Effect of Grinding Media on the Preparation of Rougher Flake Graphite Concentrate
Authors
-
Mechanical Operation Lab, School of Chemical Engineering, VIT (Vellore Institute of Technology) University, Vellore – 632014, Tamil Nadu, India. ,IN
V Bhadra Rao Koruprolu -
Mechanical Operation Lab, School of Chemical Engineering, VIT (Vellore Institute of Technology) University, Vellore – 632014, Tamil Nadu, India. ,INGnanasundaram Nirmala
DOI:
https://doi.org/10.18311/jmmf/2023/33753Keywords:
Rod Mill, Grinding Media, Rods, Cylindrical Metallic Pebbles, Rougher Flotation.Abstract
Protecting the coarse-flake graphite is one of the most important tasks during the grinding of graphite ore because coarse-flake graphite is more valuable than fine-flake graphite. The graphite ore sample contains 14.50% FC, 71.82% ash, and 13.68% volatile matter + moisture content. In the present study, the test work has been carried out on the graphite ore to maximize the recovery of rougher coarse flake graphite in a rod mill by varying the grinding media such as (i) rods, (ii) cylindrical metallic pebbles and (iii) combination of rods and cylindrical metallic pebbles in the weight ratio of 1:1, followed by rougher flotation. The effect of various flotation parameters such as a Mesh of Grind (MOG), pH, and dosages of Sodium silicate, Kerosene, and Methyl Isobutyl Carbinol (MIBC) on rougher flotation was carried out, and optimal parameters were also established. A comparative study of varying grinding media followed by rougher flotation at optimal parameters was carried out concerning the grade and recovery of coarse flaky graphite. The results indicated that the rod mill grinding with rods as a grinding media followed by rougher flotation of mill products produced a better grade (43.74% FC) and recovery (43.3%) of rougher coarse flaky graphite concentrate as compared to the other two grinding media.
Downloads
Metrics
Downloads
Published
How to Cite
Issue
Section
License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
References
Chehreh Chelgani S, Rudolph M, Kratzsch R, Sandmann D, and Gutzmer J. (2016): A Review of Graphite Beneficiation Techniques, Miner. Process. Extr. Metall. Rev, 37(1): 58–68.
Acharya B.C, Rao D.S, Prakash S, and Reddy P. S. R. (1996): Processing of Low-Grade Graphite Ores of Orissa, India, Minerals Engineering, Vol.9 (II): 1165-1169.
Mitchell, C. J. (1993): Technical report WG/92/30 on Flake Graphite, British Geological Survey. Natural Environment Research Council, Nottingham. (1993): 1-31.
Dey S, Pathak P. N. (2005): Comparative studies of amenability to processing of graphite from different sources, Transactions Indian Institute of Metals, 58: 905-910.
Wissler M. (2006): Graphite and carbon powders for electrochemical applications, J. Power Sources, 156(2): 142–150.
Tamashausky A.V. (1998): Graphite,Am. Ceram. Soc. Bull., 77(12): 102–104.
Asbury Carbons. Natural Flake Graphite [Internet]. Available online: http://asbury.com/technical-presentations papers/materials-in-depth/natural-flake-graphite.
Xie Z. (2005): Study on protecting flaky graphite concentration, China Non-Met. Min. Ind. Her., 1: 0-10.
Long Y, Zhang G.W, Li Z.Q, Xiao X. (2013): Research progress of the protecting large flaky graphite, China Non-Met. Min. Ind. Her., 2: 0-16.
Yue C. (2002): Study on the damage of large-scale flaky graphite and new grinding-flotation process, Non-Met. Mines., 25: 36–37.
Simba K.P, M. H. Moys. (2014): Effects of mixtures of grinding media of different shapes on milling kinetics, Miner. Eng., 61: 40–46.
Ding S. F. Niu Y. P. (2013): Research on purification technics of some flake graphite, Adv. Mater. Res., 753–755: 119–123.
Al-Ani T, Leinonen S, Ahtola T, Salvador D. (2020): High-grade flake graphite deposits in metamorphic schist belt, central Finland – mineralogy and beneficiation of graphite for lithium-ion battery applications, Minerals,10(8): 1–16.
Barma S. D, Baskey P.K, Rao D. S, Sahu and S. N. (2019): Ultrasonic-assisted flotation for enhancing the recovery of flaky graphite from low-grade graphite ore, Ultrason. Sonochem., 56: 386–396.
Oney O, Samanli, S. (2016): Determination of optimal flotation conditions of low-grade graphite ore, E3S Web of Conferences. 8, 01002(2016).
Biplab Kumar, Bidisha Das, Amit Garain, Summi Rai, Wasefa Begum, Md. Inamuddin, Monohar Hossain Mondal, Ajaya Bhattarai and Bidyut Saha (2022): Diverse utilization of surfactants in coal-floatation for the sustainable development of clean coal production and environmental safety: a review, RSC Adv., 12: 23973–23988.
Xuexia Wang, Xiangning Bu, Chao Ni, Shaoqi Zhou, Xiaolin Yang, Jing Zhang, Muidh Alheshibri, Yaoli Peng, Guangyuan Xie (2021): Effect of scrubbing medium’s particle size on scrubbing flotation performance and mineralogical characteristics of microcrystalline graphite, Minerals Engineering, 163: 106766.
Fangyuan Ma, Dongping Tao, Youjun Tao , Shuyong Liu (2021): An innovative flake graphite upgrading process based on HPGR stirred grinding mill, and nanobubble column flotation, International Journal of Mining Science and Technology, 31: 1063–1074.
Jara A.D, Betemariam A, Woldetinsae G, Kim J.Y. (2019): Purification, application, and current market trend of natural graphite: A review, Int. J. Min. Sci. Technol., 29(5): 671–689.
Fenfen Fenda Florenaa, Fahmi Syarifuddin, Eko Sulistio Hanam, Nici Trisko, Eko Kustiyanto, Enilisiana, Anton Rianto, and Ghenadi Arinton. (2015): Floatability Study of Graphite Ore from Southeast Sulawesi (Indonesia), 2nd Padjadjaran International Physics Symposium 2015 (PIPS-2015) AIP Conf. Proc. 1712, 050005-1–050005-6.
V. Bhadra Rao Koruprolu, Gnanasundaram Nirmala (2022): Development of process flow scheme on a low-grade calcareous graphite ore by split flotation technique, Separation Science and Technology: 1-11. DOI: 10.1080/01496395.2022.2136575.
Vasumathi G. B. R. N, Vijaya Kumar T.V, Nayak1 B, Subba Rao S, Prabhakar S. (2014): Beneficiation of Low-Grade Graphite Ore of Eastern India by Two-Stage Grinding and Flotation, N. J. Min. Metall., 50A (1): 9–17.
