Study on synergistic adsorption effect of n-nonyl alcohol and styryl phosphoric acid upon the surface of rutile

Xingya WANG; Wei XIAO; Lijuan ZHANG; Xingyu GAO

doi:10.11889/j.0253-3219.2018.hjs.41.090501

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Study on synergistic adsorption effect of n-nonyl alcohol and styryl phosphoric acid upon the surface of rutile

NUCLEAR PHYSICS, INTERDISCIPLINARY RESEARCH | 更新时间：2021-05-19

- Study on synergistic adsorption effect of n-nonyl alcohol and styryl phosphoric acid upon the surface of rutile
- NUCLEAR TECHNIQUES Vol. 41, Issue 9, Article number: 090501(2018)
- 作者机构：
  
  1.中国科学院上海应用物理研究所嘉定园区上海 201800
  2.中国科学院大学北京 100049
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China
- DOI：10.11889/j.0253-3219.2018.hjs.41.090501
  CLC： TD952
- Received：02 April 2018，
  
  Revised：09 April 2018，
  
  Published：2018-09
- 稿件说明：
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Xingya WANG, Wei XIAO, Lijuan ZHANG, et al. Study on synergistic adsorption effect of n-nonyl alcohol and styryl phosphoric acid upon the surface of rutile[J]. Nuclear techniques, 2018, 41(9): 090501
DOI：

Xingya WANG, Wei XIAO, Lijuan ZHANG, et al. Study on synergistic adsorption effect of n-nonyl alcohol and styryl phosphoric acid upon the surface of rutile[J]. Nuclear techniques, 2018, 41(9): 090501 DOI： 10.11889/j.0253-3219.2018.hjs.41.090501.

摘要

苯乙烯膦酸（Styryl Phosphoric Acid，SPA）被认为是选择性最好的金红石浮选捕收剂之一。然而，高消耗和环境保护压力限制了它的大规模应用。本试验使用正壬醇（N-nonyl Alcohol，NNA）作为辅助捕收剂，用以减少SPA用量。实验结果表明：当SPA用作单一捕收剂且用量为0.8×10

-4

mol·L

-1

时，金红石精矿的最佳浮选回收率52.26%，品位约45%。当0.4×10

-4

mol·L

-1

的SPA和0.4×10

-4

mol·L

-1

的NNA用作混合捕收剂时，金红石精矿的回收率提高到82%，品位达到47%。通过泡沫性质测试、表面张力、Zeta电位测量和傅里叶变换红外光谱（Fourier Transform Infrared Spectrometer，FT-IR）分析研究了SPA和NNA在金红石表面的协同吸附机制，NNA显著增加泡沫量并提高了泡沫的稳定性，快速降低溶液的表面张力，SPA优先吸附在金红石表面，NNA通过与SPA形成氢键间接吸附在金红石表面。

Abstract

Background

Styryl phosphoric acid (SPA) is considered to be one of the best selective collectors for rutile flotation. However

high consumption and considerable environmental pressure have limited its wide applications.

Purpose

In this research

n-nonyl alcohol (NNA) was used as the auxiliary collector to reduce SPA dosage.

Results

The experimental results indicated that when SPA was used as the single collector

the rutile flotation presented an optimum index of recovery being 52.26% and the grade being about 45% with a SPA concentration of 0.8×10

-4

mol·L

-1

. But when 0.4×10

-4

mol·L

-1

SPA and 0.4×10

-4

mol·L

-1

NNA were used as the mixed collectors

the recovery increased to 82%

and the grade reached 47%. The obtained flotation indexes of the mixed collectors were obviously superior to those of the single collector

and the dosage of SPA in the mixed collectors was only half of that in the single collector.

Methods

The synergistic adsorption mechanism was investigated by Zeta potential measurements and Fourier Transform Infrared Spectrometer (FT-IR) analysis.

Conclusion

NNA increased the foam amount and improved its stability

and quickly reduced the surface tension of the solutions; SPA adsorbed first on the rutile surface

and NNA then bound to SPA by hydrogen bonding.

关键词

Keywords

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