Журналы →  Tsvetnye Metally →  2013 →  №6 →  Назад

HYDROMETALLURGY
Название Improvement of physical and mechanic characteristics of cathode copper
Автор Kozlov S. L., Yudin E. V., Yurev A. I., Salimzhanova E. V., Shulga E. V.
Информация об авторе

“Norilsk Nickel” MMC, Moscow, Russia

S. L. Kozlov, Head of Department of Administration of Operational Production Control, phone: +7 (495) 797-82-17

 

Polar Division of “Norilsk Nickel” MMC, Norilsk, Russia

E. V. Yudin, Chief Engineer of Control and Analytical Department
A. I. Yurev, Executive Officer (Center of Engineering Maintenance of Production)
E. V. Salimzhanova, Deputy Executive Officer (Center of Engineering Maintenance of Production)
E. V. Shulga, Chief Specialist (Center of Engineering Maintenance of Production)

Реферат

Researches of dependence of spiral elongation from the samples manufacturing technology were carried out within the definition of reasons of high value of SEN index of cathode copper of Polar Division of “Norilsk Nickel” MMC. Estimation of interconnection of sampling point with the SEN size was carried out for the purpose of improvement of sampling methodology, which provides the presentability of analytical sample. There was substantiated, that sulphur is rather uniformly distributed on cathode part. At the same time, nickel and silver are concentrated in side and bottom part, which is explained by starting of electrolyte and particles of slag into the surface defects. Experiment for searching of dendrite crystallization centers showed the inclusions of cuprites and elemental-organic compounds in the places of their formation. This issue requires the additional consideration. It was substantiated that, to a variable degree, separate impurities increase the temperature of copper recrystallization. According to this, these impurities decrease the values of SEN. Recrystallization temperature is increased by phosphorous, selenium, tellurium and tin, which have the most significant influence. Iron, cobalt, nickel and silver have the less influence. Carrying out of measures for decreasing of the content of impurities in copper cathodes and continuing of works for optimization of colloid regime of copper electrolyte, is required for the purpose of further maintenance of reached indices SEN > 400 mm and their stabilization.

Ключевые слова Cathode, copper, coefficient of spiral elongation, dendrite formation, surface-active substances, recrystallization, content, impurities
Библиографический список

1. Leuprecht G. Spiral elongation number and AR-value of copper rod in correlation to cathode quality. ISA process users conference. Hitachi (Japan), 2004.
2. GOST 859–2001. Med. Marki (State Standard 859–2001. Copper. Grades). Introduced: March 01, 2002. Moscow : Publishing House of Standards, 2008.
3. Schmidt J., Jackson J. Rekristallizatsiya v mednoy katanke (Recrystallization of copper wire rod). Cu-2007. Proceedings of the 6 International Conference. Toronto, Ontario (Canada), 2007.
4. GOST 546–2001. Katody mednye. Tekhnicheskie uslovia (State Standard 546–2001. Copper cathodes. Specifications). Introduced: March 01, 2002. Moscow : Publishing House of Standards, 2007.
5. Levin A. I. Elektrokhimiya tsvetnykh metallov (Electrochemistry of non-ferrous metals). Moscow : Metallurgiya, 1982.
6. Ostanin N. I. Issledovanie mekhanizmov snizheniya soderzhaniya primesey v katodnom osadke medi (Research of mechanisms of decreasing of a content of impurities in cathodic sediment of copper). Ekaterinburg : Ural State Technical University — Ural Polytechnical Institute, 2000. 65 p.
7. Rotinyan A. L., Tikhonov K. I., Shoshina I. A. Teoreticheskaya elektrokhimiya (Theoretical electrochemistry). Under the editorship of A. L. Rotinyan. Leningrad : Khimiya, 1981. 424 p.
8. Mubarok Z., Filzwieser I., Paschen P. Dendritic Cathode Growth during Copper Electrorefining in the Presence of Solid Particles. Erzmetall. 2005. Vol. 58, No. 6. p. 315.

9. Antropov L. I., Popov S. Ya. Zhurnal Prikladnoy Khimii — Russian Journal of Applied Chemistry. 1954. Vol. XXVII, No. 1. pp. 55–63.
10. GOST 28515–97. Med. Metod ispytania prob na udlinenie spirali (State Standard 28515–97. Copper. Method of test for sample spiral elongation). Introduced: July 01, 1998. Moscow : Publishing House of Standards, 2005.

Language of full-text русский
Полный текст статьи Получить
Назад