Page 60 - Demo

PRODUCTION TECHNOLOGY60 PRODUCTION TECHNOLOGY AAC WORLDWIDE %u2022 2.2025In China, vertical pumps are more commonly used, mainly because the process predominantly adopts intermittent transportation and because more considerations are given to investment and maintenance. Although components of vertical pumps wear out relatively quickly, using mud pumps can still assist in meeting the requirements, albeit with relatively high efforts related to renewal and maintenance work. If a horizontal pump is used, intermittent operation will cause significant damage to the pump. Even if continuous transportation is adopted, if the flushing is not thorough when the pump stops, the pump may be damaged. Moreover, the only scenario where a horizontal pump is applicable is the slurry storage section. In accordance with the requirements of equipment configuration consistency, vertical pumps have gradually been adopted in China.In recent years, the suspended shaft vertical slurry pump has been developed. Since its drive and support system are not situated below the material level, the pump's service life and operational stability have been significantly improved, and the maintenance requirements have been greatly reduced. As a result, its application is expanding continuously.Slurry pump performance analysisThe performance of slurry pumps can be compared in terms of power, efficiency, and failure rate under the same flow rate, head, and caliber conditions. A comparison of several pumps with a flow rate Q = 90 m%u00b3/h, a head H = 25 m and outlet diameter ND = 100 mm is presented in Table 1.Fig. 2: Schematic diagram of the arrangement of slurry pumps in the slurry storage section. a) With a vertical pump installed.b) With a horizontal pump installed.