FATA Aluminum
6050 Nineteen Mile Road Sterling Heights, MI 48314 Tel: 248-426-4440 Contact: Giorgio Donini Email:
gdonini@fataaluminum.com Website:
www.fataaluminum.com
Termal Foundry Sand Regeneration Systems: Compact Rec, Eco Rec and Hot Rec
Dimensions: From a minimum of about 10 x 25 x 20 ft. (Compact Rec), to a maximum of about 25 x 50 x 55
ft. (Hot Rec). Capacity Range: Compact Rec: 0.5-2 tons/hour; Eco Rec:
1-5 tons/hour; Hot Rec: 5-12 tons/hour. Key Attributes: The systems feature high thermal efficiency, low energy consumption with heat recovery, and easy operation. They can be used to reclaim core sand (coldbox, hot box, shell and others), green sand and
nobake sand. In Operation: The systems operate on the fluid bed principle. A screw conveyor carries a metered amount of sand into a cylindrical calcination chamber with insulated walls and a stainless steel base plate. The base plate features fluidization nozzles placed together with gas feed pipes on the same axis. Air and gas are mixed together inside the combustion chamber. The sand then passes into the final cooler, which is composed of a fluid
Gudgeon Thermfire International, Inc.
420 Neptune Crescent London, Ontario, Canada N6M 1A1 Tel: 519-451-5320 Fax: 519-453-8753 Contact: Brent Gudgeon, Bill Gudgeon Email:
brentg@gudgeon.on.ca Website:
www.gudgeon.on.ca
TF-12000 Termfire Termal Sand Reclamation System
Dimensions: 21 x 12. x 16.5 ft. Capacity: 6 tons/hour. Key attributes: Gudgeon Termfire International now offers
new low NOx burners to pass new, stringent stack testing laws. Te reclamation is performed entirely in one machine and can reach working temperature for processing sand from a cold start in 25 minutes. Te system features two sources of heat recovery, making it thermally efficient and minimizing
natural gas usage. In Operation: Te sand feeds into the calcining chamber and is elevated to a temperature of 1,300F (704C) using an indi- rect firing method that allows for lower operating tempera- tures. Te temperature is controlled by a thermocouple that feeds data to the PLC, which controls the motorized valves in the gas supply lines. Direct spark ignition and flame rods
22 | MODERN CASTING October 2011
on the burners detect flames when burning the gas mixture. Te thermally reclaimed sand passes over a weir from the calcining chamber into the sand transfer box, which moves the sand to the cooling bed below. Te sand temperature is reduced to 85F (29C) on discharge as fluidizing air travels through it to dissipate the heat into a water cooled heat exchanger. A water tower, pneumatic sand transporter and dust collector also are supplied.
bed chamber equipped with a circulating water tube nest. After exiting from the final cooler, the sand passes over a vibratory screen that eliminates any remaining impuri- ties. The systems operate with different heat recovery methods. The Compact Rec and Hot Rec systems have an internal heat recovery, where a concurrent flow of combustion air passes through the regenerated sand, cooling the sand while heating the combustion air. The Eco Rec system has an external heat recovery, where the fumes exiting the furnace are cooled, preheating the combustion air. The process for green sand is similar, with the addition of a mechanical treatment.
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