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To describe a low-field nuclear magnetic resonance (NMR) method for quantifying pore–fracture fractal dimensions and their influence on effective porosity and permeability, we performed modeling comparisons between fractal analysis and pore–fracture physical properties in low-rank coals. The adsorption space fractal (DNMRA), seepage space fractal (DNMRS) and moveable fluid space fractal (DNMRM) were...
The ultrafine coal water slurry (CWS) with the particle size of 1–10μm, ash content of 1–2%, solid concentration of 50% is a promising substitute fuel for diesel oil. The effects of pore fractal structures of three ultrafine CWSs on their rheological behaviors and combustion dynamics were studied in this paper. When the pore fractal dimensions of Yanzhou, Huainan and Shenhua ultrafine CWSs increase,...
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