Flotation Depression of Arsenopyrite Using Sodium Nitrobenzoate under Alkaline Conditions
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Methods
2.2.1. Micro-Flotation Tests
2.2.2. FTIR Measurements
2.2.3. XPS Measurements
2.2.4. Electrochemical Measurements
3. Results and Discussion
3.1. Arsenopyrite Flotation Experiments
3.2. FTIR Analysis
3.3. XPS Analysis
3.4. Electrochemical Analysis
4. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Element | Fe | As | S | Si | Zn | Al | Ca | Mn | K | P |
---|---|---|---|---|---|---|---|---|---|---|
Content (wt.%) | 34.93 | 47.12 | 14.88 | 1.37 | 0.64 | 0.51 | 0.48 | 0.03 | 0.03 | 0.01 |
Apy | Apy + NaBX | Wavenumber/cm−1 | Functional Groups | Bonding Properties | |
---|---|---|---|---|---|
Apy + m-NBO | Apy + m-NBO + NaBX | ||||
3436 | 3436 | 3438 | 3436 | O–H bending vibrations | water (adsorbed water) |
1630 | 1626 | 1629 | 1630 | O–H bending vibrations | water (adsorbed water) |
/ | / | 1404, 1387 | 1405, 1388 | –NO2 symmetrical stretching vibration | m-NBO |
/ | 1382 | / | / | –CH3 bending vibrations | NaBX |
/ | 1112 | / | 1116 | C=S stretching vibration | NaBX |
1049 | 1053 | 1083 | 1033 | SO42− stretch vibration | Apy |
871 | / | 829 | / | As–O stretching vibration | Apy |
580 | 601 | 612 | 607 | Fe–O stretching vibration | Apy |
431 | 431 | 433 | 434 | O–As–O bending vibrations | Apy |
Chemical State | BE/eV | FWHW | Atomic/% | ||||||
---|---|---|---|---|---|---|---|---|---|
Apy | Apy + NaBX | Apy + m-NBO | Apy + m-NBO + NaBX | Apy | Apy + NaBX | Apy + m-NBO | Apy + m-NBO + NaBX | ||
Fe2+–AsS | 707.3 | 707.1 | 707.3 | 707.0 | 1.0 | 35 | 43 | 29 | 41 |
Fe2+–(Fe–O) | 709.6 | 709.4 | 709.5 | 709.6 | 2.7 | 20 | 19 | 20 | 16 |
Fe3+(Fe–O) | 711.7 | 711.6 | 711.8 | 711.7 | 2.6 | 45 | 38 | 51 | 43 |
As−1–S | 41.3 | 41.1 | 41.3 | 41.2 | 1.0 | 39 | 33 | 26 | 34 |
As0 | 42.1 | 41.8 | 42.0 | 41.9 | 1.0 | ||||
As3+–O | 44.2 | 44.0 | 44.1 | 44.2 | 1.7 | 23 | 26 | 17 | 33 |
As5+–O | 45.5 | 45.4 | 45.5 | 45.5 | 1.8 | 38 | 41 | 57 | 33 |
or S=S | 162.3 | 162.2 | 162.3 | 162.1 | 1.1 | 71 | 74 | 60 | 62 |
or S=C | 163.6 | 163.2 | 163.5 | 163.4 | 1.1 | ||||
S0 or S=S | 164.8 | 164.0 | 164.8 | 164.8 | 1.4 | 11 | 11 | 18 | 23 |
or S–S | 166.1 | 165.3 | 166.1 | 165.9 | 1.4 | ||||
168.3 | 168.1 | 168.5 | 167.9 | 1.9 | 18 | 15 | 22 | 15 | |
169.6 | 169.3 | 169.8 | 169.2 | 1.9 |
Electrode | Corrosion Potential Ecorr (mV) | Corrosion Current Icorr (μA/cm2) |
---|---|---|
Apy | −95.5 | 8.49 |
Apy + NaBX | −100.5 | 10.47 |
Apy + m-NBO | −101.9 | 8.99 |
Apy + m-NBO + NaBX | −165.0 | 7.31 |
Electrode | Corrosion Potential Ecorr (mV) | Corrosion Current Icorr (μA/cm2) |
---|---|---|
Apy | −228 | 2.22 |
Apy + NaBX | −201 | 2.64 |
Apy + m-NBO | −219 | 2.92 |
Apy + m-NBO + NaBX | −205 | 2.49 |
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Sun, X.; Wu, B.; Hu, M.; Qiu, H.; Deng, J.; Cai, J.; Jin, X. Flotation Depression of Arsenopyrite Using Sodium Nitrobenzoate under Alkaline Conditions. Minerals 2021, 11, 1216. https://0-doi-org.brum.beds.ac.uk/10.3390/min11111216
Sun X, Wu B, Hu M, Qiu H, Deng J, Cai J, Jin X. Flotation Depression of Arsenopyrite Using Sodium Nitrobenzoate under Alkaline Conditions. Minerals. 2021; 11(11):1216. https://0-doi-org.brum.beds.ac.uk/10.3390/min11111216
Chicago/Turabian StyleSun, Xiaohao, Bozeng Wu, Mingzhen Hu, Hongxin Qiu, Jiushuai Deng, Jiaozong Cai, and Xiaoli Jin. 2021. "Flotation Depression of Arsenopyrite Using Sodium Nitrobenzoate under Alkaline Conditions" Minerals 11, no. 11: 1216. https://0-doi-org.brum.beds.ac.uk/10.3390/min11111216