EA201800596A1 - URANIUM UNDERGROUND LEACHING METHOD - Google Patents

URANIUM UNDERGROUND LEACHING METHOD

Info

Publication number
EA201800596A1
EA201800596A1 EA201800596A EA201800596A EA201800596A1 EA 201800596 A1 EA201800596 A1 EA 201800596A1 EA 201800596 A EA201800596 A EA 201800596A EA 201800596 A EA201800596 A EA 201800596A EA 201800596 A1 EA201800596 A1 EA 201800596A1
Authority
EA
Eurasian Patent Office
Prior art keywords
leaching
uranium
sodium nitrite
underground
oxidation
Prior art date
Application number
EA201800596A
Other languages
Russian (ru)
Other versions
EA036364B1 (en
Inventor
Марат Абенович Ниетбаев
Серик Аблакасович Дюсамбаев
Михаил Юрьевич Лексин
Турар Берикович Елемесов
Алексей Михайлович Лексин
Нуридин Даукенович Мырзакулов
Калый Калымбаевич Нурманов
Original Assignee
Акционерное Общество "Национальная Атомная Компания "Казатомпром"
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 Акционерное Общество "Национальная Атомная Компания "Казатомпром" filed Critical Акционерное Общество "Национальная Атомная Компания "Казатомпром"
Publication of EA201800596A1 publication Critical patent/EA201800596A1/en
Publication of EA036364B1 publication Critical patent/EA036364B1/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
    • 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
    • C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
    • C22B3/08—Sulfuric acid, other sulfurated acids or salts thereof
    • 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
    • C22B60/00—Obtaining metals of atomic number 87 or higher, i.e. radioactive metals
    • C22B60/02—Obtaining thorium, uranium, or other actinides

Landscapes

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

Abstract

Изобретение относится к технологии подземного выщелачивания металлов из пористых руд или песков глубоких россыпей на месте их залегания и может быть использовано при отработке месторождений способом подземного выщелачивания. Задачей изобретения является повышение эффективности выщелачивания урана и уменьшение расхода реагента окислителя. Техническим результатом изобретения является более полное окисление Feза счет добавления озона, благодаря которому происходит его доокисление и последующее восстановление нитрита натрия, который затем повторно вовлекается в процесс окисления Fe, что в свою очередь приводит к уменьшению его расхода и повышению эффективности процесса выщелачивания урана. Технический результат достигается тем, что способ подземного выщелачивания урана включает приготовление выщелачивающего раствора с доукреплением его серной кислотой и вводом нитрита натрия. Согласно изобретению в выщелачивающий раствор подают озон в количестве 2,38-7,14% от количества находящегося в нем нитрита натрия.The invention relates to a technology for underground leaching of metals from porous ores or sands of deep placers at their location and can be used in the development of deposits by the underground leaching method. The objective of the invention is to improve the efficiency of uranium leaching and reduce the consumption of the oxidizing agent. The technical result of the invention is a more complete oxidation of Fe due to the addition of ozone, due to which its additional oxidation and subsequent reduction of sodium nitrite occurs, which is then re-involved in the oxidation of Fe, which in turn leads to a decrease in its consumption and an increase in the efficiency of the uranium leaching process. The technical result is achieved by the fact that the method of underground leaching of uranium includes the preparation of a leaching solution with its additional strengthening with sulfuric acid and the introduction of sodium nitrite. According to the invention, ozone is fed into the leach solution in an amount of 2.38-7.14% of the amount of sodium nitrite in it.

EA201800596A 2018-10-03 2018-10-29 Method for underground uranium leaching EA036364B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KZ20180694 2018-10-03

Publications (2)

Publication Number Publication Date
EA201800596A1 true EA201800596A1 (en) 2020-04-30
EA036364B1 EA036364B1 (en) 2020-10-30

Family

ID=70483854

Family Applications (1)

Application Number Title Priority Date Filing Date
EA201800596A EA036364B1 (en) 2018-10-03 2018-10-29 Method for underground uranium leaching

Country Status (1)

Country Link
EA (1) EA036364B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115612869A (en) * 2022-09-27 2023-01-17 核工业北京化工冶金研究院 Secondary enhanced leaching method for neutral in-situ leaching uranium mine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPM414594A0 (en) * 1994-02-25 1994-03-24 Commonwealth Industrial Gases Limited, The A process for extraction of uranium
RU2172792C1 (en) * 2000-03-21 2001-08-27 Всероссийский научно-исследовательский институт химической технологии Method of extraction of uranium from ores
RU2326177C1 (en) * 2006-08-14 2008-06-10 Российская Федерация, от имени которой выступает Государственный заказчик - Федеральное агентство по атомной энергии Method of uranium recovery from ores
RU2572910C2 (en) * 2013-12-03 2016-01-20 Зао "Далур" Leaching uranium from ores
CA2967622A1 (en) * 2016-10-19 2018-04-19 Amec Foster Wheeler Americas Limited Process for in-situ leaching of high-grade uranium deposits

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115612869A (en) * 2022-09-27 2023-01-17 核工业北京化工冶金研究院 Secondary enhanced leaching method for neutral in-situ leaching uranium mine
CN115612869B (en) * 2022-09-27 2024-02-13 核工业北京化工冶金研究院 Neutral in-situ uranium ore mountain secondary intensified leaching method

Also Published As

Publication number Publication date
EA036364B1 (en) 2020-10-30

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