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Paths

(March 16-25, 2012)

Edward Huff

Path to the World

Martin Hrdlička

Inside the Kiln

Prachovice, Pardubice Region, Czech Republic

March 17, 2012, 11:30

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© 2012 Martin Hrdlička, All Rights Reserved.

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Caption
Inside the rotary kiln used for the pyro processing stage of manufacture of Portland cement. In this place the temperature reaches 1,450 degrees Celsius.

These are the most important 90 meters of the long "path from stone to cement" where calcium carbonate reacts with silica-bearing minerals to form a mixture of calcium silicates.
More on http://www.virtualczech.cz or http://www.virtualholcim.cz (later)
Equipment
Safety helmet, safety glasses, safety dress, safety boots, safety guard and my camera and tripod.

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