The Fluidized Macro Meso Mechanism of Iron Concentrate Ore in Bulk

Abstract:

The experiments of shaking table tests were carried out in order to study the evolution and mechanism during the fluidization of iron concentrate ore in bulk. And with the use of digital image capture and processing technology, the laws concerning the displacement field, moisture migration and movement of particles during the fluidization were analyzed. As a result of these two types of experiments, both macro and meso mechanism of the fluidization of iron concentrate ore were revealed. The results show that it is the dynamic loading that leads to the fluidization of iron concentrate ore. Due to the dynamic loading, the fine particles move downward through the spaces between coarse particles. At the same time, the water on the surface of particle moves down and becomes water film which flows upwards. Meanwhile, it provides the theoretical basis for the further studies concerning preventive measures for the fluidization of iron concentrate ore.

Key words:iron concentrate ore; fluidization; model testing; macro meso mechanism