Back to results
US 12,036,563 B2Granted
Process for separating mixtures of solids
AssigneeSolvay Specialty Polymers USA, LLC
InventorsMatthew Booher, Joel Pollino, Keshav S. Gautam
Life of this patent
Estimating the term…
Abstract
The invention pertains to a process for separating mixtures of solids based on their densities. The present invention also relates to the use of a separating liquid (L) for separating plastic solids from metal-containing solids based on their densities, wherein the separating liquid (L) has a density d3 such that 1.5<d3<2.0; wherein the solids have a particle size ranging from 0.1 to 100 mm. The separating liquid (L) is preferably a fluorinated fluid.
Claims11
A process for separating mixtures of solids based on their densities, comprising:
- a) bringing a mixture of at least one plastic solid and at least one metal-containing solid having two distinct densities d1 and d2, into contact with a separating liquid (L) having a density d3, distinct from d1 and d2, wherein 1.5<d3<2.0, wherein the separating fluid (L) is a fluorinated fluid selected from the group consisting of fluorinated polyethers, fluorinated alkyl polymers, and fluorinated heteroalkyl polymers and wherein the solids have a particle size ranging from 0.1 to 100 mm;
- b) separating the at least one plastic solid from the at least one metal-containing solid by a density separation;
- c) optionally repeating steps a) and b).
Dependencies are inferred from the claim text.