Working Principle of the Laboratory Continuous Flotation Cell

The laboratory continuous flotation cell  typically features a modular design, with two cells forming one basic operational unit. The cell volumes are available in a wide range and can be customized according to specific experimental requirements, with single-cell capacities ranging from 1.5 L to 48 L. Its core agitation system combines mechanical stirring with self-aspiration air intake. When the impeller rotates at high speed, a strong negative pressure zone forms between the impeller and the stator. This unique structure not only draws pulp from the bottom but also simultaneously aspirates air, ensuring thorough gas-liquid mixing.

In operation, fresh pulp is fed into the leftmost cell of the unit. Driven by the strong suction force of the impeller, the pulp overcomes resistance and flows smoothly from left to right through each cell, enabling continuous processing. Meanwhile, concentrate foam scraped from each cell is directed via dedicated foam troughs back to the upstream flotation units on the left side for re-cleaning. This “forward pulp flow, reverse foam recirculation” design effectively enhances concentrate grade.

Thanks to these structural features, the flotation unit offers exceptional flexibility. Users can freely expand the number of flotation units based on actual process requirements, easily constructing complete flotation circuits including roughing, scavenging, and cleaning stages.

The greatest advantage of this flotation unit lies in its “continuity.” It simulates industrial conditions of continuous feeding and continuous discharge, overcoming the limitations of traditional single-cell flotation machines that operate intermittently. As a result, it more accurately reflects mineral separation performance under dynamic conditions, providing highly valuable data for designing and optimizing large-scale mineral processing plants.