The invention relates to a
metal powder preparation device and method therefor. The device comprises an atomization furnace, a heater, a cooler, an atomization chamber, an atomizer, a pneumatic classifier, a middle bin, a sieving funnel, a screening
machine, a deduster, a balance tank, a shell-and-tube
heat exchanger, a vacuum obtaining device, a
control system, an infusion tube, a conduit, a pipeline, a gas channel, a pneumatic
butterfly valve, an
electromagnetic valve and the like. The method comprises
atmosphere preparation,
metal smelting, infusion, centrifugal atomizing, pneumatic classification,
mechanical screening, gas purification, cooling and the like, the
metal is smelted and treated so as to be poured onto the atomizer for centrifugal atomization to form
powder, the
powder is classified by the pneumatic classifier, after classification, rough powder is screened by the
mechanical screening so as to obtain the finished powder,
fine powder is sent into the deduster by
airflow for purification, the purified gas is driven by a
high pressure centrifugal fan so as to be speeded up to be atomized and classified again after being subjected to heat exchange through the shell-and-tube
heat exchanger. The device can be used for
continuous production of spherical powder below -320 meshes, and the
oxygen content is less than or equal to 80ppm.