Process for the pyrogenous production of very finely divided oxides of a metal and/or of a metalloid
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United States of America Patent
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Mar 24, 1981
Grant Date -
N/A
app pub date -
Oct 16, 1979
filing date -
Nov 17, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In case of the pyrogenous production of metal oxides or metalloid oxides, whenever a halogen compound is used as a starting material, an elementary halogen is formed as a byproduct. This may be converted in the cooling section of the reaction apparatus with hydrogen into hydrogen halide. For a better temperature control and prevention of uncontrolled deflagration of the hydrogen in case of the halogen detonating gas reaction, according to the invention the hydrogen is introduced into the cooling section by means of a double jacket pipe, whereby an inert gas is introduced additionally by way of the interstice between the inside wall and the outside jacket of the double jacket pipe into the cooling section.
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