Patent ID: 6136063
Filing Date: 2000-10-24
Classification: B01D,B09B,B09C,C03B,C22B,Y02P

Abstract:
A process for separating metals from solid wastes comprising the steps of:providing a hazardous waste material containing at least one volatile metal and at least one glass forming substance;heating said waste material in a direct contact radiant heating device to at least the fusion temperature of said at least one glass forming substance, said waste material being heated for a time sufficient for substantially all of said at least one glass forming substance to melt and form a molten glass, said waste material also being heated for a time and to a temperature sufficient to vaporize substantially all of said at least one volatile metal which is separated from said molten glass in a flue gas stream;filtering said flue gas stream in order to collect said vaporized metal; andcooling said molten glass, said molten glass comprising a glass that is substantially free of said at least one volatile metal.