CN203464677U - Energy-saving sealed blast furnace - Google Patents
Energy-saving sealed blast furnace Download PDFInfo
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- CN203464677U CN203464677U CN201320492832.0U CN201320492832U CN203464677U CN 203464677 U CN203464677 U CN 203464677U CN 201320492832 U CN201320492832 U CN 201320492832U CN 203464677 U CN203464677 U CN 203464677U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The utility model discloses an energy-saving sealed blast furnace, which comprises a furnace top, a furnace body, a bed, an air port and a throat port, wherein the furnace top is provided with a feed device and a flue gas discharge port, an air inlet end of the air port is connected with an air blower, the height H of a furnace body stock column is not smaller than 3.8m, and the total pressure of the air blower is not smaller than 14.7kPa. The energy-saving sealed blast furnace is obvious in effects of comprehensive recovery of nonferrous metals such as copper and nickel and the like from industrial solid wastes and waste metal, and has the advantages that the energy-saving sealed blast furnace is high in efficiency of heat utilization, and reduces energy consumption and production cost.
Description
Technical field
The utility model relates to a kind of energy-conservation closed blast furnace, is applicable to the non-ferrous metal such as Recovering Copper, nickel from industrial solid wastes and old metal, belongs to comprehensive utilization of resources field.
Background technology
Traditional closed blast furnace that refines the non-ferrous metals such as copper, nickel from concentrate, because the needs of electrostatic precipitation and relieving haperacidity etc., blast furnace exit gas temperature must be greater than 450 ℃, because the higher flue gas of stock column height travel distance is longer, thermal loss is more, flue-gas temperature is lower, and stock column height can not be too high like this; In addition, because concentrate raw material is powder, the problems such as the too high easy generation furnace accretion of stock column; Moreover the closed blast furnace smelting process of the non-ferrous metals such as copper, nickel is to make sulfonium process, main chemical reaction is oxidation reaction.Therefore stock column height is generally all less than 2.8 meters.But can cause like this coke consumption many, production cost is high, heat utilization efficiency is less than 75%, can not adapt to the requirement of national energy-saving consumption reduction, as the pyrometallurgical smelting equipment of the non-ferrous metals such as copper, lead---traditional closed blast furnace has been put into national < < industry restructuring guidance list (basis in 2011) > > technical equipment out of category.
At present, non-ferrous metal metallurgy mainly adopts the advanced technology resources such as oxygen lowly blows, Flash Smelting Furnace, Ai Salu, Ausmelt furnace, but these advanced technology resources have higher requirement to the moisture of raw material, chemical composition, granularity etc., are more suitable for refining non-ferrous metal from concentrate; And industrial solid wastes and old metal raw material have that moisture just differs, a complicated component, the not first-class feature of shape, the advantage of closed blast furnace is the strong adaptability to raw material, and closed blast furnace also has the advantages such as small investment.Therefore, the non-ferrous metal such as Recovering Copper, nickel from industrial solid wastes and old metal, still has a lot of medium-sized and small enterprises to adopt closed blast furnaces now.
Because plumbous blast furnace smelting is less demanding to flue-gas temperature, raw material is that agglomerate is not that powder, main chemical reaction are the reasons such as reduction reaction, the existing plumbous closed blast furnace stock column height of smelting is generally all greater than 3.8 meters, but the angle of air port and horizontal plane is 0～6 degree, be provided with cupola well, the melt that melting produces flows out from cinder notch and throat mouth respectively.Therefore this blast furnace is not suitable for copper, nickel is smelted.
The non-ferrous metal closed blast furnace shafts such as current copper, nickel, lead, antimony all adopt the water jacket of steel construction, water jacket all adopts water cooling mode cooling, jacket water, from eminence flow to lower, then is realized circulation with pumping for water pump to circulating water pool, and water pump need consume electric energy.
Utility model content
The purpose of this utility model be to overcome the deficiencies in the prior art and provide a kind of simple in structure, heat utilization efficiency is high, the energy-conservation closed blast furnace that reduces energy consumption and production costs.
To achieve these goals, the technical scheme that the utility model adopts is:
A kind of energy-conservation closed blast furnace, comprise furnace roof, shaft, internal crucible, air port and throat mouth, described furnace roof is provided with feeding device and fume emission mouth, and the air intake in described air port is connected with air blast, the height H of described shaft stock column is not less than 3.8m, and the total head of described air blast is not less than 14.7 kPa.
The angle b of described air port and horizontal plane is 6～12 degree, and the melt that in described internal crucible, melting produces directly flows out from throat mouth.
Described shaft is comprised of water jacket, water jacket is provided with jacket water EGR outward, described jacket water EGR comprises the delivery port that is arranged in the water inlet of water jacket, bottom and is positioned at water jacket top, described water inlet is connected with pond by pipeline, described delivery port is connected with little water tank by pipeline, the water level of described little water tank is higher than the water level in described pond, and the delivery port of described little water tank is connected with pond by pipeline.
Owing to adopting such scheme, this device tool has the following advantages:
1, after the stock column of shaft increases, the preheating zone of closed blast furnace is increased, increase the preheating time of furnace charge, and blast furnace exit gas temperature is lower than 350 ℃, and the heat that flue gas is taken away reduces, and has therefore improved heat utilization efficiency, and heat utilization efficiency can reach more than 85%;
2, jacket water EGR of the present utility model, on original cooling water circulating device, increase a little water tank higher than cooling pond water level, utilize the water in water jacket to be heated rear generation steam pressure difference, jacket water by automatic pressing in little water tank, then from little water tank, flow to pond, realize the circulation of cooling water, make the circulation of cooling water not need distribution pump, do not consume electric energy.
In sum, although closed blast furnace has been eliminated in non-ferrous metal fields such as refining copper, nickel from concentrate, but remarkable by the closed blast furnace effect in the nonferrous metal resources such as Recovering Copper, nickel from industrial solid wastes and old metal after improving, have advantages of that, small investment strong to adaptability to raw material, heat utilization efficiency are high, reduce energy consumption and production costs, can play a role in comprehensive utilization of resources field.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
The specific embodiment
Below in conjunction with accompanying drawing, further describe the specific embodiment of this patent.
With reference to Fig. 1, a kind of energy-conservation closed blast furnace, comprise furnace roof 1, shaft 2, internal crucible 3, air port 4 and throat mouth 5, described furnace roof 1 is provided with feeding device and fume emission mouth, the air intake in described air port 4 is connected with air blast, the height H of described shaft 2 stock columns is not less than 3.8m, the total head of described air blast is not less than 14.7 kPa, described air port 4 is greater than 6 degree with the angle of horizontal plane, the melt that the interior melting of described internal crucible 3 produces directly flows out from throat mouth 5, there is internal crucible 3 there is no cupola well, described shaft 2 is comprised of water jacket, water jacket is provided with jacket water EGR outward, described jacket water EGR comprises and is arranged in water jacket 6, the water inlet of bottom and the delivery port that is positioned at water jacket 6 tops, described water inlet is connected with pond 8 by pipeline, described delivery port is connected with little water tank 7 by pipeline, the water level of described little water tank 7 is higher than the water level in described pond 8, and the delivery port of described little water tank 7 is connected with pond 8 by pipeline.
Claims (3)
1. an energy-conservation closed blast furnace, comprise furnace roof, shaft, internal crucible, air port and throat mouth, described furnace roof is provided with feeding device and fume emission mouth, the air intake in described air port is connected with air blast, it is characterized in that, the height H of described shaft stock column is not less than 3.8m, and the total head of described air blast is not less than 14.7kPa.
2. energy-conservation closed blast furnace according to claim 1, is characterized in that, the angle b of described air port and horizontal plane is 6～12 degree, and the melt that in described internal crucible, melting produces directly flows out from throat mouth.
3. energy-conservation closed blast furnace according to claim 1 and 2, it is characterized in that, described shaft is comprised of water jacket, water jacket is provided with jacket water EGR outward, described jacket water EGR comprises the delivery port that is arranged in the water inlet of water jacket, bottom and is positioned at water jacket top, described water inlet is connected with pond by pipeline, described delivery port is connected with little water tank by pipeline, the water level of described little water tank is higher than the water level in described pond, and the delivery port of described little water tank is connected with pond by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320492832.0U CN203464677U (en) | 2013-08-13 | 2013-08-13 | Energy-saving sealed blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320492832.0U CN203464677U (en) | 2013-08-13 | 2013-08-13 | Energy-saving sealed blast furnace |
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| CN203464677U true CN203464677U (en) | 2014-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320492832.0U Expired - Fee Related CN203464677U (en) | 2013-08-13 | 2013-08-13 | Energy-saving sealed blast furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329935A (en) * | 2014-10-28 | 2015-02-04 | 永兴县荣鹏金属有限公司 | Improved novel blast furnace |
| CN109609774A (en) * | 2018-12-29 | 2019-04-12 | 耒阳市焱鑫有色金属有限公司 | A kind of high antimony secondary smoke dearsenification temperature control blast furnace having multilayer air port and high coke column |
-
2013
- 2013-08-13 CN CN201320492832.0U patent/CN203464677U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329935A (en) * | 2014-10-28 | 2015-02-04 | 永兴县荣鹏金属有限公司 | Improved novel blast furnace |
| CN104329935B (en) * | 2014-10-28 | 2015-11-11 | 永兴县荣鹏金属有限公司 | A kind of modified blast furnace |
| CN109609774A (en) * | 2018-12-29 | 2019-04-12 | 耒阳市焱鑫有色金属有限公司 | A kind of high antimony secondary smoke dearsenification temperature control blast furnace having multilayer air port and high coke column |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20210813 |
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| CF01 | Termination of patent right due to non-payment of annual fee |