CAJ | 학술논문

用草酸作为沉淀剂以氯化钕为原料生产氧化钕是较为传统的方法.近年来,有些企业为降低氧化钕的生产成本改用碳酸氢铵作为沉淀剂,用这种方法生产的氧化钕其部分物理性能达不到用户的要求.通过对草酸沉淀法制备氧化钕工艺进行研究,发现采用草酸与氨水混合沉淀剂制备氧化钕,得到的氧化钕产品的性能与单一用草酸作为沉淀剂得到的产品的性能完全相同.同时采用该方法与草酸沉淀法相比,制备每千克氧化钕其草酸单耗下降0.32 kg,氧化钕收率提高0.8%,生产每吨氧化钕产品其成本可降低3 240元,具有显著的经济效益.
용초산작위침정제이록화녀위원료생산양화녀시교위전통적방법.근년래,유사기업위강저양화녀적생산성본개용탄산경안작위침정제,용저충방법생산적양화녀기부분물이성능체불도용호적요구.통과대초산침정법제비양화녀공예진행연구,발현채용초산여안수혼합침정제제비양화녀,득도적양화녀산품적성능여단일용초산작위침정제득도적산품적성능완전상동.동시채용해방법여초산침정법상비,제비매천극양화녀기초산단모하강0.32 kg,양화녀수솔제고0.8%,생산매둔양화녀산품기성본가강저3 240원,구유현저적경제효익.
Using oxalic acid as precipitator and neodymium chloride as raw material to make neodymia (Nd2O3) is traditional method.In recent years,in order to reduce the cost of production,some enterprises selected ammonium hydrogen carbonate as precipitator.However,a part of physical properties of neodymia produced by this method can′t reach the consumer′s requirement.By means of making an intensive study on the technology about making neodymia via oxalic acid precipitation method,it was found that the product performances were totally identical while using mixed oxalic acid and ammonia as precipitator comparing with using single oxalic acid as precipitator.Meanwhile unit consumption of oxalic acid could be dropped by 0.32 kg/kg (Nd2O3),cost of production could be dropped by 3 240 yuan per ton,and yield of neodymia could be risen by 0.8%.So the method of using mixed precipitator has obvious economic benefits.