328
W. Wu et al.
capacity of the SKS furnace has developed from 60,000 to 800,000 tons. Not only
the lead concentrate, but also the high silver low lead silver concentrate and solid
waste including zinc leaching residue, lead paste, copper ash, steel dust and lead
glass can be treated by the SKS furnace. The lead concentrate is treated with the gold
concentrate to made matte for capturing gold, which has changed the traditional
smelting process of gold concentrate.
Plant Composition
The plant is designed to process 800 kt tons of lead concentrate and secondary lead
materials annually. The main product is lead ingots. Sulfuric acid, zinc oxide dust
and copper matte are the by-products. Zinc oxide dust and copper matte are treated
by zinc plant and copper plant respectively.
The factory consists of waste lead battery pretreatment system, lead smelting
system, and common auxiliary system. The waste lead battery pretreatment system
is composed of three parts including crushing and sorting system, lead-based alloy
production system, and waste plastic modified granulation comprehensive utilization system. The lead smelting system includes raw material storage and proportion
system, mixing granulation workshop, smelting workshop, bullion refining, sulfuric
acid, and desulfurization. The utility system consists of soft water and desalination
preparation, pulverized coal preparation station, blower and air compressor station,
oxygen plant, circulating water station, waste heat power plant, sewage treatment
plant, acid storage, etc.
Raw Materials
The raw materials treated by SKS furnace are the mixed lead bearing materials
including lead concentrate, lead paste, sulfur gold ore, and lead silver residue. The
processing scale is 800 kt/a. The composition of the mixed lead bearing materials is
shown in Table 1.
Table 1 Composition of the mixed lead bearing materials (dry basis, wt%)
Element
Pb
Zn
Cu
Fe
S
SiO 2
CaO
As
Sb
Ag *
Au *
%
40–45
4–6
0.8–1.2
8–12
15–18
5–6
0.5–1
0.4–0.6
0.4–0.6
1000–1200
3–4
Note: * Represents g/t
W. Wu et al.
capacity of the SKS furnace has developed from 60,000 to 800,000 tons. Not only
the lead concentrate, but also the high silver low lead silver concentrate and solid
waste including zinc leaching residue, lead paste, copper ash, steel dust and lead
glass can be treated by the SKS furnace. The lead concentrate is treated with the gold
concentrate to made matte for capturing gold, which has changed the traditional
smelting process of gold concentrate.
Plant Composition
The plant is designed to process 800 kt tons of lead concentrate and secondary lead
materials annually. The main product is lead ingots. Sulfuric acid, zinc oxide dust
and copper matte are the by-products. Zinc oxide dust and copper matte are treated
by zinc plant and copper plant respectively.
The factory consists of waste lead battery pretreatment system, lead smelting
system, and common auxiliary system. The waste lead battery pretreatment system
is composed of three parts including crushing and sorting system, lead-based alloy
production system, and waste plastic modified granulation comprehensive utilization system. The lead smelting system includes raw material storage and proportion
system, mixing granulation workshop, smelting workshop, bullion refining, sulfuric
acid, and desulfurization. The utility system consists of soft water and desalination
preparation, pulverized coal preparation station, blower and air compressor station,
oxygen plant, circulating water station, waste heat power plant, sewage treatment
plant, acid storage, etc.
Raw Materials
The raw materials treated by SKS furnace are the mixed lead bearing materials
including lead concentrate, lead paste, sulfur gold ore, and lead silver residue. The
processing scale is 800 kt/a. The composition of the mixed lead bearing materials is
shown in Table 1.
Table 1 Composition of the mixed lead bearing materials (dry basis, wt%)
Element
Pb
Zn
Cu
Fe
S
SiO 2
CaO
As
Sb
Ag *
Au *
%
40–45
4–6
0.8–1.2
8–12
15–18
5–6
0.5–1
0.4–0.6
0.4–0.6
1000–1200
3–4
Note: * Represents g/t