Method for automatically removing powders in process of electrolytic preparing metal powder body

Abstract

The invention relates to an automatic powder removing method in the process of preparing metal powder by electrolysis, which is characterized in that: in the process of preparing the metal powder by electrolysis, intermittent ultrasonic-reverse pulse current is exerted, a metal powder product on an anode is removed from a cathode surface under the synergic action of the ultrasonic waves and reverse pulse current, wherein, the synergic action time of the ultrasonic waves and the reverse pulse current is 1 to 30s, and the action time interval is 20 to 2000s. The method can effectively alleviate the labor intensity, reduce the energy consumption and improve the working conditions of metal power electrolysis; in addition, the method can ensure the continues operation of the electrolysis process, and has the advantages of good power removing effect, stable product stability and being capable of obviously improving production efficiency.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, in particular to an automatic depowdering method in the process of preparing metal powder by electrolysis. Background technique [0002] Electrolysis is the main method for industrial production of metal powder, especially in the production of heavy metal powders such as copper and nickel and the field of silver electrolytic refining. Compared with other powder making methods, the biggest advantage of the electrolysis method is that the powder has high purity, large specific surface area, and good compressibility (compressibility and formability). It is suitable for the preparation of metal powder, metal electrolytic refining and other processes. [0003] In the process of electrolytic powder making, in order to ensure the quality of the powder and the normal progress of electrolysis, the powder product on the cathode must be removed regularly. At present, the electrolysis process of metal po...

AI Technical Summary

Problems solved by technology

In the continuous ultrasonic field, the metal powder can be automatically shed, but if it is not for the special performance requirements of the powder preparation (such as nano-scale particle size, etc.), applying continuous ultrasonic waves will inevitably increase energy consumption and production costs.

However, with intermittent ultrasonic waves, it is difficult to realize the automatic shedding of powder, and the stability of electrolytic production cannot be guaranteed.