The electrolytic nickel system comprises nearly 20 subsystems including: MHP raw material storage & grinding plant, MHPatmospheric leaching/iron & aluminum removal & filtration plant,thickening& CCD washing, nickel matte raw material storage &grinding plant, nickel matte atmospheric leaching plant, nickelmatte oxygen pressure leaching plant, nickel matte filtration plant,No.1 extraction plant, No.2 extraction plant, oil removal plant, evaporation crystallization plant, anolyte evaporation, nickel electrowinning plant, manual stripping plant, solvent oil storage, hydrogenperoxide & acid storage, circulating water system, rectifier coolingwater system, and central control system.

The system adopts Siemens PCs7 with 14 redundant controlstations, establishinga plant-wide distributed controlsystem andhistorical database. Currently, two nickel electrowinning systemshave been commissioned and put into operation.