How do you make ferro titanium?
Adding various metal and non-metal elements to iron and steel can create various properties. Titanium has a low specific gravity, only 4.5 g/ml, and a high melting point of 1690°C. It is also easy to oxidize and is oxidized on the liquid steel surface. A lot of it is burned through oxidation, the loss is too great, and the content is difficult to control. Moreover, the preparation process of a single metal is complicated, the production cost is high, the price is expensive, etc., so it is not suitable to directly add steel in the state of pure metal and non-metallic single substance during steelmaking. liquid. A method for preparing photocatalyst materials using ilmenite concentrate belongs to the technical field of new photocatalyst materials. The process steps are crushing the ilmenite concentrate, batching, ball milling, drying, shaping, roasting, cooling, and grinding into fine powder to test its photocatalytic activity.
For this reason, metallurgists have researched and produced alloys of these elements and iron, which are called "ferroalloys". The melting point of the alloy of titanium and iron is close to that of steel, the specific gravity is similar to that of steel, and it is not easy to oxidize. Its production process is better than that of the steel. Pure metals and non-metals are simple, the production cost is much lower than pure single metals and non-metals, and the price is low. They are especially suitable for use in steelmaking and the production of various high-tech materials. Therefore, ferroalloys have become important materials in steelmaking and new materials industries. Currently, there are dozens of types of ferroalloys including binary and multicomponent ferroalloys, among which ferrotitanium is one of the most widely used binary ferroalloys.
It can be seen that the 30 in FeTi30A means that the titanium content center value of this brand of ferrotitanium is 30%, and the allowed fluctuation range is 25~35%, that is, the titanium content from 25 to 35% is considered to meet the titanium content standard of FeTi30A ferrotitanium. However, in actual delivery, users will require that the batch be grouped according to a titanium content of 2%, that is, the difference between the highest and lowest titanium content in the same batch number cannot exceed 4%. The A in FeTi30A indicates a Grade A product, which is different from a Grade B product and has stricter restrictions on the content of impurity elements.
Ferro-titanium production currently uses the scrap titanium remelting method and the titanium concentrate metal thermal reduction method.
The scrap titanium remelting method is to mix scrap titanium and scrap steel that meet the chemical composition in an intermediate frequency furnace, generally producing high titanium iron (FeTi70).
The metal thermal reduction method of ilmenite concentrate, also known as the out-of-furnace method, uses metal aluminum powder to react with ilmenite concentrate (xTiO2.yFe3O4) to reduce and produce titanium ferroalloy. This method is the standard production process of FeTi30 ferrotitanium.
From these two processes, the rutile thermite method is derived to produce high ferrotitanium (FeTi70), the rutile thermite method is used to produce medium ferrotitanium (FeTi40), etc. The ferrotitanium production process can be described as bright among stars.
