Effect of Agitation on the Dissolution of APAM with Different Molecular Weights and the Equivalent Diameter of Coal Slime Settling Floc with Different Particle Sizes

There are still many problems in the stirring dissolution of flocculants: The law flocculants with different molecular weights is not clear, microstructure settling floc particle sizes coal slime to be explored, and how apply flocculant industrialization? To solve these problems, firstly, mechanical tests carried out on anionic polyacrylamide (APAM) explore APAM 3–25 million weights. Results indicated that optimal speed 3–6 weight 800 r/min. 8–16 600 18–25 power formula for improved by fitting experimental data dissolution. Secondly, through performance test, it verified solubility powdered best under solution. Thirdly, image measurement analysis test slime, change equivalent diameter parameters explored. showed when mixing r/min, −0.5 mm largest. When 200 r/min or 400 diameters 0.5–0.25 mm, 0.25–0.125 0.125–0.075 0.075–0.045 −0.045 positively correlated size dominant factor fractal dimension. dimension largest, little affected speed. Finally, relationship between important numerically fitted. In view geometrical barrel, a method deducing time industrial proposed.