{"id":6708,"date":"2026-10-06T05:40:31","date_gmt":"2026-10-06T05:40:31","guid":{"rendered":"https:\/\/www.pipetechservice.com\/?p=6708"},"modified":"2026-10-06T05:40:34","modified_gmt":"2026-10-06T05:40:34","slug":"slurry-separation-plants-for-microtunneling-sizing-stages-cost","status":"publish","type":"post","link":"https:\/\/www.pipetechservice.com\/fr\/slurry-separation-plants-for-microtunneling-sizing-stages-cost\/","title":{"rendered":"Slurry Separation Plants for Microtunneling: Sizing, Stages and Cost Drivers"},"content":{"rendered":"

A slurry separation plant sets the maximum sustainable advance rate of a microtunneling drive: the machine can only advance as fast as the plant removes solids.<\/strong> It removes excavated solids in stages defined by particle size, conditions the slurry back to its working density and viscosity, and returns it to the face. If it cannot process material as fast as the cutterhead cuts it, the machine slows until the two match. This guide shows how the plant is sized from the excavation, which stage removes which band, what bottlenecks throughput, and where the cost sits.<\/p>\n\n\n\n

This guide covers how a slurry separation plant is sized, the inputs that control the calculation, the separation stages and the particle size each one removes, the four components that in practice become the bottleneck, how to keep slurry density inside the working window, how an undersized plant announces itself in the field, and where the cost actually sits when the plant is specified line by line.<\/p>\n\n\n\n

\"Microtunneling
Figure 1. A staged separation plant on a microtunneling site. The configuration is decided by the ground: screening and desanding handle granular soils, while fines need cyclones, settling or chemical treatment.<\/figcaption><\/figure>\n\n\n\n

What Does a Slurry Separation Plant Have to Do?<\/h2>\n\n\n\n

A slurry separation plant has to remove excavated solids from the circulating slurry faster than the machine produces them, while holding slurry density, viscosity and solids content inside the window the face support system depends on. It performs four functions at once: separating solids from the excavation fluid, maintaining fluid properties, maintaining production without stopping the machine, and meeting the environmental and disposal requirements for the spoil and water it produces.<\/p>\n\n\n\n

Those four functions interact, which is why sizing cannot be treated as a pump-selection exercise. A plant that removes coarse material well but leaves fines in circulation will show a slow rise in solids loading in the slurry, and that rise is what eventually forces the operator to reduce the rate of progress.<\/p>\n\n\n\n

How Do You Size a Slurry Separation Plant?<\/h2>\n\n\n\n

Sizing starts from the excavation, not from the equipment catalog.<\/p>\n\n\n\n

The Seven Inputs That Size the Plant<\/h3>\n\n\n\n