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1. (WO2018001409) METHOD AND DEVICE FOR PRODUCING HOLLOW MICROGLASS BEADS

Pub. No.:    WO/2018/001409    International Application No.:    PCT/DE2017/100490
Publication Date: Fri Jan 05 00:59:59 CET 2018 International Filing Date: Tue Jun 13 01:59:59 CEST 2017
IPC: C03B 19/10
Applicants: BPI BEADS PRODUCTION INTERNATIONAL GMBH
HOFMEISTER KRISTALL GMBH
Inventors: SCHLICKE, Jürgen
STACHE, Lutz
Title: METHOD AND DEVICE FOR PRODUCING HOLLOW MICROGLASS BEADS
Abstract:
The invention relates to a method and a device for producing hollow microglass beads (3.4) from molten glass (3), wherein the hollow microglass beads (3.4) are manufactured in a diameter range from 0.01 mm to 0.1 mm in a continuously operating process while avoiding glass filament formation. Molten glass strands (3.1) exiting a melting device (1) are atomized by means of hot gas (14) to form glass particles (3.2). Subsequently, during passage through a rounding/expansion duct (6), the glass particles (3.2) are rounded to form solid microglass beads (3.3) and expanded to form hollow microglass beads (3.4). The hollow microglass beads (3.4) can advantageously be used as a filler for lightweight building materials or as a constituent part of coatings, paints and plasters/renders.