The solution hall with an area of 1000 square meters is located in the central part of the factory.
The nominal production capacity of this unit is 1,000 liters of solution per night during 3 stages of leaching, hot treatment and cold treatment, and it is operating in 4 shifts (3 work shifts and 1 rest shift).
The main feed of this unit is crushed soil in the crushing unit of Shamsh Roy Mihan company.