Patent ID: 6102693
Filing Date: 2000-08-15
Classification: F27B,F27D

Abstract:
A preheating method in a continuous furnace which comprises preheating articles in a preheating chamber connected adjacent one end thereof to a high-temperature chamber and adjacent its opposite end to a heating chamber, and which is characterized by causing gases coming out from the articles in the preheating chamber to be led to the high-temperature chamber annexed to the preheating chamber by creating a negative pressure working in the high-temperature chamber, causing the gases to be oxidized in the high-temperature chamber at a high temperature and under an excess of oxygen, and causing the gases to be exhausted outside of the furnace via an exhaustion-pipe, one end of which opens at the high-temperature chamber, the other end of which opens outside of the furnace, and which pipe extends intermediate its ends through the preheating chamber, whereby the gases are utilized to heat the preheating chamber.