204
X. Wu
1-hearth; 2-siphon chamber; 3-furnace body; 4-uptake; 5-furnace top; 6-charging opening;
7-steel frame; 8-tuyere
Fig. 1 Structural diagram of CSC smelting furnace
CSC smelting furnace is surrounded by multi-layer cooling water jackets, with a
rectangular cross section, and is divided into a hearth, a furnace body, and a furnace
top from bottom to top.
(1) Hearth
The hearth is made of magnesia-chrome brick in the steel groove welded by steel
plate, the bottom of the hearth is inverted arch, and the edge of the hearth is laid with
horizontal steel plate to support the lower layer of the water jacket under the furnace
body. The hearth is used to stratify the slag and metal phases and discharge them out
through the siphon.
(2) Furnace Body
The furnace body is divided into the molten bath area and reburning area. The two
sides of the furnace body are provided with the molten bath tuyere and reburning
tuyere. One end of the furnace body is the charging chamber, and the other end is
the slag siphon well. The furnace body is provided with the slag outlet and siphon
metal outlet. The slag outlet is higher than the lower tuyere to form the molten bath,
i.e., the depth of the molten bath can be adjusted by the height of the slag outlet.
➀ Molten bath area: The smelting area includes lower and middle water jackets, both
of which are copper water jackets. The middle water jacket tilts outwards, and
it increases the width of the furnace, reduces the airflow velocity and effectively
reduces the fine furnace charge carried away by the furnace gas.
➁ Reburning area: The furnace wall of the reburning area is surrounded by the
molten steel jacket (upper water jacket) built with the magnesite-chrome bricks,
and reburning tuyeres are installed on both side walls. The S, CO, Sb, and Pb
sulfides and others in the furnace gas undergo oxidation reaction in this area.
X. Wu
1-hearth; 2-siphon chamber; 3-furnace body; 4-uptake; 5-furnace top; 6-charging opening;
7-steel frame; 8-tuyere
Fig. 1 Structural diagram of CSC smelting furnace
CSC smelting furnace is surrounded by multi-layer cooling water jackets, with a
rectangular cross section, and is divided into a hearth, a furnace body, and a furnace
top from bottom to top.
(1) Hearth
The hearth is made of magnesia-chrome brick in the steel groove welded by steel
plate, the bottom of the hearth is inverted arch, and the edge of the hearth is laid with
horizontal steel plate to support the lower layer of the water jacket under the furnace
body. The hearth is used to stratify the slag and metal phases and discharge them out
through the siphon.
(2) Furnace Body
The furnace body is divided into the molten bath area and reburning area. The two
sides of the furnace body are provided with the molten bath tuyere and reburning
tuyere. One end of the furnace body is the charging chamber, and the other end is
the slag siphon well. The furnace body is provided with the slag outlet and siphon
metal outlet. The slag outlet is higher than the lower tuyere to form the molten bath,
i.e., the depth of the molten bath can be adjusted by the height of the slag outlet.
➀ Molten bath area: The smelting area includes lower and middle water jackets, both
of which are copper water jackets. The middle water jacket tilts outwards, and
it increases the width of the furnace, reduces the airflow velocity and effectively
reduces the fine furnace charge carried away by the furnace gas.
➁ Reburning area: The furnace wall of the reburning area is surrounded by the
molten steel jacket (upper water jacket) built with the magnesite-chrome bricks,
and reburning tuyeres are installed on both side walls. The S, CO, Sb, and Pb
sulfides and others in the furnace gas undergo oxidation reaction in this area.