我厂砂处理系统是采用气力吸送和气力压送。按砂铁比2.15:1计算,吸送和压送新砂、旧砂、型砂共51.3万吨。铸铁中磷闸瓦的产量达8400多吨。现将整个循环过程和吸送、压送应用概况简述如下:一、型砂循环过程旧砂回收采用两次吸送处理,混好后的型砂则压送到造型机上的贮砂仓中。挤压出的铸型再经浇注、冷却、落砂、分出产品、吸回旧砂,这样,形 Our factory sand treatment system is the use of pneumatic suction and pneumatic pressure delivery. Sand iron ratio of 2.15: 1 calculation, suction and delivery of new sand, sand, sand a total of 513,000 tons. Cast iron in the production of phosphorus brake shoe amounted to more than 8400 tons. Now the entire cycle and the process of suction and delivery, pressure delivery application overview is as follows: First, the sand recycling process used sand suction twice, after mixing the sand is pressed to the molding machine on the storage silos. Extruded the mold and then pouring, cooling, falling sand, product separation, back to the old sand, so that the shape