Effect of blunging process on purification of halloysite ore from ferrous impurities by dry magnetic separation

• Autorzy: Durgut Emrah , Çınar Mustafa , Boylu Feridun , Ozdemir Orhan

Identyfikatory

DOI

10.37190/ppmp/187186

• Języki publikacji: EN

Abstrakty

EN

The objective of this research is to study the effects of feed particle size, splitter angle, and washing process on Fe2O3 removal efficiency in the separation of ferrous impurities from halloysite ore by dry magnetic separation in order to increase the purity of halloysite sample after crushing and blunging processes separately. Firstly, after crushing ore in a jaw crusher and sizing to -2+1 mm, -1+0.5 mm, and -0.5+0.212 mm fractions, the sized materials were fed to REMS-type dry magnetic separator at a constant belt speed of 300 rpm with the splitter angles of 0, 15, 30º separately. Maximum Fe2O3 removal efficiency (FRE) (97.1%) was obtained in the nonmagnetic product at -0.5+0.212 mm size fraction and 0º splitter angle. The minimum Fe2O3 content (1.3%) was reached in the nonmagnetic product obtained in the experiment with the feed size of -2+1 mm and a splitter angle of 0º. Secondly, dry magnetic separation was applied to the washed -2+0.212 mm size fraction after drying at room temperature to evaluate the coarse particle-sized halloysite ore that was gained by mechanical dispersion in the aqueous medium towards sodium hexametaphosphate (SHMP), while a significant part of the clay minerals went into fine size after the dispersion process. In the experiment performed with a 0º splitter angle after washing, it was determined that halloysite concentrate of 0.4% Fe2O3 content could be obtained with 98.8% Fe2O3 removal efficiency. As a result of dry magnetic separation experiments, it was seen that Fe2O3 removal efficiency decreased as the splitter angle increased, while Fe2O3 content in magnetic and nonmagnetic products increased. It was determined that washing and cleaning of finesized minerals plastered on particle surfaces after mechanical dispersion and particle release of minerals with different magnetic properties increased the dry magnetic separation efficiency, and nonmagnetic products with very low Fe2O3 (0.4%) and high Al2O3 (31.9%) content was obtained. The blunging process in the presence of dispersant caused the dispersion of clay minerals and allowed to liberating of the ferrous minerals from the halloysite ore, hence the increase in the FRE for the magnetic separation.

Słowa kluczowe

EN

halloysite; dry magnetic separation; particle size; splitter angle; washing

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2024
• Tom: Vol. 60, iss. 2
• Strony: art. no. 187186
• Opis fizyczny: Bibliogr. 39 poz., rys., tab., wykr.

Twórcy

autor

Durgut Emrah

• Çanakkale Onsekiz Mart University, Can Vocational School, Çanakkale, Türkiye
• Istanbul University-Cerrahpasa, Department of Mining Engineering, Faculty of Engineering, Büyükçekmece, İstanbul, Türkiye

• https://orcid.org/0000-0002-4637-7087

autor

Çınar Mustafa

• Çanakkale Onsekiz Mart University, Department of Mining Engineering, Faculty of Engineering, Çanakkale, Türkiye

autor

Boylu Feridun

• Istanbul Technical University, Department of Mineral Processing Engineering, Maslak, Türkiye

autor

Ozdemir Orhan

• Istanbul Technical University, Department of Mineral Processing Engineering, Maslak, Türkiye

• https://orcid.org/0000-0002-4408-546X

Bibliografia

• ABDEL-KHALEK, N.A., SELIM K.A., YASSIN, K.E., HAMDY A., HEIKAL, M.A., 2017. Upgrading of low grade Egyptian kaolin ore using magnetic separation. Journal of Basic and Environmental Sciences. 4, 247-252.
• AKSOY, Y.Y., KAYA, A., 2016. The zeta potential of a mixed mineral clay in the presence of cations. Journal of Engineering and Earth Science. 1, 14-21.
• ASMATULU, R., 2002. Removal of the discoloring contaminants of an East Georgia kaolin clay and its dewatering. Turkish Journal of Engineering and Environmental Sciences. 26, 447-453.
• BORDEEPONG, S., BHONGSUWAN, D., PUNGRASSAMI, T., BHONGSUWAN, T., 2012. Mineralogy, chemical composition and ceramic properties of clay deposits in southern Thailand. Kasetsart Journal - Natural Science. 46, 485-500.
• BOYLU, F., HOJIYEV, R., ERSEVER, G., ULCAY, Y., ÇELIK, M.S., 2012. Production of ultrapure bentonite clays through centrifugation techniques. Separation Science and Technology. 47, 842-849.
• CALVINO, M.M., CAVALLARO, G., LISUZZO L., MILIOTO S., LAZZARA, G., 2022. Separation of halloysite/kaolinite mixtures in water controlled by sucrose addition: The influence of the attractive forces on the sedimentation behavior. Colloids and Surfaces A: Physicochemical and Engineering Aspects. 641, 12853
• CIEŚLA, A., 2003. Practical aspects of high gradient magnetic separation using superconducting magnets. Physicochemical Problems of Mineral Processing. 37, 169-181.
• ÇINAR, M., DURGUT, E., 2019. Mineral beneficiation of nepheline syenite with combination of dry magnetic separation and flotation methods. Physicochemical Problems of Mineral Processing, 55, 1227-1238.
• DURGUT, E., CINAR, M., TERZI, M., UNVER, I.K., YILDIRIM, Y., BOYLU, F., OZDEMIR, O., 2022a. Effect of blunging/dispersion parameters on separation of halloysite nanotubes from gangue minerals. Minerals. 12, 1-17.
• DURGUT, E., CINAR, M., TERZI, M., UNVER, I.K., YILDIRIM, Y., OZDEMIR, O., 2022b. Evaluation of different dispersants on the dispersion/sedimentation behavior of halloysite, kaolinite, and quartz suspensions in the enrichment of halloysite ore by mechanical dispersion. Minerals. 12, 1-22.
• ECE, O.I., SCHROEDER, P.A., SMILLEY, M.J., WAMPLER, J.M., 2008. Acid-sulphate hydrothermal alteration of andesitic tuffs and genesis of halloysite and alunite deposits in the Biga Peninsula, Turkey. Clay Minerals. 43, 281-315.
• GEHAUF, R., 2004. A practical guide on selecting and optimizing rare earth magnetic separators. In Proceedings of the SME Annual Meeting, Denver, CO, USA.
• IBRAHIM, S.S., MOHAMED, H.A., BOULOS, T.R., 2002. Dry magnetic separation of nepheline syenite ores. Physicochemical Problems of Mineral Processing. 36, 173-183.
• JENKINS, R., SNYDER, R.L., 1998. Introduction to X-Ray Powder Diffractometry. Wiley-Interscience, ISBN: 978-1-118-52099-4.
• JOO, Y., JEON, Y., LEE, S.U., SIM, J.H., RYU, J., LEE, S., LEE, H., SOHN, D., 2012. Aggregation and stabilization of carboxylic acid functionalized halloysite nanotubes (HNT–COOH). The Journal of Physical Chemistry C. 116, 18230-18235.
• JOUSSEIN, E., 2016. Geology and mineralogy of nanosized tubular halloysite. Nanosized tubular clay minerals halloysite and imogolite, In: Yuan P., Thill A., Bergaya F. (ed.), Chapter 2, Elsevier, Amsterdam, ISBN: 978-0-08-100293-3, 12-49.
• KEELING, J.L., 2015. The mineralogy, geology and occurrences of halloysite, natural mineral nanotubes: Properties and applications. In: Pasbakhsh P., Churchman G.J. (ed.), Chapter 5, Apple Academic Press, New York, eBook ISBN: 9780429172359, 95-117.
• KOBAYASHI, M., JUILLERAT, F., GALLETTO, P., BOWEN, P., BORKOVEC, M., 2005. Aggregation and charging of colloidal silica particles: Effect of particle size. Langmuir. 21, 5761–5769.
• LI, L., WANG, L., LIU, Q., 2022. Effects of salinity and pH on clay colloid aggregation in ion-adsorption-type rare earth ore suspensions by light scattering analysis. Minerals. 13, 38.
• MARABINI, A.M., FALBO, A., PASSARIELLO, B., ESPOSITO, M.A., BARBARO, M. Chemical leaching of iron industrial minerals, XVIII International Mineral Processing Congress, 23-28 May 1993 Sidney, Australia, ISBN: 0949106852, 9780949106858, 23-28
• MURRAY, H.H., 2006. Applied clay mineralogy. Occurrences, processing and application of kaolins, bentonites, palygorskite-sepiolite, and common clays. Elsevier Science. USA, eBook ISBN: 9780080467870.
• OATS, W.J., OZDEMIR, O., NGUYEN, A.V., 2010. Effect of mechanical and chemical clay removals by hydrocyclone and dispersants on coal flotation. Minerals Engineering. 23, 413-419.
• OHARA, T., KUMAKURA, H., WADA, H., 2001. Magnetic separation using superconducting magnets. Physica C: Superconductivity. 357, 1272-1280.
• OZDEMIR, O., GUPTA, V., MILLER, J.D., ÇINAR, M., ÇELIK, M.S., 2011. Production of trona concentrates using highintensity dry magnetic separation followed by flotation. Mining, Metallurgy & Exploration. 28, 55-61.
• PARK, K.C., CHOI, S.C., PARK, Y.K., 1974. A Study on iron compounds accompanied in Korean kaolin minerals. Journal of the Korean Ceramic Society. 11, 22-30.
• RAMAKGALA, C, DANHA, G., 2019. Mineralogical characterisation of Matsitama banded iron ore. IOP Conf. Ser.: Materials Science Engineering. 641 012029.
• ROY, S., DAS, A., VENKATESH, A.S., 2008. A comparative mineralogical and geochemical characterisation of iron ores from two Indian Precambrian deposits and Krivoy rog deposit, Ukraine: implications for the upgrading of lean grade ore. Applied Earth Science IMM Transactions section B. 117, 125-147.
• RUAN, Y., HE, D., CHI, R., 2019. Review on beneficiation techniques and reagents used for phosphate ores. Minerals. 9, 253.
• SAKIEWICZ, P., LUTYNSKI, M., SOLTYS, J., PYTLINSKI, A., 2016. Purification of halloysite by magnetic separation. Physicochemical Problems of Mineral Processing. 52, 991-1001.
• SINGH, B.P., MENCAVEZ, R., TAKAI, C., FUJI, M., TAKAHASHI, M., 2005. Stability of dispersions of colloidal alumina particles in aqueous suspensions. Journal of Colloid and Interface Science. 291, 181–186.
• SUMNER, M.E., 1963. Effect of iron oxides on positive and negative charges in clays and soils. Clay Minerals Bulletin. 5, 218-226.
• SVOBODA, J., 1987. Magnetic Methods for the Treatment of Minerals. Amsterdam, Elsevier Science Publishing Company, Inc.
• TAKAHASHI, H., 1957. Effect of dry grinding on kaolin minerals. Clays and Clay Minerals. 6, 279-291.
• TAKAHASHI, H., 1959. Wet grinding on kaolin minerals. Bulletin of the Chemical Society of Japan. 32, 381-387.
• TRIPATHY, S.K., BANERJEE, P.K., and SURESH, N., 2015. Effect of desliming on the magnetic separation of low-grade ferruginous manganese ore. International Journal of Minerals, Metallurgy and Materials. 22, 661-673.
• WILSON, I.R., 2004. Kaolin and halloysite deposits of China. Clay Minerals. 39, 1-15.
• YAVUZ, C.T., PRAKASH, A.B., MAYO, J.T., COLVIN, V.L., 2009. Magnetic separations: From steel plants to biotechnology. Chemical Engineering Science. 64, 2510-2521.
• YOUNG, R.A., 1995. The Rietveld Method. Oxford Science Publications, ISBN: 9780198559122.
• ZONG, Q.X., FU, L.Z., BO, L., 2018. Variables and applications on dry magnetic separator. In Proceedings of the E3S Web of Conferences, 53. eISSN: 2267-1242.