• Contains 350 million inert air cells per cum.
• Hence it floats in water and it can be cut easily like wood.
• A light, opaque, black, cellular glass made by adding powdered carbon to crushed glass and firing the mixture.
• Fire proof, rigid and an excellent heat insulator.
• Good thermal and acoustic insulator.
• Also known as Cellular Glass.
• It is lightweight and has fine, watertight pores that make it an exceptional barrier against moisture, humidity and debris.

Courtesy - 123rf

Courtesy - Sharkuae

Uses:

• Used in Refrigeration and Air Conditioning industry, as a substitute for cork.
• Used in Flooring.
• Used as a Substitute for partition.
• Used as a Corning.

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Size & Thickness:

Thickness varying from 30mm to 150mm 

Manufacturing Process:

• Prepared in the form of rectangular blocks
• Foamed glass is manufactured using a process that traps gas bubbles in the glass, creating an expanded material with a spongy consistency.

Steps to Make Foam Glass:

• Using industrial glass crusher, first clean and crush recycled glass material.
• Use enough glass to fill the glass furnace to capacity for time and cost efficiency.
• Use glass that has a similar expansion coefficient for best results. The temperatures at which the glass melts and re-solidifies.
• Mix crushed glass with powdered cullet that adds strength to the glass and with a carbon based material such as coal powder.
• The carbon reacts with the glass to create carbon dioxide, which develop a foam consistency with a volume approximately 15 times that of the original crushed glass.
• Place the crushed glass mixture on heat tolerant kiln forms with an anti sticking agent.
• Load the kiln forms onto the roller conveyor to a high temperature tunnel furnace.
• The glass should be heated to 1,000 to 1,300 degrees Celsius.
• Slowly cool or anneal the foamed glass.
• Gases allowing the glass to expand while heating and then stabilize during cooling.
• The finished product will be pumice stone.

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