Claims
- 1. An apparatus for preparing spherical, submicronic, monodispersed and non-aggregated particles of metal oxides comprising a convergent-divergent ejector terminating in a cylindrical portion coaxially positioned within a vertically positioned cylindrical chamber along it's longitudinal axis, wherein the diameter of the chamber is at least twice the diameter of the cylindrical portion of the ejector, the cylindrical chamber bounded at one end by a curved bottom and said convergent-divergent ejector is disposed such that it penetrates said curved bottom; an apertured plate disposed within said cylindrical chamber such that said cylindrical portion of the ejector passes coaxially through said apertured plate; said ejector further including an ejector chamber at an end thereof distal from said cylindrical portion and an ejector nozzle positioned in said ejector chamber for feeding an inert gas stream into said convergent-divergent ejector; means for feeding hydrolyzable metal compound vapors into said ejector chamber, and means on the curved bottom for the inflow of steam.
- 2. The apparatus according to claim 1, wherein the ratio between the diameter of the cylindrical chamber and the diameter of the cylindrical portion of the ejector ranges from 2 to 15.
Priority Claims (1)
Number |
Date |
Country |
Kind |
19819 A/83 |
Feb 1983 |
ITX |
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Parent Case Info
This is a division of application Ser. No. 582,546 now U.S. Pat. No. 4,574,078, filed Feb. 22, 1984.
US Referenced Citations (8)
Divisions (1)
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Number |
Date |
Country |
Parent |
582546 |
Feb 1984 |
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