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AssigneeVereinigte Aluminium-Werke Aktiengesellschaft
InventorsJorg Kruger, Roland Thome, Dieter Moritz, Hubert Bings, Herbert Losert
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A process for extracting hydrogen fluoride from fluorine containing materials includes countercurrently contacting the materials with steam having a plane of rotation relatively perpendicular to the direction of flow of the material. An apparatus for the extraction of hydrogen fluoride from fluorine containing materials includes a rotary kiln having a first zone wherein a steam-air mixture countercurrently contacts the materials in an oxidation step, a second zone wherein an oxygen containing gas is tangentially injected into the kiln to provide complete combustion of carbon containing materials, a third zone wherein a steam stream countercurrently contacts the materials in a reducing step and means for providing a plane of rotation to the steam which is relatively perpendicular to the direction of flow of the material.
Apparatus for the manufacture of hydrogen fluoride from carbon and fluoride containing solid materials, which comprises:
Dependencies are inferred from the claim text.