Method for generating nitrogenous ferrovanadium alloy through utilizing ferrovanadium electric-arc furnace

Abstract

The invention discloses a method for generating nitrogenous ferrovanadium alloy through utilizing a ferrovanadium electric-arc furnace, and belongs to the technical field of non-ferrous metal metallurgy. The method is characterized in that a single or more nitrogen/argon blowing devices are installed on the furnace bottom or the furnace wall of the ferrovanadium electric-arc furnace with the general nominal capacity of 300-5000kg and can freely blow nitrogen/argon into a ferrovanadium electric-arc furnace hearth, selected raw materials are used, and finally, the nitrogenous ferrovanadium alloy with 45-60% of V, less than 2% of Si and 2-8% of N can be obtained and can be used as a steel additive. Compared with common ferrovanadium, according to the nitrogenous ferrovanadium alloy, the alloy usage can be reduced above 10%, the vanadium yield is increased by 1%, the melting period is shortened by above 30 minutes, the melting power consumption is reduced by 10-15%, and the comprehensive melting cost is lowered by above 2%.

Description

technical field [0001] The invention relates to a method for producing nitrogen-containing ferro-vanadium alloy by using an ordinary ferro-vanadium electric arc furnace, belongs to the technical field of non-ferrous metal smelting, and is a ferroalloy production method. technical background [0002] Vanadium is an important alloying element in the steel industry. More than 85% of vanadium in the world is used in steel production. The interaction of vanadium with nitrogen and other elements in steel can improve many properties of steel. [0003] The vanadium-containing raw materials used in the iron and steel industry mainly include ferrovanadium, vanadium nitride, and ferrovanadium nitride. [0004] Ferro-vanadium alloy, whose main components are vanadium and iron, is the most productive vanadium product. Ferrovanadium production generally uses ferrovanadium electric arc furnaces, using vanadium oxides as raw materials, and producing according to methods such as silicotherm...

AI Technical Summary

Problems solved by technology

The existing production technology threshold of vanadium nitride or ferrovanadium nitride is relatively high, and a large number of solid-state nitriding methods are used, the

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