蒸氨法制备绿铜锌矿晶体的工艺研究

人工晶体学报 ›› 2024, Vol. 53 ›› Issue (4): 701-706.

蒸氨法制备绿铜锌矿晶体的工艺研究

邱诗铭^1,2,3, 闫冠杰⁴, 李春流⁴, 王胜杰^1,2,3

1.广西民族师范学院,崇左 532200;
2.广西锰资源高值化利用重点实验室,崇左 532200;
3.崇左市锰资源综合利用技术重点实验室,崇左 532200;
4.南方锰业集团有限责任公司崇左分公司,崇左 532200

收稿日期:2023-10-31 出版日期:2024-04-15 发布日期:2024-04-19
通信作者: 王胜杰,博士,高级工程师。E-mail:sjwangcn@qq.com
作者简介:邱诗铭(1983—),男,江西省人,副教授。E-mail:84323374@qq.com
基金资助:
崇左市科技计划项目(崇科20220608);广西重点研发计划(桂科AB21220027)

Process of Preparing Aurichalcite by Ammonia Distillation Method

QIU Shiming^1,2,3, YAN Guanjie⁴, LI Chunliu⁴, WANG Shengjie^1,2,3

1. Guangxi Minzu Normal University, Chongzuo 532200, China;
2. Guangxi Key Laboratory for High-Value Utilization of Manganese Resources, Chongzuo 532200, China;
3. Chongzuo Key Laboratory of Comprehensive Utilization Technology of Manganese Resources, Chongzuo 532200, China;
4. Chongzuo Branch of South Manganese Group Limited, Chongzuo 532200, China

Received:2023-10-31 Online:2024-04-15 Published:2024-04-19

摘要/Abstract

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。

关键词: 蒸氨法, 工艺条件, 绿铜锌矿, 孔雀石, 晶体结构

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.

Key words: ammonia distillation method, process condition, aurichalcite, malachite, crystal structure

中图分类号:

TQ426

邱诗铭, 闫冠杰, 李春流, 王胜杰. 蒸氨法制备绿铜锌矿晶体的工艺研究[J]. 人工晶体学报, 2024, 53(4): 701-706.

QIU Shiming, YAN Guanjie, LI Chunliu, WANG Shengjie. Process of Preparing Aurichalcite by Ammonia Distillation Method[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2024, 53(4): 701-706.

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