Title:
セメント製造方法
Document Type and Number:
Japanese Patent JP7383545
Kind Code:
B2
Abstract:
To provide a manufacturing method of cement which reduces CO2 discharge amount while using a large amount of waste and can flexibly deal according to a kind and an amount of the waste to be treated.SOLUTION: A method for manufacturing cement by reacting a waste containing 5 mass% or larger of CaO with CO2, and using a part or all of the resulting carbonate as a cement mixture. While the waste material containing 5 mass% or larger of CaO is reacted with CO2, followed by separating into a material containing calcium carbonate and a material containing aluminosilicate, and a part of at least any one or all can be used as the cement mixture. Furthermore, blast furnace slag or/and fly ash may be used as a cement mixture. Among the material containing calcium carbonate and the material containing aluminosilicate, the material that was not used as the cement mixture can be used as a cement clinker raw material.SELECTED DRAWING: Figure 1
Inventors:
Yusuke Kirino
Shunichiro Uchida
Sora Hirao
Shunichiro Uchida
Sora Hirao
Application Number:
JP2020057589A
Publication Date:
November 20, 2023
Filing Date:
March 27, 2020
Export Citation:
Assignee:
Taiheiyo Cement Co., Ltd.
International Classes:
C04B7/24; C04B7/147; C04B7/19; C04B7/26; C04B18/06; C04B18/08; C04B18/14; C04B18/16; C04B22/08; C04B22/10
Domestic Patent References:
| JP2004261658A | ||||
| JP2010001196A | ||||
| JP5238790A | ||||
| JP8268737A | ||||
| JP2008239359A | ||||
| JP2005262205A | ||||
| JP9059050A | ||||
| JP2014117636A | ||||
| JP2014051433A | ||||
| JP2019123653A |
Attorney, Agent or Firm:
Jun Nakai
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