EA202000309A1 - METHOD FOR AUTOCLAVE PROCESSING OF CARBONY GOLD-CONTAINING CONCENTRATES USING ADDITIONAL OXIDIZING REAGENT - Google Patents

METHOD FOR AUTOCLAVE PROCESSING OF CARBONY GOLD-CONTAINING CONCENTRATES USING ADDITIONAL OXIDIZING REAGENT

Info

Publication number
EA202000309A1
EA202000309A1 EA202000309A EA202000309A EA202000309A1 EA 202000309 A1 EA202000309 A1 EA 202000309A1 EA 202000309 A EA202000309 A EA 202000309A EA 202000309 A EA202000309 A EA 202000309A EA 202000309 A1 EA202000309 A1 EA 202000309A1
Authority
EA
Eurasian Patent Office
Prior art keywords
gold
nitric acid
autoclave
increase
salts
Prior art date
Application number
EA202000309A
Other languages
Russian (ru)
Inventor
Даниил Валерьевич Гордеев
Илья Владимирович Фоменко
Яков Михайлович Шнеерсон
Original Assignee
Общество с ограниченной ответственностью "Научно-исследовательский центр "Гидрометаллургия"
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Общество с ограниченной ответственностью "Научно-исследовательский центр "Гидрометаллургия" filed Critical Общество с ограниченной ответственностью "Научно-исследовательский центр "Гидрометаллургия"
Publication of EA202000309A1 publication Critical patent/EA202000309A1/en

Links

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
    • C22B11/00—Obtaining noble metals
    • C22B11/08—Obtaining noble metals by cyaniding
    • 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
    • C22B11/00—Obtaining noble metals
    • 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
    • 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
    • C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

Изобретение относится к металлургии цветных металлов, в частности к переработке упорных золотосодержащих концентратов. В предлагаемом способе для повышения скорости и полноты окисления органического углерода и повышения извлечения золота предлагается вводить в автоклав азотную кислоту или ее соли. Эффективность способа максимальна, если азотную кислоту или ее соли вводить в пульпу после практически полного окисления сульфидов. Это позволяет минимизировать расход азотной кислоты или её соли, а также максимально повысить окислительно-восстановительный потенциал пульпы и, тем самым, увеличить скорость и полноту окисления органического углерода и, как следствие, извлечение золота на последующих операциях. Азотная кислота может подаваться в автоклав в виде крепкого (68%) или в виде разбавленных растворов, а нитратные соли - в виде водных растворов с концентрацией от 100 до 400 г/л. Продолжительность азотнокислой обработки может составлять от 10 до 60 мин и зависит от температуры автоклавного процесса.The invention relates to metallurgy of non-ferrous metals, in particular to the processing of refractory gold-containing concentrates. In the proposed method, in order to increase the rate and completeness of the oxidation of organic carbon and increase the extraction of gold, it is proposed to introduce nitric acid or its salts into the autoclave. The efficiency of the method is maximum if nitric acid or its salts are introduced into the pulp after almost complete oxidation of sulfides. This allows you to minimize the consumption of nitric acid or its salt, as well as to maximize the redox potential of the pulp and, thereby, to increase the rate and completeness of the oxidation of organic carbon and, as a consequence, the extraction of gold in subsequent operations. Nitric acid can be supplied to the autoclave in the form of strong (68%) or in the form of dilute solutions, and nitrate salts - in the form of aqueous solutions with a concentration of 100 to 400 g / l. The duration of nitric acid treatment can be from 10 to 60 minutes and depends on the temperature of the autoclave process.

EA202000309A 2019-11-01 2020-08-26 METHOD FOR AUTOCLAVE PROCESSING OF CARBONY GOLD-CONTAINING CONCENTRATES USING ADDITIONAL OXIDIZING REAGENT EA202000309A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2019135246A RU2732819C1 (en) 2019-11-01 2019-11-01 Method for autoclave processing of carbonaceous gold-containing concentrates using additional oxidant reagent

Publications (1)

Publication Number Publication Date
EA202000309A1 true EA202000309A1 (en) 2021-05-31

Family

ID=72922427

Family Applications (1)

Application Number Title Priority Date Filing Date
EA202000309A EA202000309A1 (en) 2019-11-01 2020-08-26 METHOD FOR AUTOCLAVE PROCESSING OF CARBONY GOLD-CONTAINING CONCENTRATES USING ADDITIONAL OXIDIZING REAGENT

Country Status (2)

Country Link
EA (1) EA202000309A1 (en)
RU (1) RU2732819C1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5262136A (en) * 1989-04-28 1993-11-16 Cra Services Limited Recovery of gold and silver from complex refractory sulphide ores by cyanidisation and oxidation with peroxides
AU627577B2 (en) * 1989-04-28 1992-08-27 Cra Services Limited Recovery of gold and silver from complex refractory sulphide ores by cyanidisation and oxidation with peroxides
US5425800A (en) * 1993-10-26 1995-06-20 Fmc Corporation Recovery of precious metal values from refractory ores
RU2502814C2 (en) * 2012-02-24 2013-12-27 Общество с ограниченной ответственностью "Управляющая компания Ариэнт" Combined method of heap leaching of gold from refractory sulphide ores
RU2514900C2 (en) * 2012-07-04 2014-05-10 Общество с ограниченной ответственностью "Научно-иследовательский центр "Гидрометаллургия" Processing of gold-bearing concentrates of two-fold hardness

Also Published As

Publication number Publication date
RU2732819C1 (en) 2020-09-22

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