Ferrotitanium with low silicon and its preparation method

Abstract

A low-Si ferrotitanium contains Ti (35-75 wt.%), Al (1-12 wt.%), Si (0-1.5 wt.%), C (0-0.05 wt.%), P (0-0.02 wt.%), S (0-0.02 wt.%) and Fe (rest), and is prepared from titanium ore concentrate and waste titanium material through smelting, or from waste steel and pure titanium through resmelting. Its advantage is high purity.

Description

Technical field [0001] The invention belongs to the technical field of ferroalloy production, and relates to a ferroalloy and a preparation method thereof, in particular to a smelting method in which titanium concentrate and titanium waste are used as raw materials, a combination of thermite method and remelting method is adopted, or scrap steel and pure titanium are used , low-silicon ferro-titanium obtained by remelting in an open-type intermediate frequency furnace and a preparation method thereof, the low-silicon ferro-titanium is suitable for smelting deep-drawing thin steel plates, especially suitable for smelting IF steel for automobiles. Background technique [0002] With the development of various steelmaking and refining technologies, people have been able to control the harmful elements in steel relatively easily, thereby improving the performance of steel grades to meet the needs of different manufacturing industries. Therefore, the iron and steel industry has al...

AI Technical Summary

Problems solved by technology

However, the use of this kind of low-silicon ferro-titanium does not require some other elements, so when smelting steel, the deoxidation of molten steel and the control of the size of the primary grain of the steel in the austenitic state are beneficial to the utilization of the valuable element titanium. The effect is not very obvious, and the steel smelted with it is not very ideal in terms of anti-aging, plasticity, atmospheric corrosion resistance and good machining performance