HIGHLY BASIC AGGLOMERATE PRODUCTION METHOD AND HIGHLY BASIC AGGLOMERATE OBTAINED BY THIS METHOD Russian patent published in 2023 - IPC C22B1/16 

FIELD: metallurgy.

SUBSTANCE: production of highly basic agglomerate using recyclable resources. Highly basic agglomerate is obtained from a charge containing a slag mixture, iron ore additive or scale, flux, fuel, return, and dust from metallurgical production. The method includes dosing, mixing and sintering of components. In this case, the ratio of components in the charge is as follows, wt.%: slag mixture – 35-50; iron ore additive or scale – 20-40; return – 10-30; dust from metallurgical production – no more than 7; flux – no more than 12; fuel – no more than 2.5. In the highly basic agglomerate obtained by this method, the ratio of oxides of iron, magnesium, silicon, calcium, aluminium is as follows, wt.%: Fe_total - 37.5-51.0; FeO - 6.0-10.5; MgO - 3.7-6.4; Al₂O₃ - up to 3.0. In this case, the ratio (CaO + MgO) / (SiO₂ + Al₂O₃) is more than 2.5, but less than 6.1, with the MgO/CaO ratio being in the range from 0.13 to 0.29. Moreover, the resulting agglomerate has a basicity of CaO/SiO₂, which is in the range of 3.0-5.0 units.

EFFECT: increased amount of recyclable slag when a larger amount of usable agglomerate of a given composition is released.

12 cl, 3 tbl