第18卷第4期 2018年8月
反应与分离
过程工程学报
The Chinese Journal of Process Engineering
Vol.18 No.4 Aug.2018
DOI: 10.12034/j.issn.1009-606X.217353
Leachingprocessofboronfromboronconcentratebysodiumbicarbonatesolution
Yuhua LI-2,Shengyang KUANG,Yifei ZHANG',Jing BO'2,Pengfei LIU2,LicongDENG 1. Key Laboratory of Green Process and Engineering, National Engineering Laoratory of Hydrometallurgy Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
2. Schoolof Chemistry and Chemical Engineering, University ofChinese Academy ofSciences, Beijing 00049, China 3. Liaoning Shougang Boron Iron Co., Ltd., Dandong, Liaoning 118100, China
Abstract: Leaching process of B from calcined boron concentrate in NaHCOs solution was studied. The effects of mass ratio of liquid to solid, sodium bicarbonate consumption, reaction temperature, time and stirring speed on leaching of boron were examined. The results showed that under the optimum conditions of mass ratio of liquid to solid of 2.1:1, sodium bicarbonate consumption of theoretical amount of 150%, leaching temperature of 100C leaching time of 1 h, stirring speed of 400 r/min, leaching rate of B reached 92.88%. The morphology of calcined boron concentrate is mainly columnar and flat crystal, which is attached with some small particles. The boron sludge is a lot of little crystals that stack together, and the particle size of boron sludge is smaller., Therefore, it is speculated that leaching process of B from calcined boron concentrate in NaHCO3 solution can be described by the shrinking core model. The major phases in the calcined boron concentrate were suanite, lizardite, phlogopite and olivine, and with the suanite phase disappearing, the major phases in the boron sludge were MgCOs and NazMg(COs)2
Key words: sodium bicarbonate;boron concentrate; leaching; final boron sludge;morphology NaHCO3溶液浸出硼精矿中硼的工艺
李玉花12，况盛阳3，张亦飞"，薄婧12，刘鹏飞12，邓立聪1
1.中国科学院过程工程研究所绿色过程与工程重点实验室，湿法治金清洁生产技术国家工程实验室，北京100190
2.中国科学院大学化学与化工学院，北京100049 3.辽宁首钢铁有限责任公司，辽宁丹东118100
摘要：研究了NaHCO，溶液提取硼精矿熟料中硼的工艺，考察了液固比、NaHCO,用量、浸出温度、浸出时间和搅拌速率对硼提取率的影响，结果表明，最佳提取工艺条件为液固质量比2.1:1，NaHCO用量为理论用量的150%，反应温度100℃C，反应时间1h，搅拌速率400r/min，该条件下硼浸出率达92.88%.硼精矿熟料的晶形大多是柱状和扁平状，并有微小颗粒附着其表面；终硼泥为很多小晶体堆叠在一起，与硼精矿熟料相比，终硼泥颗粒变小，因此可用收缩核模型描述硼精矿熟料中霸在NaHCO 溶液中的浸出过程，金云母、遂安石、利蛇纹石和橄榄石是硼精矿熟料的主要物相，而终硼泥出现了MgCO:和NazMg(COs)2物相，遂安石消失，
关键词：NaHCO：硼精矿；漫出：终硼泥：形貌
文献标识码：A
中图分类号：TQ128*.5;TF803.2
1
前言
文章编号：1009606X(2018)04071006
殊，兼具金属和非金属的化学性质(2.3)，被称为工业味精，广泛应用于传统材料和高新材料中1.4-8，我国硼矿资源
硼(B)是地球地壳中很重要的元素()，其化学性质特
储量较大，主要分布在吉林、辽宁、青海和西藏，其中
收稿：20171009,修回; 20171207，网络发表：20180426,Reeived: 20171009,Revised:20171207,Published online: 20180426
作者简介：李玉花(1992-)，女，山东省滨州市人，硕士研究生，化学工程专业；张亦飞，通讯联系人，Tel:010-82544826,E-mail:yfzhang@ipe.ac.cn 引用格式：李玉花，况盛阳，张亦飞，等.NaHCO,落液漫出硼精矿中硼的工艺.过程工程学报，2018,18(4)：710-715
rate by sodium bicarbonate solution (in Chinese)
LiH,KuangSY,ZhangE,et al.
firombo
Chin. J. Process Eng-, 2018, 18(4): 710715, DOI: 10.12034/j.ssn.1009-606X.217353.
万方数据