| 摘要 |
PCT No. PCT/DK88/00038 Sec. 371 Date Dec. 27, 1988 Sec. 102(e) Date Dec. 27, 1988 PCT Filed Feb. 26, 1988 PCT Pub. No. WO88/06486 PCT Pub. Date Sep. 7, 1988.A method of granulating lime powder or the like, use being made of a counterflow mixing machine with scraping and mixing means. The mixing means are rotated about a substantially vertical axis, and the bottom of the mixing vessel is covered with a layer of substantially ball shaped bodies, and raw material, e.g. lime, is subsequently added in a suitable amount having a specified moisture content, the mixing means subsequently being rotated such that the raw material after a specified period of time dependent on its moisture content, sticks to the ball shaped bodies. The mixing means are subsequently further rotated for a period of time, also dependent on the actual moisture content, to the effect that the material collected on the said ball shaped bodies consequently is peeled off and settles on the bottom of the mixing vessel, the material being subjected to a final granulation in that the scraping and mixing means adapted for that purpose convey the material to a discharge grate situated at the bottom of the vessel. |
