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I already have a diagram where I can show the process, but i do not know how to attach it.
I have this problem since I started this job, we had problems of water, then reactives, and so on.
We add milk of lime to the SAG mill (automatic valve). The discharge goes to a common sump for BALL and SAg mills discharge. We add to this sump ZnSO4. A pump sends the fluid to the cyclone, overflow goes to the sump2, underflow goes to the Ball mill( to the ball mill we add NaCN). From sump 2 we send the fluid to the unit cell where we add MIBC, then the fluid goes to the conditioner where we add CYTEX, MIBC, NaCN, Xanthate, and at this point we do the measurement of pH.
I hope you will understand my problem, it is a non-linear loop (control) because i have dead time between the automatic valve and the measurement point. the equipment is new, because recently I changed the pH electrodes.
I tried to read the pH in the sump 1, but it did not work because after that the pH is changing.
I think that may be a cascade control would fix my problem but i am not sure. I need some help in this, so if you could help me.
Or may be modelating (maths) the process ( really difficult i think) and working with the model.
Thanks.
I have this problem since I started this job, we had problems of water, then reactives, and so on.
We add milk of lime to the SAG mill (automatic valve). The discharge goes to a common sump for BALL and SAg mills discharge. We add to this sump ZnSO4. A pump sends the fluid to the cyclone, overflow goes to the sump2, underflow goes to the Ball mill( to the ball mill we add NaCN). From sump 2 we send the fluid to the unit cell where we add MIBC, then the fluid goes to the conditioner where we add CYTEX, MIBC, NaCN, Xanthate, and at this point we do the measurement of pH.
I hope you will understand my problem, it is a non-linear loop (control) because i have dead time between the automatic valve and the measurement point. the equipment is new, because recently I changed the pH electrodes.
I tried to read the pH in the sump 1, but it did not work because after that the pH is changing.
I think that may be a cascade control would fix my problem but i am not sure. I need some help in this, so if you could help me.
Or may be modelating (maths) the process ( really difficult i think) and working with the model.
Thanks.