Microstructural and elemental analysis of refractory compounds for the rational use of basalt melt products

The present study investigates the refractory metallic deposit formed on the cupola furnace hearth during the melting of basalt from the "Aidarkul" deposit (Republic of Uzbekistan). The elemental composition of the deposit was determined by scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM-EDS): Fe – 81.9 wt.%, C – 9.1 wt.%, Si – 7.8 wt.%, P – 0.7 wt.%, V and Ti – 0.2 wt.% each. A lamellar microstructure characteristic of high-silicon, high-carbon cast iron was identified, formed as a result of carbothermic reduction of iron-bearing basalt minerals. The feasibility of utilizing the deposit as a secondary raw material in the metallurgical and mechanical engineering industries is substantiated.

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