Method and apparatus for the purification of oil-containing and water-containing roll scale sludge
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United States of America Patent
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Oct 12, 1999
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N/A
app pub date -
Mar 25, 1998
filing date -
Apr 16, 1997
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Abstract
In a method for the cleaning of oil- and water-containing roll scale sludge, the roll scale sludge is introduced to a heatable treatment region 10 for a first drying step. In addition to the first drying step, a second drying step is provided for with which the roll scale sludge is subjected to a vacuum drying 14, 15. For this reason, the purification of the oil-and water-containing roll scale sludge is improved without additional auxiliary materials using only pure thermal energy in an effective manner which is applicable to large-scale commercial applications.
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