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Método carbotérmico para fabricación de ferroaleaciones complejas de alto rendimiento con titanio y zirconio a partir de residuos reciclables y materias primas de calidad inferior

Resumen

Tipo:
Oferta Tecnológica
Referencia:
TORU20140604001
Publicado:
18/06/2015
Caducidad:
22/12/2015
Resumen:
Una empresa rusa especializada en I+D en el sector metalúrgico ha desarrollado una tecnología para fundir ferroaleaciones complejas de alto rendimiento con titanio y zirconio. Las ferroaleaciones se producen a partir de una carga que contiene aproximadamente un 60% de residuos reciclables. Posteriormente se utilizan para fabricar acero y mejorar su calidad, características mecánicas y vida útil. El método carbotérmico reduce el contenido de aluminio, cobre y estaño en la ferroaleación, aumentando así su rendimiento. Se buscan socios interesados en establecer acuerdos de cooperación técnica y científica.

Details

Tittle:
Production of high-efficiency complex ferroalloys with titanium and zirconium from utilizable wastes and off-grade raw materials with the carbothermic method
Summary:
A Russian company from Chelyabinsk, specializing in R&D for metallurgy, developed a technology for smelting high-performance complex ferroalloys with titanium and zirconium. The ferroalloys are produced from a charge containing ~60% of recyclable wastes; they are further used in the steel manufacture and enhance the quality, mechanical characteristics and the service life of steels produced on their basis. The company looks for partners for technical and scientific cooperation.
Description:
At most ferroalloy productions, the accompanying wastes are the screenings of quartzite and coke-coal mixture. Usually, these screenings are not reutilized at the plant. Another topical problem is the utilization of the dry stillage (grain) - the main waste in the production of ethyl alcohol. To solve these problems, the Russian company has developed a technology for production and application of complex ferroalloys on the basis of titanium and zirconium via the carbothermic smelting. This technology provides for simultaneous disposal of substandard raw materials of the ferroalloy industry, as well as the alcohol production wastes.
The ferroalloy production technology is implemented in two stages. The first stage involves the utilization of substandard raw materials and wastes. The screenings of quartzite and coking coal are mixed together, then they are briquetted, using the ethyl alcohol stillage as a binder. At the second stage, the carbothermic smelting of the ferroalloy is realized from the obtained briquettes, mixed with the additional components of the furnace charge containing titanium and zirconium. That is, the ferroalloys are produced from the charge containing ~60% of recyclable wastes, thus reducing the harmful effects of the industry over the environment. The resulting complex ferroalloy with titanium and zirconium is to be used for steel and cast iron treatment.
The main innovative feature of the technology is the method of carbothermic smelting of ferroalloys. It reduces the content of aluminum, copper and tin in the ferroalloy, which increases the efficiency of its use. In this alloy, titanium and zirconium are in the form of the compounds which are better assimilated by the ferricarbonic iron melt, in comparison to the conventionally used ferroalloys. Titanium and zirconium bind nitrogen and sulfur into strong compounds, neutralizing their harmful effect on the steel and cast iron. The refractory carbides, nitrides and sulfides of titanium and zirconium, generated in the iron and steel, serve as additional nucleation centers during the crystallization. This results in a more dense grain structure of the metal.
Advantages and Innovations:
The main innovative feature of the technology is the carbothermic ferroalloy smelting method that allows to:
- utilise the wastes of the ferroalloy industry and the dry grain as raw materials;
- reduce the content of aluminum, copper and tin in the ferroalloy.
The offered technology has also the following advantages:
- it is environmentally friendly;
- low cost (using the recyclable raw materials);
- improves the steel quality;
- improves the mechanical properties of steel;
- increases the resource of steel use.
Stage of Development:
Under development/lab tested
IPs:
Patents granted
CommeR Statunts Regarding IPR Status:
RF Patent, 2010

Partner sought

Type and Role of Partner Sought:
Type: Industry, R&D Institution
Area: Metallurgy. Utilization of metallurgical and alcohol production waste
Tasks to be performed: Joint R&D project for developing a pre-production model, optimization of technical parameters for carbothermic method. A joint application for international RF-EU calls.

Client

Type and Size of Client:
Industry SME <= 10
Already Engaged in Trans-National Cooperation:
No
Languages Spoken:
English

Keywords

Technology Keywords:
02007010 Metales y aleaciones