| 摘要 |
<p>Scrap material is comminuted and thoroughly mixed together in a first step before being mixed with water and cement in a second step. The cement mass is then pressed through holes in a disc to produce rod shaped material with an increased temperature. In a fourth step the material is cooled and broken up. The fifth step involves encapsulating the particles in water glass and after setting encapsulating in a water-cement mixture. The sixth step involves encapsulating again in water glass and then encapsulating in a sand, cement, water mixture to produce the pellets which are allowed to harden in the final step in air.</p> |
