The invention discloses an intermediate-temperature-sensitized
emulsion explosive and a preparation method thereof. The
emulsion explosive is obtained through
sensitization of
emulsion matrix and a sensitizer, wherein the weight ratio of the emulsion matrix to the sensitizer is 98-99.6:0.4-2; the emulsion matrix comprises 5-10 percentage by weight of
oil phase and 90-95 percentage by weight of aqueous phase; the
oil phase comprises 28-40 percentage by weight of an emulsifying agent and 60-72 percentage by weight of an
oil phase material; the oil phase material is a compound formed by compounding complex
wax with any two of
liquid paraffin,
mineral wax or
microcrystalline wax. The preparation method comprises the following steps: the oil phase and the aqueous phase are pressurized through a
screw pump and are then mixed in a
static mixer to be subjected to pre-emulsification and fine emulsification, so as to obtain emulsion matrix, the emulsion matrix is cooled to 65-75 DEG C and is then pressurized again through the
screw pump to be mixed with the sensitizer in the
static mixer, and then the mixture is sensitized at a temperature of 65-75 DEG C, so as to obtain the intermediate-temperature-sensitized
emulsion explosive. According to the intermediate-temperature-sensitized
emulsion explosive and the preparation method thereof, the emulsion matrix has low
viscosity at the temperature of 65-75 DEG C, the technical problem that during high-temperature
sensitization, opposite phase of the oil phase material of the
emulsion explosive is easily caused is solved, and the technical defect that
sensitization bubbles are easily damaged when loading low-temperature-sensitized high-
viscosity and high-
hardness emulsion matrix is overcome.