Rotary kiln burner length should be long more appropriate? Burner (coal injection tube) into the rotary kiln number, usually the following discharge port shall prevail. Under normal circumstances the burner (coal injection tube) into the mouth of pulverized coal injection site should be flush with the lower discharge port, so you can keep the secondary air into the kiln when the flame does not have a big disturbance, the formation of a more reasonable flame. If the burner (coal burner) on the outside, secondary air into the kiln large impact on the flame, the flame thick loose, swinging big, black attempting a long, long front circle, burning live. Intractable; if the burner ( coal burner) by Lane, then with the opposite outer secondary air and smaller impact on the flame, add baking kiln coating, flame hair "dead ', black attempting short, weakness, cooling zone growth remains active spray coal into half chewed Shen best. burner location of the rotary kiln calcination hazards: Now several unusual burner (coal burner) location of the kiln calcination harm are as follows: ① burner (spray coal pipe) position is too high, the flame length, burned away, easy to burn the skin kiln operation difficult to control. Moreover, since coal pipe is too high, burning live material, often incoming low, not burn up, once the incoming multi-point, it is easy to shadow crossed the fire point, resulting in large climbing. idle temperature is not easy to lift the rear, once burning, it is easy to over-burning is often a temperature just in front of, behind passed burning, forced open the kiln fast wind, greatly reduced coal, thermal system instability, passive operation, affecting product quality. ② burner (coal burner) position is too low, the material came from a burning also, once more than expected, the flame under the bar, direct contact with the material, coal is volume in the material, the occurrence of incomplete combustion, the surface of the material layer to take cricket fire, fire point made muddy, yellow heart more than expected. affect cement color. Meanwhile, nearly burned, the flame is short, easy to form a local high temperature, so that from the front of the block, followed behind the shadows, watching the slow burn up when the slightest drive faster, the material that is rushing from one side to form a sandwich cooked in the supergene material, f-CaO content is high, seriously affecting the quality of cement. ③ combustion device (PCI tube) on the outside, as thick scattered flame instability, fire point forward, the shadows near the operation difficult to control, prone to slow, and easy to burn the skin in front of the kiln. ④ burner (coal burner) to send into too much, start the flame stretching force is poor, not the top material layer thickening material, kiln made muddy and difficult to observe, inconvenient operation and control; flame elongation, easy to burn the skin behind the kiln. reproduced please specify Henan YuFeng Heavy Machinery