蒸氨法制备绿铜锌矿晶体的工艺研究
Process of Preparing Aurichalcite by Ammonia Distillation Method
邱诗铭 1闫冠杰 2李春流 2王胜杰1
作者信息
- 1. 广西民族师范学院,崇左 532200;广西锰资源高值化利用重点实验室,崇左 532200;崇左市锰资源综合利用技术重点实验室,崇左 532200
- 2. 南方锰业集团有限责任公司崇左分公司,崇左 532200
- 折叠
摘要
本文以碱式碳酸铜、碱式碳酸锌和浓氨水为原料,采用蒸氨法合成绿铜锌矿.通过XRD、TGA、SEM-Mapping、FT-IR等表征手段,研究工艺条件对绿铜锌矿晶体结构的影响规律.实验表明,铜浓度为120 g/L,铜锌摩尔比分别为3∶2、1∶1、2∶3时,沉淀产物中的晶体由绿铜锌矿与孔雀石组成,且孔雀石数量随铜锌摩尔比的降低而减少.当铜锌摩尔比为2∶3,铜浓度由120 g/L降低至80 g/L时,孔雀石晶体的数量进一步减少.在铜锌摩尔比为2∶3,铜浓度为80 g/L的条件下,沉淀得到单一物相的绿铜锌矿晶体,为蒸氨法控制合成绿铜锌矿提供了数据支撑.
Abstract
In this paper,aurichalcite was synthesized by ammonia distillation method,using basic copper carbonate,basic zinc carbonate and concentrated ammonia as raw materials.The effects of process conditions on the crystal structure of aurichalcite were studied by XRD,TGA,SEM-Mapping and FT-IR.It is demonstrated that when the copper concentration is fixed at 120 g/L,and the molar ratios of copper to zinc are set at 3∶2,1∶1 and 2∶3,respectively,the crystals in the precipitation product consist of aurichalcite and malachite.As the molar ratio of copper to zinc decrease,the number of malachite crystals decrease.When the molar ratio of copper to zinc is 2∶3,a further reduction in the number of malachite crystals is observed when the copper concentration reduce from 120 g/L to 80 g/L.Finally,under the condition that the molar ratio of copper to zinc is 2∶3 and the copper concentration is 80 g/L,single-phase aurichalcite crystals are precipitated.This provides basic data for controlling the synthesis of aurichalcite by ammonia distillation method.
关键词
蒸氨法/工艺条件/绿铜锌矿/孔雀石/晶体结构Key words
ammonia distillation method/process condition/aurichalcite/malachite/crystal structure引用本文复制引用
基金项目
崇左市科技计划(崇科20220608)
广西壮族自治区重点研发计划(桂科AB21220027)
出版年
2024
国家科技期刊平台
NSTL
万方数据