Title: Method for producing solid sodium cyanide
Application Number: 97111843 Application Date: 1997.06.24
Publication Number: 1172071 Publication Date: 1998.02.04
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C01C3/10
Applicant(s) Name: Du Yaoli Address: 300211
Inventor(s) Name:
Attorney & Agent: HOU LI
Abstract:
     The present invention belong's to a method for producing solid sodium cyanide in chemical industry field. Said method includes the following steps: using hydrogen cyanide and caustic soda for neutralizing to produce sodium cyanide; making low-temp. crystallization process to precipitate hydrated sodium cyanide; making centrifugal separation to separate out crystal, and then making heating-melting process, and mixing it with dried material, granulating, microwave-drying, feeding partial material into mixing-compounding process, and taking out partial material to make it into formed product. The equipment investment of said method only is 10% of that of original method, and its product purity is high, cost is low, it is applicable to preparation of sodium cyanide by light-oil cracking.
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