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. 27, 1981
Filed:
Jul. 30, 1979
Ronald E Beese, Barrington, IL (US);
Niranjan M Parikh, Winnetka, IL (US);
Carl F Bauer, Chicago, IL (US);
American Can Company, Greenwich, CT (US);
Abstract
A technique for controlling severe chemical reactions which occur when salt containing furnace slags from secondary aluminum melting operations are brought in contact with water is provided. The technique which retards the formation and evolution of hydrogen gas resulting from the reaction of aluminum metal fines with water in the presence of chloride and the formation and evoluation of ammonia gas from the reaction of aluminum nitride with water is accomplished by controlling the pH of the water-solid slurry to be around 8. Consequently, the formation and gaseous evolution of hydrogen is controlled and the evolution of ammonia is eliminated with a concomitant elimination of explosion and fire hazards associated with the uncontrolled chemical reactions.