论文部分内容阅读
近年来,粉煤燃烧在我国各地工厂大型炼铜反射炉中应用较广,它适用于有色金属冶炼中如粗铜精炼及炼冰铜等。我厂于1958年开始进行铜火法精炼反射炉应用粉煤进行加热,并推广至其它32米~2炉膛面积之大型反射炉,生产实践中证明粉煤燃烧有很多优点:(一)粉煤燃烧具有很高的燃烧效率,在炉子中进行的燃烧过程有40～50%热量是在炉子中直接靠辐射传给铜料。(二)粉煤燃烧时,过剩空气系数较少(一般为1.2～1.3),且燃烧较完全,而一般固体燃料之层状燃烧时过剩空气系数达1.3～1.6,还不能保证完全燃烧。(三)可利用低价值之烟煤,如含水
In recent years, the pulverized coal combustion in our country around the factory large copper refining furnace widely used, it is suitable for non-ferrous metal smelting, such as crude copper refining and refining ice matte. In 1958, our factory started to apply pulverized coal pyrolytic refractor furnaces for heating and extended it to other large reflecting furnaces with a furnace area of 32m ~ 2. The practice proves that there are many advantages of pulverized coal combustion: (1) Pulverized coal Burning with high combustion efficiency, the combustion process in the furnace 40 ~ 50% of the heat is in the furnace by radiation directly to the copper material. (B) When the pulverized coal combustion, the excess air coefficient is less (usually 1.2 to 1.3), and the combustion is more complete, while the average solid fuel stratified combustion excess air coefficient of 1.3 to 1.6, can not guarantee complete combustion. (C) can use low-value bituminous coal, such as water