| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a producing method of a zeolite hardened body in which such problems found in the conventional producing method that the hardened body of stabilized quality is hardly obtained because a uniform activating treatment results in different activated states according to raw material sources and, on the contrary, the alteration of the conditions of activating treatment at each time requires much labor and makes it difficult to perform the condition setting itself because even the subsequent hardening treatment conditions should be changed when the zeolite hardened body is produced by using the raw material different in the raw material sources are dissolved. SOLUTION: In this producing method of the zeolite hardened body in which powder and granular material contains alumina and silica of the proportion corresponding to the chemical composition of zeolite, the powder and granular material of 10-30 pts.wt. in a grain size range of <=5.0 mm and >=2.5 mm, the powder and granular material of 10-30 pts.wt. in a grain size range of <2.5 mm and >=1.2 mm and the powder and granular material of 40-80 pts.wt. in a grain size range of <1.2 mm are subjected to an alkali treatment, thereafter are formed and are subjected to a hydrothermal treatment.</p> |
