FLOAT SORTING DEVICE FOR SELECTIVE SEPARATION OF NON-METALLIC MINERALS

摘要

The present disclosure relates to a multi-stage float sorting device, including a first flotator float-sorting ores mixed with water based on a difference in density; and a second flotator provided with a column extending in a top-down direction, one side of which communicates with the first flotator to receive primary concentrates, and float-sorts the primary concentrates based on a difference in density to obtain secondary concentrates. The second flotator includes a washing water jetting section provided at a top of the column to jet washing water; a gas sparger provided at a bottom of the column to jet an inert gas; and an opening and closing section located between the washing water jetting section and the gas sparger to partition an inside of the column into upper and lower regions, and form an opening for rising secondary concentrates in the column according to a pressure state of the lower region.