Abstract: In order to improve the sensitization effect of emulsion explosive production line with steel band for cooling technology,the liquid spraying device is installed above the steel band,and the adding process of chemical sensitizer and accelerator is changed into the spraying process.The stduy results show that under the shearing action of 0.01~0.05 MPa low pressure air,through parallel 2~4 outside two-fluid nozzle,the solution containing chemical sensitizer and accelerator can be respectively sprinkled evenly on the emulsified material,which can disperse quickly and evenly,therefore,the sensitization effects is improved,the damage degree of emulsified material is reduced,besides that,the product capabilities is also improved.

Key words: Emulsion explosive, Steel band cooling process, Chemical sensitization, Spraying