聚丙烯酸钠对蛇纹石浮选的影响及其机理

陈志强; 郑明宇; 彭铁锋

doi:10.3969/j.issn.1000-6532.2022.02.018

聚丙烯酸钠对蛇纹石浮选的影响及其机理

西南科技大学环境与资源学院, 四川　绵阳　621010

基金项目: 国家自然科学基金资助项目（51874219）

详细信息

作者简介: 陈志强（1994-）男，硕士研究生，矿物加工专业

通讯作者: 彭铁锋（1983-）男，博士，教授，硕士研究生导师，研究方向为矿物加工工程

中图分类号: TD952

收稿日期: 2020-07-15

刊出日期: 2022-04-25

Effect and Mechanism of Sodium Polyacrylate on Flotation of Serpentine

School of Environment and Resource, Southwest University of Science and Technology, Mianyang, Sichuan , China

More Information

Corresponding author: Peng Tiefeng, pengtiefeng@cqu.edu.cn

Received Date: 15 July 2020

Publish Date: 25 April 2022

摘要

摘要:
通过浮选实验、Zeta电位测试、红外光谱分析和SEM-EDS分析等方法，系统地研究了聚丙烯酸钠（PAAS）对蛇纹石浮选行为及其表面性质的影响，并探讨其机理。浮选结果表明，添加抑制剂聚丙烯酸钠能有效抑制蛇纹石上浮，在加入24.7 mg/L的聚丙烯酸钠后，蛇纹石的浮选回收率由36%下降到10%；Zeta电位测试结果表明，聚丙烯酸钠能够显著降低蛇纹石的表面电荷；红外光谱和SEM-EDS分析结果表明聚丙烯酸钠在蛇纹石表面有明显的化学吸附。机理研究分析表明，聚丙烯酸钠通过与蛇纹石表面上的Mg²⁺作用对蛇纹石产生絮凝作用，改变蛇纹石颗粒的分散状态，从而实现对蛇纹石颗粒的有效抑制。
- 抑制剂 /
- 蛇纹石 /
- 聚丙烯酸钠 /
- 抑制
Abstract:
Effect of sodium polyacrylate (PAAS) on the flotation and surface properties of serpentine was studied systematically by means of flotation test, Zeta potential test, Infrared spectral (IR) and SEM-EDS analysis. The flotation results showed that the addition of the depressant sodium polyacrylate could effectively depress the flotation of serpentine, and the recovery of serpentine decreased from 36% to 10% after the addition of 24.7 mg/L sodium polyacrylate. Zeta potential test results showed that sodium polyacrylate could significantly reduce the surface charge of serpentine.Infrared spectral (IR) and SEM-EDS analysis showed that sodium polyacrylate had obvious chemical adsorption on serpentine surface.The mechanism analysis shows that sodium polyacrylate can flocculate serpentine by interacting with the Mg²⁺ on the serpentine surface, and change the dispersion state of serpentine particles, thus effectively depressing the serpentine particles.
- Depressant /
- Serpentine /
- PAAS /
- Depress

HTML全文

图 1 pH值对蛇纹石浮选回收率的影响

Figure 1.

下载: 全尺寸图片幻灯片

图 2 聚丙烯酸钠用量对蛇纹石浮选回收率的影响

Figure 2.

下载: 全尺寸图片幻灯片

图 3 蛇纹石颗粒与聚丙烯酸钠相互作用前后的Zeta电位

Figure 3.

下载: 全尺寸图片幻灯片

图 4 聚丙烯酸钠作用前后蛇纹石红外光谱

Figure 4.

下载: 全尺寸图片幻灯片

图 5 蛇纹石样品的SEM-EDS分析

Figure 5.

下载: 全尺寸图片幻灯片

表 1 蛇纹石化学分析结果/%

Table 1. Chemical compositions of serpentine

Fe MgO SiO Al₂O₃ CaO 其他

2.80 36.82 50.33 0.64 4.35 5.06

下载: 导出CSV

参考文献(12)

[1]	龙涛. 硫化铜镍矿浮选中镁硅酸盐矿物强化分散—同步抑制的理论及技术研究[D]. 长沙: 中南大学, 2012. LONG T. Study on the theory and technology of the enhanced dispersion and synchronous inhibition of magnesium silicate minerals in the flotation of Cu-Ni sulfide [D]. Changsha: Central South University, 2012.
[2]	廖凯. 包钢不同生产工艺的镁质球团矿试验研究[D]. 呼和浩特: 内蒙古科技大学, 2014. LIAO K. Experimental study on magnesium pellet of Baotou Steel with different production processes [D]. Hohhot: Inner Mongolia University of Science and Technology, 2014.
[3]	冯博, 朱贤文, 彭金秀. 羧甲基纤维素对微细粒蛇纹石的絮凝及抑制作用[J]. 硅酸盐通报, 2016, 35(5):1367-1371. FENG B, ZHU X W, PENG J X. Flocculation and inhibition of carboxymethyl cellulose on fine serpentine[J]. Chinese journal of silicate, 2016, 35(5):1367-1371.
[4]	熊学广. 利用络合剂—抑制剂组合降低金川镍矿精矿中氧化镁含量研究[D]. 武汉: 武汉理工大学, 2013. XIONG X G. Study on the reduction of magnesium oxide content in Jinchuan nickel concentrate by complexation-inhibitor combination [D]. Wuhan: Wuhan University of Technology, 2013.
[5]	Chen Y, Zhang G, Shi Q, et al. Utilization of tetrasodium iminodisuccinate to eliminate the adverse effect of serpentine on the flotation of pyrite[J]. Minerals Engineering, 2020(150):106235.
[6]	D Liu, G Zhang, G Huang, Y Gao, M Wang, The flotation separation of pyrite from serpentine using lemon yellow as selective depressant, Colloids and Surfaces a-Physicochemical and Engineering Aspects. 2019(581): 25-33
[7]	Tao Long, Xiaotao Huang, Wei Xiao. The effect of surface charge on the separation of pyrite from serpentine by flotation[J]. MDPI, 2019, 9(10):29-47.
[8]	Guangjiu Pan, Guofan Zhang, Qing Shi, Wei Chen. The effect of sodium alginate on chlorite and serpentine in chalcopyrite flotation[J]. MDPI, 2019, 9(3):123-136.
[9]	曹永丹, 曹钊, 张亚辉等. Cu(Ⅱ)、Ni(Ⅱ)离子在蛇纹石表面的吸附及对其浮选的影响[J]. 工程科学学报, 2016, 38(4):461-467. CAO Y D, CAO Z, ZHANG Y H, et al. Cu(Ⅱ), Ni (Ⅱ) ion in the serpentine surface adsorption and the effect on the flotation of[J]. Journal of engineering science, 2016, 38(4):461-467.
[10]	B Feng, W Zhang, Y Guo, T Wang, G. Luo, H. Wang, G. He, The flotation separation of galena and pyrite using serpentine as depressant, Powder Technology 2019(342): 486-490.
[11]	Y Chen, G Zhang, Q Shi, D Liu, Effect of chlorite on the flotation of pyrrhotite and its implications for elimination by different methods, Separation Science and Technology 2019(54): 1411-1419.
[12]	李治杭, 韩跃新, 李艳军, 等. 六偏磷酸钠对蛇纹石作用机理分析[J]. 矿产综合利用, 2016(4):52-55. doi: 10.3969/j.issn.1000-6532.2016.04.012 LI Z H, HAN Y X, LI Y J, et al. Analysis on the mechanism of action of sodium hexametaphosphate on serpentine[J]. Multipurpose Utilization of Minerals, 2016(4):52-55. doi: 10.3969/j.issn.1000-6532.2016.04.012