Sand Attrition Unit
The JOEST Sand Attrition Unit is a powerful and compact solution for the reclamation of chemically bound molding and core sand. In use at numerous foundries worldwide, the system is typically installed in sand reclamation plants between the Shakeout and the Sand Cooler – exactly where efficient sand reclamation is essential.
Thanks to its specially developed vibration mechanism, the Sand Attrition Unit reliably breaks down even strongly bonded sand agglomerates and makes a significant contribution to the quality and reusability of reclaimed sand.
Its robust design, combined with maintenance-friendly features, makes it the ideal solution for demanding production environments with high throughput.
Function
The sand lumps are fed into a specially designed attrition trough. There, linear, high-energy vibrations generate intense friction between the lumps, effectively breaking them down.
A conically shaped fines screen at the discharge end reliably separates the desired fine material from oversized particles. Non-breakable contaminants, such as casting residues, are automatically discharged via a pneumatically controlled rear discharge flap – without interrupting the process.
Technical Data
| No-Bake Sandsystem organic | |||||||
|---|---|---|---|---|---|---|---|
| 40% Lumps 60% Sand | 50% Lumps 50 % Sand | 100% Lumps 0% Sand |
|||||
| Thermal load | |||||||
| strong | moderate | Low | |||||
| Nominal width in mm | Drives 2 JX | Power (kW) | Weight in kg | Exhaust air in m³/h | Power in t/h | Power in t/h | Power in t/h |
| 500 | 2 x 1,6 | 1100 | 1200 | 6,2 | 5 | 2,5 | |
| 1000 | 2 x 2,8 | 1950 | 1800 | 12,5 | 10 | 5 | |
| 1500 | 2 x 4,0 | 2800 | 2500 | 18,5 | 15 | 7,5 | |
| 2000 | 2 x 7,0 | 3900 | 3000 | 25 | 20 | 10 |
Options
- Customizable to fit specific installation requirements
- Optional wear protection for sidewalls available
- Replaceable wear parts for minimal downtime
- Integration into existing sand reclamation systems possible
- Expandable with additional equipment such as sand coolers, separators, or conveying technology
Fields of Application
The JOEST Sand Attrition Unit is used wherever bonded moulding sand needs to be efficiently reclaimed and reused. It is particularly suitable for foundries operating Cold-Box, No-Bake or similar processes, ensuring reliable breakdown of sand lumps and thus making a significant contribution to quality assurance and process optimization.
Thanks to its compact design and high adaptability, the Sand Attrition Unit can be easily integrated into existing sand processing lines – from standalone machines to fully automated recycling systems.
Cold-Box, AOB or No-Bake processes
Ideal addition between shakeout grid and fluidized bed cooler
For systems with high requirements for sand purity and structural design
Equipment Options
The JOEST Sand Attrition Unit can be equipped with various options to optimally meet specific process requirements and plant conditions – for increased performance, longer service life, and easier maintenance.
Modular Wear Lining
Replaceable perforated plates made of highly wear‑resistant manganese steel – for long service life and easy maintenance with minimal downtime.
Adjustable Air Distribution Chambers
Flexible air flow control and uniform flow distribution for optimal adaptation to product, layer height and process requirements.
Customer-Specific Oversize Discharge
Flexible design of the oversize discharge optionally to the left or right – optimally adaptable to site conditions and plant layouts.
Advantages
The JOEST Sand Attrition Unit impresses with well-engineered technology and high operational reliability. Its clear advantages make it an economic solution for sustainable sand reclamation in modern foundries.
Your Material. Our Test Center.
Before being deployed in your production, our systems undergo comprehensive testing in our in-house technical center. There, we analyze your materials under realistic conditions and develop customized, application-oriented solutions.