Increasing the Efficiency of Titanium-Iron ORE Enrichment Through Using New Type Separators
Authors: Oliynik Tatiana , Lyashenko Vasyl , Dudar Tamara , Oliynik Maksym 
Published: December 2024

The object of the research is technologies and technical means for selective destruction of mineral matrices of complex multicomponent titanium ores of primary deposits and beneficiation of minerals with altered magnetic properties. The aim of the work is to increase the efficiency of enrichment of titanium-iron ores by preliminary high-temperature treatment using new-type separators. This is achieved by substantiating the targeted selective destruction of mineral complexes and changing the magnetic properties of ore minerals as a result of temperature-controlled oxidation reactions. Methods of complex generalization, analysis and evaluation of practical experience and scientific achievements in the field of creation and introduction of new technologies and technical means for increase of efficiency of enrichment of titanium ores on the basis of separators of new type by substantiation of the directed selective destruction of mineral complexes and change of magnetic properties of ore minerals are described. It was found that for ilmenite, the main titanium component of raw materials, a low mass fraction of titanium is typical - no more than 30.0%, and ilmenite has lamellar-thin nano inclusions of hematite - 31.53 vol. %, which are difficult to remove from the ilmenite matrix. It is proved that in titanium-containing ores selective opening of splices occurs due to recrystallization of grains due to previous reduction, strengthening of bonds in hematiteilmenite contact zones and non-ore inclusions and creation of a network of germinal cracks inside nano splices due to exposure to mineral matrix. C. It is shown that the use of magnetic separation of raw materials after high-temperature treatment reduces the mass fraction of harmful elements such as silicon, aluminum and calcium oxides from 11.89 to 1.2% in the concentrate product and allows to increase the mass fraction of titanium oxide from 32.3 up to 37.6%, and total iron from 33.86 to 42.29%; The technology of complex ore beneficiation has been developed to provide concentrates used for the extraction of titanium slag (mass fraction of titanium oxide - 80-81.84%) and high-purity metallic iron Fe with an average chemical composition of Fe 0.993 Ti 0.006. The results of development and implementation of new generation technologies and separators in the enrichment and processing of titanium ore were obtained in the laboratories of the State Higher Educational Institution (KVUZ) "Kryvyi Rih National University" (Krivoy Rog, Ukraine) and implemented at the Public Joint Stock Company (PJSC) » (Zaporozhye, Ukraine) and the State Institute for the Design of Mining Enterprises SE" Krivbasproekt "(Krivoy Rog, Ukraine). The developed technologies are also the basis for the feasibility study of ore processing technology of the Abu Galaga field (Egypt), in the design of the industrial complex and can be useful for other enterprises in developed mining countries. Research and implementation of new technologies and technical means using dry magnetic separation will allow for the stable production of high-quality concentrates, as well as the reduction of the grinding and enrichment front by at least 15–20% of the original, which will reduce operating and capital costs by more than 30% and will become a powerful technological reserve for the development of mining production.