METHOD OF DRYING AND HEATING OF CARBON CONTAINING LINING OF STEEL-POURING LADLES Russian patent published in 2016 - IPC B22D41/02 

FIELD: metallurgy.

SUBSTANCE: invention relates to metal pouring. Drying and heating of the carbon containing lining of steel-pouring ladles are performed by electric radiation heaters in two stages. At the first stage the lining is heated to 600^oC, and heating is performed in a low-oxidating atmosphere achieved by air supply in the ladle space through the tuyere. The air flow rate is calculated by formula Q_air = k·M_k/τ_drying, m³/h, where k is the empirical coefficient considering the air volume for the oxidation of organic compounds, equal to 47.6, M_k is the ladle capacity, t, τ_drying is drying duration, h. At the second stage the lining is heated from 600°C to 1200-1400°C in an inert gas supplied to the ladle with the flow rate of (0.5-0.6)·M_k (m³/h).

EFFECT: increased strength of the carbon containing lining, and electric radiation heaters.

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