Process for preparing ferrotitanium alloy

Abstract

The invention discloses a process for preparing a ferrotitanium alloy. The process comprises the following steps: (1) smelting the titanium concentrate into the titanium slag in an electric furnace, adding the alkali carbonate into the electric furnace, and introducing the oxygen and stirring; (2) electrolyzing by taking the graphite as an anode and the molten iron at bottom part of the electric furnace as a cathode, and putting the metallic titanium to melted iron to form a liquid phase ferrotitanium alloy; (3) discharging the molten iron and the liquid phase ferrotitanium alloy under an inert gas, and cooling to obtain the crude ferrotitanium alloy; and (4) deoxidizing and refining: electrolyzing by taking the alkali chloride and the titaniferous villiaumite as the electrolytes, taking the crude ferrotitanium alloy as the cathode and taking the carbon steel as the anode at the temperature of 600-800 DEG C, controlling the cathode current density to 1.0-1.5 A / cm<2. while electrolyzing, taking the cathode product out under normal temperature after finishing electrolyzing, and washing by deionized water to obtain the ferrotitanium alloy. The process for preparing the ferro titanium alloy provided by the invention is low in production cost, short in process flow, complete in de-oxygenation, low in process energy consumption and high in current efficiency and the application of the ferrotitanium alloy in the steelmaking can be improved.

Description

technical field [0001] The invention relates to the technical field of ferroalloy production, in particular to a preparation process of ferro-titanium alloy. Background technique [0002] Ferro-titanium alloys are widely used as deoxidizers, degassers and alloying element additives in the iron and steel industry. At present, the aluminothermic method and remelting method are widely used to produce this kind of alloy. The traditional preparation process of ferro-titanium alloy, one is to reduce titanium oxide and iron oxide with reducing agent silicon and aluminum. The oxygen content in ferro-titanium alloy prepared by this method is high, the content of reducing agent in the product is high, and the reducing agent cost High, indirectly increased the production cost; the second is inspired by the electro-deoxidation process, using graphite as the anode and titanium and iron oxides as the cathode in the molten salt system to prepare ferro-titanium alloy, this method is not co...

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Problems solved by technology

The traditional preparation process of ferro-titanium alloy, one is to reduce titanium oxide and iron oxide with reducing agent silicon and aluminum. The oxygen content in ferro-titanium alloy prepared by this method is high, the content of reducing agent in the product is high, and the reducing agent cost High, which indirectly increases the production cost; the second is inspired by the electro-deoxidation process, using graphite as the anode and titanium and iron oxides as the cathode to prepare ferro-titanium alloy in the molten salt system for deoxidation. Low, so that the prepared ferro-titanium alloy will cause secondary pollution to molten steel in the steelmaking process and affect the quality of molten steel