Promising Technology for Reprocessing Complex Uranium Ores from the Elkon Deposit

Smirnov, K. M.; Molchanova, T. V.; Anan’ev, A. V.; Akimova, I. D.; Ovcharenko, E.; Krylova, O. K.

doi:10.1007/s10512-017-0282-4

Cited by 2 publications

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“…The aim of γspectroscopy measurements is determining of characteristics of radiation source and its substations surrounding which can be determined when γ-spectrum processed. The tasks of applied γ-spectrometry include, for example, measurement of native radioactive elements content in substance [2,3], investigation of radioactive environmental pollution for their danger evaluation [4 -7], measurement of planet radioactivity [8] and others.…”

Section: Introductionmentioning

confidence: 99%

APPROXIMATION OF PEAKS IN Γ-Spectra BY GAUSSIAN-LIKE ANALYTIC FUNCTIONS

Berezhnoy¹

2021

Problems of Atomic Science and Technology

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The program processing γ-spectra named “GAMMAPEAKS”, was elaborated. This program can approximate peaks in γ-spectra with different Gaussian-like functions. The common Gaussian, the variable variance Gaussian and the sectionally defined Gaussian-like function were used as approximative functions. The contrastive analysis of quality of peaks approximating using no more than three approximative functions for one extremum in γ-spectra was performed. The quantitative and qualitative data determining the precision of approximating of γ-spectra peaks by different Gaussian-like functions are shown.

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Section: Introductionmentioning

confidence: 99%

APPROXIMATION OF PEAKS IN Γ-Spectra BY GAUSSIAN-LIKE ANALYTIC FUNCTIONS

Berezhnoy¹

2021

Problems of Atomic Science and Technology

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Element behavior during autoclave oxidation of polymetallic sulfide flotation concentrate containing tungsten and molybdenum

Epiforov,

Balikov,

Shipnigov

2024

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In this paper, we investigate the behavior of associated elements (tungsten, molybdenum, and bismuth) contained in a sulfide gold-bearing concentrate during its autoclave oxidation. The process is studied using a sulfide flotation concentrate, crushed to a particle sieve mesh size of minus 0.045 mm and containing 22.1 g/t of gold, 133.2 g/t of silver, 2.7% of tungsten, 13% of molybdenum, and 0.7% of bismuth. The process was carried out in a 2 dm3 autoclave at a temperature of 220ºC and an oxygen partial pressure of 0.7 MPa. The concentrations of sulfuric acid and iron ions in the solution were determined by titrimetric analysis. Inductively coupled plasma atomic emission spectroscopy was used to determine the concentrations of bismuth, tungsten, molybdenum, copper, silver, and arsenic in the solution, as well as the content of bismuth, tungsten, molybdenum, copper, arsenic, lead, and iron and sulfur forms in the cake. The cake was also examined using diffraction analysis. Experiments on cyanidation of oxidized cake were carried out in the pH range of 10.0–10.5 and a NaCN concentration of 1 g/dm3 with a PuroliteS992 ion exchange resin for 24 h. Autoclave oxidation experiments showed the sulfide oxidation degree to be higher than 99%. Extraction of molybdenum into solution in the form of [MoO2(SO4)n]-(2n-2) and MoO 2+ amounted to 95%. The decrease in the solid mass led to an increase in the concentration of bismuth and tungsten in the cake, with their contents reaching 1.66% and 12.7%, respectively. The main phases in the cake were established to be scheelite, anhydrite, plumboyarosite, and bedantite. The extraction of precious metals at the subsequent cyanidation stage amounted to 97.5% of gold and 91.6% of silver. Therefore, autoclave cyanide processing of sulfide gold-containing concentrates leads to a molybdenum extraction in the autoclave oxidation solution at the level of 95%. During cyanidation, more than 90% of gold and silver are extracted. Due to the significant amount of tungsten (17%), bismuth (0.9%), lead (5.3%), and molybdenum (3.3%), the obtained cake cannot be considered a waste product.

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Promising Technology for Reprocessing Complex Uranium Ores from the Elkon Deposit

Cited by 2 publications

References 0 publications

APPROXIMATION OF PEAKS IN Γ-Spectra BY GAUSSIAN-LIKE ANALYTIC FUNCTIONS

APPROXIMATION OF PEAKS IN Γ-Spectra BY GAUSSIAN-LIKE ANALYTIC FUNCTIONS

Element behavior during autoclave oxidation of polymetallic sulfide flotation concentrate containing tungsten and molybdenum

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