ABSTRACT

This research focused on the issue of reducing the coal dust emission from the coal mining industry. Out of various binders for dust suppression, the authors used sodium carboxymethylcellulose (SCMC) with the spraying technology. The PM₁₀ coal dust was recognized as the most harmful fraction. A laboratory setup based on a sealed dust suppression bunker with 10 g dust samples was tested, placed on a square with the dimensions of 250 × 250 mm. The air with the coal dust was blown and spread for one minute, until the concentration was equalized over the volume of the bunker; then, the concentration was measured for one hour. The untreated and treated samples of water and aqueous solutions with the SCMC content of 0.05%, 0.1%, 0.2%, and 0.4% were tested and the dust suppression efficiency was calculated. The best obtained efficiency of the 0.1% solution of SCMC was compared with other less or more concentrated solutions or distilled/technical water.

摘要

本研究的重点是减少煤炭开采行业的煤尘排放问题。在用于抑尘的各种粘合剂中，作者将羧甲基纤维素钠 (SCMC) 与喷涂技术结合使用。PM ₁₀煤尘被认为是最有害的部分。测试了基于密封抑尘仓的实验室装置，装有 10 g 粉尘样品，放置在尺寸为 250 × 250 mm 的正方形上。将带有煤尘的空气吹散一分钟，直到浓度与煤仓的体积相等；然后，测量浓度一小时。分别对SCMC含量分别为0.05%、0.1%、0.2%和0.4%的水和水溶液样品进行了测试，计算了抑尘效率。将 0.1% 的 SCMC 溶液与其他浓度更低或更高的溶液或蒸馏水/工业用水进行比较，获得的最佳效率。