| 摘要 |
A method of separating fine coal particles from refuse in a coal-refuse mixture comprises the steps as follows: a) mixing water and oil with a feed coal-refuse solids mixture comprising fine coal particles and fine refuse particles, said fine coal and refuse particles being less than 1.41 mm in size, in a weight ratio of oil to solids of from 0.5:100 to 2:100 at high shear agitation conditions to form a floccular mixture comprising flocs of oil and fine coal particles and unflocculated refuse in water, b) floating said flocs of oil and coal particles from said floccular mixture in a flotation means to separate said floccular mixture into a floated floccular clean coal and oil product and refuse, said clean coal and oil product comprising said flocs of oil and fine coal particles in water, and c) separating said flocs of oil and fine coal particles from a substantial portion of said water to recover a fine coal and oil product. o |
