Before official construction of the High-carbon Ferrochrome Project I and the overall technology transfer, Mintal Group Chrome Industry Science & Technology Co.,Ltd. (hereinafter referred to as Mintal) and Outotec Oyj investigated again about the project’s environmental impacts, based on which changed some engineering design. Thus, Mintal released this report as a complement to previous one.
Smelting furnace capacity: 2×75MVA.
Furnace gas dust is extracted by Venturi scrubber and lye is used in desulfurization. Desulfurization efficiency is 90%.
Smoke stack height and water consumption were changed.
Compressed-air station scale was enlarged.
During commissioning, although pollutants emission data differed from design value, they met related emission standard.
Environmental Impact Analysis:
Mintal’s High-carbon Ferrochrome Project I introduced clean metallurgical technique, which achieved effective treatment of off-gas, waste water and noise. Therefore, this project had less impact on surrounding environment.