A PROCESS FOR PRODUCING NANO-POWDERS AND POWDERS OF NANO-PARTICLE LOOSE AGGREGATE

摘要

The present invention discloses a process for producing nano-powders and powders of nano-particle loose aggregate, which comprises: (a) providing at least two reactant solutions A and B capable of rapidly reacting to form deposits; (b) supplying the at least two solutions A and B at least at the reaction temperature into a mixing and reaction precipitator respectively, i n which mixing reaction and precipitation are continuously carried out in sequence, the said mixing and reaction precipitator being selected from at least one of a tubular ejector mixing reactor, a tubular static mixing react or and an atomizing mixing reactor; and (c) treating the deposit-containing slurry continuously discharged from the mixing reaction precipitator. The process makes it possible to control the size of the nano-particles, produce s particles uniform in size, good in dispersibility and high in yield, while being simple and saving energy. The process can be used to produce nano- powders of nano-particle aggregates of various kind of metals, oxides, hydroxides, salts, phosphor compounds, sulphur compounds, organic compounds, and inorganic organic compounds.