Verfahren zur Zurueckgewinnung von Wertstoffen aus Lackschlamm

摘要

PCT No. PCT/EP86/00258 Sec. 371 Date Jan. 8, 1987 Sec. 102(e) Date Jan. 8, 1987 PCT Filed May 2, 1986 PCT Pub. No. WO86/06657 PCT Pub. Date Nov. 20, 1986.A process is provided which proposes that the kinematic viscosity of the lacquer sludge is reduced to less than 100 cSt by adding to the sludge up to 50% by volume solvent and/or by heating it up to 60 DEG C., and that the content of solids of the liquefied lacquer sludge is reduced to less than 3% by volume first in a decanting centrifuge with a centrifugal acceleration of up to 4,000 g, and subsequently in a centrifugal separator with a centrifugal acceleration of up to 14,000 g.