| 摘要 |
<p>Ceramized surface granulates are described, obtained by mixing prevailingly inorganic industrial wastes of which one at least of toxic and harmful type and at least two of non-toxic and non-harmful type, milling of the obtained mixture, granulation, drying and treatment at a temperature of between 800 and 1300 DEG C, without any special additive, which do not release polluting substances even if milled and dipped into concentrated sulphuric or hydrochloric acid, useful in particular as filling materials in the production of concrete with high mechanical characteristics and of other cement articles.</p> |
