of electrolyte and thickener. Figure 2 indicates that the max-imum dispersed sediment volume is obtained for the high-est thickener concentration and the lower electrolyte con-centration. Figure 3 shows that the concentration of electrolyte has no influence on the caking level, but that a high concentration of thickener limits consequentially the high permeability to both air and water. Oxygen and sulfide minerals may be contained in the dump. ... Liquid is removed from the tailings slurry in thickeners and ... Spent Electrolyte Spent electrolyte is generated during electrowinning activities. Historically, electrolyte went through a. Mining Industry Profile Copper.