Application of CSC Technology in Nonferrous Metallurgy
203
Technical Characteristics
(1) The furnace charge has strong adaptability and is suitable for smelting various
metals: Copper, lead, nickel, antimony, zinc, and the like, as well as the treatment
of various waste residues, electronic wastes, municipal wastes, and the like;
(2) Simple material preparation: The particle size is not strictly required, and the
powder is granulated (15–25 mm) with the moisture content of not more than
15%;
(3) The oxygen-enriched air is blown into the molten bath from the nozzles on
both sides of the furnace, and the melt is stirred violently, which intensifies
the turning of the upper melt. The mass transfer and heat exchange are rapid,
which accelerates the melting speed of refractory components in slag. The productivity of the furnace is high, for example, the lead, copper, and nickel smelting reach 80–100 t/m
2 d, and the specific capacity of slag smelting is generally
50–80 t/m
2 d;
(4) Continuous operation can be realized in the smelting process of metals such as
lead, namely charging and slag tapping;
(5) Simple and cheap fuel and reductant: Coal;
(6) Structural characteristics of oxygen-enriched air side-blown tuyere: The tuyere
is simple in structure, which can only blow oxygen-enriched air, and also can
blow pulverized coal, gas, natural gas, etc., with water-cooled, has a service
life of more than 2 years, and is convenient to install and replace; the tuyere is
provided with a bott stick. When the furnace stops blowing for some reason,
the bott stick is inserted to prevent the melt in the furnace from flowing out, no
matter it is the tuyere only for blowing oxygen-enriched air or blowing other fuel
at the same time, so as to facilitate the hot shutdown and other operations in the
production process. The oxygen-enriched air pressure is 0.06–0.12 MPa, and
the oxygen pressure of the oxygen generation station is not more than 0.2 MPa.
Main Equipment—CSC Smelting Furnace
The main equipment of, CSC technology is CSC smelting furnace, whose overall
structure is similar to that of Vanukov furnace, but the tuyere structure type under
different smelting conditions, the design of tuyere depth is based on the characteristics
of processed materials, and optimization of the gap between the tuyeres are better
conducive to the agitation of the melting pool, the copper water jacket of the furnace
platform is better protected by the back platform design, the upper part adopts the
innovative sandwich structure, and the overall furnace life is improved. According
to the type of materials, we have innovated and optimized the bosh angle to adapt
to the smelting process of different materials such as copper, nickel, lead, and slag
treatment. The main structure is shown in Fig. 1.
203
Technical Characteristics
(1) The furnace charge has strong adaptability and is suitable for smelting various
metals: Copper, lead, nickel, antimony, zinc, and the like, as well as the treatment
of various waste residues, electronic wastes, municipal wastes, and the like;
(2) Simple material preparation: The particle size is not strictly required, and the
powder is granulated (15–25 mm) with the moisture content of not more than
15%;
(3) The oxygen-enriched air is blown into the molten bath from the nozzles on
both sides of the furnace, and the melt is stirred violently, which intensifies
the turning of the upper melt. The mass transfer and heat exchange are rapid,
which accelerates the melting speed of refractory components in slag. The productivity of the furnace is high, for example, the lead, copper, and nickel smelting reach 80–100 t/m
2 d, and the specific capacity of slag smelting is generally
50–80 t/m
2 d;
(4) Continuous operation can be realized in the smelting process of metals such as
lead, namely charging and slag tapping;
(5) Simple and cheap fuel and reductant: Coal;
(6) Structural characteristics of oxygen-enriched air side-blown tuyere: The tuyere
is simple in structure, which can only blow oxygen-enriched air, and also can
blow pulverized coal, gas, natural gas, etc., with water-cooled, has a service
life of more than 2 years, and is convenient to install and replace; the tuyere is
provided with a bott stick. When the furnace stops blowing for some reason,
the bott stick is inserted to prevent the melt in the furnace from flowing out, no
matter it is the tuyere only for blowing oxygen-enriched air or blowing other fuel
at the same time, so as to facilitate the hot shutdown and other operations in the
production process. The oxygen-enriched air pressure is 0.06–0.12 MPa, and
the oxygen pressure of the oxygen generation station is not more than 0.2 MPa.
Main Equipment—CSC Smelting Furnace
The main equipment of, CSC technology is CSC smelting furnace, whose overall
structure is similar to that of Vanukov furnace, but the tuyere structure type under
different smelting conditions, the design of tuyere depth is based on the characteristics
of processed materials, and optimization of the gap between the tuyeres are better
conducive to the agitation of the melting pool, the copper water jacket of the furnace
platform is better protected by the back platform design, the upper part adopts the
innovative sandwich structure, and the overall furnace life is improved. According
to the type of materials, we have innovated and optimized the bosh angle to adapt
to the smelting process of different materials such as copper, nickel, lead, and slag
treatment. The main structure is shown in Fig. 1.