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ENVIRONMENTAL PROTECTION TECHNICS AND TECHNOLOGY
ArticleName Assessment of ecological safety of flotation reagents in the process of hematite ores concentration
ArticleAuthor Yurlova N. A., Kayfadzhyan E. N., Shumskaya E. N., Poperechnikova O. Yu.
ArticleAuthorData

Author 1:
Name & Surname: Yurlova N. A.
Company: RIVS-Proekt LLC (Saint-Petersburg, Russia)
Work Position: Main specialist
Scientific Degree: Doctor of Biological Sciences
Contacts: e-mail: rivsproject@rivs.ru


Author 2:
Name & Surname: Kaifadzhyan E. A.
Company: Mendeleev Institute for Metrology (Saint-Petersburg, Russia)
Work Position: Senior Researcher
Scientific Degree: Candidate of Engineering Sciences


Author 3:
Name & Surname: Shumskaya E. N.
Company: RIVS Science and Production Association (Saint-Petersburg, Russia)
Work Position: Principal Researcher
Scientific Degree: Candidate of Engineering Sciences
Contacts: e-mail: rivs@rivs.ru


Author 4:
Name & Surname: Poperechnikova O. Yu.
Company: RIVS Science and Production Association (Saint-Petersburg, Russia)
Work Position: Head of Production Research Subdivision

Abstract

RIVS Science and Production Association carries out a wide range of work aimed at improvement of iron ore dressing technology and equipment. The scope of work embraces flotation of magnetite concentrates toward their quality refinement and production of superconcentrates, and development of efficient technology for oxidized ferruginous quartzite dressing. Concentration of hematite ore uses cation amine-containing surface active agents (AC SAA). It is required to control the remaining content of highly toxic and ecologically hazardous AC SAA. Concentration of flotation agents was measured using the spectrophotometric method (simple, inexpensive but less selective) and the selective method of gas–liquid partition chromatography based on certified procedures. The industrial environmental monitoring advises to use the selective methods to estimate concentration of flotation agents, including calculation of effluents treated to standard quality. The article shows that desorption of AC SAA can run in pulp slurry, which results in higher concentration of AC SAA in the recycling water. However, in the course of time, AC SAA undergo chemical transformation and their content in the recycling water and liquid phase of tailings reduces. The process of AC SAA decomposition intensifies under higher temperature.

keywords Hematite ore, flotation, amine-containing surface active agents, flotation agents, spectrophotometric method, gas–liquid partition chromatography method
References

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3. Metodika vypolneniya izmereniy soderzhaniya flotoreagenta v vodnoy srede metodom gazozhidkostnoy khromatografii (GZhKh) M-MVI-206-08, utverzhdennaya Obshchestvom s Ogranichennoy Otvetstvennosyu «Monitoring» (Procedure of measurements of content of flotation reagent in aqueous medium by gas-liquid chromatography method M-MVI-206-08 (М-МВИ-206-08), approved by LLC “Monitoring”). Saint Petersburg, 2008. 18 p. (in Russian).
4. Metodika vypolneniya izmereniy soderzhaniya flotoreagenta v tverdoy faze metodom gazozhidkostnoy khromatografii M-MVI-207-08, utverzhdennaya Obshchestvom s Ogranichennoy Otvetstvennosyu «Monitoring» (Procedure of measurements of content of flotation reagent in solid phase by gas-liquid chromatography method M-MVI-207-08 (М-МВИ-207-08), approved by LLC “Monitoring”). Saint Petersburg, 2008. 19 p. (in Russian).
5. Yurlova N. A. Ekologicheskie aspekty pri proektirovanii obektov i predpriyatiy gorno-dobyvayushchego kompleksa (Ecological aspects in the time of designing of objects and enterprises of mining complex). Gornyi Zhurnal = Mining Journal. 2010. No. 10. pp. 101–104.

Full content Assessment of ecological safety of flotation reagents in the process of hematite ores concentration
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