Abstract
A new method of reduction of core samples of uranium ore to their natural redox state is described. The results of laboratory experiments on agitated and filtration leaching of uranium from ore reduced by sulfide solution are considered in comparison with leaching of oxidized stored ore. The oxidation of ore samples during sampling and storage leads to the overestimation of the rate of uranium leaching from ore by sulfuric acid solutions. The more oxidized a sample, the higher the overestimation of this parameter in comparison with traditional borehole in situ leaching (ISL) with sulfuric acid. As is proved by determination of U and Fe species in reduced samples, the described technique of ore sample preparation for laboratory experiments enables the natural redox state of ore to be approached. The results of laboratory experiments with samples prepared according to the proposed technique are adequate to the real process of ISL with sulfuric acid at the Dalmatovo uranium deposit.
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References
Analytical Chemistry of Sulfur (Nauka, Moscow, 1975) [in Russian].
J. B. Goddard and D. R. Brosnahan, “Rate of Consumption of Dissolved Oxygen during Ammonium Carbonate in Situ Leaching of Uranium,” Min. Eng. 34(11), 1589–1598 (1982).
Handbook for Uranium Geotechnology, Ed. by D. I. Skorovarov (Energoatomizdat, Moscow, 1997) [in Russian].
Hydrogenic Uranium Deposits, Ed. by A. I. Perelman (Atomizdat, Moscow, 1980) [in Russian].
A. B. Khalezov, The Dalmatovo Uranium Deposit (VIMS, Moscow, 2003) [in Russian].
I. A. Kondrat’eva and M. V. Nesterova, “The Lithogeochemical Features of Uranium Deposits in the Mesozoic River Paleovalleys,” Litol. Polezn. Iskop. 32(6), 577–594 (1997) [Lithol. Miner. Resour. 32 (6), 505–520 (1997)].
Yu. M. Kukushkin, “Results of Pilot Mining of the Dalmatovo Uranium Deposit in 1984–2002,” in In situ and Heap Leaching of Uranium, Gold, and Other Metals (Ruda i Metally, Moscow, 2002), Vol. 1, pp. 193–199 [in Russian].
A. K. Lisitsin, Hydrogeochemistry of Ore Formation (Nedra, Moscow, 1975) [in Russian].
M. F. Maksimova and E. M. Shmariovich, Stratal Infiltration Ore Formation (Nedra, Moscow, 1993) [in Russian].
I. N. Solodov, M. B. Chertok, N. I. Ganina, and L. S. Shulik, “Comparison of the Geochemical Features of the Ore-Bearing Units at Young and Older Hydrogenic Uranium Deposits (Hydrotechnological Aspects),” Geol. Rudn. Mestorozhd. 48(1), 71–85 (2006) [Geol. Ore Deposits 48 (1), 61–73 (2006)].
I. N. Solodov, V. I. Velichkina, M. G. Rubtsov, et al., Hydrochemical Logging: Theory and Practice, Ed. by V. I. Velichkin (Editorial URSS, Moscow, 2005) [in Russian].
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Original Russian Text © I.N. Solodov, M.B. Chertok, 2008, published in Geologiya Rudnykh Mestorozhdenii, 2008, Vol. 50, No. 2, pp. 127–134.
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Solodov, I.N., Chertok, M.B. A technique of reduction of core samples of uranium ore to their natural redox state. Geol. Ore Deposits 50, 112–118 (2008). https://doi.org/10.1134/S1075701508020025
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DOI: https://doi.org/10.1134/S1075701508020025