碳酸钠沉淀法合成高纯碱式碳酸镍的热力学分析  

Thermodynamic Analysis of the High Pure Basic Nickel Carbonate Prepared by Sodium Carbonate Precipitating Method

作　　者：张志华[1] 赵海涛[1] 

机构地区：[1]长沙矿冶研究院有限责任公司,湖南长沙410012

出　　处：《金属材料与冶金工程》2013年第2期22-25,共4页Metal Materials and Metallurgy Engineering

摘　　要：通过对Ni2＋-CO23--OH--H2O体系的热力学分析,拟出该体系中的lg[Ni2＋]～pH关系图。并以碳酸钠为沉淀剂,在镍离子浓度为50g/L,进料速度为500mL/h,Na2CO3的浓度为120g/L,反应温度55℃,pH=8.30,搅拌强度为500r/min,停留时间25～30h的条件下能够制得高纯碱式碳酸镍。By means of thermodynamic analyzing to Ni2＋-CO23--OH--H2O system, a lg[Ni2＋]～pH graph in this system was obtained. With sodium carbonate act as the precipitating agent, in the condition of nickel ion concentration of 50 g/L, charging velocity of 500 mL/h, the concentrating of sodium carbonate of 120 g/L, reaction temperature of 55 ℃, pH value of 8.30, agitating intensity of 500 r/min and residence time of 25 - 30 hours, can prepare high pure basic nickel carbonate.

关 键 词：热力学分析 碱式碳酸镍 沉淀 

分 类 号：TQ138.13[化学工程—无机化工]