Preparation of Calcium Cyanamide.

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Abstract:

This invention relates to the economical production of a high purity calcium cyanamide from calcium carbonate and a mixture of ammonia and carbon dioxide in a multistage reactor. The multistage reactor increases the surface area for better contact between solid and gaseous reactants, removes the water formed, thus minimizing the decomposition of the product, and minimizes the cracking of ammonia by lowering the temperature of the reaction. The resulting calcium cyanamide has a purity of at least about 95 and contains no impurities which would deleteriously affect the BAF process. A further advantage is that the essentially pure calcium carbonate obtained as a by-product of the BAF process can be utilized according to the process of the present invention to produce calcium cyanamide employed as starting material in the BAF process.

Author(s):
Lewis, Charles W.
Author Organization(s):
DEPARTMENT OF THE ARMY WASHINGTON DC
Descriptive Note:
Patent Application,
Pagination:
0010

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release, Document Partially Illegible
Distribution Statement:
Availability: This Government-owned Invention Available For U.s. Licensing And, Possibly, For Foreign Licensing. Copy Of Application Available Ntis. Document Partially Illegible.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
PAT-APPL-140 049
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*Patent applications, *Calcium compounds, *Cyanamides, *Synthesis(Chemistry), Explosives, Propellants, Nitroguanidine, Guanidine nitrates, Inventions
Field(s)/Group(s):
Organic Chemistry, Ammunition and Explosives
Report Date:
1980 Apr 14