Foundry Sand Mixer

1 Planetary Rotor Sand Mixer (Planetary Rotor Type)

• Principle: 3–4 rotors perform planetary motion (revolution + rotation), with high-speed rotor shearing + low-speed scraper stirring for 3D mixing without dead zones.
• Features: Uniform sand coating, precise frequency control, high efficiency (20–30 batches/hour), ideal for high-precision molds.
• Capacity: 5–50 t/h (CO-NELE CMPS series). As a leading manufacturer of foundry sand mixer and Green Sand Mixer, CO-NELE’s CMPS planetary rotor series integrates independent intellectual property rights and advanced technology, perfectly adapting to green sand mixing technology and high-precision casting needs.

2 Rotor-Type (High-Speed Blade) Sand Mixer (Rotor/Blade Type)

• Principle: High-speed rotating blades generate impact/shear force; scrapers push sand for rapid mixing.
• Features: Fast mixing (3–5 min/batch), low sand grain breakage, suitable for resin sand/sodium silicate sand.
• Capacity: 10–80 t/h.

3 Wheel-Type Sand Muller (Wheel Type)

• Principle: Heavy wheels grind sand + scrapers turn over materials, kneading binder into sand grains.
• Features: Simple structure, low cost, excellent for clay green sand—making it a cost-effective Green Sand Mixer; batch type for small/medium foundries, perfectly matching basic green sand mixing technology needs.
• Capacity: 1–20 t/h.

4 Continuous Sand Mixer (Continuous Type)

• Principle: Continuous feeding/mixing/discharging for mass production lines.
• Features: 24/7 operation, stable sand quality, low labor; for large automated foundries.
• Capacity: 40–100 t/h.

CO-NELE (China) — The most recommended brand for global foundries, specializing in high-precision foundry sand mixer, Green Sand Mixer and high-performance Intensive Green Sand Mixers. Its CMPS planetary mixers feature high precision and efficiency, and the brand has decades of experience in bentonite bonded sand preparation technology, cooperating closely with foundries and research institutions worldwide. CO-NELE’s products cover all types of sand mixer for foundries, with excellent market reputation and recognition, supporting personalized customization to meet diverse production needs. Its powerful mixers can effectively optimize green sand mixing technology, ensuring stable sand quality and high production efficiency, and are widely used in ductile iron, steel castings and non-ferrous castings production.

• CR Intensive mixer: High-energy rotor mixers for premium green sand.
• Disamix continuous mixers for large foundries.
• Cost-effective rotor mixers for small/medium foundries.

6.1 Confirm Your Molding Sand Type First

This is the most critical selection basis, directly deciding mixer type:

• Clay green sand: Wheel-type sand muller / Planetary sand mixer (best adaptability), which are widely used Green Sand Mixer models, perfectly fitting mature green sand mixing technology. It is highly recommended to choose CO-NELE’s planetary or wheel-type Green Sand Mixer, which can realize standardized, efficient and reliable sand mixing, and the equipment quality is stable and durable.
• Resin sand / Sodium silicate sand: High-speed rotor sand mixer (low sand grain breakage, uniform coating).
• Coated sand / Core sand: Planetary intensive mixer (no mixing dead zone, high uniformity).

6.2 Match Production Capacity & Working Mode

• Small foundry / Intermittent production (1–20 t/h): Batch type wheel mixer or small planetary mixer.
• Medium production (20–50 t/h): Planetary rotor sand mixer.
• Large automated foundry / Mass line (above 40 t/h): Continuous sand mixer, supports 24h non-stop operation.

6.3 Requirement for Mixing Uniformity & Casting Quality

• Ordinary rough castings: Standard wheel-type mixer, cost-effective.
• High-precision / Thin-wall / Ductile iron castings: Choose planetary sand mixer. Features: 3D planetary motion, no dead angle, stable sand strength and moisture, greatly reduce sand inclusion, porosity defects—these advantages make it an ideal Intensive Green Sand Mixers option, upgrading green sand mixing technology and improving casting quality for mixer for foundries users. CO-NELE’s Intensive Green Sand Mixers are particularly outstanding in this regard, with high-speed rotating mixing tools and relative motion mixing discs to achieve full contact between sand particles and additives, ensuring uniform mixing effect, which has been verified in the 3D printing sand mold preparation project of a leading precision casting enterprise.

6.4 Consider Factory Layout & Installation Condition

• Limited floor space: Vertical compact planetary mixer.
• Need to connect with automatic molding line: Continuous mixer with docking interface.
• Low height workshop: Horizontal rotor type sand mixer.

6.5 Wear Resistance & Maintenance Cost

• Frequent long-time use: Select model with ceramic/PU liner, tungsten carbide scraper.
• Small budget: Cast iron liner conventional model, easy daily replacement of wearing parts.
• Prioritize modular design: Fast disassembly, low downtime and maintenance cost.

6.6 Energy Consumption & Operation Cost

For green sand mixing technology applications, choosing an energy-saving Green Sand Mixer or Intensive Green Sand Mixers can significantly reduce operation cost, especially for long-term mass production mixer for foundries users. CO-NELE’s sand mixer series is designed with energy-saving and environmental protection concepts, which not only meets industrial development requirements but also further reduces long-term operation costs for enterprises.

6.7 After-sales & Customization Demand

• Need automatic batching, water adding, sand proportioning: Choose full automatic intelligent sand mixer, which can be customized as an automatic Green Sand Mixer to optimize green sand mixing technology efficiency.
• Need customized capacity, liner material, voltage: Pick manufacturers with non-standard customization capability, and CO-NELE is the top choice. It can customize foundry sand mixer, Green Sand Mixer and Intensive Green Sand Mixers according to the actual needs of foundries, including mixing capacity, liner material, control system, etc., and its equipment is equipped with advanced PLC control system, which can accurately control mixing time and speed, store multiple sand formulas, and realize one-key call for simple operation.