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平炉废气中夹杂着大量灰尘,公认的沉渣室沉渣量为每吨钢6～8公斤,而实际生产时更远远超出这个数值。这是由于补炉材料的直接射入、空气上升道墙的剥落及大量使用粉状材料的结果。尤其是在“过装”的平炉上,沉渣室的积渣更显见增加。积渣的增多使沉渣室内腔体积变小,气流速度增加,沉渣效率降低,废气中的灰尘便大量地被带进格子房,结果格子孔被堵塞,格子砖被渣化。这样便大大地恶化了格子砖的热交换作用,降低了空气和燃料的预热温度,使冶炼时间延长、生产率下降,被迫冷修。目前国内大都采用爆破法清渣。此法存在着严重的缺点,已不能适应当前生产。沉渣室积渣的清除直接影响冷
Open hearth exhaust gas is mixed with a lot of dust, it is recognized that the amount of sediment chamber sediment 6 to 8 kg per ton of steel, but the actual production even more than this value. This is due to the direct injection of make-up material, the spalling of air-rising walls, and the extensive use of powdered materials. Especially in the “over-loading” open hearth, sediment residue is more visible increases. The accumulation of slag increases the volume of the sediment chamber becomes smaller, the air velocity increases, the sediment efficiency decreases, the dust in the exhaust gas will be a large number of into the gridded room, resulting grid hole is blocked, the grid brick was slag. This greatly deteriorates the heat exchange effect of the lattice bricks, reduces the preheating temperature of air and fuel, prolongs the smelting time, decreases the productivity, and is forced to cold-repair. At present, most of the domestic blasting slag. This method has serious shortcomings, it can not adapt to the current production. Sediment residue removal directly affect the cold