Schemes of enrichment of ilmenite-titanomagnetite and hematite-magnetite ores

Schemes of enrichment of ilmenite-titanomagnetite and hematite-magnetite ores have been researched. The mineral composition and physical properties of weakly magnetic ore and waste minerals ilmenite-titanomagnetite and hematite-magnetite ores show that the magnetic properties of ilmenite and hematite and most waste minerals do not differ significantly. Therefore, using a single magnetic method, it is difficult to obtain an ilmenite or hematite concentrate. For the enrichment of these types of ores, combined schemes should be used using magnetic, gravitational, electrical or flotation methods of enrichment. To improve the technological parameters of enrichment of ilmenite-titanomagnetite and hematite-magnetite ores, fine screening is also used. Performed laboratory research have shown that the number of enrichment methods used to obtain ilmenite or hematite concentrate depends on the ratio of ore and waste minerals in the ore. When enriching magnetite-hematite ore with a high content of hematite and a low content of weakly magnetic waste minerals, only high-gradient magnetic separation can be used to obtain a hematite concentrate. To obtain ilmenite or hematite concentrate from ilmenite-titanomagnetite and hematite-magnetite ores containing a high amount of weakly magnetic waste minerals, a scheme with two or three enrichment methods should be used. With a low content of a weakly magnetic ore mineral in the initial product and a high amount of weakly magnetic rock minerals, three or four enrichment methods must be used to obtain the concentrate.

Keywords: Ilmenite, hematite, minerals, magnetic separation, gravity separation, electric separation, fine screening, grinding.
For citation:

Pelevin А. Е., Shigaeva V. N., Vodovozov K. A. Schemes of enrichment of ilmenitetitanomagnetite and hematite-magnetite ores. MIAB. Mining Inf. Anal. Bull. 2023;(12-1):106—119. [In Russ]. DOI: 10.25018/0236_1493_2023_121_0_106.

Acknowledgements:
Issue number: 12
Year: 2023
Page number: 106-119
ISBN: 0236-1493
UDK: 622.778
DOI: 10.25018/0236_1493_2023_121_0_106
Article receipt date: 15.05.2023
Date of review receipt: 07.08.2023
Date of the editorial board′s decision on the article′s publishing: 10.11.2023
About authors:

Pelevin A. E., Dr. Sci. (Eng.), Associate Professor, Professor of the Department of Mineral Processing at the Ural State Mining University. Ural State Mining University, 620144, 30, Kuibyshev st., Ekaterinburg, Russia;
Shigaeva V. N., Researcher, JSC «Uralmekhanobr», 620144, 87, Khokhryakova street, Ekaterinburg, Russia;
Vodovozov K. A., Senior lecturer of the Department of Mineral Processing at the Ural State Mining University. Ural State Mining University, 620144, 30, Kuibyshev st., Ekaterinburg, Russia.

 

For contacts:

Pelevin A. E., е-mail: a-pelevin@yandex.ru.

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