Figure 9

The properties of proppant samples with different dosages of V2O5 and MnO2 additives sintered at various temperatures: (a,c) bulk density, and (b,d) breakage ratio.

The properties of proppant samples with different dosages of V2O5 and MnO2 additives sintered at various temperatures: (a,c) bulk density, and (b,d) breakage ratio.