IRON ARSENATE POWDER

The invention provides an iron arsenate powder prepared from an arsenic-containing solution and exhibiting an extremely low elution concentration. The iron arsenate powder is a powder of iron arsenate dihydrate which has a mean particle size of 8µm or above, preferably 10µm or above, a content of pa...

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Bibliographic Details
Main Authors TAGUCHI, RYOICHI, FUJITA, TETSUO
Format Patent
LanguageEnglish
French
Published 13.11.2012
Subjects
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OFSOLID INORGANIC COMPOUNDS
INORGANIC CHEMISTRY
METALLURGY
TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
TECHNICAL SUBJECTS COVERED BY FORMER USPC
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Summary:The invention provides an iron arsenate powder prepared from an arsenic-containing solution and exhibiting an extremely low elution concentration. The iron arsenate powder is a powder of iron arsenate dihydrate which has a mean particle size of 8µm or above, preferably 10µm or above, a content of particles of 5µm or below in size of 10% or below, preferably 5% or below, and a BET specific surface area of 2m2/g or below, preferably 0.5m2/g or below. The amounts of calcium and magnesium contained as impurities are each 2% by mass or below.
Bibliography:Application Number: CA20072656724