Resin Sand Processing Equipment

The resin sand processing equipment layout shall beappropriately formulated according to the casting plant layout, technologicproperty and production requirements. Its process flow is composed of used sandrecovery, used sand crushing and regeneration, used sand magnetic separationand screening, used sand air separation and thermoregulation, new sand system,(new) used sand storage, sand mixing, sand molding, core sand making, etc.

1.Used Sand Recovery
The used sand and scattered sand are conveyed to the sand silo by the conveyorafter their separation with castings and sand box through the shakeout. Themagnetic substance will be separated by the suspension magnetic separator,belt-type permanent-magnet separator and other magnetic separation equipment.

2.Used Sand Crushing and Regeneration
The sand lump in the sand lump silo is fed into the crusher evenly and quantificationally through the vibrating feeder, and willbe regenerated successively through the roasting furnace and regenerator aftercrushing and screening, and finally be conveyed into the heat sand silo by theconveyor. The magnetic substance will be separated from the used sand throughthe magnetic separation equipment. The used sand will have the preliminary coolingand dedusting through the induction fan and dedusting pipeline.

3.Used Sand Air Separation and Thermoregulation
The hot used sand containing micro powder is evenlyfed by the curtain type distributing device. The micro power is drawn out byair separator. The sand will flow into the sand temperature regulator and havethe heat exchange operation. Finally, the qualified used sand that can reachthe required temperature will be conveyed into the used sand silo by theconveyor.

4.New Sand System
The new green sand will be conveyed into the new sand silo by the conveyorafter being dried by the new sand drying system with three return strokes.

5.Sand Mixing, Sand Molding, Core Sand Making
After being matched in a certain ratio, the new and used sand will be mixedaccording to the technical requirements to produce the qualified molding sandthrough the self-hardening sand mixing machine. The qualified sand will then befed into the sand box or core box. After hardening, molding, mold modification,coating and surface drying, the qualified sand will be conveyed to the pouringprocess. After the castings are cooled to the required temperature, thecastings will have the shakeout operation, and the used sand will be recovered.