A Critical Review on Generation, Characteristics …
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Table 2 Composition of the lead-zinc oxidized ore (dry basis, wt%)
Element Zn
Pb
Cu
Fe
S
As
Sb
Ag a Ge a SiO 2 CaO
%
17.82 4.98 0.01 11.6 4.25 0.16 0.01 44
33
4.8
15.5
a Represents g/t
Fig. 4 Schematic diagram of the side-submerged combustion melting furnace
Table 3 Main technical and economic indexes of the melting furnace process
No. Item
Unit
Value
1
Total day work
d/a
330
2
Hearth area of the side-submerged combustion melting
furnace
m 2
16.6
3
Number of melting furnaces
1
4
Processing capacity of zinc leach residue
kt/a
115.5 (dry basis)
5
Processing capacity of lead-zinc oxidized ore
kt/a
82.5 (dry basis)
6
Coal consumption
t/a
2.11 × 10 4
7
Industrial oxygen consumption
Nm 3 /a 4.97 × 10 7 (85%)
8
Natural gas consumption
Nm 3 /a 1.58 × 10 7
9
Annual production of zinc oxide dust
t/a
2.45 × 10 4
Zn content
%
28.99
Pb content
%
33.88