Title:
AGING METHOD OF SLUG, MANUFACTURING METHOD OF CIVIL ENGINEERING MATERIAL, AND CARBONATION ACCELERATOR FOR AGING TREATMENT OF SLUG
Document Type and Number:
Japanese Patent JP2020132457
Kind Code:
A
Abstract:
To provide an aging method of slug capable of shortening an aging treatment for expansion suppression of the slug and elution suppression of high alkali water from the slug, by effectively accelerating carbonation of free CaO or free MgO in the slug.SOLUTION: An aging treatment for carbonating a hydrate with a carbonation accelerator made of at least one or more kinds selected from carbonates and hydrogen carbonates contacted with the slug containing hydrate of CaO and/or MgO undergone an aging treatment for hydrating free CaO and/or free MgO is performed. Due to an action of the carbonating accelerator, the carbonation of a hydrate of CaO and/or MgO in the slug may be effectively accelerated to be able to shorten an aging period.SELECTED DRAWING: Figure 1
Inventors:
KOTO HIROYUKI
WATANABE TETSUYA
SUDO TATSUYA
WATANABE TETSUYA
SUDO TATSUYA
Application Number:
JP2019025646A
Publication Date:
August 31, 2020
Filing Date:
February 15, 2019
Export Citation:
Assignee:
JFE MINERAL CO LTD
International Classes:
C04B5/00; F27D15/00
Domestic Patent References:
| JP2002179442A | 2002-06-26 | |||
| JP2013006757A | 2013-01-10 | |||
| JPH0313517A | 1991-01-22 | |||
| JPH04254187A | 1992-09-09 | |||
| JPH03159938A | 1991-07-09 | |||
| JP2020132456A | 2020-08-31 |
Foreign References:
| CN103992054A | 2014-08-20 | |||
| WO2017163595A1 | 2017-09-28 |
Attorney, Agent or Firm:
Hideto Tomabechi