Innovative developments in sand reclamation technologies
Innovative developments in sand reclamation technologies
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作者：
R. Dańko
旧型砂和芯砂的再生被定义为废耐火材料的处理，允许回收至少一种性能类似于新组件的性能的组件，并将其重新用于铸造模具和型芯生产。在传统的以高硅砂为基础并添加粘结剂的铸模和型芯生产技术中，再生主要是砂的回收，很少回收砂和膨润土。传统的再生技术并不总是足够密集，以释放硅基从用过的胶凝材料的信封，因此，新的创新方法进行了研究，以提高再生效率。这些方法是：创新的热回收和创新的机械-低温回收1，2。
Reclamation of used moulding and core sands is defined as a treatment of waste refractory materials allowing to recover at least one component of properties similar to the properties of the new component and to reuse it for casting moulds and core production. In traditional technologies of casting moulds and core production on the basis of high-silica sands with binding agent addition, the reclamation consists mainly of a sand recovery and very seldom of a sand and bentonite recovery. Traditional reclamation technologies are not always enough intensive to liberate silica basis from the envelope of used binding material, thus new innovative methods are investigated to improve the reclamation effectiveness. This methods are: innovative thermal reclamation and innovative mechanical-cryogenic reclamation 1, 2 .