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Introduction
- Fluorite
(also called fluorspar) is a mineral composed of calcium
fluoride, CaF2.
- Fluorite
is a mineral with a veritable bouquet of brilliant colors.
- Fluorite
is the most popular mineral for mineral collectors in the world,
second only to quartz.
- Fluorite
(Fluorspar) is an ionic solid that comprises its constituent
elements (calcium and flourine) arranged in the cubic system of
crystal symmetry.
Technology
- The
rapid progress that is being made in lithography and many
other areas of technology owes a lot to calcium fluoride
crystals.
-
L-series telephoto lenses utilize Canon's UD glass to
minimize the effect of chromatic aberration, sometimes
called colour fringing.
- A
single fluorite element has the corrective power of two UD
glass elements, which gives these L-series lenses their
spectacular performance.
-
Fluorsilicic acid is produced in large quantities as a
by-product during the production of phosphoric acid for
fertilizer manufacture and is used as a source of fluorine
in some parts of the world.
Production Process
-
Fluorspar is mined by both underground and open-pit
methods.
-
Fluorspar ores are commonly blended prior to use in
order to maintain a constant feed grade to the
beneficiation plant.
- To
obtain grained synthetic fluorspar calcium fluoride,
slurry is calcinated in a rotary kiln at temperature
900–1100K.
Market
-
Hydrogen Flouride production is the largest market
for acid - grade fluorspar, accounting for over half
of world consumption.
-
The
majority of fluorspar is used in the production of
hydrofluoric acid, followed by use for aluminum
smelting and steel manufacturing.
-
The
main production of fluorspar is however, confined
only to two areas: at Amba dungar in Baroda district
of Gujarat and at Mando-Ki-Pal in Dungarpur district
of Rajasthan.
Uses
-
Fluorite is used instead of glass in some high
performance telescopes and camera lens elements.
-
It is used as a flux in iron smelting.
-
The majority of the United States’ annual
consumption of fluorspar is for the production
of hydrofluoric acid (HF) and aluminum fluoride
(AlF3).
-
It is also used in the manufacture of uranium.
-
CaF2 is also used extensively for laser windows
at UV wavelengths.
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