现在普遍使用的混砂机及辅助设备的机械部分功能存在缺陷。这是Ashland化学公司A.J Otte和R.L.Smith,Esco公司的W.D.联著的粘土砂问题分析论文中提出的。其关键在于粘土加入和混砂机的控制缺少一自动全过程控制系统。这套控制仪器已被研制并投产使用。据介绍,这利控制系统每5秒钟监测和校正一次数据;粘土和原砂的温度由电信号监 The mechanical parts of the commonly used sand mixers and auxiliary equipment are deficient. This is a paper presented by A.D. Otte and R.L. Smith of Ashland Chemical Company, W.D. Associated with Clay Sand in Esco Corporation. The key lies in the lack of an automatic full-process control system for the addition of clay and the control of the sand mixer. This set of control equipment has been developed and put into operation. It is reported that this control system monitors and calibrates the data every 5 seconds; the temperature of the clay and the original sand is monitored by the electrical signal supervisor