Method and apparatus for the continuous extrusion of block elements
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United States of America Patent
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Nov 2, 1999
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N/A
app pub date -
Sep 9, 1996
filing date -
Sep 9, 1996
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Abstract
A method and apparatus is provided for the continuous extrusion of porous activated carbon block filter elements. The invention includes feeding material into the barrel of a screw extruder and heating the material therein such that the material becomes an agglomerated mass. The agglomerated mass is agitated and compacted into a die where it is cooled to a semi-solidified state. In the semi-solidified state, the material is passed through a cooling tunnel where the material solidifies and the carbon block filter element is formed. A back pressure control device is also included to control pressure in the die.
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