| 摘要 |
PCT No. PCT/EP95/00771 Sec. 371 Date Sep. 11, 1996 Sec. 102(e) Date Sep. 11, 1996 PCT Filed Mar. 2, 1995 PCT Pub. No. WO95/24358 PCT Pub. Date Sep. 14, 1995Disclosed is a process for producing calcium cyanamide by reacting urea with an oxygen-containing calcium compound in at least two steps a) in a first step the reaction components are allowed to react under compression and/or while being revolved or by applying them to a hot surface at temperatures of 120 DEG to 500 DEG C. until a solid is formed and b) the solid reaction mixture that is formed is subsequently calcined at temperatures of 600 DEG to 900 DEG C. In this process it is possible to obtain high yields and throughputs of calcium cyanamide without requiring a time-consuming processing of the reaction product after the first or second step. |
