Process for separating mineral wool fibers from nonfibrous materials
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United States of America Patent
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Mar 10, 1981
Issued Date -
N/A
app pub date -
Apr 27, 1977
filing date -
Feb 13, 1975
priority date (Note) -
Expired
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Abstract
A process is provided for the separation of nonfibrous material from mineral wool fibers which comprises dispersing the fibers in an aqueous solution comprising a surfactant having at least one hydrophobic group containing at least eight carbon atoms and at least one cationic hydrophilic group having at least one nitrogen or sulfur atom, such as a quaternary ammonium surfactant. The fibrous material is dispersible in the surfactant solution, while the nonfibrous material is not and consequently can be separated by centrifuging or settling and decantation.
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