Foundry coke of various manufacturers
(fraction +40 mm., +60 mm., +80 mm.). Coke is produced by coking (heating at high temperatures (950 -1150 °C) without access to air of natural fuel - coals of certain grades). It is used mainly in the foundry industry as a fuel.
Ferrosilicon of FeSi-45 grade (RF).
Ferrosilicon (FeSi) is an alloy of iron and silicon with variable silicon content, usually from 40% to 90%. It is used as a so-called ligature alloy in steel production, which is added in small quantities in order to adjust the properties of the melt, the cooling process and the finished product. The main advantage of FeSi is its deoxidising effect (reducing metals from their oxides), it also helps to prevent carbon loss. Ferrosilicon is also used in electrode coatings and in the production of silicon, hydrogen and magnesium. Ferrosilicon is produced in either a blast furnace or an electric arc furnace by reducing silica sand (SiO2) with coke in the presence of iron. FeSi is sieved into different grades by size for further use.
Limestone
Limestone is a mineral formation, including, as a rule, at least 95% CaCO3, with minor admixtures of MgCO3, SiO2 and other compounds. It is used in metallurgical and sugar industries.
