Preliminary communication

Development of carbon ferrochrome smelting technology using high-ash coal

Ye. Kuatbay orcid.org/0000-0002-8400-3537 ; Karaganda Industrial University, Temirtau, Kazakhstan
A. Nurumgaliyev ; Karaganda Industrial University, Temirtau, Kazakhstan
T. Zhuniskaliyev orcid.org/0000-0001-9757-0605 ; Karaganda Industrial University, Temirtau, Kazakhstan
S. Smailov orcid.org/0000-0001-8871-5905 ; Karaganda Industrial University, Temirtau, Kazakhstan
A. Yerzhanov ; Karaganda Industrial University, Temirtau, Kazakhstan
G. Bulekova ; Karaganda Industrial University, Temirtau, Kazakhstan

Abstract

This article presents the results of experimental tests using coal from the Saryadyr deposit as a reducing agent for the smelting of carbonaceous ferrochrome. Large-scale laboratory tests were carried out on the smelting of carbonaceous ferrochrome in an ore-thermal furnace with a capacity of 200 kV · A. X-ray diffraction analysis of the obtained alloy and slag on a diffractometer was carried out. The presence of forsterite 2MgO·SiO₂ and magnesitochromite Cr₂Fe_0,2Mg_0,8O₄ in the slag was revealed, as well as the FeCr compound and the absence of silicide compounds. The optimal percentage of replacing traditional coke with coal up to 30% (by weight) has been found, which can significantly reduce the specific consumption of quartzite in the charge.

Keywords

carbonaceous ferrochrome; high-ash coal; chemical composition; coal-thermal process; X-ray diffraction (XRD)

Hrčak ID:

274033

URI

https://hrcak.srce.hr/274033

Publication date:

1.7.2022.

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