Lydall Performance Materials offers a filtration solution for the recovery of fine pigment powder by combining Lydall’s Solupor membrane with Limburg Filter’s Leaktite filtration technology.
Solupor is a porous, durable, chemical resistant, ultra-high molecular polyethylene membrane that produces very high-filtration efficiencies with low pressure loss. Current applications include liquid filtration in medical, biopharmaceutical, and water purification environments.
Leaktite is a filtration technology suitable for removal of liquids from slurries using a chamber filter press. It was first proven in the filtration of aqueous graphite dispersions followed by other applications in the chemical industry.
One of the major filtration issues in the recovery of pigments is that traditional filtration technologies require filtrate recycling – or so-called reflux – until a filter cake has been built up, resulting in a relatively inefficient process. By using the Solupor laminated membrane, the Leaktite filter is now able to provide a single-pass filtration option and increase the efficiency for the recovery of expensive pigments, eliminating the need for reflux.