E3S Web Conf.
Volume 192, 2020VIII International Scientific Conference “Problems of Complex Development of Georesources” (PCDG 2020)
|Number of page(s)||5|
|Section||Problems of Complex Processing of Mineral Raw Materials and New Technologies of Mineral Processing|
|Published online||30 September 2020|
Intensification of humic acid extraction from lignites
Mining Institute of the North named after N.V. Chersky, SB RAS, Yakutsk, 677018, Russian Federation
* Corresponding author: email@example.com
One of the methods of initial properties of solid fuels changing by their organic mass oxidation is considered in the paper. Creation of innovative ways of intensification of existing solid fuels processing and their adoption by industry has always been and remains an actual task. Thus the chemical process is the most important stage of raw materials processing into target products. Chemical exposure allows to optimize the technological mode, expanding the scope of control of technological process parameters and, to a certain extent, modify the properties of the resulting products. The article presents the results of experimental research of influence of preliminary oxidation on the lignite organic mass from Kharanorsk and Kangalas deposits by different chemical reagents to determine a degree of this process impact on the efficiency of their processing into humic substances. Inorganic and organic oxidizers of different concentrations were used as reagents. The greatest effect for increasing the humic acids yield was observed when using 6-10 % hydrogen peroxide for oxidation, and 10 % hydrochloric acid. The results of experiments on the coal preoxidation effect can be used as a basis for the development of a new method of lignites processing into humic substances.
Key words: oxidation / solid fossil fuels / lignite / processing / organic acids / inorganic acids / humic substances / humic acids yield
© The Authors, published by EDP Sciences, 2020
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