logo
calendar13 Fevral 2020
view34
Main language:Russian

REGULARITIES OF OXIDATION OF HEPTAUSULPHIDE RHENIUM AT RHENIUM CONCENTRATE PROCESSING

Field of Science:
pdf

5e44d25849683.pdf

PDF

Ўзбекистон кимё журнали

Ўзбекистон кимё журнали

Publish Articlesee more

ARTICLE ANNOTATION

quote
Background. Pyro- and hydrometallurgical methods are used to recover rhenium from secondary raw materials, the choice of the technological scheme of processing is determined by the type of raw materials and the available technological equipment. At the slurry fields of the JSC "Almalyk GMK" there were accumulated man-made wastes containing a scheme for extraction of rhenium from them by hydrothermal sulfidation. Rare metals in the sulphide collective concentrate formed by this method are present in the form of rhenium heptasulfide Re2S7, molybdenum and tungsten three-sulfides. Purpose: to select the technological conditions for achieving the maximum completeness of conversion into the rhenium solution during oxidation of the sulfide phase of the collective rare metal concentrate - the product of hydrothermal sulphidation of tailings solutions of NPO JSC “Almalyk GMK”. Methodology. The object of the study is a sample of a metal sulphide concentrate with a mass of 70.1 kg, composition, g/l: Re 0.056; Mo 0.76; W 0.30; Cu 1.1; Fe 0.40. Measurement of the redox-potential of the solutions was carried out using the potentiometer EV-74. Oxidants – oxygen and sodium nitrite. The sulfidization was carried out with ammonium sulphide. Elemental analysis was fulfilled on ICP-MS. Originality. The behavior of rhenium heptaspulphide in the redox-process is studied. It has been shown that its oxidation in an oxygen-nitrite medium is thermodynamically possible, but there are kinetic limitations caused by the incorporation of unreacted particles of sulphide raw material by elemental sulfur. The regimes of the redox process were selected, which allowed to overcome the inhibiting effect of sulfur, bringing the process speed to the technological level. Findings. The redox potentials of the systems providing rhenium, molybdenum, copper and iron leaching from the sulfide compounds have been measured. Highlights: - behavior of rhenium heptaspulide in redox processes has been studied; - thermodynamic calculation of the oxidation of rhenium heptaspulphide; - rhenium leaching scheme from sulfide concentrate has been tested.

AUTHORS

Tags

# рений# rhenium# сульфид# нитрит натрия# кислород.# натрий нитрити# ulphide# sodium nitrite# oxygen.

OTHER ARTICLES IN THIS JOURNAL

Rate Article

0
0 ratings
5
4
3
2
1

Article Identifiers

ROI:

https://eroi.uz/11.0030/A0220-0024

DOI:

Not Available

References

Naumov, A. V. Ritmyi reniya (Obzor mirovogo ryinka) / A. V. Naumov // Izvestiya vuzov. Cvetnaya metal-lurgiya. - 2007. – Nr.6. - S. 36-41.

Sposob izvlecheniya reniya iz metallicheskih othodov nikel`soderzhas`hih zharoprochnyih splavov: pat. 2412267 Ros. Federaciya: MPK S 22 V 01/00 (2006.01), S 22 V 23/00 (2006.01) / Kasikov A. G., Petrova A. M., Bagrova E. G. i dr.; Zayavitel` i patentoobladatel` IHTRYEMS KNC RAN. - Nr. 2009145364; zayavl. 07.12.2009; opubl. 20.02.2011. Byul. Nr. 5.

A. M. Petrova, A. G. Kasikov, P. B. Gromov, V. T. Kalinnikov. Izvlechenie reniya iz othodov slozhnolegiro-vannyih zharoprochnyih splavov na osnove nikelya // Cvetnyie metallyi. - 2011. - Nr. 11. - S. 39-43.

Guro, V. P., 2012, "Ammonium perrhenate purification and rhenium recovery from heat-resistant rhenium-nickel superalloys". 21st International Conference on Metallurgy and Materials, Brno, Czech Republic, EU.

Lipmann, A. Rhenium 2009 and beyond / A. Lipmann, M. Husakiewicz. - Rezhim dostupa: \ www / lipmann.co.uk 20.05.2010.

Kreyn, O. E. Othodyi rasseyannyih redkih metallov / O. E. Kreyn. - M.: Metallurgiya, 1985. - 104 s. (74-99). - Bibliogr.: S. 101-103.

Kolobov, G. A. Metallurgiya redkih metallov. CHast` 4. Vtorichnyiy reniy: konspekt lekciy / G. A. Kolobov. - Zaporozh`e: ZGIA, 2006. - 27 s. - Bibliogr.: S. 26.

Palant, A. A. Metallurgiya reniya / A. A. Palant, I. D. Troshkina, A. M. CHekmarev. - M.: Nauka, 2007. - 300 s. - Bibliogr.: S. 297-300. - ISBN 5-02-034116-9.

Allabergenov R.D., Ahmedov R.K., Sabirov H.S., SHaripov R.H. Osnovnyie syir`evyie istochniki reniya i puti ego izvlecheniya // Geologiya i mineral`nyie resursyi. - Tashkent: -2010. - Nr. 5. -S.43-48.

S.T.Rasulova, V.P.Guro, R.D.Allabergenov, U.N.Ruziev. Izvlechenie reniya iz hvostohranilis`ha NPO AO "Almalyikskiy GMK" // Uzb. himich. zh. 2018, Nr.3. - S.22-29.

Allabergenov R.D., Sharipov Kh.T., Sharipov R.Kh., Niyazmatov A.A. Possibilities of oxidative lixiviation of rhenium sulphides by low pressures (Reniy: zakonomernosti okislitel`nogo vyis`helachivaniya soley reniya).-7th International Symposium on Technetium and rhenium - Science and Utilization. BOOK OF ABSRACTS. July 4-8, 2011, Moscow, Russia. 120 p.

V.P.Guro, M.A.Ibragimova, S.B.Rasulova, SH.D.SHamsiev. O neytralizacii serovodoroda v poputnyih vodah neftegazopromyislov // Uzb. himich. zh. - 2017, Nr.6. - S.64-69.