| 摘要 |
<p>Method for treating a used catalyst mass, which catalyst mass comprises aluminium oxide in the main. According to the invention, said catalyst mass is treated by calcining at 300 - 2200 °C, following which it is used as an additive or main component in any of the products: slag-forming agents in metal or welding wire production, covering agents in metal production, floor coverings, sand-blasting sand, polishing agents, abradants, cleaning agents or synthetic gemstones. The invention also relates to the use of a used catalyst mass in asphalt mixtures.</p> |
