Suppl. DF-M3 page 2
FIRING SCHEDULE FOR LOW CEMENT CASTABLES:
FIRING SCHEDULE FOR INSULATING CASTABLES:
11 hour ramp from 60°F to 600°F (50°F per hour) X 1 hour soak at 600°F 12 hour ramp from 600°F to 1200°F (50°F per hour) X 1 hour soak at 1200°F 3 hour ramp from 1200°F to 1500°F (100° F per hour) 6 hour soak 2 at 1500°F 12 hour (minimum) cooling period from maximum temperature to ambient at a maximum of 150°F per hour unless starting production 1 Soak for 1 hour per inch of refractory thickness. 2 No soak period required if the unit is going into production. For production, continue to increase the ramp at 100°F per hour until operating temperature is increased.
3 hour ramp from 60°F to 300°F X 1 hour soak at 300°F 6 hour ramp from 300°F to 600°F (50°F per hour) X 1 hour soak at 600°F 8 hour ramp from 600°F to 1200°F (75°F per hour) X 2 hour ramp from 1200°F to operating temperature (100°F per hour) 12 hour (minimum) cooling period from maximum temperature to ambient at a maximum of 150°F per hour unless starting production 1 Soak for 1 hour per inch of refractory thickness. 2 No soak period required at maximum temperature. In no case exceed 3000°F for High Temperature, Low Cement Cast- able as damage to both burner internal and refractories may result.
WARNING: Situations dangerous to personnel and property may exist with the operation and maintenance of any combustion equipment. The presence of fuels, oxidants, hot and cold combustion products, hot surfaces, electrical power in control and ignition circuits, etc., are inherent with any combustion application. Components in combustion systems may exceed 160°F (71°C) surface temperatures and present hot surface contact hazard. Fives North American Combustion, Inc. suggests the use of combustion systems that are in compliance with all Safety Codes, Standards, Regulations and Directives; and care in operation.
CONTACT fna.sales@fivesgroup.com T +1 800 626 3477 - F +1 216 373 4237
Fives North American Combustion, Inc. 4455 East 71st Street - Cleveland, OH 44105 - USA www.fivesgroup.com
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