Abstract
The low-grade bauxite, which is abundant in China, cannot be directly used in Bayer process. Flotation of low-grade bauxite is an effective way to improve the grade. Flotation experiments were carried out by using modified humics as depressant in this paper. The effects of pulp pH, collector dosage and depressant dosage were examined. Under the optimal flotation conditions with sodium oleate dosage of 2200 g/t, modified humics dosage of 10 g/t, pulp pH 10.0, the alumina to silica mass ratio (A/S) of flotation concentrate increased to 7.5. The recovery of aluminum minerals reached to 72.29%. Experiments results indicated that modified humics can be used as an effective depressant to improve A/S of low-grade bauxite.
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Acknowledgements
The authors acknowledge the financial supports of the National Science Fund of China (No. 51404213, No. 51404214, No. 51674225 and No. 51774252), Educational Commission of Henan Province of China (No. 17A450001, No. 18HASTIT011 and No. 18A450001) and the Development Fund for Outstanding Young Teachers of Zhengzhou University (No. 1421324065).
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Han, G., Yan, Z., Huang, Y., Dang, D. (2018). Flotation of Low-Grade Bauxite Using Modified Humics as Depressant. In: Martin, O. (eds) Light Metals 2018. TMS 2018. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-72284-9_26
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DOI: https://doi.org/10.1007/978-3-319-72284-9_26
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