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随着我国煤炭产量的不断增长和机械化开采程度以及入洗煤比例的不断提高,煤矸石的排放量也日趋增多。据不完全统计和推算,我国历年来积存的煤矸石已达15亿t,每年还将新增排放量2亿t。自70年代起广大科技工作者为综合利用煤矸石开辟了一系列有效利用途径,但每年的煤矸石利用量仅有3000～4000万t,极大部分煤矸石仍要堆放起来。对矿区环境造成了严重污染,破坏了矿区周围的生态平衡。本文针对煤矸石的堆放问题谈一点粗浅看法。一、煤矸石的特性煤矸石属沉积岩类,一般的岩石有粘土岩类、砂岩类、碳质岩类、钙质岩类和铝质岩类等。煤矸石的化学成份较复杂,所包含的元素多达几十种,其中以SiO_2和Al_2O_3为主,另
With the continuous growth of coal production in our country and the degree of mechanized mining and the continuous increase of the proportion of coal washing, the discharge of coal gangue is also increasing day by day. According to incomplete statistics and projections, China has accumulated 1.5 billion tons of gangue over the years, and will annually add 200 million tons of emissions. Since the 1970s, a large number of scientists and technologists have opened up a series of effective utilization ways for the comprehensive utilization of coal gangue. However, the annual utilization of gangue is only 3,000-40 million tons, and the vast majority of coal gangue still needs to be piled up. Causing serious pollution to the mining environment and undermining the ecological balance around the mining area. This article talks about the stacking of coal gangue a little superficial view. First, the characteristics of gangue Coal gangue is a sedimentary rock, clay generally rock, sandstone, carbonaceous rocks, calcareous rocks and aluminum rocks. Gangue chemical composition is more complex, contains up to dozens of elements, including SiO_2 and Al_2O_3-based, and the other