Conditions for The Preparation of Stable Ferrosilicon Dust Briquettes

The article presents the results of the selection of optimal conditions for the preparation of mixture and the briquetting conditions for obtaining stable ferrosilicon dust briquettes. The dust of 0-3 mm grain size fractions which are residues (by-products) of ferrosilicon melting process was analyzed. Briquetting of dust allows obtainingvery solid agglomerates. The method of material preparation was to add a particular quantity of binder to dust and mixing them carefully. An adhesive of the water glass withor without addition an aqueous solution of starch were used. The addition of water glass to ferrosilicon in the amount of about 6% allows manufacturing tough briquettes, however, the application of adhesives in the form of a mixture of water glass (about 2.0%) and starch (about 3.0%) found to obtain higher strength parameters. Finding the binder allowed to develop of industrial production technology of high-quality ferrosilicon briquettes, which are suitable for use in domestic and foreign steel foundries. Briquettes are not to crumble and dissolve easy when adding for melting to recovery of silicon.