Abstract
Actuality of studies on development of new, economically effective technologies of concentration is stipulated by expanding involvement of hard-concentrated and poor by Fe content ores while continuously increasing requirements to the quality of concentrates, obtained of them.An ecologically clean technology of iron ores concentration developed by application of electro-magnetic waves of SHF range, which enabled to intensify the concentration and processing processes, suitable for Lisakovsk deposit ores. Influence of heating by SHF radiation on magnetic properties of Lisakovsk ore concentrate studied.It was determined, that existence of magnetic properties in roasted materials enable to applicate a magnetic separation for concentration and estimate the quality of obtained concentrates, heated in SHF furnaces, depending on magnetic fraction yield. Optimal coarseness of roasted concentrate crushing determined, suitable for further concentration.Comprising of concentration technologies of hydro-goethite ores carried out: deep concentration and concentration by application of SHF heating. Distinctive feature of concentration technologies by SHF heating considered.Advantages of concentration technology of Lisakovsk ores by SHF energy application considered, the main being a possibility of rich low-silicon concentrates allocation, which can be used for complex processing of Lisakovsk ores. A sequence developed, including their separate agglomeration, BF smelting for phosphorous-vanadium hot metal and helenite slag obtaining, suitable for production of alumina and cement as a raw material.
Highlights
Actuality of studies on development of new, economically effective technologies of concentration is stipulated by expanding involvement of hard-concentrated and poor by Fe content ores while continuously increasing requirements to the quality of concentrates, obtained of them
An ecologically clean technology of iron ores concentration developed by application of electro-magnetic waves of SHF range, which enabled to intensify the concentration and processing processes, suitable for Lisakovsk deposit ores
That existence of magnetic properties in roasted materials enable to applicate a magnetic separation for concentration and estimate the quality of obtained concentrates, heated in SHF furnaces, depending on magnetic fraction yield
Summary
Изучено влияние нагрева в поле СВЧ на магнитные свойства концентрата лисаковской руды. Целью данной работы является разработка новой, экологически чистой технологии обогаще ния железных руд с использованием энергии сверхвысоких частот (СВЧ), которая в качестве примера реализована при обогащении лисаков ских гидрогетитовых руд. Для изучения процессов при нагреве лиса ковских руд и продуктов частичного обогащения использовали пробу руды текущей добычи, из которой получили грубый концентрат, подвергну тый воздействию СВЧ-полей. Для обработки материалов в поле СВЧ ис пользовали ячейки 2. Схема установки для обработки материалов в поле СВЧ:. Схема уста новки для обработки материалов в поле СВЧ представлена на рис. 3. Изменение поглощаемой мощности (1) и температуры (2) в процессе нагрева влажного лисаковского концентрата в поле СВЧ в зависимости от продолжительности термообработки. ТЕМПЕРАТУРНО-ВРЕМЕННЫЕ ПАРАМЕТРЫ ОБРАБОТКИ В ПОЛЕ СВЧ ГРУБОГО ЛИСАКОВСКОГО КОНЦЕНТРАТА И СВОЙСТВА ПРОГРЕТОГО МАТЕРИАЛА*
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