ARSENIC-CONTAINING SOLID AND METHOD FOR PRODUCING IT
    51.
    发明申请
    ARSENIC-CONTAINING SOLID AND METHOD FOR PRODUCING IT 有权
    含有固体的固体及其生产方法

    公开(公告)号:US20100044631A1

    公开(公告)日:2010-02-25

    申请号:US12531132

    申请日:2008-03-13

    IPC分类号: C09K3/00

    摘要: Provided is an arsenic-containing solid comprising 100 parts by mass of a scorodite-type iron-arsenic compound and at least 1 part by mass of an iron oxide compound added thereto, in which the scorodite-type iron-arsenic compound is produced by adding an oxidizing agent to an aqueous acidic solution that contains a 5-valent arsenic (V) ion and a 2-valent iron (II) ion, then promoting the precipitation of an iron-arsenic compound with stirring the liquid, and finishing the precipitation thereof within a range where the pH of the liquid is at most 1.2. The iron oxide compound includes goethite, hematite and their mixture, preferably having a BET specific surface area of at least 3 m2/g, more preferably at least 20 m2/g.

    摘要翻译: 本发明提供一种含有砷的固体,其含有100质量份的臭葱石型铁砷化合物和至少1质量份的添加了氧化铁的化合物,其中通过添加臭葱石型铁砷化合物 一种含有5价砷(V)离子和2价铁(II)离子的酸性水溶液的氧化剂,然后搅拌该液体促进铁砷化合物的沉淀,并完成其沉淀 在液体的pH为1.2以下的范围内。 氧化铁化合物包括针铁矿,赤铁矿及其混合物,其BET比表面积优选至少为3m 2 / g,更优选至少为20m 2 / g。