| 摘要 |
<p>Incinerator fly ash (FA) is mixed with small quantities of water of between 10 % and 35 % of its weight, the product being then compacted and extruded. In practice it is advantageous to add small quantities of lime to the water to have a pH of 7.4 to 11.6, it being possible for this lime to be combined with a product containing silica and/or alumina. Solid compositions which are practically insoluble in water and nonpolluting are obtained.</p> |
