Figure 3.

Physical characteristics of CPEs. Fw—flow through the orifice; θr—angle of repose (tg α); CI—compressibility index; DB—bulk density; DT—tapped density; DP—pycnometric density; P—porosity; MPS-LD—mean particle size; D₁₀, D₅₀, D₉₀—the diameters of a sample at the 10th, 50th, and 90th percentiles of the cumulative percent undersize plot; SSA—specific surface area; M—moisture content; UF₃—undissolved fraction after 3 min; UF₂₄—undissolved fraction after 24 h.