Technology and equipment for recycling zinc dust generated by hot galvanizing of steel pipe

The invention relates to the technical field of steel pipe hot galvanizing production, in particular to a technology and equipment for recycling zinc dust generated by steel pipe hot galvanizing. Comprising the following steps that (1) zinc dust is collected, specifically, zinc dust generated by a plating assisting solvent film layer on the surface of a steel pipe in a flue is collected through a bag-type dust collector; 2) calculating the weight of the required hydrochloric acid, and injecting 20-22% of hydrochloric acid into the reaction kettle equipment resistant to acid liquid corrosion through a metering pump; (3) zinc dust substances containing zinc chloride (ZnCl2) and ammonium chloride (NH4Cl) are gradually and slowly added into the hydrochloric acid solution in the reaction kettle container according to the weight proportion, and the zinc dust and the hydrochloric acid solution are mixed in the reaction kettle; 4) after the reaction in the reaction kettle is completed, carrying out filter pressing on