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旧砂先经过500～900℃热法再生处理,然后冷却至150～300℃,再加入下图的圆筒设备中进行机械再生。设备有工作主轴,由电机驱动主轴旋转。主轴上装有三层摩擦棒,棒的外端旋转线速度为5～15m/s。旧砂由进砂管进入筒室内,主轴旋转,使砂处于浮腾状态,发生强烈搅料摩擦,使粘土与砂粒分离。底板上开有进气孔,压缩空气通过连接管进入筒室底,再经小孔进
The old sand is first subjected to a thermal regeneration process at 500-900 ° C and then cooled to 150-300 ° C before it is added to the cylinder apparatus shown below for mechanical regeneration. The equipment has a working spindle that is rotated by a motor driven spindle. The spindle is equipped with three layers of friction rods, the outer end of the rod rotational speed of 5 ~ 15m / s. The old sand into the barrel by the sand into the chamber, the spindle rotation, so that the sand is in the state of flooding, stirring strong friction material, the clay and sand separation. On the bottom of the open air intake, compressed air through the connecting tube into the cartridge chamber, and then through the small hole