Industrial research tests on utilizing production waste in ferrosilicon smelting
DOI:
https://doi.org/10.15587/1729-4061.2014.29968Keywords:
dust, waste, bricks, ferrosilicon (FeSi) smelting, direct current (DC) ovens, environmental safetyAbstract
Utilization of batch materials with a significant amount of small fraction in ferroalloy smelting worsens the technical and economic indices of the working ovens, exceeds the norm of the pollutant emissions in the atmosphere, and aggravates further processing (or utilizing) of the dust waste.
The paper presents the findings of industrial research tests on ferrosilicon smelting by the method of electro-slag remelting in which the batch contains bricks of dust waste (aspiration dust as well as dust captured by gas treatment equipment).
We have determined that the main constituents of dust waste bricks are very similar to those of batch materials, which proves expediency of utilizing dust waste in ferrosilicon (FeSi) smelting. We have devised a technological scheme and tried utilization of dust bricks in electro-slag remelting for FeSi smelting. The tests have proved that the obtained quality of ferrosilicon FeSi45 meets world standards. The instrumental measuring of dust emissions in the atmosphere enabled us to determine interdependence between the emissions and the technical and economic indices of smelting (the smelting time and the output).
The industrial research tests have proved that using dust bricks in the batch reduces dust emissions by 10 % to 25 % and makes it possible to utilize dust waste.
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Copyright (c) 2014 Олена Леонідівна Проценко, Тимофій Федорович Жуковський, Сергій Лукич Борисенко
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