Binders



Silicates are used to bind particles together in applications such as briquetting, pelletizing, agglomeration and coatings. The particles can range from very fine powders, such as flyash, to much larger gravel-sized aggregates.

As in paper adhesives, the dehydration of a liquid silicate results in a strong bond, hardening as it dries.  Setting agents that react with the liquid silicates may also be used to obtain binders that set faster and are water-resistant.  Applied heat will also increase water resistance by driving off excess moisture.

How It Works
Silicate is a water-based polymer of silica.  As the silicate binder is dehydrated, the silicate thickens and forms a sticky glue to coat and bind surfaces and particles in briquetting, pelletizing, agglomeration, and coating applications.  Liquid silicates may also be mixed with setting agents for fast-setting and water-resistant bonding.  Powdered silicates are useful for formulating and for product transfer prior to dissolving to prepare the liquid silicate binder.  
Recommended Literature
Applications
Agglomeration

Briquetting

Pelletizing

Foundry Molds and Cores

Refractory Cements

Welding Rods
Health, Safety &
Environment
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