Zinc powder is prepared using zinc ingots as raw materials and natural gas as fuel through high-temperature melting, constant temperature directional evaporation, and low-temperature condensation. Temperature control and condensation equipment are crucial during the condensation process. Currently, 30% of spherical zinc powder has an average particle size below 5.5um, and 70% has an average particle size between 7-8um. Although the equipment and process were at a leading level in China before, the demand for spherical zinc powder below 5.5um in the international and domestic markets is increasing, Moreover, the flowability of spherical zinc powder prepared by current equipment and processes is also poor, with low loose density and easy cleaning of blocks. Therefore, it is necessary to optimize the equipment or process, especially the condensing supporting equipment.
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