Rotary kiln wall temperature bonding material blocks tumor called refining side; along the kiln wall surrounding material called refining knot knot ring; if all edge and intermediate materials bonded together is called refining furnace. In the production of the kiln wall hung a little more material is normal, but if the kiln wall hanging too thick, that is not normal, refining side and ring initial smoke, thick white slowly curl weakness, haltingly, Later, the upper material layer dries out, like fire death in general, as long as four weeks have gas refining knot material increased thinning blinding smoke, flames sprang to white, with the drill rod inserted unplugged, the adhesion of the solution phase material , refining parts of the material stagnation knot does not sink, mixing kiln kiln material is not sinking. The formation of refining side, knot ring, refining kiln There are several reasons: First, the chemical composition of the raw material is inappropriate, especially in small wind operation, the material was calcined in a reducing atmosphere, coupled with the end of drawing fire, forcing the discharge is slow, high temperature material is easy to bonding with the kiln lining, generally concentrated fire smoke when the depth, material thickness, refining the initial and end laps early side comparison difficult to find. Second, the coarse coal particles in the material sphere, blending capacity, and coal material mixed uneven sufficient oxygen around, fuel combustion intense. Heat generated, coupled with ash fluxing action, so that the materials and refractory bonding occurs. Third, kiln ventilation uneven local area material layer compression, ventilation, carbon monoxide increases, produce large amounts of a reducing atmosphere, low-melting liquid matter too much, resulting in large knot in the middle no ventilation, ventilation around the excess edge the combustion of materials heated portion, generated heat, the molten material to form the ring brick. Fourth, the discharge rate is less than feeding, lit speed or discharge time is too long, high temperature kiln lining material and the contact time is longer, and bonded together. The above article by Henan YuFeng Heavy Machinery (http://www.yufchina.com) finishing release, reproduced, please indicate the source!