某磨料厂“棕刚玉”冶炼1号炉于1988年8月15日23时开炉,至16日14时全部投料完毕,开始进入精炼期时,3号电极处刚玉熔液喷出而发生爆炸事敞,造成1号炉膛、炉壁震垮,后防爆墙变形,炉罩上方钢板缝开裂,炉台柱移位,炉台变形,车间房顶、门窗损坏,直接经济损失1万3千余元,2名操作工受伤。据调查分析,事故的原因一是原材料质量差、含硅量过高,因而在冶炼过程中容易结盖,致使冶炼温度超过极限。二是材料场地受限,每次购回的矾土无法分开堆放,造成矾土混合(每批矾土质量不一样),工艺要求的配方难以保证。三是矾土质量不好, An abrasive plant “corundum” smelting furnace No. 1 at 23 o’clock on the August 15, 1988 opened the furnace, at 14 o’clock on the on the 16th all the material is completed, began to enter the refining period, No. 3 electrode corundum melt explosion and explosion The accident caused the furnace No. 1, the furnace wall to collapse, the explosion-proof wall to be deformed, the crack in the steel plate above the furnace cover, the displacement of the grate column, the deformation of the furnace floor, the roof of the workshop and the damage to the windows and doors. The direct economic loss was over 13,000 yuan, Two operatives were injured. According to the survey and analysis, one of the causes of the accident is the poor quality of the raw materials and the excessive content of silicon, which makes it easy to knot the smelting process, resulting in the smelting temperature exceeding the limit. Second, the materials are limited. Each purchased bauxite can not be piled up separately, resulting in bauxite mixing (the quality of each batch of bauxite is not the same), and the recipe required by the process is difficult to guarantee. Third, the quality of bauxite is not good,