论文部分内容阅读
水力清砂旧砂再生,一般是采用热气流烘砂或烘砂滚筒进行干燥后回用;个别工厂采用水力提升机或机械方法,将砂浆提升到空地上待水分降低后回用;比较好的是采用脱水斗自然脱水,然后再用皮带机等运送到混砂机上方利用。对于水玻璃砂及双快水泥砂等要求含水量很低的型砂,旧砂再生采用烘干方法是必要的,但对于一般粘土砂,在旧砂回用时,就不一定烘干,尤其对于粘上干模型砂,烘干只能增加设备,消耗能源。如河将水分较大的再生
Recycling of old sand with hydraulic sands is generally carried out by hot air drying or drying by sand drying drums. Some factories use hydraulic elevators or mechanical methods to lift the mortar to open space and wait for the water to be reduced for reuse. Is the use of dehydration bucket natural dehydration, and then use the belt conveyor to the top of the sand mixer utilization. For the water glass sand and double fast cement sand and other requirements of low water content of sand, the old sand regeneration drying method is necessary, but for the general clay sand, the old sand reuse, it is not necessarily drying, especially for the sticky On dry sand model, drying can only increase equipment, energy consumption. If the river will be larger water regeneration