Abstract
The article presents the results of laboratory studies and production tests aimed at solving the problem of recycling aspiration dust generated during smelting of ferrosilicon manganese in ore-reducing electric arc furnaces of JSC «Uzmetkombinat». In the course of the work, a special technique for the manufacture and study of briquettes in laboratory conditions was developed, which made it possible to significantly reduce the labor intensity of the studies and accelerate the achievement of results. The studies made it possible to develop and optimize the composition of briquettes and the technology of their manufacture, determine the criteria for the quality of briquettes and methods for their control. Testing of the obtained briquettes in production conditions showed that they can be used as a component of the charge in the smelting of ferrosilicon manganese instead of traditional lump manganese ore. The obtained results make it possible to almost completely utilize aspiration dust from ferroalloy smelting (return the manganese contained in the dust to production), reducing the amount of man-made waste subject to disposal by 30-35%, and reducing the need for manganese-containing raw materials by 10-12%, with a corresponding reduction in the cost of the final product.
Keywords:
ferrosilicon manganese, ore recovery furnace, pulverized waste, briquetting, recycling