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黑岱沟露天煤矿采装环节减尘技术研究

Study on dust reduction technology in mining and loading operation of Heidaigou Open-pit Coal Mine

  • 摘要: 针对黑岱沟露天煤矿爆堆采装作业粉尘污染问题,研制了一种具有快速渗透效果的抑尘剂。通过正交试验和渗透性能测试优化配方,确定最佳组分的质量分数分别为:水性聚氨酯0.10%、黄原胶0.02%、聚乙二醇(PEG-1500)0.06%、快渗T 0.50%。将抑尘剂在现场应用,并分别进行了含水率测试、粉尘浓度监测和扫描电镜分析,结果表明:该抑尘剂具有良好的保湿性能和减尘效果,相同喷洒量下对比喷洒纯水,水分流失量减少26.7%,减尘量增加了14.5%。扬尘量随着抑尘剂溶液喷洒量的增大而减小,结合成本分析,确定爆堆每10 m区域喷洒15 t抑尘剂溶液性价比最高。

     

    Abstract: In view of the dust pollution problem from blasting muckpile,as well as mining and loading operation at the Heidaigou Open-Pit Coal Mine,a dust suppression with rapid penetration effect was formulated. The formula was optimized through orthogonal tests and permeability performance tests,and the mass fractions of the optimal components were determined as follows:0. 10% waterborne polyurethane, 0. 02% xanthan gum, 0. 06% polyethylene glycol (PEG-1500), and 0. 50% fast penetration T. Field applications of the dust suppression were conducted, accompanied by assessments of moisture content, monitoring of dust concentration, and scanning electron microscopy (SEM) analysis. The results indicated that the dust suppression exhibited excellent moisture retention and effective dust suppression capabilities. Specifically,when compared to the application of pure water at equivalent rates,moisture loss was reduced by 26. 7%,while dust suppression efficiency increased by 14. 5%. Additionally,it was observed that dust emissions decreased progressively with increasing application rates of the dust suppression solution. A comprehensive cost analysis determined that applying 15 tons of the dust suppression solution per 10-meter area of the blasting muckpile provided the best cost-performance ratio.

     

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