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What is the thermal reclamation process?

Sustainability and efficiency are becoming paramount concerns within the industrial manufacturing sector. Nowhere is this more evident than in foundry operations, where the responsible management of resources and the reduction of waste are central to success.
One significant advancement in this regard is the thermal reclamation process, a method that breathes new life into used foundry sand, offering both economic and environmental benefits.

Reusing and Recycling Sand

Traditionally, used foundry sand would be discarded after a single use, leading to significant waste and environmental impact. However, with thermal reclamation, this sand can be rejuvenated and reintroduced into the manufacturing process, and minimizing waste.

How Does Thermal Reclamation Work?

So, how does thermal reclamation work? Let's delve into the details of this innovative process.
Thermal reclamation plants, such as those manufactured and distributed by industry leaders like Omega Sinto, are equipped with a range of specialised components designed to efficiently reclaim and restore used foundry sand. The process begins with the collection of used sand, which is then subjected to a series of phases.


Phase One

Firstly, the sand undergoes a process to bring it grain size, once done the sand is then processed to remove small contaminants including metallics, ensuring that it is free from impurities before entering the thermal reclamation unit. The sand is then precisely metered into the thermal reclamation unit, where it is exposed to temperatures reaching up to 650 °C.

Phase Two

Within the thermal reclamation unit, the sand is subjected to intense heat, which serves to burn off residual binder materials left over from previous casting operations. This thermal treatment effectively restores the sand to a suitable quality for reuse in moulding production, eliminating the need for costly disposal and minimising the environmental impact associated with traditional sand disposal methods.

Phase Three

Key to the efficiency of the thermal reclamation process is a heat recovery system, which extracts heat from the processed sand and returns it to the fluidised bed. This not only reduces energy consumption but also enhances the cost-effectiveness of the operation, making thermal reclamation an attractive proposition for foundries looking to improve their sustainability credentials.

OFML: Thermal Reclamation Systems

Omega Sinto offers a comprehensive range of thermal reclamation machines designed to meet the diverse needs of foundries seeking efficient sand reclamation solutions.
Omega Sinto's Thermal Reclamation System offers a patented Dead Bed design with a three-year guarantee on furnace linings, ensuring minimal maintenance and long-term performance. Equipped with a heat exchanger that recycles thermal energy from hot sand to heat the fluidising air, this system maximises energy efficiency while delivering reliable operation.

In Summary

In conclusion, the thermal reclamation process offers a solution to the challenges faced by modern foundries. By recycling and reusing used foundry sand, thermal reclamation not only conserves valuable resources but also reduces waste and environmental impact.
If you would like to find out more information about the thermal reclamation systems designed, manufactured and installed by Omega Sinto, please contact our team today - we're readily available by phone at +44 (0) 1733 232231, by email at [email protected] or through our online contact form.

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