Production of Manganese Alloys from Rich High-Basicity Ore

摘要

Most manganese ores exported by world producers are characterized by low basicity (<0.5) and may accordingly be used in single-stage smelting of ferrosil-icomanganese by the slag method. We know that many deposits have large reserves of highly basic manganese ore [1, 2]. The chemical composition of such ore is outlined in Table 1. The ore basicity is in the range 0.76-2.93, which is 1.5-6.0 times the permissible level for ferrosilicoman-ganese production by the slag method. Only high-carbon ferromanganese may be produced from such ore. The smelting of carbon ferromanganese by the flux method on the basis of low-basicity (acidic) ore has been adequately covered in the literature and introduced in practice [3-5].