淮南煤中汞的分布与赋存

The Research into the Distribution Characteristics & Occurrence State of the Mercury in the Coal of Huainan City

煤中汞含量是估算燃煤排放汞量的重要数据之一,掌握淮南煤中汞的分布与赋存特征对研究华东地区煤中汞含量及减少燃煤造成的汞环境污染具有重要意义。通过对淮南9个矿区70个煤样中汞含量测试,分析其分布特征;研究煤炭洗选对煤中汞含量的影响及汞与煤中硫、灰分、铁和硒的相关关系,阐明淮南煤中汞的赋存状态。结果表明:淮南煤中汞含量算术平均值为2.22×10^(-7),与中国煤中汞平均值非常接近,略高于国外主要产煤区。矿物不是淮南煤中汞的主要赋存状态,汞主要被有机质束缚,或以极微小颗粒的形态弥散于煤的有机组分中。

As the mercury content is one of the key data to estimate the emission of the mercury in the coal, a de- tailed understanding of the distribution and occurrence state of the mercury in the coal bears great significance to the research into the mercury content and the subsequent effort to reduce the pollution to the environment by the mercury in East China. A test has been conducted on the 70 coal samples in the 9 mining areas in Huainan City, with an analysis of their distribution characteristics. We have carried out a research into the effect of coal washing on the mercury content in the coal as well as the relationship between mercury and sulfur, ash content, iron and selenium in the coal in an effort to illustrate the occurrence state of the mercury in the coal of Huainan City. The outco 10 -7 me has established that the arithmetic average regarding the mercury in the coal of Huainan City is 2.22 x , close to the average of that in China and a little higher than that in the major coal mines abroad. The rain- eral is not the main occurrence state of the mercury of the coal in Huainan City, with the mercury bound by or- ganic matter or dispersed in the organic components of the coal in the form of extremely tiny particles