| 摘要 |
<p>A method for separating mercurial waste from scrapped gas discharge lamp bulbs and other mercury-containing lamps. Expended, broken lamps are crushed in a crusher (11) and conveyed to a vibrating screen (13). The crushed material is shaken on a sieve-cloth (14) having a mesh width of 0.2-1.0 mm, preferably 0.25 mm, for at least 1-3 minutes. The major part of the crushed material remains on the screen and is removed therefrom as mercury-free waste (Hg-content < 10 ppm), whereas substantially all the mercury present is found in the finer fraction which passes through the screen.</p> |
