中文摘要：

锰结核泵是深海采矿扬矿系统中的关键设备,为了研究泵结核矿浆工作性能,在实验室构建了一套高30 m、内径204 mm,可提供最大管网阻力2.5 MPa的泵矿浆性能试验系统,采用不同模拟结核粒径进行了泵矿浆工作特性试验。试验结果表明,锰结核泵基本上达到了预期设计指标,分析了模拟结核粒径d≤50 mm矿浆回流试验泵流道堵塞的原因,初步讨论了锰结核泵的环形格栅通道和泵流道问题,可作为我国中试多级锰结核泵的设计依据。

英文摘要：

Manganese nodules pump is the key equipment of deep ocean mining system. In order to study the working performance of the pump,a pump slurry performance test system,which is 30 m high with 204 mm diameter and can provide 2.5 MPa maximum pipe resistance,was constructed in the laboratory. Working characteristics of the pump with different particle sizes of simulation nodules were tested. The results show that the designed manganese nodules pump basically reaches the expected goals. Blockage causes for the particle size of d≤50 mm in reflux test are analysed. The problems of the annular grid runner section and pump flow channel for the manganese nodules pump are discussed preliminarily,thus providing the basis for the design of the pilot multistage manganese nodules pump.