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风温是高炉冶炼热能主要来沅之一。提高风温可以显著降低燃耗,也是增加喷吹量、提高置换比的关键因素。各国都把提高风温作为降低焦比的一个重要手段,最高的已达一千三百度以上。除温度以外,风中的湿分也是影响焦比的因素。大气中所含水分因时因地而异。在日本,冬季干燥季节每立米为五至六克,而在梅雨季节则达三十多克。空气中水分的变化,会引起高炉炉况波动。过去多是采用加湿鼓风的办法,固定风中湿分,以达稳定炉况的目的。但是,风中的水分在炉内发生吸热的分解反应,消耗炉缸的热量,导致烧料消耗增加。据计算,每立方米风中一克湿分相当于影响风温九度,但因水分分解产生的氢在高炉上部参加还原反应,所以实际影响为风温六
Wind temperature is one of the main source of blast furnace smelting heat. Increasing the air temperature can significantly reduce fuel consumption, but also increase the injection volume, improve the replacement ratio of key factors. All countries regard raising the temperature as an important measure to reduce the coke ratio, the highest reached over 1,300 degrees. In addition to temperature, the moisture in the wind is also a factor that affects the coke ratio. The moisture contained in the atmosphere varies from time to time. In Japan, the winter dry season is 5-6 grams per cubic meter, while in the rainy season it is over 30 grams. Changes in the air moisture can cause fluctuations in furnace conditions. The past is the use of humidification blast method, the fixed moisture in the wind, in order to stabilize the furnace conditions. However, moisture in the wind undergoes an endothermic decomposition reaction in the furnace, consuming heat from the hearth, resulting in an increase in burn-in consumption. It is calculated that one gram of moisture per cubic meter of wind is equivalent to affect the wind temperature nine degrees, but due to the decomposition of hydrogen generated in the upper part of the blast furnace to participate in the reduction reaction, so the actual impact of the wind temperature six