CS218741B1 - Method of production of the alloy titanium-titanium-silicium-aluminum - Google Patents

Abstract

The invention relates to a method for producing a ferro-titanium-silicon-aluminium alloy by reducing titanium raw materials with aluminium in the presence of silicon and a suitable amount of lime in the batch. A method for producing a ferro-titanium-silicon-aluminium alloy with a content of min. 20% Ti, min. 15% Si, Al as required, with a low carbon content by reducing titanium raw materials with aluminium. The essence of the method lies in the fact that aluminium is reduced in the presence of silicon and lime, when silicon is present in the alloy with one or more elements and lime is present in an amount which, in terms of <ia CαO, corresponds to at least a quarter of the A1203 content * in the final slag.

Description

The invention relates to a process an alloy of type ¹ and ferro-silicon-titanium-aluminum material by reducing titanium and aluminum, and silicon in the presence of a suitable amount of lime yo mixture.

The literature describes the production of an FeTiSi alloy with a weight content of 29-30% TI, 17-20% Si, 1.8-2% C, the remainder of the Fe by carbothermal reduction of a mixture of ilmenite and quartzite. With the addition of bauxite, an alloy of FeTiSiAl of mass composition was produced: 31.5% Ti, 12-14% Al, 8-10% Si, about 1% Mn and about 2% C, the remainder Fe using titanium 70-75% at electrical consumption energy 10-14 kWh / kg.

Results of experimental melting of slag reduction from ferrotitanium coke production in single-phase noise furnaces were also published. With the addition of fireclay waste to the batch, a FeSiTiAl alloy with a relatively low titanium content and a high carbon content was produced.

According to the invention, a ferro-titanium-silicium-aluminum alloy with a min. 20% Ti; min. 15% Si, Al as desired, low carbon content by reducing aluminum from titanium raw materials in the presence of sufficient silicon and lime in the batch. Silicon in the batch favorably affects the activity of the elements to achieve high titanium utilization, passes into the alloy produced without the need to reduce it with aluminum. The increased amount of lime supports the production process and allows a wide utilization of the resulting aluminum-calcium slag.

In this way a high utilization of titanium from raw materials is achieved, which exceeds 90% at a relatively low consumption of aluminum, a low

Claims (1)

OBJECT A method for producing a ferro-titanium-silicon-aluminum alloy with a minimum content of 20% titanium, a minimum of 15% silicon, an aluminum as required, a low carbon reduction with titanium aluminum, characterized in that aluminum is reduced in the presence of 218741! low electricity consumption, with low demands on the quality of aluminum and titanium raw material j, and a low carbon alloy is produced. The tall manufacturing process is Tahko's controllable, = highly productive and allows the composition of the produced alloy to vary within a relatively wide range. The achieved high utilization of titanium makes it possible to use as a titanium raw material also debris from fertility production. Example In an electric arc furnace, a charge containing as the titanium raw material ilmenite concentrate was processed, the calculated amount of aluminum, silicon and lime. Silicon can be embedded in the form of FeSi, FeSiAl, SiAl, and the like. 'After the charge has melted, the metal tap has been transferred! debris. Charge composition: 500 kg ilmenite 120 kg aluminum - waste 350 kg FeSiAl [200 kg lime 570 kg of metal produced by weight | Composition: f% TI% Si% AI% C,! 30.88 30.94 2.78 0.09 j The wreck contained:! % SiO2% TiO2 4.44 2.45 Titanium utilization was 94% at 1.5 kWh / kg power consumption of the alloy. DISCLOSURE OF THE INVENTION Silicon and lime, when silicon is present in the alloy with one or more elements, and lime is present in an amount that, on a CaO basis, corresponds to at least a quarter of the A12O3 content of the final slag.