Structural Investigations of Dump Ferromanganese Silicon Slag and their Recycling Possibilities to Raise Throughout Recovery of Manganese and Silicon  Full text 

V.S. Kutsin¹, M.I. Gasik², V.A. Gladkikh²

¹JSC “Nikopol Ferroalloy Plant”
310 Electrometallurgov St., Nikopol, 53200, Ukraine  
² National Metallurgical Academy of Ukraine 
4 Gagarin Ave., Dnipropetrovsk, 49600, Ukraine

UDC 669.168:531.3

Metall. Min. Ind.,  2011, Vol. 3, No. 3, pp. 89-100

Abstract

The microstructure of dump ferromanganese silicon slag is investigated by EMPA method. The slag is silica - enriched. The microstrusture is represented by bustamite (Mn, Ca)3 [Si3O9] and probably johannsenite Ca, Mn [Si2O6] as well as α-MnS alabandine precipitations and alloy prills; intergranular compounds contain Al2O3 SiO2, Na2O и K 2O. The results of laboratory and experimental-industrial tests of slag-coal pellet production and standard ferrosilicomanganese smelting are analyzed.

Keywords: FERROMANGANESE SILICON, DUMP SLAG, MICROSTRUCTURE, RESEARCH METHODS, QUARTZ, BUSTAMITE, JOHANNSENITE, ISOMORPHISM, SLAG-COAL PELLETS, ARC-FURNACE MELTING