Raw Perlite is a vulcanized glass which appears as gray colored irregularly shaped structure. It can be processed under controlled conditions in order to make it suitable for use for different purposes. This perlite is considered to have good expansion & insulating properties which makes it ideal for high temperature treatments. After processing, Raw Perlite is also sometimes used as light weight filler for castings & ingots for having ability to prevent shrinkage.
Loss On Ignition
4 - 5 %