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ISSN 2076-2429 (print) , 2014. . 1(43) ISSN 2223-3814 (on line) .. , , 669.213.6 .. ϳ, - . , ...

ISSN 2076-2429 (print)

, 2014. . 1(43)

ISSN 2223-3814 (on line)

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669.213.6

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E = 0,53 + 0,059log[Au(CN) 2 ] 0,118log([CN ] 2[Au(CN) 2 ]) + 0,118log(4,93 10 + [H ]), [CN ] -, .

- (11) , . AuCN22 (. 2).

ϳ (6) - , 䳿 , - 㳿 ó - (5)(6)/(11). . 3.

, AuO3+

   

, 㳿 ó - (5)(6)/(11) =9,30 =11,63 [H+], . 㳿 ó . =9,30 , - . , , , .

. . , () . 1014 㳿 ó (G=2050 /) =9,30, - ; (G=1950 /) =11,63, - . , , 䳿 , 11,6.

1. Wadsworth, M.E. Gold dissolution and activation in cyanide solution: kinetics and mechanism / M.E. Wadsworth, X. Zhu, J.S. Thompson, C.J. Pereira // Hydrometallurgy. 2000. Vol. 57, 1. P. 111.

2. Marsden, J. The Chemistry of the Extraction of Gold / J. Marsden, I. House. 2nd ed. Society for Mining, Metallurgy, and Exploration, 2006. 682 p.

3. , .. / .. , .. // . 2012. 5. . 60 63.

4. , .. / .. , .. ϳ // ϲ. 2013. 1. . 129134.

5. Senanayake, G. Kinetics and reaction mechanism of gold cyanidation: Surface reaction model via Au(I)OHCN complexes / G. Senanayake // Hydrometallurgy. 2005. Vol. 80, 12. P. 1 12.

References

1. Wadsworth, M.E. Gold dissolution and activation in cyanide solution: kinetics and mechanism / M.E. Wadsworth, X. Zhu, J.S. Thompson, C.J. Pereira // Hydrometallurgy. 2000. Vol. 57, # 1. pp. 1 11.

2. Marsden, J. The Chemistry of the Extraction of Gold / J. Marsden, I. House. 2nd ed. Society for Mining, Metallurgy, and Exploration, 2006. 682 p.

3. Pivovarov, A.A. Issledovanie effektivnosti primeneniya plazmokhimicheskikh aktivirovannykh rastvorov pri vyshchelachivanii blagorodnykh metallov iz rudnykh kontsentratov [The study of application efficiency of plasma chemically activated solutions when leaching precious metals from ore concentrates] / A.A. Pivovarov, M.I. Vorobyeva // metallurgicheskaya i gornorudnaya promyshlennost [Metallurgical and Metal Mining Industry]. 2012. #5. pp. 60 63.

4. Vorobiova, M.I. Rozchynennia sribla v plazmokhimichno aktyvovanykh rozchynakh [Dissolution of silver in plasma-chemically activated solutions] / M.I. Vorobiova, O.A. Pivovarov // Naukovi visti NTUU KPI[Scientific News of NTUU KPI]. 2013. #1. pp. 129 134.

5. Senanayake, G. Kinetics and reaction mechanism of gold cyanidation: Surface reaction model via Au(I)OHCN complexes / G. Senanayake // Hydrometallurgy. 2005. Vol. 80, # 12. pp. 1 12.

ֲ / / ABSTRACT

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140 .


. , , , 䳿 . 㳿 ó - =9,30 (G=2050 /) =11,63 (G=1950 /).

: , , , .

.. , .. , .. . , .

. , . , , , . - =9,30 (G=2050 /) =11,63 (G=1950 /).

: , , , - .

M.I.Vorobyov, A.A.Pivovarov, V.I.Vorobyova. The thermodynamic analysis of chemical transformations in dissolving gold in the cyanic solutions made on the basis of plasma-chemically treated water.Usage of traditional techniques of extracting gold by cyanidation is accompanied by increased costs for certain manufacturing operations. The paper is devoted to the thermodynamic analysis of gold dissolution in cyanide solutions made on the basis of plasmochemically activated water. It is established that value affects the process of gold dissolution by the cyanide solutions prepared with the use of water treated by the contact nonequilibrium low-temperature plasma. Gibbs energy change for a pair of redox reactions in the system under study has the form of a function with a pronounced minimum at =9,30 (G=2050 kJ/mol), and an excess at =11,63 (G=1950 kJ/mol).

Keywords: contact nonequilibrium low-temperature plasma, cyanide solutions, gold, oxidation-reduction/redox potential.

   

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