An Experimental Study on Wetting of Coal Dust by Surfactant Solution

Table 2

Industrial analysis indexes and characteristic particle sizes of experimental coal samples.

No.	Coal property	Mad (%)	Aad (%)	Vad (%)	FCad (%)	D10 (μm)	D50 (μm)	D90 (μm)
1	Lignite (LC)	1.59	10.75	39.87	49.79	21.43	109.53	171.05
2	Gas coal (GC)	2.02	10.27	34.02	53.69	32.01	123.98	234.30
3	Fat coal (FC)	2.36	10.87	34.42	56.71	11.86	100.89	205.79
4	Coking coal (CC)	2.56	12.72	14.94	69.78	6.52	76.19	195.27
5	Meager-lean (MLC)	3.56	13.18	15.39	67.87	20.79	111.91	231.72
6	Anthracite (AC)	3.25	23.50	5.10	68.15	7.98	81.86	215.41

“Mad” denotes air-dried moisture content in the air, “Aad” denotes air-dried ash content in the air, “Vad” denotes air-dried volatile content in the air and “FCad” denotes the content of fix carbon. D₁₀, D₅₀, and D₉₀ are characteristic particle diameters, i.e., the volume of the particles with the diameters below D₁₀, D₅₀, and D₉₀ occupy 10%, 50%, and 90% of total particle volume, respectively.