In this paper, an experimental study of the process of solid-phase selective metallization of pellets and extrusion briquettes (braces) from the oolitic iron ore of the Ayatskoye deposit is carried out. The research included the development of a laboratory technique for the production of initial samples – crushing ore, forming wet braces and pellets, drying and firing them in an oxidizing atmosphere to remove moisture and partially remove sulfur. After that, the samples were subjected to reducing firing in an atmosphere of carbon monoxide and in contact with solid carbon at temperatures of 950 and 1050 degrees Celsius for three hours. As a result, it was found that at a temperature of 1050 ° C, the metal phase content in the samples reaches up to 0.6 atm. %, and the phosphorus content in the metal when using solid-phase processing is up to 3.1 atm. %. Analysis of the mass of the samples after recovery showed that the losses in the samples recovered at 1050°C in the presence of solid carbons exceed the losses when using a CO atmosphere. Reducing the reduction temperature to 950 °C has virtually no effect on the difference in mass loss when using a CO atmosphere and when in contact with solid carbon.

SULEIMЕN B.T.

Candidate of Technical Sciences, Researcher, «Hydrogen Technologies in Metallurgy» SRL, South Ural State University, Chelyabinsk, Russian Federation

Е-mail: bakytsuleimen@mail.ru, https://orcid.org/0000-0001-9306-1045

KOSDAULETOV N.Y.

Candidate of Technical Sciences, Researcher, «Hydrogen Technologies in Metallurgy» SRL, South Ural State University, Chelyabinsk, Russian Federation

Е-mail: bakytsuleimen@mail.ru, https://orcid.org/0000-0001-9306-1045

ADILOV G.A.

Candidate of Technical Sciences, Researcher, «Hydrogen Technologies in Metallurgy» SRL, South Ural State University, Chelyabinsk, Russian Federation

Е-mail: adilovg@susu.ru, https://orcid.org/0000-0002-1012-8097

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reduction firing, extrusion briquettes (braces), pellets, iron, phosphorus, carbon monoxide, solid carbon