土壌改良材 - jfe Steel Corporation

Title:

土壌改良材

Document Type and Number:

Japanese Patent JP5769920

Kind Code:

B2

Abstract:

To provide a soil conditioner utilizing a steel slag, reducing a hazardous property of a harmful substance such as hexavalent chromium by reducing effect of the steel slag and effectively improving environmental safety of the soil.

The soil conditioner includes the steel slag having a total Fe content of 15 mass% or more, an FeO content of 10 mass% or more and a CaO/SiO2(mass ratio) of ≥2 and <5 and preferably having a metal Fe content of ≥1 mass%. Reducing ability by iron and iron oxide can be sufficiently exhibited while suitably suppressing effect of an obstructive anion by feeding a sufficient amount of Ca from the steel slag.

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Inventors:

Katsunori Takahashi
Hiroyuki Tobo
Kazuya Yabuta
Masafumi Kitatsuji

Application Number:

JP2009246227A

Publication Date:

August 26, 2015

Filing Date:

October 27, 2009

Export Citation:

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Assignee:

jfe Steel Corporation
Public University Corporation Miyagi University

International Classes:

B09B3/00; C09K17/02; B09C1/02; B09C1/08

Domestic Patent References:

JP2008049327A
JP2003181493A
JP2006055724A
JP2005152781A
JP2006028380A
JP2006305464A
JP2004267817A
JP4059889A

Attorney, Agent or Firm:

Hideto Tomabechi

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