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:
Feb. 17, 1981
Filed:
Apr. 06, 1979
Applicant:
Inventors:
Kazumasa Tezuka, Okayama, JP;
Seiichi Hisano, Okayama, JP;
Hyoichi Sasaki, Okayama, JP;
Ikuo Watanabe, Okayama, JP;
Assignees:
Dowa Mining Co. Ltd., Tokyo, JP;
Dowa Engineering Co. Ltd., Okayama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ; G01N / ;
U.S. Cl.
CPC ...
423242 ; 2323 / ; 2323 / ;
Abstract
Reaction heat values of basic aluminum sulfate solution with acid such as sulfuric acid are correlative with an amount of base contained in said solution. The difference of temperatures of said solution before and after its reaction with said acid is utilized as an indication for the calibration of the basic amount in the solution. This calibration is effectively utilized for the control of the basic amount of said solution which is employed in the removal of SO.sub.2 gas from a waste gas.