E3S Web Conf.
Volume 56, 2018VII International Scientific Conference “Problems of Complex Development of Georesources” (PCDG 2018)
|Number of page(s)||5|
|Section||Problems of Complex Processing of Mineral Raw Materials and New Technologies of Mineral Processing|
|Published online||26 September 2018|
Study of promises for the use of ultrasound in the technology of secondary benefication of processing wastes
Mining Institute of Far Easten Branch of Russian Academy of Sciences, Khabarovsk, Russia
* Corresponding author: email@example.com
The results of the study, aimed at designing of benefication technology of mine processing wastes of Voznesenskiy ore district, are presented in this paper. By the expert appraisals, the amount of tailings dumps of the Yaroslavskaya Mining Company is estimated to be more than 30 million tons. Sample testing has shown that fluorite content varies from 13% to 23%, calcite - up to 14%, and zinc - in the range of 0.4-0.6%. The research was conducted with tailing samples containing 20.7% of CaF2 and 10.2% of CaCO3. Mineral grains of the secondary raw material were examined for their surface state and a package of necessary preliminary operations, which provide an efficient material - flotation reagents interaction, was determined. It has been established that extraction of fluorite to concentrates that would match existing requirements is possible in principle. The use of ultrasonic treatment of material in its preparation for flotation is conditioned by an effective desorption of films of different nature from mineral particles. The suggested scheme of fluorite flotation involves preliminary treatment of raw material by ultrasound with dumping of released mud fractions. The optimal operating regime allows obtaining concentrates of higher quality than it is under usual technology without the ultrasonic exposure. In this process, the extraction of fluorite to a concentrate with 94.47% of CaF2 increases up to 61.11%, which is higher by 2.96% against the original studies.
Key words: Mineral mining and processing wastes / Fluorite / Surface formations / Ultrasound / Desorption / Mud fraction / Flotation concentrate
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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