摘要
以硫酸钴、氢氧化钠为原料,EDTA为络合剂,采用液相法合成了大颗粒类球形Co3O4。结果表明:在氢氧化钠溶液浓度为10 mol/L、硫酸钴溶液浓度为90 g/L、p H=10、温度为60℃、空气流量为8.0m3/h条件下,能够得到表面形貌规则、平均粒径(D50)为8.6μm、振实密度为2.35 g/cm3、松装密度为1.12 g/cm3的大颗粒类球形Co3O4。实验用氢氧化钠代替传统的碳酸盐,并通过改进反应釜结构、配置四象限变频器等途径,保证了生产连续进行、无氨氮污染以及产品性能稳定。
Large-grained Co304 was prepared by liquid phase method using CoSO_4 and NaOH as raw materials and EDTA as complexing agent. The results show that the product of large-grained spheroidal Co_3O_4 with regular surface morphology, average particle size （D_50） of 8.6 μm, tap density of 2.35 g/cm^3 and bulk density of 1.12 g/cm^3 can be obtained under the condition of NaOH content of 10 mol/L, COSO_4 concentration of 90 g/L, pH of I0, temperature of 60℃ and air flow rate of 8.0m^3/h. Continuous production, no ammonia pollution and stable performance were ensured by using sodium hydroxide instead of traditional carbonates, improving the reactor structure and collocating four-quadrant inverter.
出处
《金属材料与冶金工程》
CAS
2014年第5期3-6,9,共5页
Metal Materials and Metallurgy Engineering
基金
科技部国际合作项目(2014DFA90520)
国家自然科学基金(51104181
NO.51234009)
关键词
液相法
CO3O4
连续生产
liquid phase method
Co3O4
continuous production
作者简介
通讯作者简介：郭学益（1966－），男，博士，教授，从事有色金属资源循环利用及材料制备研究。
