| 摘要 |
The recovery of solid components of a suspension comprises the use of a moving band made of absorbent material, which forms part of the final product, that is dried after its pass through the suspension, gathered and eventually shredded. The solid components of a suspension are collected on a band (2), unreeled, passed horizontally through the suspension and then through a drier (11) from where it is reeled. The material of the band is absorbent and comprises recycled paper or various fibers. This band is eventually shredded to provide the final product, e.g. building plaster, so that the material of the band forms part of the product. The rate at which the band passes through the bath determines the amount of deposit and this can be regulated automatically by measuring the band thickness at a sensor (8). The band rises vertically out of the bath so that surplus fluid can drop back into it. The drier is heated by gas, oil or electricity, in the latter case preferably by microwave radiation. A temperature range of 60-80 degrees C is possible in the drier, i.e. low enough to prevent glazing of material such as plaster. Pre-drying squeeze rollers may be present. The suspension is maintained by a stirrer (14). The bath may be heated to prevent premature crystallization. |
