Start-up and Improvements of the New Electrolysis Plant …
225
Table 3 Comparison of the old No. 1 electrowinning plant and the new No. 3 electrowinning plant
Items
The old No. 1 electrowinning
plant
The new No. 3
electrowinning plant
Amount of annual cathode
zinc production
66,000 t/y
Number of series
9
2
Electrode plate transport
Manual hoist · de-insertion
Automatic
crane · de-insertion
Electrolytic cell
2.05 L × 0.78 W × 1.19 H
(m)
8.0 L × 0.84 W × 1.75–2.05
H (in)
Steel + PVC
Polymer concrete + FRP
Cathode/cell
32 sheets
108 sheets
Cathode size
640 W × 865 H × 5 t (mm)
710 W × 1325 H × 6.3 t
(mm)
Anode size
620 W × 840 H × 71 t (mm) 685 W × 1305 H × 9 t (mm)
Cathode peeling
Hand peeling processing by
workers
Peeling machine 54 sheets
simultaneous processing
Transport to casting
Truck transport
Automatic conveyor transport
Slime cleaning
Supernatant siphon · bottom
unplug
Supernatant siphon · bottom
vacuum
Blower system in cooling
tower
Induced draft by sirocco fan
Forced draft by axial fan
Construction and Start-up of the New No. 3 Electrowinning
Plant
Construction work of the No. 3 electrowinning plant started in October 2009 and
completed in July 2011. The picture of the new No. 3 electrowinning plant is shown
in Fig. 4
Fig. 4 The new No. 3 electrowinning plant