Agitair浮選機の槽底におけるかくはんに関する研究 (第1報)

抄録

With the object of investigating the motion of pulp and bubbles in the Agitair cell and finding out the correlation between their motion and intensity of agitation at the bottom of the cell, the authors have made experiments on a small batch cell of the Agitair type. The results obtained are as follows:-
1. It was ascertained that the core beneath the impeller was different from those that had been reported in the past literatures.We attemped to reveal the relationship between the intensity of suction force into the core and the various mechanical factors of the cell by means of a formula obtained by introducing a “coefficient of clippage”.
2. It was demonstrated that the impeller had an optimum height to keep the flow of pulp in good condition, and its opimum height decreased with increase of numbers of its slits and its circumferential velocity and, on the other hand, with decrease of specific gravity, size and quantity of particles.
3. Intensity of agitation at the bottom of the cell increases in proportion as the numbers of slit and the circumferential velocity of the impeller increase. It, however, decreases with increases of fhe air quantity introduced in the cell and the height of the impeller from the bottom.
4. In order to make the agitation effective, it is necessary to settle the impeller at such a position as to keep the coefficient of slippage in maximum value.