Li Ming, Xu Yuanqi, Chen Yin, Li Shouqiang, Wang Jianbang, Pan Wei, Li Zijun
School of Resource and Safety Engineering, Central South University, Changsha, Hunan 410083, China.
Xinjiang Kalatongke Mining Co., Ltd, Fuyun, Xinjiang 836100, China.
ACS Omega. 2025 Feb 7;10(6):6015-6024. doi: 10.1021/acsomega.4c10003. eCollection 2025 Feb 18.
In addressing the inadequacies of bonded dust suppressants employed in mining road applications, a novel approach is proposed for the research and development of a multifunctional road surface dust suppressant. A moisturizing functional component was added to enhance the fluidity and penetration capabilities of the dust suppressant; it can improve the coupling efficiency between the dust suppressant and the dust particles and then enhance the strength and thickness of the cemented layer of the dust suppressant. Fenugreek gum is selected as the bonding functional component due to its abundance in hydrophilic groups, facilitating enhanced coupling compatibility among the functional components and improving the coupling strength and crush-resistant performance of the dust suppressant cemented layer. The test method was proposed to simulate the action of vehicle roll, and the parameter of the abrasive resistance ratio is used to assess this effect. The optimized ratio of the multifunctional dust suppressant was obtained through laboratory experiments, and the results showed that the wind erosion rate was 36.0% at a wind speed of 8.0 m/s, and the abrasive resistance ratio was 72.9%. A field test was carried out in a metal mine, and the results show that the 24-h total dust suppression efficiency of the underground ramp without car and with car passage is 94.43% and 82.96%, respectively, which indicates that the dust suppressant has a certain performance resistance to vehicle rolling. By analyzing the microphotographs of dust samples, because of the synergistic effect of different functional components, the dust clusters in the solidified layer after treatment are interconnected to form a large number of curved and folded three-dimensional network coupling structures, and the wind erosion resistance and wear resistance are significantly improved.
针对采矿道路应用中粘结抑尘剂的不足，提出了一种用于研发多功能路面抑尘剂的新方法。添加了一种保湿功能成分以提高抑尘剂的流动性和渗透能力；它可以提高抑尘剂与粉尘颗粒之间的耦合效率，进而增强抑尘剂粘结层的强度和厚度。选择胡芦巴胶作为粘结功能成分，因为其亲水性基团丰富，有助于增强功能成分之间的耦合相容性，并提高抑尘剂粘结层的耦合强度和抗压性能。提出了模拟车辆滚动作用的试验方法，并使用耐磨率参数来评估这种效果。通过实验室实验获得了多功能抑尘剂的优化配比，结果表明，在风速为8.0 m/s时，风蚀率为36.0%，耐磨率为72.9%。在某金属矿山进行了现场试验，结果表明，无车和有车通过时井下斜坡道的24小时总抑尘效率分别为94.43%和82.96%，这表明该抑尘剂对车辆滚动具有一定的性能抗性。通过分析粉尘样品的微观照片，由于不同功能成分的协同作用，处理后固化层中的粉尘团簇相互连接形成大量弯曲和折叠的三维网络耦合结构，抗风蚀性和耐磨性显著提高。
