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:
Apr. 28, 1987
Filed:
Aug. 09, 1985
Nakamichi Yamasaki, Kouchi, JP;
Takeshi Kubota, Ibaragi, JP;
Yoshihiro Hoshino, Kashiwa, JP;
Hiroyuki Tanuma, Hachiouji, JP;
Mitsui Engineering & Shipbuilding Co., Ltd., Tokyo, JP;
Abstract
According to the method of this invention for fixation of incinerator ash, incinerator ash containing SiO.sub.2 and Al.sub.2 O.sub.3 is incorporated with NaOH or NaOH and an SiO.sub.2 -containing substance in such an amount that the resulting mixture contains 25 to 90 wt % of SiO.sub.2, 2 to 10 wt % of Na.sub.2 O, and more than 3 wt % of Al.sub.2 O.sub.3 which is less than the content of SiO.sub.2 in terms of mol %; 100 parts by weight of the mixture is mixed with more than 5 parts by weight of water; and the resulting mixture is subjected to hydrothermal reaction under a pressure of 70 kg/cm.sup.2 or above and at a temperature of 150.degree. C. and above, whereby the fixation is accomplished. According to the method of this invention for fixation of iodine sorbent, iodine is allowed to be adsorbed on a silver-loaded silicate sorbent; the iodine sorbent is mixed with 1 to 30 wt % of at least one of sodium hydroxide, potassium hydroxide, and barium hydroxide; and the resulting mixture is subjected to hydrothermal reaction under a pressure of 70 kg/cm.sup.2 and above and at a temperature of 150.degree. C. and above, whereby the fixation is accomplished.