Development of cryptocrystalline graphite desulfurization methods

Описание

Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций

Конференция: International Russian Conference on Materials Science and Metallurgical Technology, RusMetalCon 2019

Год издания: 2020

Идентификатор DOI: 10.4028/www.scientific.net/MSF.989.583

Ключевые слова: Electric-explosive-pulsing activation, Graphite, Mechanical activation, SulfurChemical activation, Desulfurization, Energy utilization, Explosives, Heat transfer, Metallurgy, Sulfur compounds, Activation method, Activation time, Graphite formation, Harmful emissions, Heat energy consumption, Natural graphite, Sulfur contents

Аннотация: Increasing demands on the quality of graphite cause carrying out detailed studies of its desulfurization. Combined sulfur present in natural graphite reduces the heat transfer coefficient, increases the heat energy consumption, pollutes the atmosphere with harmful emissions in the process of their application in various branches ofПоказать полностьюindustry. The technology and deepness of desulfurization is determined by the total content and ratio of various sulfur compounds in graphite. Previously, a number of technologies for cryptocrystalline graphite enrichment had been developed by the authors. However, the use of these technologies does not effectively reduce the sulfur content in the graphite composition. Therefore, the aim of this work is to develop activation methods that can reduce effectively the sulfur content in the composition of cryptocrystalline graphite. In order to reduce the total sulfur content, mechanical and electro-explosive-pulsing activation were tested. Mechanical activation of graphite was carried out in AGO-2, DCM, D-100 activator mills in different environments and at different activation time. To implement electric-explosive-pulsing activation, special equipment was used. In the process of the research it has been found that the use of mechanical activation and electric-explosive-pulsing activation does not reduce the sulfur content below 0.25 wt.%. Mechanical activation of graphite in different modes enables more intensive release of sulfide minerals from aggregate graphite formations and their intensive oxidation.

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Издание

Журнал: Materials Science Forum

Выпуск журнала: vol. 989 MSF

Номера страниц: 583-588

ISSN журнала: 02555476

Издатель: Trans Tech Publications Ltd

Авторы

  • Gilmanshina T.R. (Siberian Federal University, Krasnoyarsk, Russian Federation)
  • Koroleva G.A. (Siberian Federal University, Krasnoyarsk, Russian Federation)
  • Lytkina S.I. (Siberian Federal University, Krasnoyarsk, Russian Federation)
  • Radionov A.A.

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