Glassolite Ltd

Valunor Ag

Finn Erik Solvang

Norman Blank

Gunnar Sveinsbo

Gunnar SveinsbØ

The present disclosure concerns expandable silica particles having a coating comprising talc powder and kaolin powder provided on the outer surface of the expandable silica particle and expandable and expanded silica particles comprising silica fume and/or ultrafine quartz silica sand beneath the surface of the particles. Methods for producing expandable and expanded silica particles are disclosed, including a method using a vibration plate and a furnace having a vibration plate for carrying out that method. The expanded silica particles have high compressive strength, substantially uniform cell size and distribution, low water absorption, and low porosity on the outer surface. They are useful as a filler in matrix materials, like concrete or epoxy, as insulation material with various binder materials, and as water filtration medium.

Expandable silica particles and methods for making and using the same

An apparatus and method for producing foamed glass having a silo () for receiving a glass mixture containing a temperature-activated foaming agent, a sluice chamber () arranged to receive a volume of glass mixture from the silo, a feed chamber () arranged to receive a volume of glass mixture from the sluice chamber, an extruder chamber () arranged to receive a volume of glass mixture from the feed chamber where the glass is melted and the foaming agent is activated, one or more nozzles () arranged at an end of the extruder chamber, through which a viscous foamed glass material may exit under influence of a positive operating pressure and an expansion chamber () arranged to receive foamed glass mixture from the nozzles. The invention also includes a novel foamed glass product having a glassy, sealed outer surface and a unique internal cell structure.

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Noetteroey, Norway

Finn Erik Solvang