The work principle of inclined pipe and setting device is analyzed, the feasibility in reforming sludge pit by shallow layer settling technology is approached.
分析了斜管沉淀装置的工作原理，探讨了应用浅层沉淀技术改造捞坑的可行性。
The countryside around Xinfeng is dotted with hundreds of small open-pit mines into which miners pour water and chemicals, producing a sludge rich in rare earths.
在信丰周边农村，数百家小型露天稀土矿星罗棋布，矿工们正在往矿石上泼洒水和化学制剂，从而产生一种富含稀土的油泥。
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