Waste asbestos recovery from production of asbestos products

Details Waste asbestos recovery from production of asbestos products Waste asbestos recovery from production of asbestos products

1977-04-07

1978-12-26

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Recycling of reclaimed or purified process material

Of gaseous process material

162155, 264183, B29H 1900, D01F 1300

Patent

active

041316614

ABSTRACT:
Waste asbestos generated from a production process utilizing a surfactant as the dispersant and a coagulant as a solidifying agent is recovered for reprocessing by treating the waste with an inorganic acid to react with the precipitated surfactant and solubilize the precipitating ions. The precipitating ions are removed by washing. The insoluble residue, containing asbestos and the surfactant is mixed and reacted with an alkali to form a dispersion of asbestos that may be reprocessed by conventional methods.

REFERENCES:
patent: 1214931 (1917-02-01), Leduc et al.
patent: 1701110 (1929-02-01), Hofmann
patent: 2972221 (1961-02-01), Wilke et al.
patent: 3318983 (1967-05-01), Hovis et al.
patent: 3354028 (1967-11-01), Illingworth et al.

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