【Objective】The processing technology for ultrafine power was studied to provide a reference for the development and utilization of wild roxburgh slag.【Method】Using wild roxburgh slag as raw material and anti-agglomeration regent as auxiliary materials,ultrafine powder was made.On the basis of single factor test,influencing factors including grinding temperature,grinding time as well as type and dosage of anti-agglomeration reagent were determined using index of angle of repose,slip angle,amount of agglomera...