CN103667738A - Oxygen-enriched side-blowing dual-area bath smelting furnace and method for smelting copper matte by using copper-containing complex material - Google Patents
Oxygen-enriched side-blowing dual-area bath smelting furnace and method for smelting copper matte by using copper-containing complex material Download PDFInfo
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- CN103667738A CN103667738A CN201310747690.2A CN201310747690A CN103667738A CN 103667738 A CN103667738 A CN 103667738A CN 201310747690 A CN201310747690 A CN 201310747690A CN 103667738 A CN103667738 A CN 103667738A
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Abstract
The invention discloses an oxygen-enriched side-blowing dual-area bath smelting furnace and a method for smelting copper matte by using copper-containing complex materials. The bath smelting furnace comprises a furnace body and a bath. The furnace body consists of a furnace lining, water jacket, a charging port, a smoke hood and a furnace body air vent. The bath consists of a slag mouth, a discharging port, a bath air vent, an auxiliary smoke pipe and an auxiliary charging port. The bath is arranged on the side surface of the furnace body. The upper mouth of the bath is communicated with the bottom surface of the furnace body through a melt flow guide port. The method comprises the steps of material mixing, oxygen-enriched side-blowing dual-area bath smelting, smoke dust reuse and slag water quenching. The oxygen-enriched side-blowing dual-area bath smelting furnace disclosed by the invention is a zoned structure, oxygen-enriched air is blown inside respectively from a furnace body pass port and the bath air vent, and a smelting process and a slag clarification process are enhanced. The oxygen-enriched side-blowing dual-area bath smelting furnace and the method for smelting copper matte by using copper-containing complex materials have the advantages that the combustion is full, the recovery rate is high, the operation is easy to perform, unorganized emission is less, the resources are comprehensively utilized, the energy is saved, the consumption is reduced, the coke consumption can be decreased by 10 percent, the hearth specific productivity is improved by 15 percent, the electricity and water consumption is decreased by 12 percent and the product quality is improved.
Description
Technical field
The invention belongs to non-ferrous metal metallurgy technical field, be specifically related to a kind of simple process, working stability is reliable, the method for the oxygen-enriched side-blown dual-area bath smelting furnace based on oxygen-enriched side-blown dual-area bath smelting furnace technique and cupric complex feedstock refining matte thereof.
Background technology
In the pyrometallurgical smelting process of non-ferrous metal copper, generally need first copper ore concentrates, solvent and coke according to a certain ratio and order, to add in smelting furnace, under high temperature, strong oxidizing property atmosphere, carry out half self-heating or pyritic smelting, copper sulfide concentrate fusing is generated to the eutectic-matte of metallic sulfide.The sulfide of copper gathers in matte with stable low price sulphide state richness.The nature difference of matte and slag is very big, can clarified separation, thereby can propose matte, enter blowing flow process, and then output blister copper.
During pyrometallurgical smelting copper ore concentrates, be generally first by raw ore, by ore dressing process, make copper content in material bring up to 20 ~ 30%, as copper ore concentrates, add closed blast furnace, reverberatory furnace, electric furnace or Flash Smelting Furnace to carry out matte smelting, the matte of output is then sent into converter and is blown into blister copper.Existing copper metallurgy technique has flash smelting, top blast submergence melting, Rouyn-Noranda melting, silver copper metallurgy, bottom-blown smelting, Wa Niukefu side-blown melting etc., use oxygen-rich air to blast in stove, form solid-liquid-gas three-phase smelting zone, intensified smelting process, accelerates speed of melting.But because air port is generally located at restoration of lower stack, the oxygen strong stirring smelting zone blasting, without rational settlement separate space, the matte of its generation and slag are subject to stir impacting, cannot quick and complete separation, in slag, copper content is higher.At present, the domestic bath smelting type of furnace newly developed, also has by increase partition wall in stove, distinguish smelting zone and realize the complete separated of matte and slag with negative area, but need larger hearth area, and partition wall washes away by melt in hot environment for a long time, care and maintenance difficulty.For this reason, the inventor, through concentrating on studies, uses for reference Cai Waniukefu side-blown melting technology, has developed the method for a kind of oxygen-enriched side-blown dual-area bath smelting furnace and melting matte thereof, evidence, and effect is good.
Summary of the invention
The first object of the present invention is to be to provide a kind of simple process, the reliable oxygen-enriched side-blown dual-area of working stability bath smelting furnace; The second object of the present invention is to provide a kind of and utilizes cupric complex feedstock to smelt the method for matte based on oxygen-enriched side-blown dual-area bath smelting furnace.
The first object of the present invention is to realize like this, comprise body of heater and molten bath, described body of heater is comprised of furnace lining, water jacket, charging opening, petticoat pipe, body of heater ventilation opening, described molten bath is comprised of slag notch, drain hole, molten bath ventilation opening, secondary smoke pipe, secondary charging opening, the side of described body of heater arranges molten bath, and described molten bath is suitable for reading to be communicated with body of heater underrun fused mass flow guiding mouth.
The second object of the present invention is achieved in that and comprises batch mixing, oxygen-enriched side-blown dual-area bath smelting, flue dust reuse, furnace slag granulating operation, specifically comprises:
A, batch mixing: according to the total content of Cu, Fe, S in copper-containing raw material, the flux that adds weight ratio 8 ~ 20%, copper-contained material and flux are pressed containing CaO:10 ~ 15%, the part by weight of MgO:7 ~ 9%, Fe/SiO2 is that 1.5 ~ 1.8 proportioning mixes, and be pressed into brick or group by brick press, send into oxygen-enriched side-blown dual-area bath smelting furnace after air-dry;
B, oxygen-enriched side-blown dual-area bath smelting: the raw material preparing and coke are sent into bath smelting furnace in batches, send into O at body of heater ventilation opening and molten bath ventilation opening respectively
2concentration is 24 ~ 40% oxygen-rich air, and air port pressure is 0.12 ~ 0.15Mpa, and minute charging, melting, clarification, slagging, blowing four-stage generate matte, slag and flue gas;
C, flue dust reuse: the flue gas that oxygen-enriched side-blown dual-area bath smelting furnace produces is separated into flue dust and sulfur-containing smoke gas through dust arrester installation, and after flue dust collecting, as copper-contained material and raw material mixing reuse, flue gas discharges after desulfurization;
D, furnace slag granulating: the slag that oxygen-enriched side-blown dual-area bath smelting furnace produces is cooling fast through recirculated water, form Water Quenching Slag, delivers in cinder yard.
Oxygen-enriched side-blown dual-area of the present invention bath smelting furnace is zonal structure, from body of heater, by mouth and molten bath ventilation opening, be blown into oxygen-rich air respectively, intensified smelting process and slag clarifying process, can make full use of low-grade mineral resource and secondary resource, and the compatibility of raw material is strong, slag grade is low, increases substantially thermo-efficiency, and energy conservation and consumption reduction effects is remarkable.The present invention has sufficient combustion, and the rate of recovery is high, easy to operate, economic and practical, and uncontrollable discharge is few, comprehensive utilization of resources, and the advantage such as energy-saving and cost-reducing, this smelting furnace can reduce burnt consumption 10%, and specific capacity has improved 15%, improves the quality of products, and reduces power consumption, water consumption 12%.
Accompanying drawing explanation
Fig. 1 is that one-piece construction of the present invention is partly cutd open schematic diagram;
Fig. 2 is furnace binding schematic diagram of the present invention;
Fig. 3 is process flow diagram of the present invention;
In figure: 1-furnace lining, 2-water jacket, 3-charging opening, 4-petticoat pipe, 5-slag notch, 6-drain hole, 7-body of heater ventilation opening, 8-molten bath ventilation opening, 9-fused mass flow guiding mouth, the secondary smoke pipe of 10-, the secondary charging opening of 11-, 12-dross nail.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated, but never in any form the present invention is limited, and any conversion or the replacement based on training centre of the present invention, done, all belong to protection scope of the present invention.
As shown in Figure 1 and Figure 2, the present invention includes body of heater and molten bath, described body of heater is comprised of furnace lining 1, water jacket 2, charging opening 3, petticoat pipe 4, body of heater ventilation opening 7, described molten bath is comprised of slag notch 5, drain hole 6, molten bath ventilation opening 8, secondary smoke pipe 10, secondary charging opening 11, the side of described body of heater arranges molten bath, and described molten bath is suitable for reading to be communicated with body of heater underrun fused mass flow guiding mouth 9.
Described top, molten bath arranges secondary smoke pipe 10, secondary charging opening 11, described molten bath side wall upper part arranges slag notch 5, described sidewall bottom, molten bath arranges drain hole 6, and described bath wall middle part is symmetrical arranged molten bath ventilation opening 8, and described top, molten bath is communicated with body of heater by fused mass flow guiding mouth 9.
Described fused mass flow guiding mouth 9 connects body of heater end higher than the one end that connects molten bath, and its angle of inclination is 1 ~ 10 °, from body of heater, to molten bath direction, is bell mouth shape.
Described body of heater ventilation opening 7 is two rows, is crisscross arranged.
Described secondary smoke pipe 10 is communicated with upper of furnace body.
As shown in Figure 3, the present invention is based on oxygen-enriched side-blown dual-area bath smelting furnace and utilize copper-contained material copper smelting method, specifically comprise:
A, batch mixing: according to the total content of Cu, Fe, S in copper-containing raw material, the flux that adds weight ratio 8 ~ 20%, copper-contained material and flux are pressed containing CaO:10 ~ 15%, the part by weight of MgO:7 ~ 9%, Fe/SiO2 is that 1.5 ~ 1.8 proportioning mixes, and be pressed into brick or group by brick press, send into oxygen-enriched side-blown dual-area bath smelting furnace after air-dry;
B, oxygen-enriched side-blown dual-area bath smelting: the raw material preparing and coke are sent into bath smelting furnace in batches, send into O at body of heater ventilation opening and molten bath ventilation opening respectively
2concentration is 24 ~ 40% oxygen-rich air, and air port pressure is 0.12 ~ 0.15Mpa, and minute charging, melting, clarification, slagging, blowing four-stage generate matte, slag and flue gas;
C, flue dust reuse: the flue gas that oxygen-enriched side-blown dual-area bath smelting furnace produces is separated into flue dust and sulfur-containing smoke gas through dust arrester installation, and after flue dust collecting, as copper-contained material and raw material mixing reuse, flue gas discharges after desulfurization;
D, furnace slag granulating: the slag that oxygen-enriched side-blown dual-area bath smelting furnace produces is cooling fast through recirculated water, form Water Quenching Slag, delivers in cinder yard.
Described flux is carbide slag and quartzite, utilizes industrial residue to prepare burden, and reduces costs.
Described A operation copper-contained material and flux are pressed containing CaO:12%, the part by weight of MgO:8%, and the proportioning that Fe/SiO2 is 1.5 mixes.
In the described B operation clarification stage, from molten bath, secondary charging opening adds coke, and amount of coke adds according to 3 ~ 7% of slag weight.
In the described B operation clarification stage, molten bath ventilation opening is sent into O
2concentration is 25 ~ 30% oxygen-rich air, and air port pressure is 0.14Mpa.
Oxygen-enriched side-blown dual-area of the present invention bath smelting furnace is zonal structure, from body of heater, by mouth and molten bath ventilation opening, be blown into oxygen-rich air respectively, intensified smelting process and slag clarifying process, can make full use of low-grade mineral resource and secondary resource, and the compatibility of raw material is strong, slag grade is low, increases substantially thermo-efficiency, and energy conservation and consumption reduction effects is remarkable.The present invention can use more than 1% material of cupric, and in slag, copper content, lower than 0.8%, reduces burnt consumption 10%, and specific capacity has improved 15%, reduces power consumption, water consumption 12%, and product cupric reaches 20 ~ 40%, improves the quality of products.
The material of cupric 1.8%, adds the carbide slag of weight ratio 8%, by copper-contained material and flux by containing CaO:10%, MgO:7%, part by weight, the proportioning that Fe/SiO2 is 1.5 mixes.And be pressed into brick or group by brick press, and send into oxygen-enriched side-blown dual-area bath smelting furnace after air-dry, coke adds in smelting furnace according to 20% of raw material weight; At body of heater ventilation opening and molten bath ventilation opening, send into O respectively
2concentration is 24% oxygen-rich air, air port pressure is 0.15Mpa, the matte of output cupric 20%, the slag of cupric 0.5%, after matte fragmentation, put in storage, slag is sent into cinder yard after making to be cooled with circulating water, and flue gas is separated into flue dust and sulfur-containing smoke gas through dust arrester installation, after flue dust collecting, as copper-contained material and raw material mixing reuse, flue gas discharges after desulfurization.
The material of cupric 2%, add the quartzite of weight ratio 20% and the mixture of carbide slag, copper-contained material and flux are pressed containing CaO:15%, the part by weight of MgO:9%, Fe/SiO2 is that 1.8 proportioning mixes, and be pressed into brick or group by brick press, and send into oxygen-enriched side-blown dual-area bath smelting furnace after air-dry, coke adds in smelting furnace according to 18% of raw material weight; At body of heater ventilation opening and molten bath ventilation opening, send into O respectively
2concentration is 40% oxygen-rich air, air port pressure is 0.12Mpa, the matte of output cupric 32%, the slag of cupric 0.4%, after matte fragmentation, put in storage, slag is sent into cinder yard after making to be cooled with circulating water, and flue gas is separated into flue dust and sulfur-containing smoke gas through dust arrester installation, after flue dust collecting, as copper-contained material and raw material mixing reuse, flue gas discharges after desulfurization.
The material of cupric 3%, the quartzite that adds weight ratio 15%, copper-contained material and flux are pressed containing CaO:12%, the part by weight of MgO:8%, Fe/SiO2 is that 1.5 proportioning mixes, and be pressed into brick or group by brick press, and send into oxygen-enriched side-blown dual-area bath smelting furnace after air-dry, coke adds in smelting furnace according to 20% of raw material weight; At body of heater ventilation opening and molten bath ventilation opening, send into O respectively
2concentration is 27% oxygen-rich air, air port pressure is 0.14Mpa, the coke adding in molten bath is 3% of slag amount, the matte of output cupric 35%, the slag of cupric 0.5%, puts in storage after matte fragmentation, slag is sent into cinder yard after making to be cooled with circulating water, flue gas is separated into flue dust and sulfur-containing smoke gas through dust arrester installation, and after flue dust collecting, as copper-contained material and raw material mixing reuse, flue gas discharges after desulfurization.
The material of cupric 3%, the quartzite that adds weight ratio 15%, copper-contained material and flux are pressed containing CaO:12%, the part by weight of MgO:8%, Fe/SiO2 is that 1.5 proportioning mixes, and be pressed into brick or group by brick press, and send into oxygen-enriched side-blown dual-area bath smelting furnace after air-dry, coke adds in smelting furnace according to 20% of raw material weight; At body of heater ventilation opening and molten bath ventilation opening, send into O respectively
2concentration is 27% oxygen-rich air, air port pressure is 0.14Mpa, the coke adding in molten bath is 7% of slag amount, the matte of output cupric 39%, the slag of cupric 0.5%, puts in storage after matte fragmentation, slag is sent into cinder yard after making to be cooled with circulating water, flue gas is separated into flue dust and sulfur-containing smoke gas through dust arrester installation, and after flue dust collecting, as copper-contained material and raw material mixing reuse, flue gas discharges after desulfurization.
The material of cupric 2.3%, the quartzite and the carbide slag that add weight ratio 10%, copper-contained material and flux are pressed containing CaO:11%, the part by weight of MgO:7%, Fe/SiO2 is that 1.7 proportioning mixes, and be pressed into brick or group by brick press, and send into oxygen-enriched side-blown dual-area bath smelting furnace after air-dry, coke adds in smelting furnace according to 15% of raw material weight; At body of heater ventilation opening and molten bath ventilation opening, send into O respectively
2concentration is 29% oxygen-rich air, air port pressure is 0.13Mpa, the coke adding in molten bath is 5% of slag amount, the matte of output cupric 35%, the slag of cupric 0.6%, puts in storage after matte fragmentation, slag is sent into cinder yard after making to be cooled with circulating water, flue gas is separated into flue dust and sulfur-containing smoke gas through dust arrester installation, and after flue dust collecting, as copper-contained material and raw material mixing reuse, flue gas discharges after desulfurization.
The material of cupric 2%, the quartzite that adds weight ratio 12%, copper-contained material and flux are pressed containing CaO:14%, the part by weight of MgO:7%, Fe/SiO2 is that 1.6 proportioning mixes, and be pressed into brick or group by brick press, and send into oxygen-enriched side-blown dual-area bath smelting furnace after air-dry, coke adds in smelting furnace according to 18% of raw material weight; At body of heater ventilation opening and molten bath ventilation opening, send into O respectively
2concentration is 30% oxygen-rich air, air port pressure is 0.14Mpa, the matte of output cupric 27%, the slag of cupric 0.8%, after matte fragmentation, put in storage, slag is sent into cinder yard after making to be cooled with circulating water, and flue gas is separated into flue dust and sulfur-containing smoke gas through dust arrester installation, after flue dust collecting, as copper-contained material and raw material mixing reuse, flue gas discharges after desulfurization.
Claims (10)
1. an oxygen-enriched side-blown dual-area bath smelting furnace, comprise body of heater and molten bath, described body of heater is comprised of furnace lining (1), water jacket (2), charging opening (3), petticoat pipe (4), body of heater ventilation opening (7), described molten bath is comprised of slag notch (5), drain hole (6), molten bath ventilation opening (8), secondary smoke pipe (10), secondary charging opening (11), it is characterized in that: the side of described body of heater arranges molten bath, described molten bath is suitable for reading to be communicated with body of heater underrun fused mass flow guiding mouth (9).
2. bath smelting furnace according to claim 1, it is characterized in that: described top, molten bath arranges secondary smoke pipe (10), secondary charging opening (11), described molten bath side wall upper part arranges slag notch (5), described sidewall bottom, molten bath arranges drain hole (6), described bath wall middle part is symmetrical arranged molten bath ventilation opening (8), and described top, molten bath is communicated with body of heater by fused mass flow guiding mouth (9).
3. bath smelting furnace according to claim 1 and 2, is characterized in that: described fused mass flow guiding mouth (9) connects body of heater end higher than the one end that connects molten bath, and its angle of inclination is 1 ~ 10 °, from body of heater, to molten bath direction, is bell mouth shape.
4. bath smelting furnace according to claim 1, is characterized in that: described body of heater ventilation opening (7) is two rows, is crisscross arranged.
5. bath smelting furnace according to claim 2, is characterized in that: described secondary smoke pipe (10) is communicated with upper of furnace body.
6. based on smelting furnace claimed in claim 1, utilize a copper-contained material copper smelting method, it is characterized in that: specifically comprise:
A, batch mixing: according to the total content of Cu, Fe, S in copper-containing raw material, add the flux of weight ratio 8 ~ 20%, copper-contained material and flux are pressed containing CaO:10 ~ 15% to the part by weight of MgO:7 ~ 9%, Fe/SiO
2be that 1.5 ~ 1.8 proportioning mixes, and be pressed into brick or group by brick press, send into oxygen-enriched side-blown dual-area bath smelting furnace after air-dry;
B, oxygen-enriched side-blown dual-area bath smelting: the raw material preparing and coke are sent into bath smelting furnace in batches, send into O at body of heater ventilation opening and molten bath ventilation opening respectively
2concentration is 24 ~ 40% oxygen-rich air, and air port pressure is 0.12 ~ 0.15Mpa, and minute charging, melting, clarification, slagging, blowing four-stage generate matte, slag and flue gas;
C, flue dust reuse: the flue gas that oxygen-enriched side-blown dual-area bath smelting furnace produces is separated into flue dust and sulfur-containing smoke gas through dust arrester installation, and after flue dust collecting, as copper-contained material and raw material mixing reuse, flue gas discharges after desulfurization;
D, furnace slag granulating: the slag that oxygen-enriched side-blown dual-area bath smelting furnace produces is cooling fast through recirculated water, form Water Quenching Slag, delivers in cinder yard.
7. smelting furnace according to claim 6 utilizes copper-contained material copper smelting method, it is characterized in that: described flux is carbide slag and quartzite.
8. smelting furnace according to claim 6 utilizes copper-contained material copper smelting method, it is characterized in that: described A operation copper-contained material and flux are pressed containing CaO:12%, the part by weight of MgO:8%, and the proportioning that Fe/SiO2 is 1.5 mixes.
9. smelting furnace according to claim 6 utilizes copper-contained material copper smelting method, it is characterized in that: in the described B operation clarification stage, from molten bath, secondary charging opening adds coke, and amount of coke adds according to 3 ~ 7% of slag weight.
10. smelting furnace according to claim 6 utilizes copper-contained material copper smelting method, it is characterized in that: in the described B operation clarification stage, molten bath ventilation opening is sent into O
2concentration is 25 ~ 30% oxygen-rich air, and air port pressure is 0.14Mpa.
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| CN108220518A (en) * | 2018-02-05 | 2018-06-29 | 高师敏 | A kind of high-chromic vanadium-titanium ferroferrite smelting process and device |
| CN110976481A (en) * | 2019-12-09 | 2020-04-10 | 洛南环亚源铜业有限公司 | Copper-containing hazardous waste treatment process |
| CN111719045A (en) * | 2019-03-21 | 2020-09-29 | 个旧市锦星锑业有限公司 | Oxygen-enriched intensified smelting method for horizontal reduction furnace |
| CN111850308A (en) * | 2020-07-22 | 2020-10-30 | 湖北大江环保科技股份有限公司 | Method for treating copper smoke dust by using oxygen-enriched side-blown reduction smelting furnace |
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| CN108220518A (en) * | 2018-02-05 | 2018-06-29 | 高师敏 | A kind of high-chromic vanadium-titanium ferroferrite smelting process and device |
| CN111719045A (en) * | 2019-03-21 | 2020-09-29 | 个旧市锦星锑业有限公司 | Oxygen-enriched intensified smelting method for horizontal reduction furnace |
| CN110976481A (en) * | 2019-12-09 | 2020-04-10 | 洛南环亚源铜业有限公司 | Copper-containing hazardous waste treatment process |
| CN110976481B (en) * | 2019-12-09 | 2021-10-08 | 洛南环亚源铜业有限公司 | Copper-containing hazardous waste treatment process |
| CN111850308A (en) * | 2020-07-22 | 2020-10-30 | 湖北大江环保科技股份有限公司 | Method for treating copper smoke dust by using oxygen-enriched side-blown reduction smelting furnace |
| CN111850308B (en) * | 2020-07-22 | 2021-04-16 | 湖北大江环保科技股份有限公司 | Method for treating copper smoke dust by using oxygen-enriched side-blown reduction smelting furnace |
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| CN103667738B (en) | 2015-08-05 |
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