GASIFIER INNER SURFACE LINING Russian patent published in 2010 - IPC C04B35/12 

FIELD: chemistry.

SUBSTANCE: refractory inner lining of a gasifier is made from sintered material which contains at least 45 wt % chromium oxide (Cr₂O₃), at least 1 wt % zirconium oxide, wherein at least 30 wt % of said zirconium oxide (ZrO₂) is stabilised in cubic and/or tetragonal form, as well as silicon oxide in amount of 3 wt % and aluminium oxide. Total content of oxides of chromium, zirconium, aluminium, silicon and calcium is over 95 wt %. Preferably, the material contains over 80 wt % chromium oxide, over 1 and less than 10 wt % aluminium oxide and over 6 and less than 7 wt % zirconium oxide, as well as at least one additive which stabilises or does not stabilise zirconium oxide, selected from a group comprising: CaO, MgO, Y₂O₃, TiO₂.

EFFECT: higher corrosion resistance of the gasifer lining.

31 cl, 3 tbl