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序言铼和钼的分离和回收存在于钼精矿加工过程中,也存在于某些含钼的沉积型铀矿石加工过程中。本文所阐述的规律和流程属于含钼的沉积型铀矿石综合利用技术领域,对钼精矿加工亦有参考价值。铼和钼在上述加工中已被浓集于氢氧化铵和碳酸铵溶液(简称铵溶液)中.本文用氯化三烷基甲基胺萃取法分离铵溶液中的铼和钼,铼浓集于首段有机相中,钼留在末段余液中。有机相中的铼用硫氰酸钾反萃取等方法回收,制铼酸钾。余液为铵溶液,其中的钼用硫酸中和结晶法回收,制钼酸铵。贫
Preface The separation and recovery of rhenium and molybdenum exist in the processing of molybdenum concentrates and also in the processing of some molybdenum-containing sedimentary uranium ores. The laws and processes described in this paper belong to the technical field of comprehensive utilization of molybdenum-containing sedimentary uranium ores and also have reference value for molybdenum concentrate processing. Rhenium and molybdenum have been concentrated in ammonium hydroxide and ammonium carbonate solution (referred to as ammonium solution) in the above processing.In this paper, three-alkylmethylamine extraction method was used to separate rhenium and molybdenum from ammonium solution, rhenium concentration In the first phase of the organic phase, molybdenum remains in the remaining liquid phase. The rhenium in the organic phase is recovered by potassium thiocyanate back-extraction and the like to make potassium rhenium. The remaining solution is ammonium solution, wherein the recovery of molybdenum by sulfuric acid and crystallization, ammonium molybdate. poor