Abstract: In order to solve the problems of sticking wall and backward manual adding process of tal‐ cum powder in the production of powdery emulsion explosive，and comply with the relevant policy guid‐ ance，a new talcum powder conveying system is constructed by a company using technologies such as el‐ bow diameter reduction，pipeline reconstruction，storage and transportation system integration，intelligent control upgrading and dust control. The DN200 elbow pipe below the discharge port of the pulverizing tow‐ er is upgraded to a gradient variable diameter pipe，the curvature radius and bending angle of the elbow pipe are optimized，the overall translation transformation of the main pipeline is carried out，and the pipe support system is redesigned. A conical steel storage silo with a volume of 30 m3 is constructed，and a two�stage pneumatic conveying network is constructed. Build a distributed control system，integrate a number of core functional modules，and set up a variety of safety devices. Through the expansion of negative pres‐ sure dust collection system，innovative application of Venturi wet washing tower to improve the dust con‐ trol system. After the transformation，the probability of pipeline material accumulation is reduced to 18% of the original system，the uniformity of flow velocity is increased by 42%，the vibration is stable，the problem of pipeline wear is solved，the talcum powder is accurately added，the level of production intelli‐ gence is improved，the dust emission concentration is ≤5 mg/m3 ，the production efficiency，product quali‐ ty and working environment safety are significantly improved，which accumulates experience for the intelli‐ gent and green development of the industry and promotes the continuous progress of the industry.

Key words: powdered emulsion explosive, talc powder conveying, pipeline reconstruction, intelligent control