US961924A - Process for refining gold. - Google Patents

Process for refining gold. Download PDF

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Publication number
US961924A
US961924A US48247609A US1909482476A US961924A US 961924 A US961924 A US 961924A US 48247609 A US48247609 A US 48247609A US 1909482476 A US1909482476 A US 1909482476A US 961924 A US961924 A US 961924A
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US
United States
Prior art keywords
gold
current
direct current
silver
anode
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 - Lifetime
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US48247609A
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English (en)
Inventor
Heinrich Wohlwill
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aurubis AG
Original Assignee
Norddeutsche Affinerie AG
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Filing date
Publication date
Application filed by Norddeutsche Affinerie AG filed Critical Norddeutsche Affinerie AG
Priority to US48247609A priority Critical patent/US961924A/en
Application granted granted Critical
Publication of US961924A publication Critical patent/US961924A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00Electrolytic production of inorganic compounds or non-metals
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S204/00Chemistry: electrical and wave energy
    • Y10S204/09Wave forms

Definitions

  • Patented J 11119 Applieation flled March 10,1909. Serial in. 82,476.
  • Asymmetrical currents are produced either i by commuting a direct current at small and unequal intervals of time, as for example, alternately every 1/50 and 3/50 seconds, or such currents may be produced by the simultaneous use of a direct current and an alternatin' current connected in parallel. I prefer owever, to produce the asymmetrical current ina still difl'erent way, to wit by connecting a source of direct current and a source of alternating current 1n series.
  • the process can be used for the refining of gold still richer in silver; in fact, the use of the asymmetrical current in accordance with the present process permits of the purification of .all classes of gold which are encountered in actual practice.
  • I current corresponding to from I In the electrolytic treatment of gold in" U accordance w'th the old process ereinbefore-referred to, the 'heating-ofthe bath is I a J1250*+1315 as5s 7o absolutely essential, as the direct current ,ampemgmo the 'uare meter, 1 :thisbwse; when alone?
  • m coldl f the Volta e of the direct current component though b l reqmslte denslty of is about from 1 to 1.1 volts per bath and the mntffoo i 9 Square meter, ⁇ total voltage per'cell as indicatedfon a hot current component is not allowed to exceed ⁇ not more than l0 per cent, greater, is ad- P du preclpitatimn fZ' Q gold wire oltam'eter, is about 1.4 volts.
  • the gold my a cold sohmon the use of volts as the maximum voltage of the direct etricalcurrentswhoseirect com o- V as mm P current, and 1 as 'the maxlmum voltage of -20 nenthas a density below 1000 amperes to'thethe alternating current p bath.
  • the streng hs and Voltage of the currents bath and the direct ailment dynamo 1S employed may vary-widely accordin to the excited unt1l a polarized-direct current am characterof the n to b fin d g If th '30 meter inserted mthe circuit, indicates the 01d contains than 8 e t 6 v desired strength of the direct current.
  • P Gen thedensityiof' the direct current component can be advantageously increased, or, if preferred, the strength of the alternating component relative to'the direct current com'ponent can be diminished.
  • the ratio of the strength of t e alternating. current to I that of the directicurrent cannot be advan tageously diminished below a certain limit. For instance, if the strength of the alternating current becomes less than .707 of that of the direct current combined current will cease to be an alternating current' and wi become a mere undulatory direct current of eriodically varying strength, in which case, the peculiar advantages of-the combined Icurv rent hereinbefore set forth, are lost.
  • gold is in the proportion of from L ⁇ to 2 per cent. ,being treated, which contains about 10 per of the solution, or the treatment can take cent. of silver, a density of the direct current place with a cold solution in which case 7 12! component of about 1250 amperes to the per cent.
  • I may substithis desired strength of the direct current is represented by i and if it is desired to work with' a virtual intensity of the alternating 35 current represented by 6,, the Virtual inten- 4 sity of Y the total current obtained y the combined use of the two currents',can be calculated according to the formula i a/i 01,.
US48247609A 1909-03-10 1909-03-10 Process for refining gold. Expired - Lifetime US961924A (en)

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US48247609A US961924A (en) 1909-03-10 1909-03-10 Process for refining gold.

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2548867A (en) * 1945-04-14 1951-04-17 Poor & Co Electroplating metals
US3192146A (en) * 1959-06-17 1965-06-29 Diffusion De Procedes Et Breve Equipment for purification and sterilization of swimming pool waters
US3192142A (en) * 1959-06-16 1965-06-29 Diffusion De Procedes Et Breve Process and device for preparing drinking water from insalubrious crude water
US3335078A (en) * 1963-05-16 1967-08-08 Edward L Hendey Bipolar cell for electrolytically treating water
US3340175A (en) * 1965-08-26 1967-09-05 Paul B Barnett Apparatus for fluid treatment
US3518174A (en) * 1967-08-10 1970-06-30 Inoue K Method and apparatus for purification of water containing organic contaminants
US4775452A (en) * 1985-04-25 1988-10-04 Chlorine Engineers Corp. Ltd. Process for dissolution and recovery of noble metals
US11319613B2 (en) 2020-08-18 2022-05-03 Enviro Metals, LLC Metal refinement

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2548867A (en) * 1945-04-14 1951-04-17 Poor & Co Electroplating metals
US3192142A (en) * 1959-06-16 1965-06-29 Diffusion De Procedes Et Breve Process and device for preparing drinking water from insalubrious crude water
US3192146A (en) * 1959-06-17 1965-06-29 Diffusion De Procedes Et Breve Equipment for purification and sterilization of swimming pool waters
US3335078A (en) * 1963-05-16 1967-08-08 Edward L Hendey Bipolar cell for electrolytically treating water
US3340175A (en) * 1965-08-26 1967-09-05 Paul B Barnett Apparatus for fluid treatment
US3518174A (en) * 1967-08-10 1970-06-30 Inoue K Method and apparatus for purification of water containing organic contaminants
US4775452A (en) * 1985-04-25 1988-10-04 Chlorine Engineers Corp. Ltd. Process for dissolution and recovery of noble metals
US11319613B2 (en) 2020-08-18 2022-05-03 Enviro Metals, LLC Metal refinement
US11578386B2 (en) 2020-08-18 2023-02-14 Enviro Metals, LLC Metal refinement

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