SU621778A1 - Charge for obtaining vanadium-base ferroalloy - Google Patents

Description

coalesce easily, therefore} vanadi losses with these drops do not occur.

Example 1. At the Chel Electrometallurgical Combine, with a furnace of 1.1 MB A, ferrosilicapadium is smelted from a charge consisting of,%: 40-50 vanadium slag from steelmaking; 0.8-10 vapadat of alkali metals; 1-5 fluvolite; 10-20 reducing agent (coke and ferrosilicon FS 65) and lime - the rest.

Sodium vanadate is used as vanadate. A reducing agent consisting of coke and ferrosilicon is taken in such an amount that the final alloy contains 10-15% silicon, i.e. corresponds to

technical conditions of ferrostyleIkbvapadium KVdK-1 or KVdK-2.

Vanadium schlak steelmaking has the following composition, weight. %: 19.4 UgOz; 42.7 FeO; 7.4 SiOg; 1.2 CaO; 4.3 MgO; 1.0 HOD; 3.2 CrHy; 5.1 TiO; 6.8 Mn 0; 8.5 metallic inclusions, the rest impurities.

For comparison, smelting is carried out on a charge consisting of vanadium mill steel, iron, lime, a reducing agent, a fluorite aggregate, but without the inclusion of sodium vanadates in the composition.

The composition of the proposed and well-known

presented in table. one.

Table 1

At the end of the melting, the metal and slagmanganese are calculated and the extraction is calculated, separated, vozveshivayut, determine the content in the metal.

Vanadium, silicon, titanium, and chromium melting. The results of melting at different versions. Thus, using solids for smelting ferroalloy (ferrosilicate) can improve vanadium extraction by 3.1–3.8%.

The alloy obtained using the described charge fully complies with the existing standards for ferrosiliconadium of the grades KVdK-1 and KVdK-2.

After the introduction in Chel of the Bino Electrometallurgical Plant in 1976, the charge yielded a saving of about 200 thousand rubles. R year due to the increase in extraction of the composition of the charge by van20ants is given in table. 2

table 2

di and use of vanadium containing waste.

Claims (1)

Invention Formula The mixture for producing vanadium-based ferroalloy, including vanadium slag of steelmaking, lime, fluorite board and reducing agent, characterized in that, in order to improve the extraction of vanadium into ferroalloy, the mixture additionally contains alkali metal vanadates in the following ratio of components, wt. %: 56 Vanadium steelmaking slagLand Rest production 40-50 sources of information Alkali metal vanadates 0,8-10printye in attentive examination Fluoric SHNat 1-51. USSR author's certificate Reducing agent 10-205 No. 398673, cl. From 22C 31/00, 1971. 621778