School of Resources and Safety Engineering, Central South University, Changsha, Hunan, China.
Energy and Environmental Protection Department, Guangxi Liuzhou Steel Group Co., Ltd, Liuzhou, Guangxi, China.
J Air Waste Manag Assoc. 2023 May;73(5):394-402. doi: 10.1080/10962247.2023.2189173.
Traditional bonded dust suppressants have high viscosity, insufficient fluidity and poor permeability problems, which is adverse to the formation of a continuous and stable solidified layer of dust suppressant solution on the surface of a dust pile. Gemini surfactant has efficient wetting performance and environmental protection performance, it is introduced as a wetting component to improve the flow and penetration performance of bonded dust suppressant solution, polymer absorbent resin (SAP) and sodium carboxymethyl starch (CMS) were selected as the main components of dust suppressant. A proportioning optimization model was constructed based on response surface methodology (RSM), and the concentration of each dust suppression component was selected as the independent variable, water loss rate, moisture retention rate, wind erosion rate and solution viscosity were chosen as the dependent variables in this model. The optimal formulation of the improved bonded dust suppressant was obtained by analyzing the laboratory experiments and field tests data. The results show that the effective time (≥15d) of the newly developed dust suppressant is 45 times longer than that of pure water (≈1/3d), and 1.875 times longer than that of the comparative dust suppressant (8d), the comprehensive cost is 27.36% lower than that of the similar dust suppressant product for mining enterprises.: This paper presents the research idea of optimizing the bonded dust suppressant based on the improvement of wetting performance. And the paper used response surface method to obtain a wetting and bonding composite dust suppressant formulation. The field test shows that the dust suppressant has good dust suppression performance and economic benefits. This study laid the foundation for the development of new and efficient dust suppressants, and had important theoretical and application values for reducing dust environmental hazards and preventing occupational diseases.
传统的粘结型抑尘剂存在粘度高、流动性差、渗透性不足等问题，不利于抑尘剂溶液在粉尘堆表面形成连续稳定的固化层。双子表面活性剂具有高效的润湿性能和环保性能，被引入作为润湿成分，以提高粘结型抑尘剂溶液的流动性和渗透性。聚合物吸水树脂（SAP）和羧甲基淀粉（CMS）被选为抑尘剂的主要成分。基于响应面法（RSM）构建了一个配比优化模型，以每个抑尘成分的浓度为自变量，以水分损失率、保水率、风蚀率和溶液粘度为因变量。通过对实验室实验和现场试验数据的分析，得到了改良粘结型抑尘剂的最佳配方。结果表明，新型抑尘剂的有效时间（≥15d）是纯水（≈1/3d）的 45 倍，是对比抑尘剂（8d）的 1.875 倍，综合成本比类似的矿业企业抑尘剂产品低 27.36%。本文提出了基于提高润湿性能优化粘结型抑尘剂的研究思路，并采用响应面法得到了一种润湿粘结复合抑尘剂配方。现场试验表明，该抑尘剂具有良好的抑尘性能和经济效益。本研究为开发新型高效抑尘剂奠定了基础，对于减少粉尘环境危害和预防职业病具有重要的理论和应用价值。
