The experimental identification of the liquor preheating process that links the plant complex: Neutral-Leaching-Sulfides, with
the scoop of knowing the dynamics of the process for its better study and understanding. It explains the fundamental techniques
and methods of identification as well as the input signal to excite the system. The experiments that were carried out are described,
the mathematical model obtained is validated and the controller parameters are simulated to optimize the control of the liquor level
in the preheating tank.