Process for the preparation of calcium cyanamide
AssigneeSKW Trostberg Aktiengesellschaft
InventorJoachim Ebeling
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Abstract
A process for the preparation of calcium cyanamide by nitrification of calcium carbide composition in a rotary furnace. Ground carbide composition, composed of calcium carbide to which, if appropriate, calcium cyanamide and/or calcium fluoride have been added, is compacted to a density of from about 1.3 to 2.0 g/cm.sup.3 before introduction to the rotary furnace. In this manner the severe caking on the rotary furnace wall which normally takes place in the course of nitrification is prevented and the nitrification yield is unexpectedly increased.
Claims10
A process for the preparation of calcium cyanamide in high yield by nitrifying calcium carbide in a rotary furnace while preventing severe caking of the calcium carbide on the furnace walls during nitrification, which comprises introducing ground calcium carbide composition into the furnace in the form of a densified mass having a density of from about 1.3 g/cm.sup.3 up to about 2.0 g/cm.sup.3.
Dependencies are inferred from the claim text.