Calcining zone is usually called the heart of the kiln, it is products sintering core, perennial production temperature 980 ~ 980 ℃ or so, roasting with general from burning fuel belt at the top of the hole into the coal burning heating bricks. Exhaust gas from the preheating zone through smoke vent discharge flue, cooling products with air cooling zone at the end of the cold air into the furnace mouth, by the heat of the hot air after cooling products, part for the use of drying by heat fan, part into the roasting zone for fuel use, especially the rapid developing wide section tunnel kiln condole top, now how to deal with positive pressure sintering, this is the common phenomenon, the phenomenon of refractory material we use is a challenge, condole top heat hook is also a kind of test, including refractory concrete girder or steel girder structure is important one annulus, many large cross section tunnel kiln easily in the calcining zone of unexpected problems occur at any time.
How to solve the similar problem, first of all, the emphasis should be put on select material, increase the reliability of structural design, don't consider temporarily save investment, but also for the other material aspects of the firing fastidious, ensure the burnt area. Such as arc beam arch structure of tunnel kiln arch foot, the columns, poles, are burning kiln and solid, the structure of strengthening parts part to dosing, according to the principle of firing thermal never due to easy to Jane. Burning the refractory part to stand the test of under high temperature and use. Select the specification, standard manufacturer's products, is conducive to the durability of firing area, to ensure its heat insulation function. The best calcining zone stable functions.