| 摘要 |
A method for the production of nitrate containing products (fertilisers and technical products) from undercooling melts is described. An XN-water solution is evaporated up to a content of 50-99.8 weight % XN. N is nitrate and X is one or more selected from Ca, Mg, NH4, Na and K. The melt is cooled down to and kept at a temperature at or below the crystallisation point. Finely divided solid XN powder consisting of the equilibrium phases is then added to the melt. Melt drops are formed and allowed to cool and solidify during up to 70 seconds. It is preferred to use a cooling belt for solidification of the particles, the belt being cooled by air, water, oil, or another medium. |
