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January 25, 2011

For over 60 years, Dicalite has been engaged internationally in the manufacture and sale of

diatomite filter aids and fillers. Emphasis on customer service has proven to be the most

important driving force in the company's ability to produce high performance filter aids. Diatomite

has been used as a filter aid for nearly a century. The ore is a soft, friable siliceous mineral. It is

composed of the skeletons of microscopic plants deposited on the bottoms of oceans and lakes

after and during the Miocene Age, from 100,000 to 15,000,000 years ago. Under the microscope

the particles of diatomite show up in a variety of forms: symmetrical figures resembling disks, rods,

cylinders and snowflakes. It is the shape factor combined with the rigidity of the particles that makes

Dicalite diatomite such an excellent raw material for the production of superior filter aids.


Diatomaceous earth is an amorphous form of silica containing a small amount of microcrystalline

material. Filter aids are processed at above 800 °C (1500 °F). Both calcined and flux-calcined

diatomite filter aids are free of organic matter and are non-adsorptive.


Dicalite diatomite filter aids offer outstanding performance from the finest to the coarsest

grades. These materials meet all requirements for good filter aids. This enables them to

meet the exacting clarity and flow-rate demands of industrial filtration. Even more important,

the user can depend on consistency and uniformity load after load.