| 摘要 |
A pumpable slurry of material particles in water comprises coarse mineral particles having a particle size in the range 5 to 50 mm and fine mineral particles having a size less than 200 micron. The slurry contains 82 to 85%, preferably 83-85%, by weight of mineral particles based on the combined weight of the mineral particles and water. At least 30% by weight of the mineral particles are in the form of coarse particles, 10 to 40% by weight are in the form of fine particles and the balance to 100% by weight are intermediate sized particles. The mineral particles are preferably coal. Slurries of this concentration have special properties in that they are sufficiently fluid to be pumped through a pipeline, yet sufficiently solid when static to be handled by grabs and similar devices. |
