Lanxess Deutschland Gmbh

Solarworld Aktiengesellschaft

Udo Kräuter

Hans-Dieter Block

Carsten Rosenhahn

Herbert Kunstmann

Peter Schreckenberg

Hans-Josef Moringen

Ralf-Gerhard Dipl-Ing König

Hans-Josef Dipl-Ing Moringen

The present invention relates to reduction- and oxidation-stable iron oxide black pigments having high color strength, the preparation thereof and the use thereof.

Reduction- and oxidation-stable iron oxide black pigments having high colour strength for colouring plastics and building materials, their preparation and their use

The invention relates to a method and a device for producing globular grains of high-purity silicon by atomising a silicon melt () in an ultrasonic field (). Globular grains having a grain size of 50 &#x3bc;m can be produced by means of said method and device and can be used to separate high-purity silicon from silane in the fluid bed. The silicon melt () is fed into the ultrasonic field () at a distance of &#x3c;50 mm in relation to a field node, and the atomised silicon leaves the ultrasonic field () at a temperature close to the liquidus point. The invention also relates to a use of the product produced according to the inventive method or using the inventive device, as particles for producing high-purity silicon from silane in a fluid bed.

Method and device for producing globular grains of high-puroty silicon having a diameter of between 50 &#x3bc;m and 300 &#x3bc;m and use of the same

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Leverkusen, Germany

Udo Kräuter