磁选富集含铁磷矿中高铁的测定  

Determination of ferric ion in iron-containing phosphate rock by magnetic beneficiation

作　　者：冯晓军[1] 陈丹红[1] 胡莲珍[1] 

机构地区：[1]云天化云南磷化集团有限公司研发中心,云南昆明650113

出　　处：《磷肥与复肥》2008年第6期70-71,共2页Phosphate & Compound Fertilizer

摘　　要：含铁磷矿通过弱磁选可以得到氧化铁含量大于50%的高铁精矿。实验用王水分解含高铁磷矿微沸加热20 min,含高铁磷矿可溶解完全。用铁铝不分离EDTA容量法直接测定氧化铁,此方法测得结果与重铬酸钾容量法分析结果相符,说明方法可靠。The high iron-containing phosphate rock with iron oxide content more than 50%, can be obtained by the low intensity magnetic beneficiation of iron-containing phosphate rock. The experiment with aqua regia decomposing high iron-containing phosphate rock is processed under the slight boiling 20 minutes, which results in the completely soluble high iron-containing phosphate rock. The EDTA volumetric method with nondisjunction of aluminum and iron is used for direct determining iron oxide, and the determination results are consentaneous compared with the potassium bichromate volumetric method. The EDTA volumetric method is reliable.

关 键 词：弱磁选 高铁磷矿 测定氧化铁 EDTA容量法 

分 类 号：TQ440.72[化学工程—化学肥料工业]