现在,开采砂矿床的矿山都装备有高效率的回采设备:安装在大牵引力拖拉机底盘上的推土机、电铲、铲运机、大斗容装载机。使用这些设备大大提高了开采效率,并扩大了所谓的非挖掘船开采法的应用范围。该法在很多情况下都比采用挖掘船较为有利。然而,由于选矿设备,包括矿砂提升和选矿尾砂清理(这些设备配套通常称为运选机组或称为洗矿设备)设备的供应问题,对非挖掘船开采法的应用效果产生了不利的影响。近十六、七年间,最大功率的洗矿设备 Now, the mines that mine the sand deposits are equipped with high-efficiency mining equipment: bulldozers, shovels, scrapers, large bucket loaders mounted on the chassis of large tractor tractors. The use of these devices has greatly increased the efficiency of production and has expanded the application of what is known as the non-dredged mining method. The law is in many cases more advantageous than the use of digging boats. However, the application of non-dredging mining methods has been adversely affected by the supply of equipment for mineral processing, including upgrading of ore and tailings cleaning (which are often referred to as operating units or washing facilities) . Nearly sixteen, seven years, the largest power of washing equipment