磷矿反浮选回水体系中难免离子对浮选行为的影响

周兴杰; 梁欢; 朱倪; 胡大勇; 何东升

doi:10.3969/j.issn.1000-6532.2024.01.021

磷矿反浮选回水体系中难免离子对浮选行为的影响

1.
武汉工程大学　资源与安全工程学院，湖北　武汉　430073

基金项目: 湖北省技术创新专项对外科技合作类（X19S012）；湖北省尾矿（渣）资源化利用工程技术研究中心项目（ZYYD201900072）

详细信息

作者简介: 周兴杰（1999-），男，本科，主要从事选矿工艺与理论研究

通讯作者: 梁欢（1986-），男，博士，副教授，主要从事矿物分离过程强化工作

中图分类号: TD97

收稿日期: 2021-05-27

刊出日期: 2024-02-25

Effect of Inevitable Ions in Phosphate Reverse Flotation Return Water Systems on Flotation Behavior

1.
School of Resources Safety Engineering, Wuhan Institute of Technology, Wuhan 430073, Hubei, China

More Information

Corresponding author: LIANG Huan, zfslianghuan@163.com

Received Date: 27 May 2021

Publish Date: 25 February 2024

摘要

摘要:
这是一篇矿业工程领域的论文。氟磷灰石及白云石在反浮选酸性介质中易溶解出Ca²⁺及Mg²⁺，并在回水循环过程中存在“累积效应”，对浮选指标造成不良影响。本实验以氟磷灰石、白云石及石英三种单矿物为研究对象，研究了不同循环次数的回水对三种单矿物浮选回收率的影响，研究表明，当pH值为5，循环次数达到3次后，白云石与氟磷灰石回收率差值由72.21 %降低为64.19 %，石英的回收率基本维持10%左右；而循环次数达到5次时，白云石与氟磷灰石回收率差值略微回升为69.74 %，石英的回收率略微降至11.22 %。本研究通过测定回水循环体系下离子溶出量、矿物表面的Zeta电位以及矿物表面的离子吸附量等分析手段，揭示了不同循环次数的回水中溶解离子对三种单矿物的作用机理。
- 矿业工程 /
- 氟磷灰石 /
- 反浮选 /
- 回水 /
- 难免离子
Abstract:
This is an article in the field of mining engineering. Ca²⁺ and Mg²⁺ are easily dissolved from fluorapatite and dolomite in the acid medium of reverse flotation, and there is a "cumulative effect" in the process of backwater circulation, which has an adverse effect on the flotation indexes. Taking fluorapatite, dolomite and quartz as the research objects, the effect of different recycle times of backwater on the flotation recovery of three single minerals was studied. The results showed that when pH value was 5, the recovery difference between dolomite and fluorapatite decreased from 72.21% to 64.19%, and the recovery of quartz maintained at about 10%; When the number of cycles reached 5, the recovery difference between dolomite and fluorapatite slightly increased to 69.74%, and the recovery of quartz slightly decreased to 11.22%. In this study, the mechanism of dissolved ions in backwater for three kinds of single minerals was revealed by measuring the number of dissolved ions, zeta potential of mineral surface and ions adsorption capacity of mineral surface under backwater circulation system.
- Mining engineering /
- Fluorapatite /
- Reverse flotation /
- Backwater /
- Inevitable ion

HTML全文

图 1 不同矿物浮选回收率与 pH 值关系

Figure 1.

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图 2 回水循环体系中溶出离子对单矿物浮选回收率的影响

Figure 2.

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图 3 回水循环体系中单矿物表面溶出离子浓度

Figure 3.

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图 4 (a)磷酸盐悬浮液中离子浓度与pH值的关系；(b)白云石悬浮液中离子浓度与pH值的关系

Figure 4.

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图 5 回水循环体系中溶出离子对单矿物Zeta电位的影响

Figure 5.

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图 6 回水循环体系中矿石表面的捕收剂吸附量的变化

Figure 6.

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图 7 回水体系中难免离子作用于矿物后的扫描电镜

Figure 7.

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