540183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT284741D Expired DE284741C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE284741C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2320990A1 (en) * | 1975-08-11 | 1977-03-11 | Coffer Lynn | MINERAL TREATMENT PROCESS FOR THE EXTRACTION OF METALS |
-
0
- DE DENDAT284741D patent/DE284741C/de not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2320990A1 (en) * | 1975-08-11 | 1977-03-11 | Coffer Lynn | MINERAL TREATMENT PROCESS FOR THE EXTRACTION OF METALS |
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