CN106369992A - Smelting furnace for synchronously smelting reduced pig iron and ore-rock wool - Google Patents
Smelting furnace for synchronously smelting reduced pig iron and ore-rock wool Download PDFInfo
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- CN106369992A CN106369992A CN201610868371.0A CN201610868371A CN106369992A CN 106369992 A CN106369992 A CN 106369992A CN 201610868371 A CN201610868371 A CN 201610868371A CN 106369992 A CN106369992 A CN 106369992A
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- smelting furnace
- smelting
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- furnace shell
- ore
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- 238000003723 Smelting Methods 0.000 title claims abstract description 123
- 229910000805 Pig iron Inorganic materials 0.000 title claims abstract description 30
- 239000011490 mineral wool Substances 0.000 title abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 64
- 229910052742 iron Inorganic materials 0.000 claims abstract description 30
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 27
- 239000001301 oxygen Substances 0.000 claims abstract description 27
- 239000002893 slag Substances 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 238000007599 discharging Methods 0.000 claims abstract description 15
- 239000011449 brick Substances 0.000 claims abstract description 11
- 239000011435 rock Substances 0.000 claims description 32
- 229920000742 Cotton Polymers 0.000 claims description 31
- 230000001360 synchronised effect Effects 0.000 claims description 25
- 230000009467 reduction Effects 0.000 claims description 24
- 239000002817 coal dust Substances 0.000 claims description 22
- 239000007789 gas Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- 239000000498 cooling water Substances 0.000 claims description 7
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000003063 flame retardant Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 13
- 239000003245 coal Substances 0.000 abstract description 7
- 239000000779 smoke Substances 0.000 abstract description 2
- 230000009977 dual effect Effects 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 description 17
- 238000002844 melting Methods 0.000 description 11
- 230000008018 melting Effects 0.000 description 11
- 239000000446 fuel Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 238000007499 fusion processing Methods 0.000 description 4
- 239000002440 industrial waste Substances 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 206010012735 Diarrhoea Diseases 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001914 calming effect Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910052635 ferrosilite Inorganic materials 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/06—Shaft or like vertical or substantially vertical furnaces of other than up-draught type
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
- F27B1/12—Shells or casings; Supports therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
- F27B1/21—Arrangements of devices for discharging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
- F27B1/24—Cooling arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/13—Smelting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The invention discloses a smelting furnace for synchronously smelting reduced pig iron and ore-rock wool. The smelting furnace comprises a smelting furnace foundation. A furnace bottom plate and a smelting furnace shell body are fixedly mounted on the smelting furnace foundation, and a smelting pool is formed between the lower portion of the smelting furnace shell body and the furnace bottom plate. Furnace wall fire-resisting layers are arranged on the inner side wall of the smelting furnace shell body. Furnace bottom fire-resisting brick layers are arranged on the furnace bottom plate in a masonry manner. A raw material feeding opening is formed in the top of the smelting furnace shell body. A smoke outlet is formed in the upper portion of the side wall of the smelting furnace shell body. An iron discharge flow opening is formed in the lower portion of the side wall of the smelting furnace shell body and communicates with the bottom of the smelting pool. The side wall of the middle of the smelting furnace shell body is provided with a water-cooling type furnace door and a slag dual discharging flow opening, and the slag dual discharging flow opening communicates with the upper portion of the smelting pool. A pulverized coal combustion-supporting oxygen lance is further arranged on the side wall of the smelting furnace shell body and communicates with the smelting pool. Air supporting pipes are arranged on the pulverized coal combustion-supporting oxygen lance. The smelting furnace achieves the aim of synchronously producing two products, and the two products of the reduced pig iron and the ore-rock wool can be synchronously produced in one piece of smelting furnace equipment.
Description
Technical field
The invention belongs to the production equipment technical field of the smelting reduction pig iron and ore-rock cotton is and in particular to a kind of synchronous melting
Reduction of pig iron and the smelting furnace of ore-rock cotton.
Background technology
At present, known domestic and international conversion pig adopts blast-furnace equipment ironmaking technology mostly, and the supply of conversion pig is basic
Come from blast furnace ironmaking equipment, due to blast furnace ironmaking enforcement is scale benefit, and production cost is high, and the market competitiveness is fierce,
Greenhouse gas emission and problem of environmental pollution ratio are more serious, and steel industry is hovered at the edge of slight diarrhea and loss, need appearance badly new
Technology is driven the industry upgrading, eliminates the backward production facilities, promotes industry healthy and sustainable development, in recent years, develops successively and develop
Some non-blast furnace ironmaking DRI equipment, but these new reducing and smelting furnace systems are in development or industry at present substantially
Change the experimental stage, in device structure, performance, principle, effect, material, Technology still need further improvement, perfect, master
Exist: technological process is complicated, investment is big, production cost height, low production efficiency, the low problem of economic benefit.
And domestic and international ore deposit rock wool production widely used cupola equipment melting technique at present, although ore deposit rock wool cupola
Equipment has had the production history of more than 100 year, in view of it is a kind of vertical furnace, is primarily present raw material, suitability of fuel
Difference, environmental pollution is serious, and waste heat, residual air comprehensive utilization are low, the problems such as comprehensive production cost is high.In addition to cupola equipment, also go out
Showed the equipment that electric furnace produces ore-rock cotton, but production cost is higher cannot existence in the market.
Content of the invention
The invention aims to solving existing blast furnace ironmaking equipment, ore deposit rock wool cupola, depositing in furnace equipment melting
Technical problem, provide a kind of synchronous smelting reduction pig iron that can realize the synchronous production pig iron and two kinds of products of ore-rock cotton and
The smelting furnace of ore-rock cotton.
In order to achieve the above object, the present invention employs the following technical solutions: a kind of synchronous smelting reduction pig iron and ore-rock cotton
Smelting furnace, including smelting furnace basis, be installed with drop-bottom and smelting furnace shell body, described smelting furnace shell on the basis of described smelting furnace
The internal package of body has cast type body of heater cooling jacket, is formed between the bottom of described cast type body of heater cooling jacket and drop-bottom
Molten bath, the side wall in described molten bath and bottom have all built furnace bottom fire brick layer, the medial wall of described cast type body of heater cooling jacket by laying bricks or stones
Top and top are provided with furnace wall flame retardant coating, and the top of described smelting furnace shell body is provided with material inlet, described smelting furnace shell body
Side wall upper part is provided with exhanst gas outlet, and the lower sidewall of described smelting furnace shell body is provided with the bottom put flowing molten iron mouth and put flowing molten iron mouth and molten bath
Portion is connected, and the middle part of sliding channel of described smelting furnace shell body is provided with water-cooled furnace door and the double discharging head piece of slag and the double discharging of slag
Head piece is connected with the top in molten bath, and the side wall of described smelting furnace shell body is additionally provided with the combustion-supporting oxygen rifle of coal dust and the combustion-supporting oxygen rifle of coal dust
It is connected with molten bath, the combustion-supporting oxygen rifle of described coal dust is provided with wind arm.
Further, described smelting furnace shell body is linked into an integrated entity with cast type body of heater cooling jacket by bolt.
Further, the top of described smelting furnace shell body is provided with spy burner.
Further, described drop-bottom is equipped with cooling water drainage pipe, described cooling water comb upper berth is provided with heat-conducting layer, institute
State the lower section that heat-conducting layer is located at furnace bottom fire brick layer.
Further, described wind arm includes First air arm and secondary wind arm and First air arm and secondary wind arm
All it is welded in the combustion-supporting oxygen rifle of coal dust.
Further, described smelting furnace shell body is Horizontal rectangular structure, and top is semicircular arch shape, bottom is cuboid
Shape.
Further, described water-cooled furnace door is welded on smelting furnace shell body cuboid minor face face, described exhanst gas outlet weldering
It is connected on the smelting furnace shell body cuboid minor face face relative with water-cooled furnace door.
Further, described flowing molten iron mouth of putting is put flowing molten iron mouth for controllable type and is welded on smelting furnace shell body cuboid minor face face
On, the double discharging head piece of described slag is controllable type and is welded on the smelting furnace shell body cuboid minor face face relative with putting flowing molten iron mouth.
Further, the combustion-supporting oxygen rifle of described coal dust is multiple and uniform welding in smelting furnace shell body cuboid long side two sides
On.
Further, on the basis of described drop-bottom and smelting furnace shell body are welded on smelting furnace.
The operation principle of the present invention is with iron-bearing mineral or iron-contained industrial waste residue as raw material, with coal dust, blast furnace gas for combustion
The material synchronous production pig iron and two kinds of products of rock mineral wool, specifically first with iron-bearing mineral or iron-contained industrial waste residue as raw material, through former
Material charging aperture from smelting furnace shell body top or enters in the molten bath of smelting furnace shell body by the combustion-supporting oxygen rifle of two groups of coal dusts, coal dust conduct
Fuel and reducing agent are sprayed among the melt of below bath surface by the combustion-supporting oxygen rifle of two groups of coal dusts under gases at high pressure effect, make
Melt is in fluidized state all the time, under the fierce fluidized state in molten bath, accelerates fusing and the homogenizing of raw material, oxygen passes through two
The group combustion-supporting oxygen rifle of coal dust from smelting furnace outer housing side spray into molten bath liquation internal it is ensured that the abundant burning of fuel and raw material anti-
Answer temperature, under high-temperature fusion and carbon reaction has obtained reduced iron, especially to ferrosilite, oxidation to the iron-bearing material melt in molten bath
The iron containing compoundses reduction efficiency such as ferrous iron is high, and reduction process is extremely rapid, the slag in molten bath and as-reduced metallic iron
Because density is different, upper strata melt passes through the double discharging head piece of slag and becomes fine operation to ore-rock cotton, and the metal fusant of lower floor passes through to put
Flowing molten iron mouth, that is, can be with synchronous production reduction of pig iron and two kinds of products of ore-rock cotton in melting furnace apparatus to pig iron molding procedure
Product.
Hinge structure of the present invention has the advantages that
1st, the synchronous smelting reduction pig iron of the present invention and the smelting furnace of ore-rock cotton mainly include drop-bottom, smelting furnace shell body, raw material
Charging aperture, exhanst gas outlet, put flowing molten iron mouth, water-cooled furnace door, the double discharging head piece of slag, the combustion-supporting oxygen rifle of coal dust and wind arm, molten
During refining, do not use coke completely, directly with coal dust as fuel, raw material directly adopts local iron-bearing mineral or iron-contained industrial
Waste residue, produced smoke content is very low, through actually detected, the dustiness of flue gas about 146-191 milligram/cubic meter, only
Initiate the 5-20% of dustiness for ore deposit rock wool cupola flue gas, in fusion process, the thermal efficiency is higher.The present invention is in melting simultaneously
Using submerged combustion boiling melting mode under liquid, burning is to carry out inside melt, makes melt directly obtain heat, produces simultaneously
Violent agitation, be fusion process gas, liquid, solid three-phase between reaction create good dynamic conditions, make heating, molten
The physical and chemical processes such as change, homogenizing are able to acceleration, high immediately after the huge granular raw material entrance melt of specific surface area
Warm melt is surrounded, and melts rapidly with the strong agitation of melt, boiling, and then is distributed in rapidly among melt, smelting heat
Efficiency is greatly improved, and through actually detected, overall efficiency is up to more than 90%；In addition, invention achieves " synchronous two products "
Purpose, that is, in melting furnace apparatus can with synchronous production reduction of pig iron and two kinds of products of ore-rock cotton, breach ironmaking row
Industry commonly uses blast furnace ironmaking and ore-rock cotton manufacturing commonly uses furnace cupola and can only produce the traditional handicraft of single product
Equipment, changes to subversiveness complicated procedures of forming and the high cost problem of traditional iron industry, and energy-saving effect is notable.
2nd, the smelting furnace fusion process high temperature flue gas of the synchronous smelting reduction pig iron of the present invention and ore-rock cotton is through heat exchange profit
Use other operations, in ironmaking and ore-rock cotton manufacturing, there is low cost, low emission, low energy consumption, eco-friendly effect.
3rd, the synchronous smelting reduction pig iron of the present invention and the smelting furnace of ore-rock cotton are good to the adaptability of raw material and fuel, raw material
Without pulverizing, sintering, agglomeration, fuel is without particular/special requirements such as coke.
4th, the synchronous smelting reduction pig iron of the present invention and the melting furnace apparatus of ore-rock cotton have that structure is simple, efficiency high, life
The little advantage of product low cost, equipment investment.
Brief description
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the a-a direction view in Fig. 1；
Fig. 3 is the top view of Fig. 1.
Reference implication of the present invention is as follows: 1, smelting furnace basis；2nd, drop-bottom；3rd, furnace bottom fire brick layer；4th, put flowing molten iron mouth；
5th, cast type body of heater cooling jacket；6th, the combustion-supporting oxygen rifle of coal dust；7th, water-cooled furnace door；8th, smelting furnace shell body；9th, furnace wall flame retardant coating；
10th, the double discharging head piece of slag；11st, material inlet；12nd, visit burner；13rd, exhanst gas outlet；14th, molten bath；15th, First air arm；
16th, secondary wind arm；17th, cooling water comb；18th, heat-conducting layer.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and detailed description.
As Figure 1-3, the smelting furnace of a kind of synchronous smelting reduction pig iron and ore-rock cotton, including smelting furnace basis 1, smelting furnace base
Drop-bottom 2 and smelting furnace shell body 8 are welded with plinth 1, the internal package of smelting furnace shell body 8 has cast type body of heater cooling jacket 5, casting
Make formation molten bath 14 between the bottom of formula body of heater cooling jacket 5 and drop-bottom 2, the side wall in molten bath 14 and bottom have all built furnace bottom by laying bricks or stones
Fire brick layer 3, the inner sidewall upper portion of cast type body of heater cooling jacket 5 and top are provided with furnace wall flame retardant coating 9, and drop-bottom 2 is laid
There is cooling water comb 17, cooling water comb 17 is equipped with heat-conducting layer 18, heat-conducting layer 18 is located at the lower section of furnace bottom fire brick layer 3.
Smelting furnace shell body 8 is Horizontal rectangular structure, and top is semicircular arch shape, bottom is rectangular-shaped, the outside bag of smelting furnace shell body 8
It is wrapped with cast type body of heater cooling jacket 5 and by bolt, cast type body of heater cooling jacket 5 and smelting furnace shell body 8 are connected into one
Body, the welded top of smelting furnace shell body 8 has material inlet 11 and visits burner 12, and the side wall upper part of smelting furnace shell body 8 is provided with cigarette
Gas outlet 13, exhanst gas outlet 13 is welded on smelting furnace shell body 8 cuboid minor face face, and fusion process high temperature flue gas is through heat exchange profit
Use other operations.The lower sidewall of smelting furnace shell body 8 is provided with to put flowing molten iron mouth 4 and put flowing molten iron mouth 4 and is connected with the bottom in molten bath 14
Logical, put flowing molten iron mouth 4 and put flowing molten iron mouth for controllable type and be welded on smelting furnace shell body 8 cuboid minor face face, in smelting furnace shell body 8
Portion side wall is provided with water-cooled furnace door 7 discharging head piece 10 double with slag and the double discharging head piece 10 of slag is connected with the top in molten bath 14
Logical, the double discharging head piece 10 of slag is controllable type and is welded on the smelting furnace shell body 8 cuboid minor face face relative with putting flowing molten iron mouth 4,
Water-cooled furnace door 7 is welded on the smelting furnace shell body 8 cuboid minor face face relative with exhanst gas outlet 13, the side wall of smelting furnace shell body 8
On be additionally provided with the combustion-supporting oxygen rifle of coal dust 6 and the combustion-supporting oxygen rifle of coal dust 6 is connected with molten bath 14, the combustion-supporting oxygen rifle of coal dust 6 is provided with wind arm,
Wind arm includes First air arm 15 and secondary wind arm 16 and First air arm 15 and secondary wind arm 16 are all welded on coal dust
In combustion-supporting oxygen rifle 6, the combustion-supporting oxygen rifle of coal dust 6 is multiple and uniform welding on the two sides of smelting furnace shell body 8 cuboid long side.
During use, first with iron-bearing mineral or iron-contained industrial waste residue as raw material, through material inlet 11 from smelting furnace shell body 8
Top or entered in the molten bath 14 of smelting furnace shell body 8 by the combustion-supporting oxygen rifle 6 of two groups of coal dusts, coal dust is as fuel and reducing agent in height
Body of calming the anger effect is lower to be passed through the combustion-supporting oxygen rifle 6 of two groups of coal dusts and sprays among the melt of below molten bath 14 liquid level, so that melt is in all the time
Fluidized state, under the fierce fluidized state in molten bath, accelerates fusing and the homogenizing of raw material, and oxygen passes through the combustion-supporting oxygen of two groups of coal dusts
Rifle 6 sprays into inside the liquation of molten bath 14 from smelting furnace shell body 8 sidepiece, and the iron-bearing material melt in molten bath 14 is under high-temperature fusion and carbon
Reaction has obtained reduced iron, and with as-reduced metallic iron because density is different, it is double that upper strata melt passes through slag to the slag in molten bath 14
Discharging head piece 10 arrives ore-rock cotton and becomes fine operation, and the metal fusant of lower floor arrives pig iron molding procedure by putting flowing molten iron mouth 4, that is, one
Can be with synchronous production reduction of pig iron and two kinds of products of ore-rock cotton in platform melting furnace apparatus.The present invention can independent reducing metal ferrum,
Can independent melting ore-rock cotton, again can reducing metal ferrum and melting ore-rock cotton simultaneously.Can produce by mineral wool formula, also can join by rock wool
Side produces, and reaches the purpose of low cost production.
Claims (10)
1. a kind of synchronous smelting reduction pig iron and ore-rock cotton smelting furnace it is characterised in that: include smelting furnace basis (1), described molten
Drop-bottom (2) and smelting furnace shell body (8) are installed with furnace foundation (1), the internal package of described smelting furnace shell body (8) has casting
Make formula body of heater cooling jacket (5), between the bottom of described cast type body of heater cooling jacket (5) and drop-bottom (2), form molten bath
(14), the side wall of described molten bath (14) and bottom have all built furnace bottom fire brick layer (3), described cast type body of heater cooling jacket by laying bricks or stones
(5) inner sidewall upper portion and top are provided with furnace wall flame retardant coating (9), and the top of described smelting furnace shell body (8) is provided with material inlet
(11), the side wall upper part of described smelting furnace shell body (8) is provided with exhanst gas outlet (13), the lower sidewall of described smelting furnace shell body (8)
It is provided with to put flowing molten iron mouth (4) and put flowing molten iron mouth (4) and be connected with the bottom of molten bath (14), the medial side of described smelting furnace shell body (8)
Wall is provided with water-cooled furnace door (7) and the top in the double discharging head piece (10) of slag and the double discharging head piece (10) of slag and molten bath (14)
It is connected, the side wall of described smelting furnace shell body (8) is additionally provided with the combustion-supporting oxygen rifle of coal dust (6) and the combustion-supporting oxygen rifle of coal dust (6) and molten bath
(14) it is connected, the combustion-supporting oxygen rifle (6) of described coal dust is provided with wind arm.
2. a kind of synchronous smelting reduction pig iron according to claim 1 and ore-rock cotton smelting furnace it is characterised in that: described
Smelting furnace shell body (8) is linked into an integrated entity with cast type body of heater cooling jacket (5) by bolt.
3. a kind of synchronous smelting reduction pig iron according to claim 1 and 2 and ore-rock cotton smelting furnace it is characterised in that:
The top of described smelting furnace shell body (8) is provided with spy burner (12).
4. a kind of synchronous smelting reduction pig iron according to claim 1 and ore-rock cotton smelting furnace it is characterised in that: described
Cooling water drainage pipe (17) is equipped with drop-bottom (2), described cooling water comb (17) is equipped with heat-conducting layer (18), described heat conduction
Layer (18) is located at the lower section of furnace bottom fire brick layer (3).
5. a kind of synchronous smelting reduction pig iron according to claim 1 and ore-rock cotton smelting furnace it is characterised in that: described
Wind arm includes First air arm (15) and secondary wind arm (16) and First air arm (15) and secondary wind arm (16) all weld
It is connected on the combustion-supporting oxygen rifle of coal dust (6).
6. a kind of synchronous smelting reduction pig iron according to claim 3 and ore-rock cotton smelting furnace it is characterised in that: described
Smelting furnace shell body (8) is Horizontal rectangular structure, and top is semicircular arch shape, bottom is rectangular-shaped.
7. a kind of synchronous smelting reduction pig iron according to claim 6 and ore-rock cotton smelting furnace it is characterised in that: described
Water-cooled furnace door (7) is welded on smelting furnace shell body (8) cuboid minor face face, and described exhanst gas outlet (13) is welded on and water-cooled
Relative smelting furnace shell body (8) the cuboid minor face face of fire door (7).
8. a kind of synchronous smelting reduction pig iron according to claim 7 and ore-rock cotton smelting furnace it is characterised in that: described
Put flowing molten iron mouth (4) to put flowing molten iron mouth for controllable type and be welded on smelting furnace shell body (8) cuboid minor face face, the double discharging of described slag
Head piece (10) is controllable type and is welded on smelting furnace shell body (8) the cuboid minor face face relative with putting flowing molten iron mouth (4).
9. a kind of synchronous smelting reduction pig iron according to claim 8 and ore-rock cotton smelting furnace it is characterised in that: described
The combustion-supporting oxygen rifle of coal dust (6) is multiple and uniform welding on the two sides of smelting furnace shell body (8) cuboid long side.
10. a kind of synchronous smelting reduction pig iron according to claim 1 and ore-rock cotton smelting furnace it is characterised in that: institute
State drop-bottom (2) and smelting furnace shell body (8) is welded on smelting furnace basis (1).
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| CN201610868371.0A CN106369992A (en) | 2016-09-30 | 2016-09-30 | Smelting furnace for synchronously smelting reduced pig iron and ore-rock wool |
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