Characteristics:

Fluorspar is a common, relatively soft, isometric mineral primarily used for its fluorine content, which makes it valuable for a lot of technical applications.

Processing:

Most fluorspars need upgrading. Simplest is hand-sorting, crushing, screening followed by gravity concentration. Heavy media cone and drum separators suitable for coarse sizes from 0.5 to 3.8 cm. For finer size, heavy media cyclone processes are used. Further methods are heavy media and froth flotation.

Sources:

Fluor spar distributed by Scheruhn Industrie-Mineralien origins from China. Other countries to mine fluor spar are Mexico, Mongolia, Russia, South Africa and USA.

Applications:

Used as a flux in the ceramic body, lowering the melting temperature. It's also used to produce hydrofluoric acid and as a base material for optical lenses and opalescent glass.

Specification - Fluor spar Acid Grade:

CaF2	min. 97.00 %
SiO2	max. 1.00 %
CaCO3	max. 1.00 %
Total Sulfur	max. 0.03 %
Sulfide Sulfur	max. 25 ppm
P2O5	max. 0.03 %
AS	max. 3 ppm
Organic parts	max. 800 ppm
Humidity	max. 10.00 %
Grain size: < 100 mesh	min. 80 %
Loss on ignition	1.5 % (min/max: 0.5 % / 2.5 %)

Bibliography:

• Wikipedia, version 4. March 2009
• Manufacturer's data

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