中和沉淀法从锌锗浸出液中制备锗精矿  

Preparation of Germanium Concentrate from Zinc-germanium Leaching Solution

作　　者：杨睿潇 付维琴 周建泉 刘俊场 李小英 牟兴兵 杨振 林琳 YANG Ruixiao;FU Weiqin;LIU Junchang;LI Xiaoying;MOU Xingbin;YANG Zhen;LIN Lin;无(Kunming Metallurgical Research Institute Co.,Ltd.,Kunming,Yunnan 650031,China;Yunnan Key Laboratory for New Technology of Beneficiation and Metallurgy,Kunming,Yunnan 650031,China;Nanhua Maosheng Regenerative Technology Co.,Ltd.,Chuxiong,Yunnan 676299,China)

机构地区：[1]昆明冶金研究院有限公司,云南昆明650031 [2]云南省选冶新技术重点实验室,云南昆明650031 [3]南华茂森再生科技有限公司,云南楚雄675299

出　　处：《云南冶金》2024年第3期89-93,共5页Yunnan Metallurgy

基　　金：云南省重大科技专项计划(202202AB080005);云南省重点研发计划(202203AA080005);云南省科技人才与平台计划-技术创新人才培养对象项目(202305AD160053)。

摘　　要：针对单宁沉淀法回收锗存在的锗含量低、单宁酸过量等问题,采用“预中和-两段中和沉淀法”从锌锗浸出液中分离富集回收锗,研究了两段中和沉淀过程中中和剂种类、中和剂用量、超声波加入时间等因素对锗沉淀率的影响。结果表明:在温度85℃,中和剂1碱式碳酸锌用量为理论量0.8倍,一段中和时间为60 min,中和剂2氢氧化钠用量为理论量1.3倍,超声波功率密度为20 W/cm^(2),频率为25 kHz,二段中和时间为120 min的条件下,锗的沉淀率达99%,制备的锗精矿含锗≥2.44%。For problems that exist in germanium recovery by tannin precipitation method,Such as low content of germainum,overdose of tannin acid and so on,the"pre-neutralization-two-stage neutralization and precipitation method"is adopted for separating,enriching and recycling germanium from zinc-germanium liquid solution,it studied the effect of the following factors on germanium precipitation rate,which are neutralizer types,dosage,ultrasonic addition time and other factors in two-stage neutralization and precipitation process.The results show:that when the temperature is 85℃,the basic zinc carbonate dosage of neutralizer 1 is 0.8 times of theoretical quantity,the neutralization time of one-stage is 60 min,the sodium hydroxide dosage of neutralizer 2 is 1.3 times of theoretical quantity,ultrasonic power density is 20 W/cm^(2),the frequency is 25 kHz,when the neutralization time of two-stage is 120 min,the precipitation rate of germanium can reach 99%,and the germanium content in prepared germanium concentrate≥2.44%.

关 键 词：中和沉淀 锌锗浸出液 中和剂 超声波 锗精矿 

分 类 号：TQ134.31[化学工程—无机化工]