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The high –strength fracturing proppant (GG category) Process bauxite with high content finely and make it into small and round grains with different grain diameters like 0.45mm-0.90mm, 0.09mm-0.224mm with chemical agents and transformation agents. Finally fire them under high temperature. In this way, high strength fracturing propping agent is finished. It has high strength, low breaking rate, good sphericity, etc. under closing pressure. It is the best product for stratum fracturing transformation of oil and gas field at present. The specification and technical performance of GG production specification70/4040/2020/16Index propertiesDensity g/ccApparent density g/cc≤3.50≤3.50≤3.50Bulk density g/cc≤1.95≤1.95≤1.95Roundness≥0.9≥0.9≥0.9Sphericity≥0.9 ≥0.9≥0.9Turbidity<25<25<25Anti-crushing capacity(7500psi)%≤1≤6≤15Acid solubility (12%HCL+3%HF)%≤5≤5≤5ConductivityMedium distilled watermeasuring modeAPI linear flowAuxiliary set solubility1Ib/ft2Product index Small round particles of the appearanceSize 0.45-0.90mm 97%Sphericity ≥0.80Bulk density g/cm3 1.50-1.80Acid solubility % ≤5Broken rate % ≤8Usage It is mainly used for supporting fissure of stratum fracturing transformation of deep oil and gas field. Enhance permeability of stratum Circulate oil gas .Increase output of oil gas . I