| Popis: |
The paper studies the process adaptability of the complete reclamation for the used clay sand by countercurrent rotor reclamation, grinding wheel reclamation, air flow reclamation, and vibration reclamation, and found the complete reclamation process of the used clay sand by high temperature baking, reclamation and micro powder separation. Compared with the base sand, the completely reclaimed clay sand obtained by using countercurrent rotor reclaimer, grinding wheel reclaimer and air flow reclaimer has no change of the granularity distribution, lower mud content and higher acid demand value. And the use of vibration reclaimer can only obtain the incompletely reclaimed clay sand that has no change of granularity distribution and high mud content and acid demand value compared with the base sand. |
