Effects of alkyl ether amine and calcium ions on fine quartz flotation and its guidance for upgrading vanadium from stone coal

Ren, Liuyi1; Qiu, Hang1; Zhang, Yimin1; Nguyen, Anh V.2; Zhang, Ming1; Wei, Penggang1; Long, Qiurong3

2018-10

10.1016/j.powtec.2018.07.026

POWDER TECHNOLOGY   影响因子和分区

0032-5910

1873-328X

Great progress has been made in reverse flotation of fine quartz, especially many new reagents were proved their excellent effects. However, the influences of complex flotation system on fine quartz flotation still need to be scrutinized. In this study, alkyl ether amine (Flotigam EDA-C from Clariant) was used as a collector for the flotation of quartz. It shows better collectability for the flotation of quartz at about pH 10.0 (+/- 0.2). The adsorption mechanism of EDA-C on quartz and the influence of calcium ions on the flotation of quartz were investigated by adsorption tests, zeta-potential measurements, FTIR spectra measurements, X-ray photoelectron spectroscopic and atomic force microscopy imaging. Results show that EDA-C adsorbs on the quartz surface in physical adsorption with no new products, changing its zeta potentials and increasing its hydrophobicity. Calcium ion concentration of 20 mg/L, 40 mg/L, 60 mg/L and 1 g/L can inhibit the quartz surface strongly and decrease its recovery sharply. Inhibition action of 2 g/L Ca2+ decreased, even disappeared when the collector concentration increased to 90 mg/L Calcium ions changed the chemical environment of Si atoms and Ols on the quartz surface. After positively charged CaOH+ adsorbed on quartz surface, the amount of EDA-C adsorbed on quartz surface and the recovery decreased. It was greatly inspired to explore quartz separation application from these results. (C) 2018 Elsevier B.V. All rights reserved.

Quartz flotation Calcium ion Adsorption mechanism Cationic collector

SCI ; EI

英语

其他

China Scholarship Council[201706955031]

Engineering

Engineering, Chemical

WOS:000447569200021

ELSEVIER SCIENCE BV

20182905553925

Adsorption ; Atomic force microscopy ; Calcium ; Ethers ; Flotation ; Fourier transform infrared spectroscopy ; Ions ; Photoelectron spectroscopy ; Vanadium ; Zeta potential

Minerals:482.2 ; Vanadium and Alloys:543.6 ; Alkaline Earth Metals:549.2 ; Optical Devices and Systems:741.3 ; Chemistry:801 ; Colloid Chemistry:801.3 ; Chemical Operations:802.3 ; Organic Compounds:804.1

CHEMISTRY

Web of Science

1.Wuhan Univ Technol, Coll Resources & Environm Engn, Wuhan 430070, Hubei, Peoples R China
2.Univ Queensland, Sch Chem Engn, Brisbane, Qld 4072, Australia
3.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

Ren, Liuyi,Qiu, Hang,Zhang, Yimin,et al. Effects of alkyl ether amine and calcium ions on fine quartz flotation and its guidance for upgrading vanadium from stone coal[J]. POWDER TECHNOLOGY,2018,338:180-189.

Ren, Liuyi.,Qiu, Hang.,Zhang, Yimin.,Nguyen, Anh V..,Zhang, Ming.,...&Long, Qiurong.(2018).Effects of alkyl ether amine and calcium ions on fine quartz flotation and its guidance for upgrading vanadium from stone coal.POWDER TECHNOLOGY,338,180-189.

Ren, Liuyi,et al."Effects of alkyl ether amine and calcium ions on fine quartz flotation and its guidance for upgrading vanadium from stone coal".POWDER TECHNOLOGY 338(2018):180-189.