What type of pump is primarily used for lime slurries to prevent clogging?

The correct answer is a centrifugal pump, which is often used in applications involving lime slurries due to its ability to handle fluids with varying viscosities while providing a continuous flow. Centrifugal pumps utilize rotational energy to move the fluid, making them particularly effective for transferring fluids that are less viscous and can flow easily, such as lime slurries when properly mixed.

In the case of lime slurries, which can have solid components, it's crucial for the pump to maintain a steady flow and minimize the chances of clogging. Centrifugal pumps can effectively pump these slurries as they can handle a mix of solid particles and liquid without significant wear or blockage, especially when designed with the appropriate impeller and casing for this purpose.

For other types of pumps mentioned, while they have their own advantages in different scenarios, they may not be as suitable for lime slurries. Positive displacement pumps can handle high viscosity and slurries but may experience clogging if the solids within the slurry are too large. Diaphragm pumps, although capable of dealing with slurries, are typically better suited for applications requiring precise flow control rather than continuous large volume flows. Gear pumps excel in pumping viscous fluids but can struggle with sl