The invention discloses a method and
system for preparing
silver copper oxide composite
powder. The preparation method comprises the following steps that 1, silver
raw material and
copper raw materialare weighed according to the proportion, the sliver
raw material and the
copper raw material are dissolved to prepare a precursor solution containing
silver nitrate and
copper nitrate; and 2, an atomization treatment is carried out on the precursor solution to obtain precursor
fog drops with the particle size being 0.01-100 [mu]m, and
thermal decomposition is carried out on the precursor
fog drops at the temperature of 400-1000 DEG C to obtain the
silver copper oxide composite
powder. The preparation
system comprises an atomizing device, a heat treatment device and a
cyclone collecting device. The preparation method is characterized in that a proper amount of C1-C4
alcohol is added when the precursor solution is prepared, and therefore the degree of
sphericity of the
silver copper oxide composite
powder can be effectively controlled; a proper amount of
ammonia water is added, and therefore the silver
copper oxide composite powder with the hollow structure can be prepared; the cyclonecollecting device can be used for effectively grading powder bodies with different particle sizes; and the
process design is scientific, the process is continuous, the equipment structure is reasonable, the raw materials are easy to get and low in price, the phase of the
reaction product is controllable, the purity is high, the particle size is controllable, large-scale production can be realized,and the application prospect is wide.