Thermodynamic analysis of chemical transformation in the solid-phase reduction of titanium-magnetite concentrates

Асанов, А. В.; Рощин, В. Е.; Senin, A.V.; Рощин, А. В.

doi:10.3103/s0967091210040030

Cited by 4 publications

(2 citation statements)

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“…The temperature 1150°C was chosen on the basis of preliminary reduction experiments in the muffle furnace and according to the data of the thermodynamic analysis [11][12]. Ore melts at temperatures above 1150°C and the tube can be damaged.…”

Section: Materials and Experimentalmentioning

confidence: 99%

Solid-Phase Reduction of Iron from Suroyam Titanomagnetite Ore during Metallization in Rotary Kiln

Smirnov

Салихов

Roshchin

2019

MSF

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In this work the solid-phase reduction of iron from the Suroyam titanomagnetite ore was studied during metallization in a rotary kiln. The technique of preparation of the ore and reducing agent for metallization and the process of continuous processing of materials in a rotary kiln were described in detail. For metallization the temperature was chosen 1150°C, due to low melting point of apatite from one of the components. The results of the electron microscope analysis of the initial ore and samples subjected to metallization for 1-hour reduction time were presented. The reduction of iron occurred despite absence of pores and contact with a reducing agent in the grains of titanomagnetite. Iron in the grains of titanomagnetite surrounded by apatite was reduced to wustite; whereas, iron surrounded by clinopyroxene was reduced to metallic iron. This indicated the effect of composition of the gangue materials on the reduction process.

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