非标准钼精矿氧压煮法制取仲钼酸铵和高铼酸铵

THE PREPARATON OF AMMONIUM PARAMOLYBDATE AND AMM NIUM PERRHENATE FROM NON-STANDARDIZED MOLYBDENUM ORE CONCENTRATES BY OXYGEN DIGESTING PROCESS

本文着重研究氧压煮法、硝酸分解法和氯碱分解法处理同一非标准钼精矿。结果表明,上述方法技术上均可行。可获得较高的同一技术指标。综合对比,以酸性介质氧压煮为优;非标准钼精矿经酸性介质氧压煮接后续常规方法可制取MSA-2以上标准的仲钼酸铵和纯度为四个九的高铼酸铵.其原辅材料单耗与处理标准钼精矿相同。

Non-standardized molybdenum ore concentrates were processed by oxygen digesting, nitric acid decomposition and chloro-alkali decomposion processes resp. The results showed that these processes all were technically feasible and would lead to a relatively high technical index, with the oxygen digesting in a acidic medium being preferred. Ammonium paramolybdate at least meeting MSA-2 standard and high purity(99.99%) ammonium perrhenate can be prepared from the non-standardized molybdenum ore concentrates by oxygen digesting in a acidic medium followed by the conventional processing. The specific consumptions of the raw materials and accessory materials were found to be similar to those in the standardized concentrate processing.