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The
Industrial Minerals Association
Diatomite, also known
as diatomaceous earth, is the naturally occurring fossilized
remains of diatoms.
Diatoms are single-celled aquatic
algae. They belong to the class of golden brown algae known as
Bacillariophyceae.
Diatomite is a near
pure sedimentary deposit consisting almost entirely of silica.
The Greeks first used
diatomite over 2,000 years ago in pottery and brick.
There are many diatomite deposits throughout the
world, but those of high-purity which are commercially viable are rare.
The properties which
make diatomite valuable include low density, high porosity, high surface area,
abrasiveness, insulating properties, inertness, absorptive capacity,
brightness, and high silica content.
Diatomite has a wide
variety of uses, and is a component in hundreds of products, or vital to the
manufacturing process of thousands more.
Filter Aids: The most important use relative
of high-quality diatomite is as a filtering media.
The naturally
occurring fossilized remains of diatoms have innate filtering characteristics
due to their unique honeycomb structure.
Their filtering
qualities are used in beer and wine making, pharmaceutical manufacturing, motor
oil processing, and to filter swimming pool water.
For almost 100 years
diatomite has been the workhorse of food and beverage processing.
Almost every shelf in
the grocery store contains a product which has been filtered by diatomite.
Functional Additives: In paints, diatomite alters
glass and sheen, extends primary pigments, adds bulk and strength, controls
permeability and enhances coating adhesion.
In plastics,
diatomite serves as an antiblocking agent which helps in the separation of
plastic parts in manufacturing, and in the separation of plastic bags by the
consumer.
Absorbents: Due to such characteristics as porosity
and high surface area, diatomite is highly absorbent and is very useful in the
clean-up of spills in the automotive, industrial, janitorial and waste
remediation industries.
Soil Amendments: When diatomite is incorporated into
soil, it serves to reduce compaction, and increase water and air permeation.
It also increases
plant available water, firms soggy soils, loosens hard to work soils, provides
better drainage, aids in nutrient transfer, and improves root growth.
In such applications
as golf courses, and other landscaped areas it helps absorb and hold water,
reducing the amount of water used.
Natural Insecticide: When insects come in contact with
diatomaceous earth, it absorbs their protective wax coating and their shells
are damaged by the glassy diatoms. This combination causes them to die by
dehydration.
There is no survival
and no built-up immunity as there is with chemical insecticides. Also, it does
not break down as chemicals do.
Other examples of the
universe of products and uses which benefit from diatomite include dental
fillings, seed coatings, roofing compounds, adhesives, sealants, matches, oil
drilling compounds, specialty concretes, and paper.
The
Industrial Minerals Association - North America (IMA-NA) is the
representative voice of companies which extract and process a vital and
beneficial group of raw materials known as industrial minerals. Industrial
minerals are the ingredients for many of the products used in everyday life,
and our companies and the people they employ are proud of their industry and
the socially responsible methods they use to deliver these beneficial
resources.
IMA-NA represents ball clay, barite, bentonite, borates, calcium carbonate,
diatomite, feldspar, industrial sand, kaolin, magnesia, soda ash, talc and
wollastonite.
Industrial minerals . . . Your world is made of them!
Industrial minerals . . . Your world is made of them!
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