Process for continuous dry granulation of powdered carbon black

A continuous drying process for powdered lampblack, comprises: (i) passing the lampblack through a helical granulator assembly which is formed by a helical sequence of metal quills whose maximum tip speed is 1-6 m/s; (b) allowing an average residence period for the powder of 20-600 seconds; (c) inoc...

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Bibliographische Detailangaben
Hauptverfasser:	KONNY VOGLER, KARL VOGEL, JAN KOPIETZ
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS THEREOF DYES INORGANIC CHEMISTRY METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-METALLIC ELEMENTS PAINTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POLISHES PREPARATION OF CARBON BLACK THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES
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Beschreibung
Zusammenfassung:	A continuous drying process for powdered lampblack, comprises: (i) passing the lampblack through a helical granulator assembly which is formed by a helical sequence of metal quills whose maximum tip speed is 1-6 m/s; (b) allowing an average residence period for the powder of 20-600 seconds; (c) inoculating the raw incoming lampblack with 50 % preferably 5-30% granular lampblack (9); (d) pre-compressing the raw incoming lampblack to 150-300 g/l; and (e) using a dry pearl drum after the helical granulator.