Fine sand recovery

Fine sand recovery plants are smaller plants designed to make optimum use of the available raw material. This type of construction is used in existing and new treatment plants. In recent years, we have specialized in this area and offer solutions for every application.

Specifications

For structural reasons, fine sand losses often occur at devices such as scoop wheels, sand traps and aquamators. Instead of selling the fine sand as a product, it is fed into the rinsing field and then has to be dredged at great expense. In addition, changes in the law and delays in approval are leading to a shortage of the raw material, which is causing the market price to rise.

For these reasons, the performance field of fine sand recovery and the resulting optimal utilization of raw materials has come to the fore for producers in recent years. In most cases, the investment in fine sand recovery pays for itself within a short time.

Fine sand losses occur at the overflows of the above-mentioned devices. On the one hand, the entire overflow is collected in a pump feed container and the fine sand is fed to the dewatering system via a pump/cyclone combination. On the other hand, partial currents can be used, particularly with scoop wheels, by making small modifications.

This improves the settling behavior in the scoop wheel and significantly reduces the loss of fine sand in the overflow. As only a small volume flow is processed via the pump/cyclone combination in this application, this variant offers an energy advantage. The existing infrastructure is optimally integrated through planning that is adapted to the structural situation. To minimize system downtime during installation, all components are supplied pre-assembled wherever possible.

The following products are used for fine sand recovery: