Investigation of the Influence of Ultrafine Grinding and Ultrasonic Field on the Intensification of the Processes of Extraction of Iron Oxides from Ash and Slag Waste of Energy

Autor:	Oleg Danilov, Andrey Taskin, Oleg Elkin
Rok vydání:	2021
Předmět:	Materials science Power station Extraction (chemistry) Metallurgy Iron oxide Magnetic separation Thermal power station Slag Grinding chemistry.chemical_compound chemistry visual_art visual_art.visual_art_medium Particle size
Zdroj:	IOP Conference Series: Earth and Environmental Science. 666:022074
ISSN:	1755-1315 1755-1307
DOI:	10.1088/1755-1315/666/2/022074
Popis:	The possibility of extracting iron oxides from ash and slag wastes of the Primorskaya GRES power plant - (Luchegorsk, Primorsky Kray) was investigated. The positive influence of the energy of ultrasonic vibrations with frequency of 22 kHz and power at1 kW, on the increase in the percentage of extraction of iron from ash and slag waste from thermal power is presented. The optimal time of exposure to ultrasound radiation on ash and slag pulp is determined. A comparison of the magnetic separation of ash and slag waste (ASW) without additional grinding with magnetic separation with preliminary grinding of sample materials down to 90 and 40 microns is carried out. The positive effect of preliminary grinding of the ASW sample on the efficiency of the subsequent magnetic separation is presented. With double magnetic separation of the ASW sample in a magnetic field of 300 T and preliminary crushing of the sample to a particle size class of less than 40 microns, a concentrate was obtained with an iron oxide content of 52.9; the extraction rate of iron oxides equaled 84.2%.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::afc894178f4fe7ca6f2dad2cdae391f0 https://doi.org/10.1088/1755-1315/666/2/022074 Zobrazit plný text záznamu