Effect of sodium chlorite on surface modification and flotation behavior of ilmenite

Zhang Yun; Ye Guohua; Hu Yujie; Xiang Xinyue; Rong Yiyang; Song Changxu

doi:10.7513/j.issn.1004-7638.2024.02.014

Volume 45 Issue 2

Feb. 2024

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Zhang Yun, Ye Guohua, Hu Yujie, Xiang Xinyue, Rong Yiyang, Song Changxu. Effect of sodium chlorite on surface modification and flotation behavior of ilmenite[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(2): 94-101. doi: 10.7513/j.issn.1004-7638.2024.02.014

Citation:

Zhang Yun, Ye Guohua, Hu Yujie, Xiang Xinyue, Rong Yiyang, Song Changxu. Effect of sodium chlorite on surface modification and flotation behavior of ilmenite[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(2): 94-101. doi: 10.7513/j.issn.1004-7638.2024.02.014

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Effect of sodium chlorite on surface modification and flotation behavior of ilmenite

doi: 10.7513/j.issn.1004-7638.2024.02.014

Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China

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Received Date: 2023-12-05
Available Online: 2024-04-30
Publish Date: 2024-04-30

Abstract

Abstract

The surface modification of ilmenite with sodium chlorite was carried out to enhance the adsorption effect of collector. The mechanism of sodium chlorite modification was investigated by microflotation test and zeta potential. The results of microflotation test showed that the recovery of ilmenite in sodium oleate system was greatly improved after sodium chlorite modification, and the optimal conditions were sodium oleate concentration of 1.54×10⁻⁴ mol/L, sodium chlorite concentration of 80 mg/L and pH=8. When pH was 5-10, under the simultaneous action of sodium chlorite and sodium oleate, the zeta potential of ilmenite tended to be more negative than that of sodium oleate-treated ilmenite, demonstrating that the adsorption of sodium oleate on the surface of ilmenite was increased. The effects of interaction between inhibitor sodium silicate, collector sodium oleate and oxidant sodium chlorite on TiO₂ grade and recovery in titanium concentrate were analyzed by response surface method, and then the reagent system was optimized. Under the conditions of 160 g/t water glass, 110 g/t sodium oleate and 220 g/t sodium chlorite, the actual grade and recovery of TiO₂ in titanium concentrate were 33.92% and 86.30%, which were close to the predicted results, indicating that the response model has high reliability. Finally, through the closed-circuit test on this basis, good indexes of titanium concentrate grade 48.24% and recovery 62.55% were obtained.
- ilmenite,
- sodium chlorite,
- surface modification,
- response surface,
- recovery rate

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References(24)

References

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