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近几年,国外在铸造和炼钢生产中广泛应用了泡沫陶瓷过滤器,其孔隙达到90%,且孔大小为0.5～5.0mm。使用泡沫陶瓷过滤器的好处很多,可提高成品的洁净度,降低废品数量,提高金属实收率及节约电能等。泡沫陶瓷过滤器因其自身结构不同于二维过滤器,它甚至能过滤掉极小的夹杂物。我们都知道,由于球形石墨的副产品——菱镁硅酸盐渣的存在,球墨生铁的浇铸系统和沉渣室比正常的要大50%～100%。所以合格的球墨铸铁实收率总计为50%～70%。甚至在使用复合的浇铸系统的情况下,由于非金属夹杂而浇铸成的废
In recent years, foreign countries in the casting and steel making widely used foam ceramic filter, the porosity reached 90%, and the hole size of 0.5 ~ 5.0mm. Using ceramic foam filter has many benefits, can improve the cleanliness of finished products, reduce the amount of waste, improve the metal yield and save energy. Because of its own structure is different from the two-dimensional filter foam ceramic filter, it can even filter out very small inclusions. We all know that the ductile iron casting system and sedimentation chamber are 50% to 100% larger than normal due to the presence of spherical graphite by-product magnesite slag. Therefore, the actual ductile iron castings yield a total of 50% to 70%. Even in the case of the use of a compound casting system, waste products cast as a result of non-metallic inclusions