Document Type and Number:
Japanese Patent JP4938711
Kind Code:
B2
Abstract:
To provide a silicic fertilizer having effective constituents for both rice field farming and upland field farming and a raw material slag for the same.
A slag for fertilizer comprises 30-50 mass% of CaO, 20-40 mass% of SiO2, 8-30 mass% of MgO, and 1.0-15.0 mass% of Al2O3wherein the ratio CaO/SiO2is adjusted to not less than 0.8 and less than 1.4, and has an alkali content of not less than 56.3 mass%, the alkali content constituted by a refine slag generated by a refine process of at least one steel alloy selected from the group consisting of a stainless steel, a Fe-Ni alloy steel, and a Ni base alloy having a mineral phase containing not less than 30 vol% of merbinite (3CaO-MgO-2SiO2), 3-40 vol% of magnesia (MgO), and 3-40 vol% of spinel (MgO-Al2O3).
COPYRIGHT: (C)2008,JPO&INPIT
Inventors:
Hitoshi Sasaki
Hidekazu Todoroki
Application Number:
JP2008073094A
Publication Date:
May 23, 2012
Filing Date:
March 21, 2008
Assignee:
Nippon Yakin Kogyo Co., Ltd.
International Classes:
C05D9/00; C05D3/04; C05D5/00; C21C7/00; F27D15/02
Domestic Patent References:
| JP2004218065A | | | | |
| JP2006306696A | | | | |
| JP2002047083A | | | | |
Attorney, Agent or Firm:
Junzo Ogawa
Morio Nakamura
