MG-RICH ULTRAMAFICS OF THE NAGA HILLS OPHIOLITE, NAGALAND, INDIA: A POTENTIAL SUBSTITUTE AS BASIC FLUX IN METALLURGICAL INDUSTRIES

Watitemsu Imchen (), Pukrozo Keyho, Meribemo Yanthan, Imomeren Ao and John K. Angami
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Watitemsu Imchen: Geological Survey of India, Dimapur, Nagaland, NE India – 797 112
Pukrozo Keyho: Geological Survey of India, Dimapur, Nagaland, NE India – 797 112
Meribemo Yanthan: Geological Survey of India, Shillong, Meghalaya, NE India – 793 006
Imomeren Ao: Geological Survey of India, Dimapur, Nagaland, NE India – 797 112
John K. Angami: Geological Survey of India, Dimapur, Nagaland, NE India – 797 112

Malaysian Journal of Geosciences (MJG), 2022, vol. 6, issue 1, 45-52

Abstract: Flux materials are indispensable in iron ore refining process to effectively segregate gangue minerals and to improve other physicochemical properties. Lately, the demand for metallurgical grade flux materials such as limestone and dolomite for iron and steel manufacturing industries in India has surged manifold and depends largely on imports due to its limited resources. MgO-bearing flux has emerged to be a potential alternative to conventional fluxes (limestone and dolomite); though huge resources of Mg-rich ultramafic rocks are available in the Indian subcontinent, their economic utility as metallurgical flux is not fully explored. To evaluate the suitability of flux material in iron and steel industries, Mg-rich ultramafics of the Naga Hills Ophiolite (NHO) have been studied. Major oxides and petro-mineralogical studies have been undertaken to understand the chemical and mineralogical attributes of NHO Mg-rich ultramafics. Results indicate appreciable MgO content (up to 46.7%) barring pyroxenite, with low Al2O3 (

Keywords: Mg-rich Ultramafics; Flux; Metallurgical Industries; NHO (search for similar items in EconPapers)
Date: 2022
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DOI: 10.26480/mjg.01.2022.45.52

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