Menetelmä ja laite hienojakoisen metellisaostuman valmistamiseksi reaktorissa

The invention relates to an apparatus for producing a finely dispersed metal precipitation in a reaction chamber, the reactor 1 being supplied with liquid and a precipitating agent and these being set in vigorous stirring motion by means of a gls agitator 6 and flow obstacles 12. The liquid is fed to the lower part 7 of the reaction chamber and the flow issuing from the agitator is made to collide with the wall of the reactor directly above the base. At the same time, a precipitating agent is fed to the liquid flow in the annular zone formed by the flow obstacle, whereupon a precipitation with high bulk density in dry form is separated out from the liquid and removed together with the liquid as overflow from a gas chamber 8 in the upper part of the reaction chamber, which gas chamber is at least partially partitioned by means of an intermediate cap 9. The chamber which is left between a flow obstacle 12 and the wall 2 is 1/15 - 1/10 of the diameter of the reactor and the reactor is provided with supply members 15, 17 for precipitating agent.