Production of pyrogenic metal oxides in temperature-controlled reaction chambers
AssigneeWacker Chemie AG
InventorsTorsten Gottschalk-Gaudig, Markus Niemetz
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Abstract
Pyrogenic metal oxides having consistent quality and consistency between batches are prepared by flame hydrolysis in a reactor whose walls are cooled to below 500° C.
Claims19
-16. (canceled)
A metal oxide production apparatus comprising at least one burner nozzle, a feed apparatus for the reaction materials, a reactor wall, and a reactor-wall cooling system which provides a wall temperature of less than 500° C.
A pyrogenic metal oxide having a polydispersity index (PDI) of the average intensity-weighted particle diameter z-average of the metal oxides, obtained by means of photon correlation spectroscopy, of less than 0.3.
Dependencies are inferred from the claim text.