Perlite uses

Dicalite. TM for a group of products made from either diatomite or perlite, used in filters and filter-aids. 

Question by M. P. Hnilicka, NRC Equipment Corporation Is the 3 ft of perlite used at Lake Charles a vacuum insulation or an atmospheric one ... 

Because most of the perlite used commercially is in its expanded form, products are differentiated according to whether they have been expanded. 

Cementitious materials use a hydraulically setting cement such as Portland cement as a binder with a filler material of good insulation properties, e.g., verminculite, perlite, etc. Concrete us frequently used for fireproofing because it is easily installed, readily available, is quite durable and generally economical compared to other methods. It is heavy compared to other materials and requires more steel to support that other methods. 

Strong-Lite Products Corporation Emmett Sanders Road P.O. Box 8029 Pine Bluff, AR 71611, US A tel 1 501 536 3453 toll free 1 800 255 9057 fax 1 501 536 1033 perlite vermiculite 120 165... 

The largest LH2 tank constructed so far is the NASA 3407 vacuum perlite-insulated spherical storage tank at the Kennedy Space Center, Florida, used in the US space shuttle program. The outer sphere is made from carbon steel with an inside diameter of 21.34 m and the inner sphere is made from austenitic stainless steel with an inside diameter of 18.75 m the ullage is about 10 %. The tank has a boiloff rate of 0.03 % or approx. 800 1 per day [51]. For comparison purposes the LH2 storage tank within the External Tank (47 m height, 8.4 m diameter) of the US Space Shuttle has a volume of almost 1600 m. ... 

In a world market of approximately 1.8 million metric tons, the leading perhte producers are the former Soviet republics of Armenia and Ukraine (35%), the United States (25%), and Greece (12%). In die US the market for perlite is dominated by formed insulation products (58%), followed by filter aid, horticultural products, and filler applications. 

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