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Email this article OPTIMIZATION OF LATERITE ORE GRINDING PROCESS USING BALL MILL WITH RESPONSE SURFACE METHOD
Abstract
Dependence and interaction between several operating conditions that affect the grinding process using a ball mill such as the number of balls, grinding duration, and rotational speed on particle size at 80% product mass (P80) and mineral liberation have been obtained in this study using a CCD (central composite design) of response surface method (RSM). The grinding process was carried out in a cylindrical ball mill with a diameter and length of 18.6 cm and 21.5 cm, respectively, as well as a steel ball with a diameter of 2.5 cm and a weight of 100 grams/ball. The optimum data for the grinding process was obtained with the smallest response value of P80. It was known that the number of balls and grinding duration have a significant effect on the reduction of the P80 value in the sample. The model that can describe the influence of process variables on the P80 value was obtained with good accuracy. The character of the mineral content of the sample was observed with the X-Ray Diffraction (XRD) pattern and the elemental concentration. Minerals that have a smaller hardness scale are easier to liberate and more exposed. The P80 value of the initial material was 1560.89 µm, while at the optimum condition the P80 grinding process was reduced to 513.29 µm.
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Kementerian Energi dan Sumber Daya Mineral, Indonesian Minerals Year Book 2018. Jakarta: Kementerian Energi dan Sumber Daya Mineral, 2018. Accessed: Nov. 12, 2021. [Online]. Available: https://geologi.esdm.go.id/assets/media/content/content-indonesian-minerals-yearbook-2018.pdf
S. Stopic and B. Friedrich, ‘Hydrometallurgical processing of nickel lateritic ores’, Vojnotehnicki glasnik, vol. 64, no. 4, pp. 1033–1047, 2016,
E. Petrakis and K. Komnitsas, ‘Improved modeling of the grinding process through the combined use of matrix and population balance models’, Minerals, vol. 7, no. 5, pp. 67–84, Apr. 2017,
J. V. Nava, T. Llorens, and J. M. Menéndez-Aguado, ‘Kinetics of dry-batch grinding in a laboratory-scale ball mill of Sn–Ta–Nb minerals from the Penouta mine (Spain)’, Metals, vol. 10, no. 12, pp. 1687–1706, Dec. 2020,
R. Zhao, Y. Han, M. He, and Y. Li, ‘Grinding kinetics of quartz and chlorite in wet ball milling’, Powder Technology, vol. 305, pp. 418–425, Jan. 2017,
H.-I. Yoo, ‘Diffusion in Continuum’, in Lectures on Kinetic Processes in Materials, Cham: Springer International Publishing, 2020, pp. 1–16.
L. Tong, B. Klein, M. Zanin, K. Quast, W. Skinner, J. Addai-Mensah, and D. J. Robinson, ‘Stirred Milling of Nickel Laterites For Selective Comminution’, in SAG Conference, 2015, no. September, pp. 1–20.
E. Petrakis, V. Karmali, and K. Komnitsas, ‘Factors affecting nickel upgrade during selective grinding of low-grade limonitic laterites’, Mineral Processing and Extractive Metallurgy, vol. 130, no. 3, pp. 192–201, Sep. 2018,
I. Ani, J. Okafor, M. Olutoye, and U. Akpan, ‘Optimization of base oil regeneration from spent engine oil via solvent extraction’, Advances in Research, vol. 4, no. 6, pp. 403–411, 2015,
Z. N. Garba, I. Bello, A. Galadima, and A. Y. Lawal, ‘Optimization of adsorption conditions using central composite design for the removal of copper (II) and lead (II) by defatted papaya seed’, Karbala International Journal of Modern Science, vol. 2, no. 1, pp. 20–28, 2016,
E. Sasikumar and T. Viruthagiri, ‘Optimization of process conditions using response surface methodology (RSM) for ethanol production from pretreated sugarcane bagasse: kinetics and modeling’, BioEnergy Research, vol. 1, no. 3–4, pp. 239–247, 2008,
J. Bayuo, M. A. Abukari, and K. B. Pelig-Ba, ‘Optimization using central composite design (CCD) of response surface methodology (RSM) for biosorption of hexavalent chromium from aqueous media’, Applied Water Science, vol. 10, no. 6, pp. 135–147, Jun. 2020,
C. S. Sridhar, P. S. Sankar, and R. K. Prasad, ‘Grinding kinetics, modeling, and subsieve morphology of ball mill grinding for cement industry ingredients’, Particulate Science and Technology, vol. 34, no. 1, pp. 1–8, 2016,
T. S. Yusupov, E. A. Kirillova, and L. G. Shumskaya, ‘Mineral hardness effect on the combined mineral grinding’, Journal of Mining Science, vol. 43, no. 4, pp. 450–454, 2007,
T. P. Olejnik, ‘Selected mineral materials grinding rate and its effect on product granulometric composition’, Physicochemical Problems of Mineral Processing, vol. 49, no. 2, pp. 407–418, 2013,
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