Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1989-05-15
1992-06-23
Spear, Frank
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
2105021, 210507, 210767, 264 291, B01D 3702
Patent
active
051240408
ABSTRACT:
This invention discloses a process for making a refractory filter for liquid ferrous and non-ferrous metal with improved priming action. A carbonaceous resin onto the surfaces of a hard-fired ceramic or refractory cloth filter for liquid metal which protects the filter against abrasion and the absorption of water and also holds and protects particulate additives in place on the surface of the filter where they can later react with the liquid metal. When the liquid metal approaches and then touches the surface of the filter, the resinous coating chars. The resulting porous layer of mechanically strong carbon retards heat transfer from the hot liquid metal to the otherwise unheated filter, aiding the priming of the filter and also controlling the rate of dissolution of the particulate additives into the liquid metal. The preferred resin has a high char-forming tendency and a mechanically strong porous carbon coating on the filter when the filter is exposed to the hot, liquid metal.
REFERENCES:
patent: 3444276 (1969-05-01), Olstowski et al.
patent: 4627944 (1986-12-01), Murakami et al.
patent: 4985316 (1991-01-01), Bose et al.
Knothe Charles S.
Spear Frank
LandOfFree
Carbonaceous coating for refractory filters of liquid metals does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Carbonaceous coating for refractory filters of liquid metals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Carbonaceous coating for refractory filters of liquid metals will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-931081