混砂时如果型砂的含水量较低，更回显得相当干散和硬脆。
If the moisture content of molding sand with low sand, more very dry bulk and hard brittle.
经实践证明：回用的金属砂能满足生产要求，降低了生产成本。
The practice shows that recycled metal sand filter can meet requirements of production and reduce production cost.
解决了旧砂回用问题，具有显著的经济效益及社会效益。
It has solved the problem of reclamation of return sand, and it has remarkable economic as well as society benefits.
该粘合剂最大特点是能回用旧砂，回用的比例可达50%。
The best characteristic can be used in the complexed sand containing 50% old sand.
非完整反滤回灌井井流运动由砂反滤层的竖向流和非完整回灌井井流组合而成。
Vertical flow of the sandy filter layer and well flow of the common partially penetrating recharge well are combined to make a well flow of the partially penetrating recharge well with a filter layer.
洗车废水回用成套设备，一种通过混凝沉淀，砂滤等过程来解决洗车废水循环的设备。
Disclosed is a complete equipment for waste water reuse. The device solves the recycling of car wash water through processes such as coagulating sedimentation and sand filtration.
研究了锰砂过滤工艺在钢铁废水回用处理中除铁除锰的应用。
Application of coagulation-CAF air flotation-V filter process to the treatment and reuse of wastewater from steel works;
研究了锰砂过滤工艺在钢铁废水回用处理中除铁除锰的应用。
Application of coagulation-CAF air flotation-V filter process to the treatment and reuse of wastewater from steel works;
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