Screw conveyor classifier for unburned slag – 36593

Screw conveyor classifier for unburned slag. The screw conveyor is designed to initially force material down into a water-filled bin, then elevate it using a separate screw rotor for transport and drainage.

The screw conveyor classifier is used for unburned slag in a waste burning plant.

The process is used to cool down material that have been through a heating process once, but have not been incinerated. To prevent smoldering or uncontrolled fires, the material is submerged in a water-filled bin for soaking and cooling.

What is a screw conveyor classifier in general

• A screw classifier is used to seperate or sort material, using a water filled compartment
• Materials to process in a screw classifier can be f.x. minor minerals, water cooled ash or slags from a boiler in a powerplant
• Different material, have different densities, which therefor can be sorted easier in a Water filled bin

Main features of this screw conveyor classifier

• The material will be forced down in an angle, by a smaller screw rotor. It will release the material underneath a water line. Another screw rotor will catch it and transport it upwards in an opposite angel for transport, sorting and drainage.
• The inlet house and transport pipe are designed water tight , as the water level will be approx. 2/3 of the height.
• There are several drainage, outlet points in the inlet house – flange bolted joints
• FAT test has been made, together with customer, with live test on site.

BEMA has made the design and assembly all together for the client to receive a complete and ready to run machine. The connection joints are specifically placed to make installation easy  with existing equipment on customers site.

In the design process BEMA has visited the waste burning plant and assisted in measuring on the existing location. This saves the customer cost for re-build and fitting, when the final machine arrives.

Follow this LINK to see other classifier solutions from BEMA A/S