This invention relates to an apparatus for producing a metal powder
product using either conventional electrowinning or alternative anode
reaction chemistries in a flow-through electrowinning cell. A new design
for a flow-through electrowinning cell that employs both flow-through
anodes and flow-through cathodes is described. The present invention
enables the production of high quality metal powders, including copper
powder, from metal-containing solutions using conventional electrowinning
processes, direct electrowinning, or alternative anode reaction
chemistry.