摘要
本文以粗二氧化碲为原料,加入到氢氧化钠溶液中在60~80℃加热条件下搅拌反应,反应完后将溶液进行过滤除杂,滤去不溶性的杂质,所得滤液中加入助剂配制成含Te 200~230(g/L),NaOH 90~100(g/L),Se<0.3(g/L),Pb<0.003(g/L)的电解液。然后将配制好的电解液放入电解槽中,设置电解槽电流密度为50A/m^(2),电解沉积时间120~144 h。将在阴极板上析出的碲刮下并用纯水洗涤至中性,放入真空干燥箱中进行干燥。干燥好的电解碲进行熔融、扒渣、真空铸型等工序制得碲锭,得到的碲锭经检测分析其品级可达到4 N及以上。
In this paper,crude tellurium dioxide as raw material,added to sodium hydroxide solution at 60~80℃ heating conditions stirring reaction,after the reaction,the solution is filtered to remove impurities,filter to remove insoluble impurities,the filtrate obtained by adding additives to prepare containing Te 200~230(g/L),NaOH 90~100(g/L),Se<0.3(g/L),Pb<0.003(g/L)electrolyte.Then put the prepared electrolyte into the electrolytic cell,set the current density of the electrolytic cell to 50A/m^(2),electrolytic deposition time 120~144h.The tellurium precipitated on the cathode plate is scraped and washed with pure water to neutral,and then dried in a vacuum drying oven.Tellurium ingot was prepared by melting,slag scraping and vacuum casting of dried electrolytic tellurium.The obtained tellurium ingot can reach 4N or above after testing and analysis.
作者
许顺磊
张辛潔
彭戴
游立
常意川
Xu Shunlei;Zhang Xinjie;Peng dai;You li;Chang Yichuan(Wuhan Institute of Marine Electric Propulsion,Wuhan 430064,China)
出处
《船电技术》
2024年第4期37-40,共4页
Marine Electric & Electronic Engineering
关键词
二氧化碲
氢氧化钠
电流密度
电解沉积
tellurium dioxide
sodium hydroxide
current density
electrolytic deposition
