This unit is founded in 2014 in area of 120 m2 with bellow goals:
1- Producing hydrate cake in order to be used in production line.
2- Minimizing waste of Zn in leaching cake produced in production line.
This unit has 5 filter presses which 4 of them are used for filtration of leach and one filter press is used for filtration of hydrate cake. The unit can use 100 tons of cake as a feed each day and produce 30 mts of hydrate cake.