氧化镁作为沉淀剂制备氢氧化镍钴产品的沉淀结晶试验  

Precipitation Crystallization Experiment of Magnesium Oxide as a Precipitant for the Preparation of Nickel Cobalt Hydroxide Products

作　　者：张伟 ZHANG Wei(China Nonferrous Metal Mining(Group)Co.,Ltd.,Beijing 100029,China)

机构地区：[1]中国有色矿业集团有限公司,北京100029

出　　处：《有色矿冶》2024年第5期35-39,共5页Non-Ferrous Mining and Metallurgy

摘　　要：根据海外某公司生产工艺中采用氢氧化钠作为沉淀剂来生产氢氧化镍钴产品,在生产过程中存在沉淀结晶、干燥脱水等有关工艺问题,造成产品含水率高,进而使得产品海外运回中国的运输成本过高,开展了氢氧化镍钴结晶和干燥工艺研究,在不改变现有生产工艺主流程的前提下,拟探索研究以氧化镁作为沉淀剂制备氢氧化镍钴产品,降低产品的含水率。通过系统的实验研究,以国外某氧化镁作为沉淀剂得到的氢氧化镍钴产品中Ni、Co的含量略有下降,产品含水率得到显著下降,有进一步用于工业应用的可能。During the nickel cobalt hydroxide production,there are process issues such as precipitation crystallization and drying dehydration when using sodium hydroxide as a precipitant,resulting in high moisture content of the products and thus high transportation costs.The crystallization and drying process of nickel cobalt hydroxide have been researched,under the condition of no changing the main production process,explore using magnesium oxide as a precipitant to produce nickel cobalt hydroxide,thus reducing the moisture content of products.Through systematic experimental research,the content of Ni and Co in the nickel cobalt hydroxide product has slightly decreased by using a foreign magnesium oxide as the precipitant,but the significant decreasing of the moisture content in the product,which has a potential for further industrial applications.

关 键 词：氧化镁 氢氧化镍钴 沉淀结晶 含水率 

分 类 号：TF822[冶金工程—有色金属冶金]