Study on Measurement and Calculation of Critical Surface Tension of Wetting Coal with Water
Abstract：In order to improve the seam water injection effect, the paper introduced the coal wetting process with water. The coal surface tensions with six different aqueous solutions and the contact corner of coal samples from Chengzhuang Mine were tested and measured. The Zisman method was z.pplied to calculate the critical surface tension of the coal samples from Chengzhuang Mine. The results showed that the surface tension with suds would be the lowest and the average critical surface tension of coal samples from Chengzhuang Mine would be 17.15 mN/m. As the surface tension lower than 17. 15 mN/m, the water could make the coal fully wetted and fully expanded. Different kind water to make the surface tension higher than 17.15 mN/m, the surface tension more closely to the value and the wetting effect would be better. The critical surface tension could be aoolied to evaluate the effect of the coal wetting with rnina watar
Keywords：wettingcontact cornercritical surface tensionseam water injection
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 64-66,107 )