| 摘要 |
FIELD: metallurgy.SUBSTANCE: invention refers to metallurgy and can be used for aluminothermic production of ferromolybdenum. The charge containing the following, wt %, is proposed: molybdenum concentrate 38.5-39.8, iron powder 16.3-17.0, aluminium 14.3-14.8, lime 26.1-26.4, and ground high-aluminous clinker 3.1-3.4. Charge of the proposed composition is prepared, loaded and fused in a melting unit with periclase lining. First, the charge in the amount of 3-5% is put into a melting pot and ignited with an ignition mixture containing magnesium chips and sodium nitrate, and then, the rest charge is loaded into the melting unit onto a furnace top as fusion is being performed. After the melting is completed, slag is exposed in the melting pot till complete deposition of drips of the alloy till final crystallisation of melting products; after that, the obtained alloy is separated from slag, crushed and packed into a finished product.EFFECT: invention allows obtaining ferromolybdenum of increased quality, and namely of "???"60 grade, using ground high-aluminous clinker as a fluxing additive, which reduces pyrophoric effect.2 ex, 1 tbl |
