Degussa Aktiengesellschaft

Evonik Degussa Gmbh

Roland Schaffer

Herbert Riemenschneider

Thomas P Riedemann

Gerd Theodor Brand

Rudolf Vanheertum

Lukas M Von Hippel

Uwe Schachtely

Guenther Michael

Manfred Sauer

Andreas Gutsch

Ralph Hofmann

Guenter Stein

Rainer Friehmelt

Michael Hirschhäuser

Richard F Cavagnaro

Klaus W Rolf

Hans-Juergen Strempel

Andreas Ernst

Hans-Joachim Seydel

Hans-Jürgen Strempel

Frank Dieter Hünig

Johannes Andreas Joze Middelman

Günter Stein

Frank Dieter Huenig

Johannes Andreas Middelman

Thomas Riedemann

Michael Hirschhauser

Frank Dieter Hunig

Michael Hirschaeuser

Pyrogenically prepared silicon dioxide is compacted to give crusts, in that it is subject to preliminary de-aeration, and is compacted to give crusts, and the crusts are broken and, if appropriate, classified. The tamped bulk density (to DIN EN ISO 787-11) of the silicon dioxide compacted to give crusts is from 185 to 700 g/l. It can be used as filler in rubber mixtures.

Pyrogenically prepared silicon dioxide compacted to give crusts

An apparatus for filling containers, said apparatus comprising a feed nozzle which may be placed over the feed orifice of the container, the feed nozzle being so constructed that the solids may be introduced under pressure and the container being surrounded by a cage, as well as a process for filling containers, in particular with finely divided solids having a high air content by

Apparatus and process for filling large containers of different sizes and shapes

A method of producing hydrogen cyanide by the gas-phase reaction of methane with ammonia at elevated temperature and an ammonia/methane ratio of 1.001 to 1.1. The conducting of the gaseous reaction mixture through a corona discharge causes the reaction to start at temperatures below 1000.degree. C. without the action of a catalyst. This results in considerable savings of the necessary investment expenses as well as of the running costs for energy.

Method of producing hydrogen cyanide

An apparatus and method for dispensing fine particle material from a container such as a flexible intermediate bulk container. The invention includes a dispensing assembly that has a dispensing device that is secured to an outlet tube of the container. Securement is achieved by a strap member wrapped about the container's outlet tube and a clamping casing and/or by an inflatable member that expands outward from the clamping casing. The casing surrounds a transport tube which is axially shiftable following securement of the clamping casing to the outlet tube. A head piece with gas cavity and radial and oblique extending ports is provided at the end of the transport tube. The dispensing device is inserted into the outlet tube below a blocking member provided at the base of the outlet tube. Following attachment of the outlet tube to the clamping casing, the blocking member is released. The transport tube is then released from a first position, shifted and then fixed in a second position. The second position places the head of the dispensing device into the main compartment of the container and above the released blocking member. At this location gas, is injected through the ports and product is drawn out through the interior of the transport tube. In an alternate embodiment, there is used, either alone or in combination with the headpiece, an injection branch for directing a jet of air down the central axis of the transport tube. In another embodiment, a constricted member having a venturi configuration is provided in the same area within the transport tube as the outlet of the injection branch.

Method and apparatus for dispensing particles from a container

A tube device for emptying powdery substance from a container in which an air connection pipe is arranged. The air exit opening of the air connection pipe is located coaxially to the tube in the direction of the interior of the tube. The opening of the tube is cut open on a slant to form an angle of less than 90.degree. with the horizontal axis of the pipe.

Device for emptying powdery substances from containers

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Linsengericht, Germany

Roland Schaffer