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目前,国民经济的迅速发展使能源紧张的矛盾日益尖锐,对煤的需要量大大增加。在这种形势下,一方面国家花费大量投资建设矿井和进行老矿井挖潜改造,另一方面煤矿又将大量的低热值燃料——煤矸石废弃。以我局为例,投产至今的20多年中排放煤矸石达3000多万吨,占地面积近百亩,并还在以200万吨/年的速度增加。据测算,如将我局的煤矸石资源利用起来,能建装机容量为7.8~7.9万kW的矸石发
At present, the rapid development of the national economy has made energy conflicts increasingly acute and the demand for coal has greatly increased. In this situation, on the one hand, the state spent a large amount of investment in building mines and tapping potential in old mines. On the other hand, mines also abandoned large quantities of coal with low calorific value, gangue. Taking the case of our bureau for example, more than 30 million tons of gangue have been discharged in the past 20 years since its commencement, occupying an area of nearly 100 mu and increasing at a rate of 2 million tons per year. It is estimated that, if the Bureau of coal gangue resources to use up to build capacity of 7.8 to 79,000 kW gangue hair