Abstract Increasing expansion of China’s coal mine production leads to the increased storage pressure in current coal silos. Most of these coals are stored in open-air coal pile. Therefore, those coal piles have caused a series of environmental pollution problems, which includes endangering workers’ health and aggravating air pollution in the surrounding natural environment. Therefore, it is urgent to study and prevent the dust flying problem of coal pile. This paper, based on a single chemical dust suppressant, optimizes a new type of composite binder. This composite binder has advantages of dust suppression effect, relatively simple preparation process and the environmentally friendly agent. This paper is mainly divided into two parts: the study on the influencing factors of dust wetting and the development and application of related spraying systems. Through the energy spectrum analysis of scanning electron microscope and reverse osmosis method, it explores the dust wetting and suppression characteristics of the composite binder with different physical and chemical properties. The optimal application range of the composite binder are obtained. Finally, an automatic spraying system for dust suppression is designed. The composite binder developed in this paper is applied in the open-air coal yard and the results show that the composite binder studied in this paper has a good effect of dust suppression.

中文翻译：

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一种煤堆润湿抑尘复合粘结剂

摘要 随着我国煤矿生产规模的不断扩大，现有煤仓的储存压力越来越大。这些煤大部分储存在露天煤堆中。因此，这些煤堆造成了一系列环境污染问题，包括危害工人健康和加剧周围自然环境的空气污染。因此，研究和防治煤堆扬尘问题迫在眉睫。本文在单一化学抑尘剂的基础上，优化了一种新型复合粘结剂。该复合粘结剂具有抑尘效果好，制备工艺相对简单，是一种环保型粘合剂的优点。本文主要分为两部分：粉尘润湿影响因素的研究及相关喷洒系统的开发与应用。通过扫描电镜能谱分析和反渗透法，探讨了不同理化性质复合粘结剂的润湿抑尘特性。得到了复合粘结剂的最佳应用范围。最后，设计了一种抑尘自动喷淋系统。将本文研制的复合粘结剂应用于露天煤场，结果表明本文研究的复合粘结剂具有良好的抑尘效果。探讨了具有不同物理和化学性质的复合粘结剂的粉尘润湿和抑尘特性。得到了复合粘结剂的最佳应用范围。最后，设计了一种抑尘自动喷淋系统。将本文研制的复合粘结剂应用于露天煤场，结果表明本文研究的复合粘结剂具有良好的抑尘效果。探讨了具有不同物理和化学性质的复合粘结剂的粉尘润湿和抑尘特性。得到了复合粘结剂的最佳应用范围。最后，设计了一种抑尘自动喷淋系统。将本文研制的复合粘结剂应用于露天煤场，结果表明本文研究的复合粘结剂具有良好的抑尘效果。