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Powdered resins have a variety of uses in water treatment in several industries. They form a solid basis for many applications from nuclear power plants to more conventional uses. They can be delivered as a separate cation or anion as well as a ready-made mixture with the cation/anion ratio optimized specifically for your application.
One of the most important properties for powdered resin mixtures is floc-formation. When the resin particle size falls below 50 microns, the attraction forces between cation and anion increase considerably. In an aqueous suspension they form a bulky and porous floc occupying 3 to 8 times the volume of the original resin. The floc volume depends on the cation/anion ratio.
The ion exchange kinetics of powdered resin is up to 100 times faster than bead resins and the floc which they form acts also as an electrostatic filter.
Due to its porosity it can retain even the most highly divided colloids, insoluble corrosion products (crud) and charged particles (including ions). Removal of these particles is essential as they cause local deposit in steam-raising circuits which act as starting points for corrosion and damage. Powdered resins have excellent coating properties on precoat filter units and allow water to pass at high velocity without incurring a serious pressure loss.
Powdered resins work as a precoat either alone or together with inert fibrous material.