Title:
石炭灰固化物の製造方法
Document Type and Number:
Japanese Patent JP5704603
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To produce a solidified material having been coated with a material which ensures material strength, inhibits the elution of trace substances, improves design properties, and gives such surface denseness and whiteness as to enable the solidified material to be used as sand or gravel usable for the environmental restoration, such as artificial beach nourishment, of coasts, riversides, etc.SOLUTION: A kneaded mixture containing coal ash, lime, and an optionally added gypsum is granulated, the granules are coated with a shell powder during high-humidity curing or after underwater curing, and are subjected to air curing to form a solidified material surfaced with a thick carbonate film comprising calcium carbonate, etc., whereupon the shell powder is applied to the surface of the solidified material and fused by hydration reaction to be held on the surface of the solidified material.
Inventors:
Yoshiko Hiei
Shigeo Ito
Nobu Nunokawa
Shigeo Ito
Nobu Nunokawa
Application Number:
JP2011076699A
Publication Date:
April 22, 2015
Filing Date:
March 30, 2011
Export Citation:
Assignee:
Central Research Institute of Electric Power Industry
International Classes:
C04B41/65; B28B3/00; B28B11/06; C04B18/04; C04B18/10; C04B28/02
Domestic Patent References:
| JP2009263210A | ||||
| JP7206501A |
Attorney, Agent or Firm:
Hiroyuki Kurihara
Muranaka
Muranaka