Study on coal dust wettability measurement using cold briquetting technique

• 来源期刊: 煤炭学报(英文版)
• 年，卷（期）: 2008,（4）
• 页码范围: 571-574
• 页数: 4页
• 语种: 英文

摘要

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 6.5x108 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.