| 摘要 |
PURPOSE:To reinforce the stabilization of a process and to reduce unit reagent consumption, by calculating a necessary amount of sodium cyanide in order to recover a proper froth level and supplying sodium cyanide to a flotation tank in the calculated predetermined amount by a reagent adding pump. CONSTITUTION:If the present froth level exists between an upper limit level and a lower limit level, it is judged that a flotation state is well and the correction of the addition amount of sodium cyanide is not performed and the present addition amount is kept. If the present froth level exceeds the upper limit froth level, the correction of the increase in the addition amount of sodium cyanide is performed according to a predetermined formula. When said present froth level is the lower limit level or less, the correction of the reduction in the addition amount of sodium cyanide is performed according to a predetermined formula. After correction, the corrected addition amount is kept for several min as the setting time of a froth level.
|
