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Technical Briefs

Slurry Pump Impeller Wear: Testing

[+] Author and Article Information
Veselin Batalović

Faculty of Mining and Geology, University of Belgrade, 7 Djušina, 11000 Belgrade, Republic of Serbiabatalovic@rgf.bg.ac.rs

J. Tribol 132(3), 034503 (Jul 21, 2010) (5 pages) doi:10.1115/1.4001784 History: Received December 19, 2008; Revised May 09, 2010; Published July 21, 2010; Online July 21, 2010

Erosion wear is a process that accompanies the facility for hydraulic transportation of solids. Since the pump is one of the vital parts of this facility, the working life of the pump is conditioned by the amount of wear. The working life can be realized only if the parameters chosen, for the pump elements, slurry, and transport conditions, will provide economic transport with minimal wear. Testing is the most reliable method for acquiring valid data. The two issues that need to be solved while planning the testing process are the choice of valid similarity criteria (test-industrial facility) and data selection. After the theoretical analyses, technically acceptable similarity criteria are obtained. A group of data needs to be defined through the experiment.

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Copyright © 2010 by American Society of Mechanical Engineers
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Figures

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Figure 1

Slurry pump impeller, after 250 h of works (Suva Ruda Mine-Raska, Serbia)

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Figure 2

Impeller cross section: (a) particle path (velocities and accelerations), (b) impeler, wear (I-ds<dg; II-ds>dg; III-ds=dg), and (c) velocity triangles

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Figure 3

Testing plant: (1) Tank V=1 m3. (2) Suction pipe ∅150 mm. (3) Pump 50/32C. (4) Pipe ∅100 mm. (5) Test pipe ∅100 mm. (6) Test pipe ∅100. (7) Test pipe ∅80. (8) Test pipe ∅50 mm. MA1, suction pressure; MA2, discharge pressure; MA3, flow; MA4, differential pressure; MA5, specimen wearing; and MA6, measuring of power.

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Figure 5

Impellers blade, wearing of the external opening: (a) After 50 h of works. (b) After 300 h of works. (c) After 600 h of works.

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Figure 6

Intensity of wear, impeller

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Figure 4

Loss of the impeller mass

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