Electroosmotic Dewatering of Iron Ore Tailings: A Laboratory Study to Improve Geotechnical Properties

Table 3

Electro-osmotic dewatering of some mine tailings and their solid content and energy consumption.

Tailings	Voltage (V)	Initial solid content (%)	Final solid content (%)	Consumed energy	Reference
Phosphate clay	13–15 V	14–17	25–39	21.3 kWh/dry-ton	[44]
Coal	2–46 V	17	31–35	64 kWh/dry-ton	[19]
Coal	33–40 V	45	75	20–30 kWh/dry-ton	[45]
Kimberlite and tin	16–46 V	8.1		144–880 kWh/dry-ton	[46]
Coal	30–60 V			20 kWh/dry-ton	[47]
Phosphate clay	3–20	13.2	25.7	96 kWh/dry-ton	[48]
Sand	22–50 V	45	67	33–94 kWh/dry-ton	[49]
Sand	10–30 V	% 233 (initial water content)	% 78 (final water content)	38.6 kWh/dry	[50]
Bauxite	5–15V	20–30	43–66	31.4 to 375.2 kWh/m^3	[51]
Iron	15–90 V	43.01	48.66–87.63	0.588–30.645 kWh/dry-ton	This study