CN205332796U - Vertical pair of side -blown smelting furnace - Google Patents
Vertical pair of side -blown smelting furnace Download PDFInfo
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- CN205332796U CN205332796U CN201521114778.1U CN201521114778U CN205332796U CN 205332796 U CN205332796 U CN 205332796U CN 201521114778 U CN201521114778 U CN 201521114778U CN 205332796 U CN205332796 U CN 205332796U
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The utility model discloses a vertical pair of side -blown smelting furnace, it is including smelting reaction zone and electric stove district, it includes upper segment, middle section and hypomere to smelt the reaction zone, the resistant firebrick of step in the box hat of upper segment, the side wall of nai firebrick are equipped with secondary air nozzle, the wall top surface of upper segment is equipped with the bell, leaves a plurality of charge cavity on the bell, and the exhanst gas outlet is left at furnace roof tip or middle part, the middle section wall is whole to adopt the copper water jacket, and this middle section lateral wall cooling jacket is the multilayer, the hypomere adopts resistant firebrick to build by laying bricks or stones, the water jacketed lower of lower floor in middle section is equipped with air supply passage one time to this air supply passage downward sloping. The utility model discloses a plane and the downward sloping setting on near the copper matte regulus of the oxygen blast position of smelting furnace for slag blanket thickness can be by control about 600mm~800mm. The smelting slag dwell time in the stove who generates among the smelting process is shorter than deep molten bath method a lot, and the slag blanket is in by the stirring state always, smelts the difficult diaphragm that forms in the reaction zone.
Description
Technical field
This utility model belongs to pyrometallurgical smelting scope, particularly relates to vertical pair of side-blown smelting furnace of a kind of shallow pool operation。
Background technology
At present in the factory making raw material production copper with copper concentrate, thermal process occupies the overwhelming majority。Along with the development of pyrogenic process extraction process, traditional blast furnace, reverberatory furnace, ore-smelting electric furnace oneself be eliminated, the stove of various intensified smeltings arises at the historic moment, and gradual perfection and development。Bath smelting has the Mitsubishi process stove of top blast, Isa furnace and Ao Si matt stove；Bottom blowing have QLS stove, SKS stove；Horizontal side-blown have noranda furnace, silver stove；What vertical bilateral blew has Wa Niukefu stove and the metallurgical furnace of patent No. ZL200820135242.1 utility model patent。
Wa Niukefu stove and the metallurgical furnace that the patent No. is ZL200820135242.1 belong to deep molten bath melting: liquid state molten pool degree of depth 2300mm～2500mm during operation, wherein copper matte regulus degree of depth 500mm～900mm, slag blanket degree of depth 1500mm～1800mm。The smelting furnace output copper matte regulus cupric of such deep molten bath operation should control below 60%, output smelting slag Fe/SiO2Easy to control 1.0～1.7。
During for postorder blowing procedure calls copper matte regulus cupric 70%～80%, the smelting furnace of deep molten bath operation is then not suitable with。Its reason is when the copper matte regulus cupric of output is when 70%～80%, the smelting slag Fe/SiO of smelting furnace output2Ratio is up to 1.8～2.5。Fe in this state slag3O4It is typically in 12%～18%, sometimes even reaches more than 20%。When adopting deep molten bath melting, the slag blanket below air outlet has relatively placidity section, Fe in slag3O4Very easily forming the diaphragm (viscous layer) of thickness 200mm～500mm during content height, it is clipped between copper matte regulus layer and slag blanket, has a strong impact on the direct motion of smelting furnace。
Utility model content
The purpose of this utility model is aiming at the deficiency that above-mentioned prior art exists, it is provided that propose vertical pair of side-blown smelting furnace of a kind of shallow pool operation, it is possible to continuously produce the copper matte regulus of cupric 70%～80%, smoothly releases Fe/SiO simultaneously2Than the smelting slag reaching 1.8～2.5。
The purpose of this utility model is achieved through the following technical solutions。
A kind of vertical pair of side-blown smelting furnace, it includes melting reaction district and electric furnace district；Described melting reaction district includes epimere, stage casing and hypomere；Building refractory brick in the box hat of described epimere, refractory brick side wall is provided with overfiren air port, and four wall end faces of described epimere are provided with bell, and bell leaves several charging apertures, and exhanst gas outlet is left at furnace roof end or middle part；Described stage casing four wall all adopts Copper Water Jacket, and this stage casing sidewall cooling jacket is multilamellar；Described hypomere adopts laying fireproof bricks；It is characterized in that, be provided with a vent passages in the lowest point of the orlop water jacket in described stage casing, and this air-supply passage is downward-sloping。
According to above-mentioned smelting furnace, it is characterised in that the angle of a described air-supply passage and horizontal plane is more than 0 ° and less than or equal to 20 °。
According to above-mentioned smelting furnace, it is characterised in that described secondary blast passage is downward-sloping, and with the angle of horizontal plane more than 0 ° less than or equal to 15 °。
According to above-mentioned smelting furnace, it is characterised in that the flue of described exhanst gas outlet docking inner lining refractory, the angle of this flue and horizontal plane is 65 °～90 °。
According to above-mentioned smelting furnace, it is characterised in that the slag tap of described smelting furnace is positioned at one end, melting reaction district, and the slag tap of described smelting furnace is arranged on electric furnace district。
The oxygen blast position of smelting furnace of the present utility model is plane and downward-sloping setting on copper matte regulus so that thickness of slag layer can be controlled in about 600mm～800mm。The smelting slag generated in fusion process residing time in furnace than deep molten bath method short a lot, and slag blanket is constantly in the state of being stirred, and is not easily formed diaphragm in melting reaction district。
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model。
Fig. 2 is the side view of Fig. 1。
Fig. 3 is the top view of Fig. 1。
Detailed description of the invention
Referring to Fig. 1-Fig. 3, smelting furnace of the present utility model includes stove basis 1, body of heater outer steel structure 2, refractory material furnace bottom 3, smelting furnace reaction zone hypomere furnace wall lays bricks 4, top, smelting zone side wall, headwall builds refractory material 5, stage casing, melting reaction district headwall Copper Water Jacket 6, stage casing, melting reaction district side wall Copper Water Jacket 7, melting reaction district side wall air vent Copper Water Jacket 8, it is positioned at the furnace top cover 9 above melting reaction district, it is located at the charging aperture 10 on furnace top cover, the pushing off the slag screen water jacket 11 at top, melting reaction district, it is positioned at the outlet flue 12 in furnace roof portion of melting reaction district, inner lining refractory flue 13, secondary blast passage 14, copper matte regulus siphon discharge port 15, slag tap 16, safe mouth 17, observation panel 18, electric furnace district top cover 19, electrode 20, ullage port 21, electric furnace district furnace wall 22。Can be seen that from Fig. 1-3 vertical pair of side-blown smelting furnace integral level cross section of this shallow pool operation is rectangle, stove divides Two Areas along its length: melting reaction district and electric furnace district, two parts form a whole。Melting reaction distinguishes upper, middle and lower segment。
In melting reaction district epimere four wall box hat, refractory material 5, refractory brick both walls are respectively equipped with multiple overfiren air port 14。One headwall is provided with observation panel 18。Epimere four wall top plane is provided with an exhanst gas outlet 12, exhanst gas outlet docks adiabatic flue 13, remaining is obturaged with some pieces of furnace top covers 9。Furnace top cover 9 leaves several charge doors 10。Furnace roof exhanst gas outlet has two kinds of allocation plans；One is that exhanst gas outlet is located at rectangle one end, and remainder furnace top cover 9 is obturaged, and several charge doors are arranged in the side (namely schematic diagram allotted in literary composition is this kind of scheme) of exhanst gas outlet；Two is that exhanst gas outlet 12 is arranged in the middle part of furnace roof, and exhanst gas outlet both sides furnace top cover 9 is obturaged, and several charge doors 10 set up separately on the furnace top cover 9 of exhanst gas outlet both sides。Alternative plan is applicable to the stove that milling capacity is big, is conducive to reducing flue gas operating mode flow velocity in burner hearth, reduces the fume amount that flue gas is taken away。
Furnace top cover and exhanst gas outlet intersection arrange Copper Water Jacket pushing off the slag screen 11。Secondary blast passage is downward-sloping, and horizontal sextant angle 0 °～15 ° (namely more than 0 ° less than or equal to 15 °), external threeway, branch wind pipe, blast main, forms complete air feed system。
Stage casing four, melting reaction district wall adopts Copper Water Jacket to surround, end walls Copper Water Jacket 6 is symmetrical, polylith superposition is uprightly installed。Two side Copper Water Jacket 7, longitudinal block number and the upper and lower number of plies and mounting means are all symmetrical。Copper Water Jacket can have two layered schemes and three layered schemes up and down, and lower floor is provided with the Copper Water Jacket of an air-supply passage and is upright installation。When adopting two-layer Copper Water Jacket, upper strata tilts to install；When adopting three layers Copper Water Jacket, upper copper water jacket tilts to install, and intermediate layer water jacket can uprightly be installed, it is possible to tilt to install。The straight water jacket of monolithic and straight water jacket, oblique water jacket and tiltedly water jacket, straight water jacket and tiltedly between water jacket by stove outside steel construction be fixed into an entirety。In order to Copper Water Jacket and refractory material body of wall are tightly combined firmly, cupola well side wall refractory material has tiled one layer of Copper Water Jacket, and the seat that the vertical water jacket of a vertically installed vent is fixed is on par overlaps。
Air-supply passage is downward-sloping and angle 0 °～20 ° (more than 0 ° less than or equal to 20 °) with horizontal plane。External threeway, branch wind pipe, blast main, form complete stove oxygen system。Such oxygen blast position plane on copper matte regulus, thickness of slag layer controls at about 600mm～800mm。The smelting slag generated in fusion process residing time in furnace than deep molten bath method short a lot, and slag blanket is constantly in the state of being stirred, and is not easily formed diaphragm in melting reaction district。Diaphragm is produced in order to prevent smelting slag from entering electric furnace district, the melting reaction district First air air vent against electric furnace position does particular design, can insert natural gas tube when necessary, become natural gas combustion nozzle, control as reducing condition, the Fe contained by making in the smelting slag of entrance grit chamber3O4Not easily precipitate out。After smelting slag enters electric furnace district, adopt electrode heat supply, simultaneously because slag blanket is relatively thin, therefore can eliminate due to Fe3O4The harm that fusion process is caused by the diaphragm that content height is formed, makes fusion process direct motion。
Both sides Copper Water Jacket and two ends Copper Water Jacket are contour, and upper strata, both sides tilts one layer of Copper Water Jacket of plane tiling on Copper Water Jacket and two ends Copper Water Jacket, and namely the epimere brick body in melting reaction district builds on this tiling Copper Water Jacket。Melting reaction district hypomere claims cupola well, and its both walls completely encloses, and one end communicates with electric furnace district, and the other end arranges copper matte regulus siphon discharge port 15 and passage near furnace bottom。The side wall in the side wall in melting reaction district, copper matte regulus siphon discharge port 15 and passage and electric furnace district and headwall common seat are on elongated furnace bottom, and being placed in outside steel makes one without in the cuboid square chest of upper wall together together with furnace bottom。The composite arch that melting reaction district cupola well and electric furnace district are made up of water jacket and refractory material separates。Whole furnace bottom 3 is built into by refractory material, through electric furnace district and melting reaction district, and furnace bottom cross section is antiarch shape。Length direction keeps the gradient of 1%, tilts toward copper matte regulus discharge port。Forming the passage of closely several square metres between antiarch and composite arch and cupola well both walls, slag is hence into electric furnace district, settlement separate further。The copper matte regulus precipitated is back to smelting zone, releases from copper matte regulus discharge port。
Electric furnace district: front already described and furnace bottom is antiarch shape, is respectively equipped with slag tap 16, safe mouth 17 on the headwall and side wall in electric furnace district。Entirely use refractory material laying for three。It is the passage connected with reaction zone under the headwall of melting reaction district end water jacket encircles, arch builds refractory material by laying bricks or stones against water jacket。Furnace roof seals with the water jacket furnace top cover 19 being lined with refractory material, and top water jacket leaves electrode hole and ullage port 21。Graphite electrode 20 inserts in molten bath from electrode hole。Electrode 20 is connected with power supply by holder, short net。Electric furnace region electrode power supply mode adopts alternating current or direct current。
This smelting furnace divides upper and lower two-layer air port, and during duty in embedment molten bath, lower floor air port, air-supply oxygen concentration 70%～90% is used for the chemical reaction into stove material。Air or oxygen-enriched air are sent in air port, upper strata, for the free sulfur burning that material decomposites, and make flue dust form salinization state, to alleviate the bonding of furnace rear flue and boiler。Lower floor vent blast pressure 0.12MPa～0.2MPa；Air port, upper strata blast pressure 0.035～0.05Mpa。Give full play to the energy that copper concentrate itself is contained, when energy deficiency in ore deposit, only supplement a small amount of coal natural gas。When production processes sulphide ore, a small amount of raw coal, coke powder or natural gas can be supplemented as required to ensure the balance of fusion process heat。Produce bed ability up to 55～100 tons/m2.d, the S0 of kiln gas is gone out2Concentration 25%～35%, day operating rate more than 98.5%。High concentration oxygen enrichment sends into slag blanket, operates temperature about 1250 DEG C, and high temperature position relies on water jacket dross, and furnace li` was up to more than 10 years。During discard slag with copper 70%～80%, Fe in slag304Content 13%～18%, Copper in Slag 2.5%～3%。This stove direct recovery rate more than 92%。
Claims (5)
1. a vertical pair of side-blown smelting furnace, it includes melting reaction district and electric furnace district；Described melting reaction district includes epimere, stage casing and hypomere；Building refractory brick in the box hat of described epimere, refractory brick side wall is provided with overfiren air port, and four wall end faces of described epimere are provided with bell, and bell leaves several charging apertures, and exhanst gas outlet is left at furnace roof end or middle part；Described stage casing four wall all adopts Copper Water Jacket, and this stage casing sidewall cooling jacket is multilamellar；Described hypomere adopts laying fireproof bricks；It is characterized in that, be provided with an air-supply passage in the lowest point of the orlop water jacket in described stage casing, and this air-supply passage is downward-sloping。
2. smelting furnace according to claim 1, it is characterised in that the angle of a described air-supply passage and horizontal plane is more than 0 ° and less than or equal to 20 °。
3. smelting furnace according to claim 1, it is characterised in that described secondary blast passage is downward-sloping, and with the angle of horizontal plane more than 0 ° less than or equal to 15 °。
4. smelting furnace according to claim 1, it is characterised in that the flue of described exhanst gas outlet docking inner lining refractory, the angle of this flue and horizontal plane is 65 °～90 °。
5. smelting furnace according to claim 1, it is characterised in that the slag tap of described smelting furnace is positioned at one end, melting reaction district, and the slag tap of described smelting furnace is arranged on electric furnace district。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521114778.1U CN205332796U (en) | 2015-12-30 | 2015-12-30 | Vertical pair of side -blown smelting furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521114778.1U CN205332796U (en) | 2015-12-30 | 2015-12-30 | Vertical pair of side -blown smelting furnace |
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| CN205332796U true CN205332796U (en) | 2016-06-22 |
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| CN201521114778.1U Active CN205332796U (en) | 2015-12-30 | 2015-12-30 | Vertical pair of side -blown smelting furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423752A (en) * | 2015-12-30 | 2016-03-23 | 黄艳玲 | Vertical double-side-blowing smelting furnace |
| CN110317916A (en) * | 2018-03-29 | 2019-10-11 | 中国瑞林工程技术有限公司 | Tailings reduction furnace |
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2015
- 2015-12-30 CN CN201521114778.1U patent/CN205332796U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423752A (en) * | 2015-12-30 | 2016-03-23 | 黄艳玲 | Vertical double-side-blowing smelting furnace |
| CN110317916A (en) * | 2018-03-29 | 2019-10-11 | 中国瑞林工程技术有限公司 | Tailings reduction furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180830 Address after: 100067 Fengtai District, Beijing, South Fourth Ring Road West 188 headquarters base 18 District 23 building 1304 room. Patentee after: Beijing Huasheng Jinfeng Technology Development Co., Ltd. Address before: 214028 Taihu garden, Wuxi, Jiangsu, phase one 55-102 Co-patentee before: Wang Ping Patentee before: Huang Yanling Co-patentee before: Huang Xiansheng |
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| TR01 | Transfer of patent right |