Abstract
A slurry pump is a device used to transport slurry, which is a mixture of solids and liquids. The slurry pump is subjected to physical erosion, generally resulting from erosion by friction between the solid and liquid particles. This study aimed to analyze the effects of process parameters on the erosion wear of a throat bush, which is the main component of a slurry pump. The erosion rate density (E) was analyzed based on the process parameters, that is, the slurry particle diameter, rotation speed of the impeller, and gap between the impeller and the throat bush. The discrete phase model (DPM) of the slurry pump was simulated using the process parameters. These parameters were optimized to minimize the erosion rate density. The optimization method using design of experiments (DOE) to derive a specific location with the greatest influence of the design variables through the one-way layout method and optimize the response value at that location is a method that efficiently analyzes a large number of cases. The optimization results confirmed that the erosion rate density was reduced in the optimization model compared with the earlier model.
Highlights
A slurry pump is a device used to transport slurry, which is a mixture of solids and liquids
This study aimed to investigate the erosion rate density of the throat bush via parameter optimization using discrete phase model (DPM) simulations and design of experiments (DOE) to reduce the erosion wear of the throat bush owing to the operation of a slurry pump
We applied a statistical method using the design of experiments method to derive the conditions for minimizing the amount of erosion of the pump
Summary
A slurry pump is a device used to transport slurry, which is a mixture of solids and liquids. Pagalthivarthi et al [5], predicted the flow field of a high-density slurry in a centrifugal pump casing under various work and geometric conditions and identified the physical causes of erosion. They demonstrated that the solid concentration of the slurry and the shear stress generated in the casing gradually increased from the upstream tongue region to the downstream navel region. In 2021 [9], they proposed the optimal hydraulic design to minimize erosive wear in a centrifugal slurry pump impeller They used an Eulerian–Eulerian mixture model to simulate the solid–liquid two-phase flow of quartz sand and water in a slurry pump.
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