METHOD FOR PRODUCING A POORLY SOLUBLE CALCIUM-ARSENIC COMPOUND
- 申请公布号：
- US2013341283(A1)
- 申请号：
- US201214003187
- 申请日期：
- 2012.03.07
- 申请公布日期：
- 2013.12.26
- 申请人：
- RIIHIMAEKI TEPPO;OUTOTEC OYJ
- 发明人：
- RIIHIMAEKI TEPPO
- 分类号：
- C02F1/52
- 主分类号：
- C02F1/52
- 摘要：
- The invention relates to a method for precipitating pentavalent calcium arsenate from an acidic solution, in which arsenic is at least partially in trivalent form. The acidic solution is neutralised before being routed to an arsenic oxidation stage,and a poorly soluble calcium-arsenic compound is precipitated from the solution, in which all the arsenic is pentavalent.
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