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Our Βusinesses
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    Steel Casting Fluxes
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    Civil Engineering Additives
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    NYCO
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    Bentonite & Perlite Intermediates
Our Applications
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    Ceiling Tiles & Boards
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      Boards
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    Civil Engineering
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      Diaphragm/Slurry Wall
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      Horizontal Directional Drilling
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      Landfill and Sealing Liners
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      Shield Tunnelling
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    Construction materials
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    Food – Feed
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      Phosphates
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    Foundry
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      Core Sand Binders and Additives
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      Green Sand Additives
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      Technical Support
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    Adhesives and Sealants
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    Ironmaking
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    Mold Fluxes Raw Materials
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Our Natural Resources
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    Bentonite
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    Perlite
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    Pozzolan
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    Wollastonite
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    Zeolite
Our Industrial Solutions
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    ASPECT® – Chemically Modified/Untreated, Fine Particle Size, High Aspect Ratio Wollastonite
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    Bentonite Clumping Pet Litter
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    Blends
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    Casting Fluxes
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    Cement Stable Bentonite
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    Civil Engineering Flocculants
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    Construction Pozzolan
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    Construction Wollastonite
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    Core Sand Additives
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    Covering Materials
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    Drilling Bentonite
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    ENVIBOND® System
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    Green Molding Sand Expertise
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    HARRP – Coarse Grades of Untreated Wollastonite
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    HDD Bentonite
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    Horticultural Raw Perlite
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    Horticultural Zeolite
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    Inorganic Core Sand Binders
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    Iron Ore Pelletizing Bentonite
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    Laboratory Analysis
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    Lustrous Carbon Formers
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    Metallurgical Active Slags
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    Micrasil®
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    Mold Flux Feeders
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    Moulding Sand Binders
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    NYAD® – Untreated Wollastonite
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    NYGLOS® – Chemically Modified/Untreated Wollastonite
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    NYLITE™ – Wollastonite Blend and Additive
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    Other Foundry Products
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    Phosphate Production Additive
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    PHYLLOCOAT™ – Chemically Modified Aluminosilicate (Experimental)
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    PHYLLOMAT™ – A Lamellar-Shaped Aluminosilicate
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    Pipe Jacking Bentonite
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    Raw Graded Perlite
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    RIKO®
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    Sealing Bentonite
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    Service Lab Analysis Database
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    Slag Binders
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    Slurry Wall Bentonite
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    Technical Support and Innovation
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    Tunneling Bentonite
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    ULTRAFIBE® – Chemically Modified/Untreated Wollastonite for Friction Materials
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    ULTRAFINE NYAD – Ultrafine Wollastonite, untreated
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    WOLLASTOCOAT® – Chemically Modified Wollastonite
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    Wollastonite 95 – special grades for ceramics applications
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    Zeolite Pet Litter

Raw Graded Perlite

Perlite is a volcanic glass formed when lava cools very rapidly, trapping small quantities of water. After mining, crude perlite rocks are crushed, dried, milled and screened to different grades. When graded perlite is heated to about 900ºC, the material undergoes its expansion process; the trapped water vaporizes and creates countless tiny bubbles in the softened glassy particles. In this process perlite expands 10-20 times its original volume changing from a rock to a lightweight material with cellular granules of porous nature.

A specific granulometry and special qualities are selectively chosen by Imerys according to the end market need for the Raw Perlite production. The procedures followed during this production are strictly controlled in order to ensure a material of high quality with uniform and unique properties.

Imerys provides more than 100 raw graded perlite solutions of various Imerys origins according to customer needs. Especially for cryogenics, the perlite grades applied are worldwide reference materials.

Please contact us to find out more about our offerings.