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Date submitted2022-04-14
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Date accepted2022-07-21
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Date published2022-11-03
In-situ leaching of molybdenum and uranium by percarbonate and chloride-hypochlorite solutions
In-situ leaching of molybdenum and uranium is becoming an increasingly common process. The features of the material composition of ores, leading to a decrease in their filtration properties, were considered. Activation leaching with leaching solutions that have undergone electrophotochemical activation before contact with the ore mass were studied. Activation preparation of leaching solutions promotes the synthesis of clustered water molecules with collectivized protons and hydroxyl ions, as well as active forms of oxygen and hydrogen. Cell leaching of molybdenum from mature tailings of the Shakhtaminsk deposit was studied experimentally. After pre-oxidation with an active carbonate solution, a model borehole leaching was carried out with a chloride-hypochlorite solution. Molybdenum extraction on resin a was 85 % in 30 days. Experiments on the percolation leaching of uranium from the ores of the Uchkuduk and Sugraly deposits confirmed the potential possibility of a significant increase in the extraction of uranium by electrophotoactivated percarbonate solutions relative to aqueous solutions of sodium and ammonium carbonate. When leaching with carbonate solutions without an additional oxidizing agent, the extraction of uranium from the Sugraly deposit ore sample was 52 and 59 % (sodium carbonate and ammonium carbonate). The use of hydrogen peroxide as an oxidizing agent made it possible to achieve 87-88 % extraction into pregnant solutions in 21 days without pre-oxidation. The performed studies confirm the processing capability of extracting uranium and molybdenum by percolation leaching in columns and borehole leaching.
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Date submitted1954-07-11
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Date accepted1954-09-11
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Date published1955-11-17
Извлечение молибдена из бедных концентратов и промпродуктов
Первые работы по гидрометаллургии молибдена были начаты Ленинградским горным институтом в 1932 г. и осуществлялись на бедном сырье Тахтарвумчоррского месторождения, чрезвычайно далеком от обычных кондиций. В течение двух последующих лет результаты этих работ были обсуждены и одобрены на проводившихся академиком А. Е. Ферсманом широких совещаниях в г. Кировске и Ленинграде, но практическое использование получили позднее, в связи с проблемой извлечения молибдена, содержащегося в балхашских медных рудах. В октябре 1941 г. на Балхашском заводе был введен в эксплуатацию цех, предназначенный для передела некондиционных молибденовых продуктов методом, разработанным в Ленинградском горном институте.
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Date submitted1952-07-03
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Date accepted1952-09-05
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Date published1953-01-01
On the age of the Shakhtaminsky granitoids and the connection with mineralization
- Authors:
- N. V. Zuev
The author conducted research in the area of a large molybdenite deposit in Eastern Transbaikalia, explored mainly during the years of the Great Patriotic War. The Shakhtama deposit is located in the Chita region, Shakhtama district, at the head of the Shakhtama River of the same name. The studied area extends in a latitudinal direction as a strip, the length of which is 100 km, the width is about 8 km. Within the specified area, the author conducted prospecting and survey work and compiled a geological map (1: 50,000). The data provided for the Shakhtama district allow us to shed new light on the age relationships of rocks and issues of mineralization distribution.