Exceptional Purity Levels for Sustainable Construction Materials
A pioneering company specializing in the development and manufacturing of equipment for the recycling industry has launched an innovative project in the Netherlands. The goal was to process burned soil as a valuable supplement for building materials.
This challenging application, primarily involving dust and ash from burned solids like earth and sand, requires ultra-fine screening at 60 μm (230 Mesh) with highest purity demands.
Soil is burned to eliminate harmful organic contaminants, pathogens, and invasive species, which otherwise render the soil unsuitable for construction purposes. By eliminating these impurities, the recycling industry transforms this cleaned soil into a valuable, sustainable raw material for building applications, contributing to a circular economy and meeting high environmental and safety standards.
To realize this transformation, the facility was designed to achieve high-precision separation with a throughput of 20 t/h. The fine grain size, along with the abrasive and corrosive nature of the material, and temperatures reaching up to 200°C, required advanced solutions. RHEWUM’s extensive screening trials proved successful, delivering machinery that achieves product purity of nearly 99% with a yield of over 85%. To meet these complex requirements, RHEWUM provided a combination of the RHEsono® screening machine and RHEmid feeder. These systems are engineered to ensure exceptional precision and operational efficiency.
RHEsono® Screening Machine: Precision for the Finest Materials
At the core of this project is the RHEsono® screening machine, designed for the most demanding fine grain separation tasks. Its direct excitation technology, combined with powerful electromagnetic drives, ensures high-frequency vibration that delivers accurate separation, even for the most demanding materials like burned soil. Despite the high performance, the RHEsono® screening machine operates with remarkable energy efficiency, transmitting vibration efficiently with a total power consumption of just 3.2 kW, making it a sustainable choice for large-scale operations.
To handle the fine, abrasive dust generated during screening, the system uses an efficient dedusting unit with an air consumption of 5,400 m³/h at a negative pressure of 1.2–1.4 mbar, ensuring a clean and safe working environment, even in continuous operation.
RHEmid Feeder: Uniform Material Flow and Efficiency
The RHEmid feeder guarantees uniform material distribution across the full width of the RHEsono screening machine. Its robust, static housing allows for secure, dust-tight operation with fixed flange connections, critical when processing abrasive, high-temperature materials. It is energy efficient, low maintenance, and equipped with two GeniusDrivePlus® motors featuring Industry 4.0 integration, allowing real-time monitoring via Bluetooth for predictive maintenance and early issue detection.
Are you looking for precision screening machines which achieve outstanding products purity while considering operational efficiency? Contact us for an individual consultation.
