Method for reinforcing titanium concentrate pellet prereduction

• Main Authors: LIU JUAN, HAN KEXI, XIAO JUN, LI KAIMAO, ZHANG JIDONG, ZHAO QINGE, MIAO HUIJUN
• Format: Patent
• Language: English
• Published: 16.09.2015
• Subjects: CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention belongs to the field of titanium concentrate smelting titanium slag, in particular to a method for reinforcing titanium concentrate pellet prereduction. The method for reinforcing the titanium concentrate pellet prereduction solves the technical problems of low titanium concentrate pellet metallization ratio and high later smelting electricity consumption of the prior prereduction. According to a scheme for solving the technical problems, the method for reinforcing the titanium concentrate pellet prereduction includes steps that a, pellet pressing, to be specific, mixing titanium concentrate, adhesives and water for 30 minutes, and conveying to a roller sheet pellet press machine to press to form the pellet; b, pellet drying, to be specific, drying the pressed pellet for 60 minutes at 200 degrees centigrade; c, pre-oxidation, to be specific, roasting and pre-oxidizing the dry pellet for 10 to 20 minutes at 950 to 1050 degrees centigrade, wherein the pre-oxidation atmosphere is air; d, prereduction, to be specific, roasting and pre-reducing for 25 to 30 minutes at 1250 to 1350 degrees centigrade after uniformly mixing the oxidized and roasted pellet with pulverized coal under nitrogen protection. The method for reinforcing the titanium concentrate pellet prereduction realizes the fine grained titanium concentrate use of Panzhihua, effectively lowers the later smelting electricity consumption and improves the smelting furnace conditions; devices needed for the method are broad in source, and the operation is convenient to perform.