Study on coal dust wettability measurement using cold briquetting technique |
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| Authors: | Man Li Hai-hong Xu Xin-qian Shu |
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| Affiliation: | (1) Department of Resource & Environmental Engineering, North China Institute of Science and Technology, Beijing, 101601, China;(2) School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China |
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| Abstract: | Quantitatively-measuring of coal dust wettability is essential for the R/D of chemical coal dust suppressants in the field of dust control with wetting-agent-added water. Analysed the causes which in present lab testing of coal dust wettability cause out-comes’ low repeat rate and poor consistency with coal dust suppression practices in fields, and investigated the influence of different briquetting pressure (from 0 to 6.5×108 Pa) on the wet behavior of coal dust as a new way to evaluate quantitatively coal dust wettability. The study shows that there is a fairly high coincidence between the coal dust wettability data measured by briquetting technique and the results gained from the lab dust suppression tests using an apparatus MCYZ. Supported by the National Natural Science Foundation of China (90210014) |
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| Keywords: | coal dust wettability cold briquetting measuring |
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