Abstract
Development of world industrial production is aimed to optimize the use of mineral resources, the utilization of secondary material and energy resources, and environmental protection. The production of ferronickel from oxidized nickel ores is based on the use of raw materials, where the nickel content practically does not exceed 2.5%, therefore the process is characterized by a large slag volume and slag-metal ratios 6-10 times, which is the highest in smelting of ferroalloys. The samples of electric furnace and refining slags from ferronickel production using oxidized nickel ore from Guatemala were studied by X-ray spectral microanalysis (X-raySMA) method at the Selmi REM-106I facility. It was determined that majority of nickel is concentrated prills of various shapes contains iron and sulfur, where the Ni content in some cases exceeds 70%. The processing routes for recovery of nickel from furnace slags by wet technology and refining slags by dry technology with the use of a modernized magnetic separator is developed and proposed for introduction, which allows for recovery of 31.6% and 94.65% nickel from the slag respectively
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