Foam glass ( cellular glass , foam glass) - this is a highly porous inorganic insulation cellular material obtained by sintering finely ground glass and a blowing agent , reminiscent in structure to a solid lather .
When the average cell diameter 2 mm thickness of the cell walls varies in the range from 20 to 100 microns. The porosity of different kinds of foam glass ranges from 80 to 95 %.
The raw materials used in the manufacture of foamed glass molten glass , which can be welded from the following starting materials : quartz sand , limestone, soda and sodium sulphate .
You can also use waste glass production - Glass fight, so the issue is solved in parallel recycling of glass and broken glass .
As the blowing agent used ( % by weight of glass )
• Anthracite - 1.5 ... 2% ;
• coke - 2 ... 3 % ;
• semi- peat ;
• limestone or marble chips - 1 ... 1.5 % ;
• lamp black - 0.2 ... 0.5 % ;
• dolomite .
Low decomposition gasifier should be 50-70 ° C above the softening temperature of the glass powder.
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