| 摘要 |
<p>A method for the manufacture of very low density mineral wool structural panels on a moving foraminous support wire (40) by frothing a dilute aqueous dispersion of mineral wool. The froth, a mass of delicate, non-resilient and non-uniform bubbles among the entangled mineral wool fibers readily breaks, is stripped of water and dried without substantial loss of the highly open, porous structural configuration by a first controlled rate of maturation dewatering is rapidly stripped of remaining water and dried by passing high volumes of heated dry air through the structure with continued vacuum. The drainage water may be recycled in the process to maintain a low level of binder and any frothing aid additions.</p> |
