Twin Screw Feeder and Hopper for Shredded Circuit Board

General Description

Electronic waste processing encompasses the systematic collection, disassembly, and material recovery from end-of-life electronic devices, transforming discarded equipment into valuable commodity streams while minimizing environmental impact. Advanced shredding systems provide comprehensive solutions for diverse electronic waste streams, delivering efficient and environmentally responsible processing capabilities.

This approach to e-waste management enables the recovery of precious metals, rare earth elements, and other valuable materials that would otherwise be lost to landfills. Through sophisticated processing techniques, operations can achieve significant resource conservation while reducing pollution and supporting circular economic principles for a more sustainable future.

KWS provides conveying and processing equipment to many different segments of the recycling industry. Storage and metering of recycled bulk materials is a typical part of a comprehensive process. Specifically for electronic waste recycling, KWS supplied a large hopper with twin screw feeder to store and meter shredded circuit board to the separation process.

Hopper and Twin-Screw Feeder Provide Storage and Accurate Metering of Shredded Circuit Boards for Processing

Design Parameters

Product Type: Shredded Circuit Board
Design Temperature: Ambient
Material Density: 60 Lbs. per Cubic Foot
Capacity: 200 Cubic Feet per Hour
Duty: Intermittent

KWS Advantages

With more than a thousand installations in the recycling industry, KWS brought extensive expertise to the project. Our engineering team worked together with client engineers to ensure the hopper and screw feeder system fit perfectly within existing spatial constraints while maintaining precise alignment with connecting equipment upstream and downstream.

During the design development process, KWS provided detailed Autodesk Inventor 3D models alongside comprehensive 2D technical drawings. This multi-dimensional approach enabled early identification and resolution of potential design conflicts or interference issues before fabrication began. The result was a streamlined installation process that minimized downtime and delivered reliable, long-term performance.

KWS Special Features

KWS developed a specialized hopper system featuring integrated twin screw feeders mounted beneath to collect shredded circuit boards from an existing belt conveyor. The hopper design incorporated a dedicated side opening that allowed the belt conveyor to discharge material directly into the hopper chamber. To meet operational requirements, KWS utilized advanced 3D modeling techniques to verify the hopper’s usable capacity of at least 350 cubic feet. This volumetric analysis accounted for the material’s angle of repose characteristics, ensuring accurate capacity and reliable performance under normal operating conditions.

KWS twin screw feeders utilized stepped pitch design positioned directly below the hopper to achieve accurate bulk material flow. The screw feeder was specifically designed to handle peak material flowrate with variable frequency drives (VFDs) capable of 10-to-1 speed reduction, delivering exceptional operational flexibility across a wide capacity spectrum.

The KWS direct-drive gear motor configuration provided a streamlined design and compact footprint eliminating the need for belt or chain drives, resulting in lower operational costs and reduced downtime. Each screw is driven independently creating completely redundant systems.