No-Bake Sand Molding and Reclamation System

A resin sand production line is a complete system designed for preparing resin-bonded molding sand, widely used in sand casting for steel, iron and non-ferrous alloy castings. The line continuously mixes virgin sand, resin and hardener at preset ratios to produce self-hardening sand for mold and core making, while also incorporating a sand reclamation system to recycle used sand.

The typical process flow includes: raw sand storage and conveying → sand temperature conditioning → metered dosing of resin and hardener → continuous mixing → sand discharge for molding/core making → pouring and cooling → shakeout → used sand reclamation → dust collection → reclaimed sand recycling. The entire process is automatically monitored by a PLC control system.

The resin sand production line is suitable for furan resin self-hardening sand process, phenolic resin self-hardening sand process and ester-cured alkaline phenolic resin process, meeting production requirements from small-to-medium castings to large heavy castings.

The main equipment includes sand silos and conveying systems, sand temperature conditioners, dual/three-sand metering systems, resin and hardener metering pump sets, continuous mixers, vibrating shakeout machines, sand reclamation units (mechanical or thermal), magnetic separators, dust collection systems and a PLC central control system.

Our resin sand mixers are available in various models with sand output ranging from 5 tons/hour to 120 tons/hour, customizable based on the customer's actual production capacity requirements.

With a mechanical reclamation system, the recovery rate can reach 90%–95%; with a thermal reclamation system, the recovery rate can exceed 98%, and the Loss on Ignition (LOI) of the reclaimed sand can be controlled below 2.0%, fully meeting the requirements for high-quality casting production.

The entire production line is fully automated with PLC and HMI (human-machine interface) control, featuring recipe setting, flow monitoring, fault alarming and data logging functions. It is easy to operate, significantly reduces manual intervention and ensures consistent molding sand quality.

Through precision metering pumps (accuracy ≤±1%), real-time sand temperature control and online PLC monitoring, the resin addition, hardener addition and sand temperature of each batch are kept within set ranges, ensuring consistent sand strength, curing speed and bench life.

Daily maintenance includes regularly cleaning sand accumulation on the mixing arm and blades; checking the sealing and flow rate of resin and hardener pumps; periodically replacing wear parts (e.g. blades, liners); maintaining the dust collection system in proper operation; and regularly calibrating the metering system.

Resin should be stored in a cool, dry place away from fire sources and direct sunlight, with a recommended storage temperature between 5°C and 30°C. Hardener (e.g. sulfonic acid type) should be stored separately from resin, with anti-corrosion and leak-proof measures. Please refer to the Safety Data Sheet (SDS) provided by each supplier for specific storage requirements.

Please provide the following information and we will tailor a solution for you: annual or hourly production capacity requirements, main casting materials and weight range, existing workshop dimensions and height, preferred sand reclamation method (mechanical/thermal) and budget range.

Yes. We offer turnkey services from equipment installation, piping connection and system commissioning to operator training. Our engineers can go to the customer's site to guide installation and commissioning, and arrange training on system operation and maintenance to ensure a smooth production start-up.