When the rotary kiln and the kiln furnace coal consumption of coal are reasonable in the circumstances, the temperature of various parts of the system are normal, clinker end grain is tiny and uniform, then the minerals are well developed, high strength, low content of free calcium . Rotary kiln kiln skin smooth, length, thickness is very reasonable, another refractory long life cycle. When coal furnace less coal and more cases kiln calcination, calciner and preheater temperature is low, raw materials burn well, such as kiln decomposition rate is not high, so it will force the kiln more coal, but also to strengthen calcined The results will be anxious single short flame burning so hot concentrated firing zone will be shortened, C3S formation time becomes shorter, will lead to reduction in the strength of clinker end grain size uniform, along with yellow heart, free calcium will rise, it would be difficult for calcined material, cylinder scan showed burning zone temperature, kiln refractory bear skins and meet large, easy to damage, is not conducive to long-term safe operation. More coal furnace, kiln calciner less coal outlet temperature at this time, while the lower speed due to decomposition absorb a lot of heat, the temperature changes little. Kiln temperature is low, the current is low. Since the kiln decomposition rate, burn better, forming long belt calcination temperature. Clinker appearance light color, small ball, dust, shifting sand large, dull, heavy low-rise, low intensity. Shifting sand kiln dust and coal burner for pouring material wear big. If the amount of air is not enough because the calciner, or because too little volatile coal, burning slow, it will lead to five or even excessive coal burning kiln. The result will make the smoke chamber kiln crust serious, and even the rear will hang thick kiln kiln skin, and even end laps. More coal furnace, kiln coal and more in this case, the system temperature are high, cylinder temperature also rises. Liquid appeared earlier, the flame temperature is high, the current high kiln to form long flame temperature calcination. Although clinker free calcium is low, weight lifting high, but after burning clinker end grain size large, dense hard grind. So easily damaged skin and refractory kiln, and even cooler knot "snowman." Fuel consumption high, C3S crystal thick, affecting cement hydration and strength. Less coal furnace, kiln burning less coal is a phenomenon due to the system temperature was low, the kiln current is low. Flame temperature is low, black attempting long. There are obvious owe clinker burning, pellet dull coloration fragile, dust, weight lifting low free calcium is high. When severe ran raw materials, kiln dark hair, take tobacco, serious erosion of the kiln skin. Please indicate Henan YuFeng Heavy Machinery (http://www.yufchina.com)