Dewatering big bowl decanter centrifuge for USA construction mud treatment

In a complete processing procedure for a construction mud treatment project, there are mainly 3 steps for separation. First one is a vibrating screen as the coarse particle separation. Second one is some cyclones for middle sized particle separation and the third one, the finest one, should be a horizontal decanter centrifuge. Here the decanter centrifuge is the key technology for deep and more thorough dewatering.

1. Technical principle of a decanter centrifuge used for dewatering purpose:

The decanter centrifuge generates a centrifugal force field through high-speed rotation (with a separation factor of up to 3000G) to achieve solid-liquid separation. Solid particles form a continuous layer and are discharged, while the liquid is directed out through an overflow weir. The processing capacity of a single machine can reach up to 50 tons per hour.

Applicable Scenario

2. Applications of vibrating screens:

High speed decanter centrifuges are use for fine particle separation. It can process ultra-fine particles ranging from 2-5μm, reducing the moisture content from 95% to 78%-85%, meeting the standards for slurry reuse.

The decanter centrifuge are also used for dewatering of slurry for cast-in-place piles: After dehydration, the sediment solid content reaches 70%-76%, and the volume decreases by 62%, significantly improving the on-site environment of the pile foundation.

With help of some chemical dosing units, decanter centrifuges can also be used for high-viscosity sludge treatment.

3. Practical features of decanter centrifuges:

In operation, decanter centrifuges are highly automatic. For example, GNLW series decanter centrifuges are integrated with intelligent system with a VFD control panel and a HMI touching screen, the program is smart to calculate the G force, rotating speed, and differential speed in order to achieve a most satisfactory treating result with changing material conditions.

Decanter centrifuges need a comparably smaller footprint. Compared to filter presses, the equipment occupies 60% less space, making it suitable for construction sites with limited space.

GN Decanter centrifuges are exported to more than 70 countries in the world and in the picture, you can see it is a construction jobsite in USA, using GN vibrating screen and GN decanter centrifuge with a big bowl.