Physical and Chemical Geotechnologies

Purpose

The research is aimed at improving efficiency of thickening and deslurrying products of iron ore concentration and quality of magnetite concentrate by means of dynamic effects of controlled high-energy ultrasound and the magnetic field impacting ore slurry solids in the output product of the deslimer.

Methodology

The research is based on the systemic approach used to define regularities of high-energy ultrasound propagation in heterogeneous media, develop mathematical and simulating models of these processes and methods of improving thickening and deslurrying of iron ore concentrate by combining impacts of the ultrasonic and magnetic fields.

Findings

The method of controlling magnetic deslurrying of iron ore by combining impacts of ultrasonic and magnetic fields is suggested, this enabling improved efficiency of the magnetic deslimer due to preliminary removal of slurry from ore particle surfaces and disintegration of ore masses that may contain both the useful component and other undesired components. Besides, it enables forecasting ground ore particles’ gravitational deposition through assessing their behaviour under the action of the high-energy ultrasound in the magnetic field as well as controlling these impacts accordingly. Implementation of this approach provides increase of the Fetot mass fraction in concentrate, decrease of its extraction into deslurrying tailings and improvement of qualitative indices of multistage magnetic separation processes throughout the whole technological line of iron ore concentration.

They contain the researches which were conducted within the project 30-111-21 financed by the Ministry of Education and Science of Ukraine.

Keywords: deslimer, simulating modelling, ultrasound

References

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