Iron sulfide mixtures; iron sulfide heavy metal treating agents; and methods of treating using such agents

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专利权人:

TOSOH CORPORATION

发明人:

FUNAKOSHI HAJIME,TAKAHASHI MITSURU

申请号：

US20030668317

公开号：

US6906235(B2)

申请日:

2003.09.24

申请国别(地区):

美国

年份:

2005

代理人:

摘要：

Novel iron sulfides having excellent durability and excellent treating properties of heavy metals, processes for producing the iron sulfides, iron sulfide mixture, a heavy metal treating agent containing either of these novel iron sulfides as an effective component, and a method by which wastes containing various heavy metals are treated with the heavy metal treating agent are disclosed. The iron sulfide having a mackinawite structure which contains FeM_xN_yS_z wherein M represents an alkaline earth metal, N represents an alkali metal, and x, y and z, indicating the molar proportions of the respective elements, represent numbers satisfying 0.01

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