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PROCESSING AND COMPLEX USAGE OF MINERAL RAW MATERIALS
ArticleName Expansion of the magnesium resource base by introducing oxide-bearing ore in heat-power engineering and nano-manufacturing
ArticleAuthor Krylov I. O., Yushina T. I., Epikhin A. N., Strokov A. A.
ArticleAuthorData

Author 1:
Name & Surname: Krylov I. O.
Company: Mining Institute of National University of Science and Technology MISiS (Moscow, Russia)
Work Position: Assistant Professor
Scientific Degree: Candidate of Engineering Sciences
Contacts: e-mail: vims-kio@mail.ru


Author 2:
Name & Surname: Yushina T. I.
Company: Mining Institute of National University of Science and Technology MISiS (Moscow, Russia)
Work Position: Head of department
Scientific Degree: Candidate of Engineering Sciences


Author 3:
Name & Surname: Epikhin A. N.
Company: All-Russian Research Thermal Engineering Institute (Moscow, Russia)
Work Position: Head of laboratory
Scientific Degree: Candidate of Engineering Sciences


Author 4:
Name & Surname: Strokov A. A.
Company: All-Russian Research Thermal Engineering Institute (Moscow, Russia)
Work Position: Researcher
Scientific Degree: Candidate of Engineering Sciences

Abstract

Under discussion is a scenario of developing one of manganese deposits that are assumed economically ineffective in Russia if manganese ore dressing uses conventional processing charts to obtain metals, ferrous alloys or manganese compounds. The reason is low content of manganese and low dressability of such ore. Oxide-type ores are easy-to-dress but they only make 17% in the total ore reserves. This research shows that manganese ores can be fruitfully used in new promising charts in heat-power engineering in the capacity of high-temperature absorbing medium for hydrogen sulfide in gasifier-combined cycle plants for production of pure generator gas or synthesis gas for gas turbines, with reduced toxic emission. The best results to this effect are obtained using manganese ore with dominating content of braunite. Grey manganese ore changes composition of synthesis gas and decreases its chemical heat but, according to the research, enables manufacturing carbon nanotubes with a wide range of parameters. Considering high cost of replaceable synthetic high-temperature absorbants and manufactured nanotubes, development of manganese ore deposits becomes economic. In this case, manganese ore cost grows 3–4 times as against selling price but remains an order of magnitude lower than the replaceable analogs. The use of manganese ore in heat-power engineering and carbon nanotubes manufacture improves the ore quality in the oxidation–reduction process. The used-up ore goes to metallurgy, for ferromanganese production, and to other industries. The research findings justify the potential of profitable manganese ore extraction of up to 4 Mt annually for heat-power engineering and show an opportunity to manufacture up to 1 Mt of carbon nanotubes per year.

The research is carried out in the framework of the program “Prosecution of Research (Scientific Investigation, Applied Scientific Investigation and Experimental Development),” Assignment No. 2014/97.

keywords Manganese ore, coal gasification, synthesis gas, high-temperature hydrogen sulfide absorbant, carbon nanotubes, nanotechnologies
References

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