Dear Khun Pimpan,
As discussed earlier, I would like to summary immediate and continuous actions to control Cuprostar 1541 for acid copper as following,
1. Increase daily addition 1541 Aux from 400 to 750 ml, will discuss later when we get good result to start Auto-dosing for 1541 Aux.
2. Control Sulphuric Acid (H2SO4) at about 65 g/L, should not be lower than 60 g/L.
3. Chloride is already added to get at least 70 ppm, we will feedback to MIT if a little bit higher chloride is needed.
We reduced Auto-dosing replenishment rate of 1541 Maintenance from 38 to 35 ml/K.Ahr today, no need to add extra at this time but we will continuously monitor the brightness in Hull Cell.
Please kindly let me know if MIT have any question, thank you so much for great support. from MIT team.