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硼精矿加压碱解制备水合偏硼酸钠
殷保稳; 秦士跃; 张亦飞; 张懿
2014
Source Publication过程工程学报
Issue02Pages:258-265
Abstract采用NaOH-H2O体系加压溶出硼精矿制备水合偏硼酸钠.正交实验结果表明,影响硼溶出的因素顺序为,碱浓度>时间>液固比>温度.考察了初始NaOH溶液浓度、液固比、反应时间、反应温度、矿石粒度和搅拌速度对硼溶出的影响,最优条件[初始NaOH浓度25%(ω)、液固比4:1(ω)、反应时间2 h、反应温度140℃、搅拌速度500 r/min、高压釜表压0.2 MPa]下,硼转化率达95.91%.湿硼泥经三级逆流浆化洗涤(各级洗涤温度90℃、洗水与湿硼泥质量比3:1、时间1 h)可实现Na2O和B2O3的高效回收,烘干的终硼泥Na2O和B2O3含量分别为0.35%和0.45%(ω),含42.91%(ω)MgO的终硼泥可作为提镁的优质原料.溶出液添加CaO苛化并高温放置陈化脱色除杂,再降温至25~30℃,恒温结晶6 h后抽滤,结晶率大于70%,晶体用无水乙醇、饱和偏硼酸钠溶液洗涤,40℃烘干12 h,物相为NaB(OH)4,纯度约为90%.
Keyword硼精矿 Naoh 溶出 逆流浆化洗涤 结晶 偏硼酸钠
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/10669
Collection研究所(批量导入)
Recommended Citation
GB/T 7714
殷保稳,秦士跃,张亦飞,等. 硼精矿加压碱解制备水合偏硼酸钠[J]. 过程工程学报,2014(02):258-265.
APA 殷保稳,秦士跃,张亦飞,&张懿.(2014).硼精矿加压碱解制备水合偏硼酸钠.过程工程学报(02),258-265.
MLA 殷保稳,et al."硼精矿加压碱解制备水合偏硼酸钠".过程工程学报 .02(2014):258-265.
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