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此前,1992年,作者曾在西安市硅酸盐制品厂工作,从实践中体会到,必须注重经济社会效益,才能推动粉煤灰综合利用工作向前发展。西安市硅酸盐制品厂利用西安灞桥热电厂粉煤灰生产加气混凝土砌块已有多年历史,实践表明,此项产品的开发具有良好的社会效益。下表列出其综合效益对比情况。另外,从排灰单位来说,采用干法收尘和输送系统则是提高灰的质量增进经济社会效益的重要措施。下表是灞桥热电厂1988年对该厂干湿排灰两种除灰方式效益情况对照分析情况(日送灰200吨,灰水比1:15)。从中可以看出,每日输送
Previously, in 1992, the author worked at the Xi’an Silicate Product Factory. From experience, he must pay attention to the economic and social benefits before he can push forward the comprehensive utilization of fly ash. Xi’an City Silicate Products Factory has used the fly ash from the Xi’an Yongqiao Thermal Power Plant to produce aerated concrete blocks for many years. Practice shows that the development of this product has good social benefits. The following table shows the comparison of its comprehensive benefits. In addition, from the ash discharge unit, the use of dry dust collection and transportation systems is an important measure to improve the quality of ash and increase economic and social benefits. The following table shows the comparison and analysis of the benefits of the two types of ash removal methods for dry and wet ash from this plant in Yanqiao Thermal Power Plant in 1988 (200 tons of ash delivered per day, gray water ratio of 1:15). As can be seen, daily delivery