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煤矸石可分为掘进矸石、开采矸石和洗选矸石,其化学成分、矿物组成、发热量变化很大。就利用价值而言,以洗选矸石较佳。它的化学成分及矿物组成较稳定,发热值也较高,是我国沸腾锅炉坑口电站的主要燃料。由于煤矸石中可燃物仅为10～30％,发热量只有1000～2500千卡,灰分约70％,一吨矸石经过沸腾锅炉燃烧后,产生650～800公斤灰渣。因此,沸腾锅炉发电厂的一个重要任务是如何处理沸腾炉灰渣(简称
Coal gangue can be divided into burned gangue, mining waste rock and washing gangue, its chemical composition, mineral composition, calorific value varies greatly. On the use of value, to wash the waste rock better. Its chemical composition and mineral composition is more stable, the calorific value is higher, it is the main fuel of the boil-mouth power plant in our country. As gangue fuel is only 10 to 30%, the heat is only 1000 ~ 2500 kcal, about 70% ash, a ton of waste rock after boiling boiler, resulting in 650 to 800 kg of ash. Therefore, boiling boiler power plant is an important task how to deal with boiling furnace slag (referred to as