Method for spray-forming melts of glass and glass-ceramic compositions

• Main Authors: Yuhas, David, Weinhold, Carsten
• Format: Patent
• Language: English; French; German
• Published: 04.10.2017
• Subjects: APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; ATOMISING APPARATUS; CASTING; CHEMISTRY; GLASS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; METALLURGY; MINERAL OR SLAG WOOL; NOZZLES; PERFORMING OPERATIONS; POWDER METALLURGY; SPRAYING APPARATUS; SPRAYING OR ATOMISING IN GENERAL; TRANSPORTING; WORKING METALLIC POWDER

The invention relates to a process and apparatus for forming a particulate composition, especially a particle glass composition, through the use of shock waves. A super-sonic nozzle element is utilized having inlets for introduction of cold and heated gas and a delivery tube for introducing molten material. Through the introduction of the cold and heated gases, droplets are formed from a molten stream, a cone-shaped standing shock wave is formed, and shock waves are formed via a modified Hartmann-Sprenger chamber, the shock waves impinging on the droplet stream to break up the larger droplets.