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我厂从1984年9月开始进行了大煤量喷吹试验。首先从改进原煤质量着手。确定了本市大村煤矿1号坑为我厂唯一高炉喷煤专供点。该矿产煤的化学成份为:灰份13.45%,挥发物4.62%,固定碳81.82%,硫0.44%,发热量30.93MJ/kg。其次,确定了合理的操作制度。在多风口均匀喷吹的原则下,根据喷吹枪数和风量情况来确定合理的喷吹率。在我厂高炉现有400m~3/min风机能力下,喷煤率最高可达25%。经测算,在喷煤量为每小时1000kg的条件下高炉至少要保持
I plant from September 1984 began a large coal injection test. First start with improving the quality of raw coal. Determine the city’s No. 1 mine Dacun mine for the only blast furnace coal injection plant for the point. The coal chemical composition of the mine are as follows: 13.45% of ash, 4.62% of volatile matter, 81.82% of fixed carbon, 0.44% of sulfur and 30.93MJ / kg of heat. Second, to determine a reasonable operating system. In the multi-tuyere uniform blowing principle, according to the number of blow-gun and air volume to determine a reasonable rate of injection. In our factory blast furnace existing 400m ~ 3 / min fan capacity, the rate of coal injection up to 25%. It is estimated that the blast furnace should be maintained at least when the amount of coal injected is 1000kg per hour