Abstract: Aiming at the requirements of horizontal and vertical magnetic system performance com ⁃ parison,multi-magnetic induction intensity adjustment and multi-condition test of one machine in flat mag ⁃ netic separation experiment,in order to solve the problems of single function and limited experimental con ⁃ ditions of traditional experimental equipment,a multi-functional flat magnetic separation experimental ma ⁃ chine was developed.The device integrates two kinds of switchable magnetic systems ,horizontal and verti⁃ cal,and has the function of continuous adjustment of magnetic induction intensity (from 0.7 T to 1.0 T), which can realize multi-condition sorting experiment on a single device.The magnetic separation test was carried out with a titanium dioxide tail slag as the experimental object.The results show that under the two magnetic system layouts,when the magnetic induction intensity is 0.7 T and 1.0 T,the TiO2 grade of the concentrate can be more than 40%by one plate magnetic separation.Combined with the analysis of key in ⁃ dicators such as recovery rate,the magnetic induction intensity of 0.7 T with vertical magnetic system is se ⁃ lected,which can significantly reduce the equipment configuration and operation cost under the premise of meeting the separation requirements,and provide technical and economic basis for industrial selection.The development of the experimental machine not only realizes the systematic test and comparative analysis of ore separation performance under multi-magnetic system and multi-field strength conditions ,but also pro⁃ vides an efficient and reliable experimental platform for the optimization of beneficiation process parame ⁃ ters,equipment selection demonstration and separation effect prediction ,which has practical significance for improving the systematic and economic benefits of beneficiation experimental research.

Key words: flat magnetic separation, magnetic configuration, one machine for multiple uses, adjust? able magnetic field