发明名称 |
FERRIC ARSENATE POWDER |
摘要 |
<p>Provided is a ferric arsenate powder which is produced from an arsenic-containing solution, and from which arsenic is eluted at an extremely low concentration. The ferric arsenate powder is a powder of ferric arsenate dehydrate, has an orthorhombic crystal structure, and has the following lattice constants at ambient temperature and ambient pressure: a = 0.8950 to 0.8956 nm, b = 1.0321 to 1.0326 nm, and c= 1.0042 to 1.0050 nm. The ferric arsenate powder is produced by adding a bivalent iron ion to an arsenic-containing solution so that the molar ratio of arsenic to iron (Fe/As) in the solution becomes 1 or greater, adding an oxidizing agent to the mixed solution, heating the mixed solution to a temperature of 70°C or higher while agitating to cause the reaction, separating the reaction solution into a solid material and a liquid, and washing the solid material.</p> |
申请公布号 |
WO2009028636(A1) |
申请公布日期 |
2009.03.05 |
申请号 |
WO2008JP65474 |
申请日期 |
2008.08.22 |
申请人 |
DOWA METALS & MINING CO., LTD.;FUJITA, TETSUO;NAKAMURA, TAKASHI;SUZUKI, SHIGERU;SHINODA, KOZO |
发明人 |
FUJITA, TETSUO;NAKAMURA, TAKASHI;SUZUKI, SHIGERU;SHINODA, KOZO |
分类号 |
C01G49/00;C01G28/00;C02F1/62 |
主分类号 |
C01G49/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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