![]() Kiln fuel options are very strict
Fuel of choice for use on rotary kiln is very important, this relationship with product quality, so for rotary kiln fuel must strict attention. Burning kiln materials should ensure a higher temperature. The traditional view is that: clinker formation, firing range with the temperature of the material is at 1300-1450-1300 ℃. Then the flame temperature should not fall below the minimum 1550 ℃, otherwise the material will be affected firing. The latest results show that the actual temperature may be even higher. High temperatures in the kiln must be able to form part of a long flame, so that the material in the high temperature range, can stay 10-20min, in order to facilitate the formation of tricalcium silicate, to ensure the quality of clinker production. Flame temperature depends mainly on the calorific value of coal and rotary heat capacity per unit time. At present, China mainly uses bituminous coal as kiln fuel, heat is generally 5000-7000kcal/kg appropriate. Volatiles to 20% -50%, ash and moisture will want better. Because coal ash and moisture will reduce fuel heat; addition, kiln ash more easily cause knot ring, ingredients are difficult to control. To control the quality of coal required to make a daily analysis of coal, coal to watch the operation of the fire workers to provide basis. The above article by Henan YuFeng Heavy Machinery (http://www.yufchina.com) finishing release, reproduced, please indicate the source!
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