赤铁矿与石英浮选溶液化学与药剂作用机制研究进展

荆茂晨; 安登极; 王纪镇

doi:10.13779/j.cnki.issn1001-0076.2023.06.015

赤铁矿与石英浮选溶液化学与药剂作用机制研究进展

1.
长沙矿冶研究院有限责任公司，湖南长沙 410000

2.
西安科技大学化学与化工学院，陕西西安 710054

详细信息

作者简介: 荆茂晨（2000—），男，陕西渭南人，在读研究生，主要从事低品质矿产资源综合利用，E-mail：maochenjing1@163.com

通讯作者: 安登极(1982—)，男，湖南邵阳人，教授级高级工程师，硕士研究生导师,主要从事选矿技术及装备研究，E-mail：79868750@qq.com。

中图分类号: TD91；TD923⁺.1；TD951.1

收稿日期: 2023-10-07

刊出日期: 2023-12-25

Research Progress on Flotation Solution Chemistry and Mechanism of Reagents of Hematite and Quartz

1.
Changsha Research Institute of Mining and Metallurgy Co., Ltd, Changsha 410000, China

2.
College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an 710054, China

More Information

Corresponding author: AN Dengji, 79868750@qq.com

Received Date: 07 October 2023

Publish Date: 25 December 2023

摘要

摘要:
石英是赤铁矿选别过程中的常见脉石矿物，目前主要应用高效浮选药剂和反浮选工艺实现赤铁矿和石英的有效分离。从矿物晶体各向异性、浮选药剂构效关系和药剂吸附机制等方面，介绍了赤铁矿和石英的浮选化学机制研究现状，阐述了淀粉及其衍生物与铁矿石的作用机理及吸附机制，以及钙离子活化石英浮选的机理；总结了常用高效捕收剂的种类、性能与构效关系；最后，展望了高效浮选药剂理论研究的发展趋势，以期为赤铁矿与石英高效分选理论、工艺研究提供参考。
- 赤铁矿 /
- 石英 /
- 晶体化学 /
- 各向异性 /
- 表面性质 /
- 浮选药剂
Abstract:
Quartz is commonly encountered as a gangue mineral in the separation process of hematite. Currently, effective separation of hematite from quartz is primarily achieved using high−efficiency flotation reagents and reverse flotation processes. The current research status of the flotation chemical mechanism of hematite and quartz is introduced in this article from the perspectives of mineral crystal anisotropy, structure−activity relationship of flotation agents, and adsorption mechanism of agents. The mechanism and adsorption mechanism of starch and its derivatives with iron ore, as well as the activation mechanism of calcium ions on quartz, are expounded in this paper. The types, properties, and structure−activity relationships of commonly used high−efficiency collectors are also listed. Finally, the development trend of theoretical research on high−efficiency flotation agents is anticipated in this paper, in order to provide a reference for the study of efficient separation theory and technology of hematite and quartz.
- hematite /
- quartz /
- crystal chemistry /
- anisotropic /
- surface properties /
- flotation reagent

HTML全文

图 1 赤铁矿晶体结构（左图）及其X射线衍射图（右图）

Figure 1.

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图 2 α−赤铁矿晶体结构与(001)、 (012)、 (100)、 (101)和 (110)面^[12]

Figure 2.

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图 3 赤铁矿(104)面水化界面模型^[7]

Figure 3.

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图 4 无水赤铁矿(001)面(左)、羟基化赤铁矿(001)表面(右)水滴扩散图^[8]

Figure 4.

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图 5 石英表面结构模型^[18]

Figure 5.

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图 6 直链淀粉（左图）和支链淀粉（右图）分子结构

Figure 6.

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表 1 α−赤铁矿表面能E_surf、断裂键数目和断裂键密度D_b^[12]

Table 1. Values of Surface energy E_surf, number of broken bonds and broken bonding density (D_b) calculated for α−Fe₂O₃

表面	E_surf/(J·m⁻²)	断裂键数目	面积/nm²	断裂键密度D_b/nm⁻²
(001)−Fe	1.145	12	0.2196	54.65
(012)	1.056	8	0.2733	29.27
(100)	1.369	28	0.6923	40.44
(101)	1.306	12	0.2421	49.57
(110)	1.230	8	0.3997	20.01
(001)−O	0.782	9	0.2196	40.99

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