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Reagent and processing
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Cost
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Usage
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Subtotal cost (USD t− 1)
|
|---|
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Recycling of used alkaline solution for KFeS2 synthesis
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Fe-bearing sludge
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0
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0.86 t
|
0
|
|
Supplementary Potassium sulphide
|
673.3 USD t−1
|
1.38 t
|
929.15
|
|
Supplementary Potassium hydroxide
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432.5 USD t−1
|
0.34 t
|
147.05
|
|
Tap water
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0.28 t−1
|
3.1 t
|
0.86
|
|
Pulping
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0.21 USD/kWh
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0.5 kW (total 1 h)
|
0.11
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Hydrothermal reaction
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0.21 USD/kWh
|
30 kW (total 24 h)
|
151.2
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Drying
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0.21 USD/kWh
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6 kW (total 20 h)
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25.2
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Total cost
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1253.57
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