Process for producing yellow copper (I) oxide with narrow particle size range

摘要

In a process of producing copper(I) oxide by the action of an aqueous solution of a mineral acid and of oxygen-containing gas on small-lump copper metal with continuous agitation, a temperature from 10 DEG to 40 DEG C., preferably from 15 DEG to 35 DEG C., is maintained to effect a formation of particulate yellow copper(I) oxide (Cu2O). An organic acid of the group consisting of formic acid, acetic acid, ascorbic acid, preferably ascorbic acid, may be used in addition to the mineral acid.