| 摘要 |
<p>PURPOSE:To provide a material for absorbing mercury in gas with absorption efficiency enhanced by using an inexpensive lead concentrate and capable of maintaining the high absorption efficiency for a long period. CONSTITUTION:A lead concentrate is dipped in water and agitated, then sulfuric acid is added to activate the surface, acetic acid is added and agitated, then lead oxide is added, and hydrogen sulfide is blown into the liq. with the temp. adjusted to deposit PbS on the surface of the concentrate. The PbS pulp is adhered to pumice with the grain size controlled to form a mercury absorbent, and a material for absorbing mercuty in gas maitaining high mercury absorption efficiency for a long period as shown in the figure is obtained.</p> |
