The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 24, 1995
Filed:
Nov. 23, 1993
Reinhard Bober, Weimar, DE;
Walter Spielmann, Schwedt, DE;
Glatt Ingenieurtechnik GmbH, Weimer, DE;
Abstract
Invention relates to a process of producing solid sodium cyanide. The process according to the invention is characterized in that an aqueous sodium cyanide solution (1) of 30 to 45% by mass, containing up to 5% by mass solids, is granulated in two process steps in counterflow with heated air, wherein in the first process step a fluidized bed is produced in a fluidized bed granulator (4) by means of hot air (5) from the second process step, in so doing the air being cooled down to a temperature of 60.degree. to 90.degree. C. a sodium cyanide granulate of 2 to 6 mm being set in a classifying discharge duct (16) and the same being dried to a residual moisture of 1.5 to 4% by mass, wherein in the second process step in a further fluidized bed of a drier (14) the granulate produced is dried through an air current (25) with initial temperatures of 150.degree. to 230.degree. C. to a residual moisture settable at liberty of less than 1.5% by mass and is removed by way of a cellular wheel (20 ).