Schott Ag

Schott Glas

Hildegard Römer

Uwe Kolberg

Guido Räke

Werner Kiefer

Frank-Thomas Lentes

Wolfgang Schmidbauer

Andreas Langsdorf

Peter Nass

Volker Ohmstede

Michael Leister

Christian Kunert

Karin Naumann

Karl Mennemann

Erich Rodek

Jörg Hinrich Fechner

Norbert Greulich-Hickmann

Günter Weidmann

Paul Kissl

Thomas Kirsch

Peter Schreckenberg

Frank Büllesfeld

Reinhard Männl

Sybill Nüttgens

Nicole Surges

Andreas Gross

Josè Zimmer

Thomas Stelle

Stefan Schmitt

Michael Hahn

Gerhard Nuessle

Cevin Czisch

Udo Fritsching

Wolfgang Jost

Ernest Walter Schäfer

Detlef Köpsel

Christian Müller

A method for melting inorganic materials, preferably glasses and glass-ceramics, in a melting unit with cooled walls is provided. The method includes selecting the temperature of at least one region of the melt is selected in such a way as to be in a range from T&#x2212;20% to T+20%, where the temperature Tis given by the temperature at which the energy consumption per unit weight of the material to be melted is at a minimum, with the throughput having been selected in such a way as to be suitably adapted to the required residence time.

Melting and refining in tanks with cooled walls

The invention relates to glass powder, especially a biologically active glass powder, which includes a plurality of glass particles and which is characterized by the following features: the glass particles are made up by &#x3e;90% of non-spherical particles; the geometry of the individual non-spherical particle is characterized by a ratio of length to diameter of 1.1 to 10.

Glass powder, especially biologically active glass powder, and method for producing glass powder, especially biologically active glass powder

A method and an apparatus for the rapid melting of glasses in a skull crucible is provided. The method and apparatus introduce high-frequency energy into the contents of the crucible by means of a coil arrangement surrounding the skull crucible, in order to heat the melt, and the batch is laid and the molten glass discharged in the upper region of the crucible, and undissolved constituents of the batch are retained by means of a cooled bridge which is immersed in the melt. The glass is taken off above the coil arrangement and is fed for further processing without flowing through the coil region.

Method and device for melting glass using an induction-heated crucible with cooled crust

The invention relates to a method and a device for producing colored glasses. The aim of the invention is to obtain a paricularly intimate mixture and to enable a quick change of the melt at the same time. To this end, the following procedure steps are applied: a melt made of a compound or fragments of glass is produced, the glass melt is further processed in at least one additional vessel, the melt is supplied to a skull device () (skull pot or skull channel) during subsequent processing, a dye is supplied () to the melt after the melt was in the melting station () but before the melt enters the skull device () or while said melt is in the skull device.

Method and device for producing colored glasses

A structural component for a device for the treatment of melts, especially of glass melts, having a base body of metal or of a metal alloy and a cooling system in which a cooling medium is led through the structural component for the leading-off of heat. The base body is provided with a coating of a material the decomposition temperature of which lies below the temperature of the melt, and the cooling system is designed and arranged in such manner that the temperature of the boundary layer of the melt that immediately surrounds the structural component lies below the decomposition temperature of the coating material.

Coating of cooled devices

The invention relates to a skull pot () for melting, crystallizing or refining inorganic substances. Said pot comprises a pot wall (), a pot bottom (), an induction coil () which surrounds the pot wall () and by means of which high-frequency energy can be coupled into the content of the pot. The pot wall () is formed by a ring of metal pipes which can be connected to a cooling medium. Slits are embodied between adjacent metal pipes. The bottom () is provided with a discharge for the melt (). A sleeve () is allocated to the discharge. The admission end () of the sleeve () protrudes far into the inner chamber of the skull pot () in such a way that, during use, the melt () can be withdrawn through the crystallized bottom layer () in a controlled manner without the danger of impairing quality.

Skull pot for melting or refining inorganic substances, especially glasses and glass ceramics

A method and device for nozzle-injection of gas into molten glass is disclosed wherein a gas stream is introduced into the molten glass in a temporally pulsed throughput such that the gas stream is interrupted between two sequential pulses, the duration of each pulse amounting to less than one second.

Method for nozzle-injection of gas into molten glass

This invention relates to a device for melting or refining glass or glass ceramics. According to the invention, such a device is provided with the following characteristics: a channel which is arranged in an essentially horizontal manner and which is provided with an inlet and an outlet for the glass melt; and an HF coil for coupling HF energy into the melt is allocated to the channel. The channel is made of a plurality of metal pipes in a similar way to a skull pot. Said pipes can be connected to a cooling medium.

Method for melting or refining glasses or glass ceramics

The invention relates to a method for heating up and shaping a preform consisting of glass or glass ceramic. According to the invention, a preform, formed using conventional methods, is heated to a temperature that is below the adhesion temperature of the gas, i.e. to below critical viscosity; in a second heating phase the preform is put into a hovering state through the supply of levitation gas; in the hovering state the preform is heated by a microwave heating apparatus to a temperature that permits its shaping; and the preform is delivered to a shaping station.

Method for heating glass semi-finished products above the adhesion temperature

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Karben, Germany

Hildegard Römer