偏钒酸镁制备工艺的初探.PDFVIP

偏钒酸镁制备工艺的初探 任 俊 （攀钢集团钒业有限公司 攀枝花 中国 617023 ） 摘 要 因偏钒酸镁在化工、新型材料、光电领域有着重要的用途，通过探索研究精钒渣、偏钒酸铵、五氧化二钒 分别与镁盐反应制备偏钒酸镁的可行性，使用偏钒酸铵和镁盐反应能制取得到含偏钒酸镁的溶液，将其蒸发浓缩 待溶液饱和析出得到偏钒酸镁晶体。 试验结果表明，偏钒酸铵与六水氯化镁按摩尔比 2:1 混合溶于水中，加热至 70~80 ℃ ，待溶液充分反应后过滤，将滤液低温蒸发可得偏钒酸镁结晶。 关键词 偏钒酸镁 水溶反应 蒸发结晶 中图分类号 TF646.4 文献标识码 B 文章编号 1001-1943 （2016 ）06-0019-05 STUDY ON THE PREPARATION TECHNOLOGY OF MAGNESIUM METAVANADATE Ren jun （Panzhihua Vanadium Industry Co., Ltd., Panzhihua 617023, China ） Abstract Because magnesium metavanadate has important applications in chemical industry, new materials and opto-electronic field, through exploring and researching the feasibility that fine vanadium slag, ammonium metavanadate, vanadium pentoxide react with magnesium salt respectively to prepare magnesium metavanadate, it can get the liquor containing magnesium metavanadate by making vanadium and magnesium ammonium react. By evaporating and concentrating its solution, the crystal of magnesium is obtained until the liquor is saturated. The results show that ammonium metavanadate and magnesium chloride hexahydrate at a molar ratio of 2:1 mixture is dissolved in water. To heat the solution to 70 ~80 ℃ until thoroughly reaction, then filtrating it, magnesium metavanadate crystallization is available after low temperature evaporation. Keywords magnesium metavanadate ， aqueous reaction ， evaporative crystallization 前言 取工艺的探索，对开发新产品有积极作用。 钒酸镁 盐按反应条件的不同可生成正钒酸镁、 焦钒酸镁、 偏钒酸镁是一种重要的钒酸盐，主要用于陶瓷 偏钒酸镁。 钒酸镁盐中最主要的、应用最多的是偏 染料、合成洗涤剂配方、纺织品染色、分散剂、助溶