Because of the solid particles are moving behaved like a fluid. The speed with which this fluid-like condition called Minimum Fluidization Velocity and range from bed Fluidized bed with this move.
The solid particles from the cell to behave like a fluid. The speed of onset of conditions like fluid called Minimum Fluidization Velocity and run the bed began to move this Fluidized bed.
Because the solid particles will behave like the movement of fluid. Point at the start speed have a fluid called Minimum Fluidization Velocity and call the bed start with this move. Fluidized bed .