Fremstilling af boroxid

Amorphous boric oxide-containing product having about 80 to 90% B2O3 is produced by heating boric acid to an elevated temperature of about 180 DEG to 220 DEG C. to dehydrate the boric acid and form a molten glass which is cooled to a solid glassy product. The solid glass can be comminuted to produce...

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Bibliographic Details
Main Authors KWAMYA, JOHN, D, GRAY, TRACY, E, FISHER, RICHARD, P
Format Patent
LanguageDanish
Published 04.02.2002
Edition7
Subjects
CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS
CHEMISTRY
COMPOUNDS THEREOF
GLASS
INORGANIC CHEMISTRY
JOINING GLASS TO GLASS OR OTHER MATERIALS
MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
METALLURGY
MINERAL OR SLAG WOOL
NON-METALLIC ELEMENTS
SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS
SURFACE TREATMENT OF GLASS
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Summary:Amorphous boric oxide-containing product having about 80 to 90% B2O3 is produced by heating boric acid to an elevated temperature of about 180 DEG to 220 DEG C. to dehydrate the boric acid and form a molten glass which is cooled to a solid glassy product. The solid glass can be comminuted to produce a particulate product. Preferably the boric acid is heated at about 195 DEG to 205 DEG C. The process is readily adapted to a continuous process in which the boric acid is continuously fed through a heated reactor-mixer such as a Kneadermaster mixer or Discotherm mixer. The molten glassy product is cooled to form a solid glassy product which can be comminuted to a desirable particle size range.
Bibliography:Application Number: DK19960913246T