Process for preparing aluminium trihydroxide
AssigneeNabaltec AG
InventorsAlfred Reimer, Carsten Ihmels, Christian Beer
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Abstract
The invention relates to a process for the milling-drying of a raw mixture containing aluminum trihydroxide having an average particle size D50 in the range from 50 to 130 μm and a specific BET surface area in the range from 0.01 to 0.5 m2/g and containing from 0.1 to 20% by weight of water, based on the raw mixture, which comprises the steps i) introduction of the raw mixture into a milling-drying apparatus, ii) introduction of a hot air stream having a temperature in the range from 20 to 100° C. into the milling-drying apparatus so as to flow through the milling-drying apparatus and iii) comminution of the aluminum trihydroxide present in the raw mixture in the milling-drying apparatus.
Claims12
A process for the milling-drying of a raw mixture containing aluminum trihydroxide having an average particle size D50 in the range from 50 to 130 μm and a specific BET surface area in the range from 0.01 to 0.5 m2/g and containing from 0.1 to 20% by weight of water, based on the raw mixture, which comprises the steps
- i) introduction of the raw mixture into a milling-drying apparatus,
- ii) introduction of a hot air stream having a temperature in the range from 20 to 100° C. into the milling-drying apparatus so as to flow through the milling-drying apparatus and
- iii) comminution of the aluminum trihydroxide present in the raw mixture in the milling-drying apparatus.
Dependencies are inferred from the claim text.