As is known, industrial slags produced by high-carbon ferrochrome are a complex composition consisting
of oxides of Cr2O3, CaO, MgO, FeO, SiO2, Al2O3, as well as entangled alloy crowns, which are losses (Sgmet). In order
to reduce the losses in the form of alloy crowns, experiments were carried out in the laboratory. The article presents the
results of studying the properties of the slag of the production of high-carbon ferrochrome by using effective, affordable
and common materials as a flux additive in accordance with their accepted weights in the mixture. The experiments were
carried out in a high – temperature Tamman resistance furnace using the following fluxing materials-expanded clay,
calcium borate, and refined ferrochrome slag. As a result of the conducted experiments, it was revealed that of the above
materials, expanded clay is the most technologically advanced and suitable material, which reduced the softening
temperature, melting of slag and the content of Sgmet in the initial slag, which in the future is subject to testing as a flux
in industrial conditions.
Analyzing the data obtained, it could be concluded that it is preferable to use boron-containing fluxes (calcium
borate, boron-stabilized RFX slag). However, given the cost of calcium borate (500,000-600,000 tenge per 1 ton) , its use
is economically impractical. In addition, as production practice shows, calcium borate is unevenly distributed in the
volume of slag, which also reduces the efficiency of its use.