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李刚 《中国安全生产科学技术》2021,17(10):60-65
为解决矿山溜井卸矿过程中粉尘浓度高、现有粉尘治理效果不佳的难题,以某金属矿溜井为研究对象,采用现场实测、理论分析等手段,分析溜井卸矿时粉尘的产生机理、粉尘浓度及粒径分布特征。基于溜井口产尘现状,研发新型复合除尘净化系统,并在该矿山溜井口开展现场试验研究。结果表明:该系统运行后对溜井粉尘除尘效果显著,进化后气流的粉尘浓度控制在2 mg/m3以内,可作为井下通风系统的进风风流,有效地提高了矿井通风系统风流利用率,在矿山生产系统具有广泛的应用前景。 相似文献
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左建湘 《湖南环境生物职业技术学院学报》2005,11(3):290-292
针对湘西锰矿床地质特征,结合区域锰矿地质背景、矿床地质条件和控矿因素,初步提出了该区找矿标志及找矿方向. 相似文献
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Emission rate formulae for surface iron ore mining activities 总被引:1,自引:0,他引:1
S. K. Chaulya 《Environmental Modeling and Assessment》2006,11(4):361-370
A study was carried out at three surface iron ore mines to determine the total suspended particulate emission rate and to develop the formula for the emission rate of various surface iron ore mining activities. The study covered various mining activities and locations including waste loading and unloading, iron ore loading and unloading, screening plant, exposed waste dump, stock yard, exposed pit surface, transport road and haul road. A set of 10 formulae was developed to calculate the total suspended particulate emission rate of various surface iron ore mining activities. The emission of gaseous pollutants (sulphor dioxide and oxides of nitrogen) was also evaluated but was found negligible for various mining activities, and emission rates were determined for overall mine only. The developed formulae were validated with the measured emission data at another surface iron ore mine. The accuracy of the activity-wise emission rates calculated using the developed formulae was found to vary from 92 to 97% of actual field measurement data. The developed formulae for determination of emission rate from various surface iron ore mining activities will help in predicting air quality status through air quality modelling and designing effective mitigative measures for sensitive areas during the planning stage of a proposed mine. 相似文献
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The results of previous investigations in mineralized and sterile areas of Tuscany (Italy) appeared to point out the special aptitude of holly (Ilex aquifolium L.) in concentrating cadmium and zinc. in the present paper this behaviour has been verified in a mineralized area of Lombardy (Northern Italy).
Samples of leaves, twigs and barks from holly trees were collected, and metal contents (Zn, Cd, and Pb) have been determined by differential pulse anodic stripping voltammetry (DPASV). for comparison, some samples of wood anemone (Anemone nemorosa L.) and soil were also analyzed.
The data obtained confirm a preferential cadmium and zinc accumulation by holly (up to 16 and 1400 μg g-1 dry weight, respectively) also depending on different vegetal organs and vegetative stages of plants. Highest contents of lead have been recovered in the outer portion of bark. 相似文献
Samples of leaves, twigs and barks from holly trees were collected, and metal contents (Zn, Cd, and Pb) have been determined by differential pulse anodic stripping voltammetry (DPASV). for comparison, some samples of wood anemone (Anemone nemorosa L.) and soil were also analyzed.
The data obtained confirm a preferential cadmium and zinc accumulation by holly (up to 16 and 1400 μg g-1 dry weight, respectively) also depending on different vegetal organs and vegetative stages of plants. Highest contents of lead have been recovered in the outer portion of bark. 相似文献