To produce a high quality solid by precipitation by supplying a plurality of starting materials to a mixing chamber of a mixing apparatus comprising stirring blades through inlets formed in the circumferential wall of the chamber and discharging the resultant mixture containing the solid produced by mixing out of an outlet formed in the circumferential wall of the mixing chamber.
In the case of production of a solid such as carbonates, hydroxycarbonates, hydroxides to be used as precursors of catalysts or the simple substances, a plurality of starting substances are supplied to a mixing apparatus 3 through conduits 1, 2 especially in a manner that the resultant slurry comes to the center of impellers and at the same time sodium carbonate and a metal salt solution are added form side faces. Then, precipitation reaction is caused in the mixing apparatus 3 and the obtained mixture is supplied to a degassing tank 5 provided with a stirring apparatus 6 through a conduit 4. A partial flow of the product is turned back to the mixing apparatus 3 through a conduit 7 by a pump 8 and at that time, the temperature of the mixing apparatus 3 is adjusted to be at the demanded temperature by a heat exchanger 9.
KUMBERGER OTTO DR
MILIES MARCO DR
NETH NORBERT DR
WOLFGANG JUERGEN
RIEKER CHRISTOPHER WILLIAM DR
SPRAGUE MICHAEL JOLYON DR
STROEZEL MANFRED
