Importance

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Abstract

A mixing tool 10 for bulk material and/or similar materials for attachment onto a shaft 11 in a drum of a mixer has mixing tool surfaces F.sub.1 17 and F.sub.2 18 which extend radially from the shaft 11 nearly up to the inner wall of the mixer. The mixing tool surfaces F.sub.1 17 and F.sub.2 18 are distinguished by tool profile surfaces F.sub.P1 and F.sub.P2 which are generated by a cut through a penetration body in the x-z-plane formed by moving the mixing tool surfaces F.sub.1 17 and F.sub.2 18 formed on the mixing tool 10 through the material to be processed. The mixing tool surfaces F.sub.1, F.sub.2 are formed in such a fashion that they span surfaces defined by factors c.sub.1 and c.sub.2 in dependence on the radius of the drum, and the material volume flows from the mixing tool surfaces F.sub.1 17 and F.sub.2 18 back into the material to be processed are preferentially equal and oppositely directed parallel to the axis. The tilting of the mixing tool surfaces F.sub.1 17 and F.sub.2 18 is defined by an angle .alpha. and an angle .beta..

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First Claim