摘要
湿型旧砂进行再生处理的目的是要减少原砂消耗量和废砂排放量。有些铸造工厂采取较简单的再生方法将旧砂的泥分降低，从而保持型砂泥分含量稳定。另一种铸造工厂生产多砂芯铸件，为了减少旧砂溢流量，将旧砂深度再生处理后用于代替原砂混制树脂砂芯用砂。凡是含有钠化膨润土的旧砂不可用高温焙烧再生方法，否则不适合制备热芯盒和冷芯盒砂芯。
The aim of used sand reclamation is to decrease the base sand requirement and the waste sand displacement. Some foundry shops are using rather simple equipments to reduce the clay content of used sand, for stabilizing the clay content of green molding sand. Other foundries with a great quantity cores reclaim the used sand to substitute the new sand making cores, to reduce the overflowing used sand. The used sand containing sodium carbonate cannot be thermal reclaimed with high temperature, since its alkaline property is unsuitable to make hot box and cold box cores.
出处
《铸造工程》
2007年第3期1-7,共7页
Foundry Engineering
关键词
旧砂再生
型砂含泥量
壳芯
热芯盒砂芯
冷芯盒砂芯
Reclamation of used sand
Clay content of molding sand
Shell core
Hot box core
Cold box core
