564
K. Reinharter et al.
(a)
Brick 1
(b)
Brick 2
(c)
Brick 3
Fig. 4 Slight corrosion of the magnesia component (1). Chromites (2) are highly enriched with
Sn and Sb oxides at the rims (2a). Na–Mg–Al–Fe silicate (3). Forsterite enriched with Sn and Sb
oxides (4) and monticellite (5) as reaction products
Macroscopic Overview
The residual brick thickness of the investigated sample is about 220–230 mm (the
original thickness was 342.9 mm). Parallel to the hot face running, non-filled cracks
can be observed which is an indication that cracks are formed during cooling down
phase of the smelter (Fig. 5).
Chemical Analyses
Chemically, the hot face of the brick is highly enriched with Na 2 O, SiO 2 , CaO, sulfur,
and PbO and in minor with BaO, Sb 2 O 3, and SnO 2 . The cold end represents a typical
chemical composition of this brick brand type (Table 4).
K. Reinharter et al.
(a)
Brick 1
(b)
Brick 2
(c)
Brick 3
Fig. 4 Slight corrosion of the magnesia component (1). Chromites (2) are highly enriched with
Sn and Sb oxides at the rims (2a). Na–Mg–Al–Fe silicate (3). Forsterite enriched with Sn and Sb
oxides (4) and monticellite (5) as reaction products
Macroscopic Overview
The residual brick thickness of the investigated sample is about 220–230 mm (the
original thickness was 342.9 mm). Parallel to the hot face running, non-filled cracks
can be observed which is an indication that cracks are formed during cooling down
phase of the smelter (Fig. 5).
Chemical Analyses
Chemically, the hot face of the brick is highly enriched with Na 2 O, SiO 2 , CaO, sulfur,
and PbO and in minor with BaO, Sb 2 O 3, and SnO 2 . The cold end represents a typical
chemical composition of this brick brand type (Table 4).