In wet processing of mineral substances, proven methods are applied to separate solids from liquid. The liquid can be water or a standard supporting liquid used for tunneling (bentonite suspension).
Dewatering is the process of reducing the residual moisture in the solids.
Grainy fractions are dewatered by concentrating the solids in MAB Hydrocyclones type AT. Using special MAB underflow pockets reduces the residual moisture to as little as 30%. MAB dewatering screening machines can be used to reduce the residual moisture to 14%. However, the dewatering capacity depends primarily on the grain structure.
MAB dewatering screening machines are available in various sizes, the maximum flow rate being 500 t/h.
SCHAUENBURG MAB develops various methods and equipment to separate excavated soil from the bentonite suspension in tunneling. Because of the high dewatering grade of the separated, bentonite loss is minimized.
Systems with capacities of 50 to 5000 m³/h are used for the various separation applications.
The equipment design depends on the respective operation:
- Open design
- Open design but "enclosed" (inside building)
- Container design: 30’/40’ containers, usually noise- and heat-insulated, are "stacked" as modules