Title:
METHOD OF MANUFACTURING ARTIFICIAL AGGREGATE
Document Type and Number:
Japanese Patent JP2009132564
Kind Code:
A
Abstract:
To provide aggregate in which the elution of 6-valent chromium is made small even when a raw material containing chromium is used.
The artificial aggregate is manufactured by firing an inorganic material. In the firing step at a temperature of 650C, the oxygen concentration in the vicinity of the boundary between a solid to be fired and a firing atmospheric gas is controlled to 10%.
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Inventors:
NOGUCHI MASAAKI
WACHI HIDEKI
WACHI HIDEKI
Application Number:
JP2007310118A
Publication Date:
June 18, 2009
Filing Date:
November 30, 2007
Export Citation:
Assignee:
TAIHEIYO MATERIAL KK
International Classes:
B09B3/00; C04B20/04; C04B14/02; C04B18/06; C04B18/08; C04B18/30; E01C3/00
Attorney, Agent or Firm:
Katsumi Utaka
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