TALC BENEFICIATION

A novel method of preparing talc powder compositions by selectively exfoliating platy talc ore to produce a unique, low bulk-density, platy, high slip and lusterous powder base composition. The delamination of the platy talc ore is accomplished by employing a variety of forces to act on the particle...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	WILLIAM H. ASHTON, ROBERT S. RUSSELL
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMISTRY COMPOUNDS THEREOF CRUSHING, PULVERISING, OR DISINTEGRATING CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL DYES INORGANIC CHEMISTRY METALLURGY MILLING GRAIN MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-METALLIC ELEMENTS PAINTS PERFORMING OPERATIONS POLISHES PREPARATION OF CARBON BLACK PREPARATORY TREATMENT OF GRAIN FOR MILLING TRANSPORTING TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES
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Beschreibung
Zusammenfassung:	A novel method of preparing talc powder compositions by selectively exfoliating platy talc ore to produce a unique, low bulk-density, platy, high slip and lusterous powder base composition. The delamination of the platy talc ore is accomplished by employing a variety of forces to act on the particles in such a way that after delamination the length and width dimensions of the particles remain essentially unchanged, but the thickness of the particles are substantially reduced. Thus, the resulting particles are thinner but not smaller in the length-width than conventional talc particles, and their lubricity is heightened rather than decreased. The novel talc composition of the invention is particularly useful as a body powder.