CN110076881A - A kind of molten blast furnace slag directly prepares the device and method of light block - Google Patents
A kind of molten blast furnace slag directly prepares the device and method of light block Download PDFInfo
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- CN110076881A CN110076881A CN201910490279.9A CN201910490279A CN110076881A CN 110076881 A CN110076881 A CN 110076881A CN 201910490279 A CN201910490279 A CN 201910490279A CN 110076881 A CN110076881 A CN 110076881A
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- slag
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- blast furnace
- homogenizing
- foamed
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- 239000002893 slag Substances 0.000 title claims abstract description 258
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000005520 cutting process Methods 0.000 claims abstract description 39
- 238000007664 blowing Methods 0.000 claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims description 15
- 230000032258 transport Effects 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 12
- 239000002737 fuel gas Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 238000010079 rubber tapping Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000006260 foam Substances 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000011819 refractory material Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 239000011241 protective layer Substances 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims description 2
- 230000003111 delayed effect Effects 0.000 claims 1
- 230000007306 turnover Effects 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000004566 building material Substances 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 239000003818 cinder Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/50—Producing shaped prefabricated articles from the material specially adapted for producing articles of expanded material, e.g. cellular concrete
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/54—Producing shaped prefabricated articles from the material specially adapted for producing articles from molten material, e.g. slag refractory ceramic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B15/00—General arrangement or layout of plant ; Industrial outlines or plant installations
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/138—Waste materials; Refuse; Residues from metallurgical processes, e.g. slag, furnace dust, galvanic waste
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B5/00—Treatment of metallurgical slag ; Artificial stone from molten metallurgical slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/08—Cooling slag
-
- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Dispersion Chemistry (AREA)
- Gasification And Melting Of Waste (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to the device and methods that a kind of molten blast furnace slag prepares light block, molten blast furnace slag pours into homogenizing furnace (2) through diversion trench (1), bottom blowing compressed gas carries out air-blowing making foamed slag to the interior molten blast furnace slag of homogenizing furnace (1), and then use slag slot (9), temperature control furnace (11) handles according to certain cooling rate and obtains light slag base (12), finally carries out cutting using cutting machine (13) and obtains finished light building block (14).The present invention carries out lighting processing to blast furnace slag under the conditions of melt, takes full advantage of " slag, heat " two kinds of resources of blast furnace slag, realizes maximally utilizing for molten blast furnace slag resource.Molten blast furnace slag can get the light block of various specifications through the process, gained block strength is high, and good heat insulating can be widely applied for the field of building materials, it is the effective way of blast furnace slag low cost high value added utilization, there is significant social environment benefit and market economy to be worth.
Description
Technical field
The present invention relates to the device and method that a kind of molten blast furnace slag directly prepares light block, especially a kind of high-temperature liquid
State blast furnace slag directly prepares the device and method of light block for building.
Background technique
China is industrial power, and iron and steel output in 2018 is at 900,000,000 tons or more, more than 50% or more of global total output.Refining
Iron process generates a large amount of blast furnace slag, and one ton of iron of every production about generates 300~400kg of blast furnace slag, in recent years China's blast furnace slag year
Nearly 300,000,000 tons of yield, it is seen that yield is very huge.
Domestic blast furnace slag mainly uses water quenching technology to be handled, and gained blast furnace granulated slag carries out grinding and prepares slag micropowder use
In cement, Concrete Industry.The utilization rate of country's blast furnace slag still has nearly 30% blast furnace slag that can not obtain 70% or more at present
To valuable utilization, in terms of main cause has following two.On the one hand as more concentrating the iron and steel enterprises such as Hebei, northeast
Region, blast furnace slag yield is excessive, and market capacity is smaller, supply surplus, cannot preferably sell；On the other hand, such as climb steel,
The enterprises such as steel, Baogang are held because refining raw material for iron is different from ordinary blast, blast furnace slag composition, which is different from Blast furnace slag, leads to itself
Poor activity, prepared slag micropowder performance is poor, is unable to get valuable utilization.Therefore, it is necessary to develop new blast furnace slag for comprehensive
Utilization ways are conducive to whole resource utilizations of blast furnace slag, cannot only lean on a certain mode to be utilized.
Blast furnace slag main component is CaO, SiO2Etc. inorganic material, and have good stability, the object with building material product preparation
Matter attribute.In addition, about 1400 DEG C of blast furnace slag tapping temperature, ton slag calorific value is more than 40 kilograms of mark coals, and there is high thermal resource to return
Receive value.But existing production technology carries out blast furnace Slag treatment using water quenching and often wastes wherein residual heat resources, is great
The wasting of resources.Product preparation is directly carried out using blast furnace slag in the molten state, it is expected to carry out product using its high temperature properties and add
Work is the effective way that blast furnace slag waste heat utilizes.
The production of domestic light block there are mainly two types of method, steamed using foaming at normal temp, moulding by casting, still kettle by a kind of method
Press treatment process；On the other hand it is handled using high temperature sintering foam process.Two methods have production material certain
Furthermore component requirements generally require a large amount of energy using steam pressure or sintering process processing.Using molten blast furnace slag in high temperature melting
Light block is prepared under the conditions of state, blast furnace slag waste heat is effectively utilized, while being prepared gained light block and being directly realized height
The high value added utilization of clinker is the effective way of blast furnace slag comprehensive utilization.
Summary of the invention
The present invention directly prepares the device of light block using molten blast furnace slag, carries out under the conditions of melt to blast furnace slag light
Matterization processing, realizes maximally utilizing for molten blast furnace slag resource.The present invention realizes melting blast furnace under conditions of relatively inexpensive
The high efficiency of slag, equipmentization, automation, high added value recycling treatment, technique has technique outstanding and environment-friendly advantage, will
The significant raising for pushing blast furnace residues processing technique and level of comprehensive utilization has and utilizes realization blast furnace slag zero-emission.
The present invention proposes that a kind of molten blast furnace slag directly prepares the device of light block, and described device includes: diversion trench
(1), homogenizing furnace (2), bottom blowing plate (3), gas-guide tube (4), burner noz(zle) (5), fuel gas conduit (6), slag notch (7), unhurried current packet (8),
Slag slot (9), slag-conveying machinery, preferably slag waggon (10), temperature control furnace (11) and cutting machine (13)；Diversion trench (1) is arranged equal
The top for changing furnace (2), for molten blast furnace slag to be poured into homogenizing furnace (2) through diversion trench (1)；Bottom blowing plate (3) is arranged in homogenizing furnace
(1) bottom, gas-guide tube (4) connect bottom blowing plate (3), for compressed gas to be blown into homogenizing furnace (2) through bottom blowing plate (3),
Foamed processing is carried out to the molten blast furnace slag in homogenizing furnace (2)；Burner noz(zle) (5) is arranged in the side of homogenizing furnace (2), combustion gas
(6) connection burner noz(zle) (5) is managed, burner noz(zle) (5) is for carrying out heating temperature adjustment to the molten blast furnace slag in homogenizing furnace (2)；Out
Cinder notch (7) is arranged in the side of homogenizing furnace (2)；In the lower part of slag notch (7), being used for will be at homogenizing furnace (2) for unhurried current packet (8) setting
The foamed slag obtained after reason pours into unhurried current packet (8) through slag notch (7), and slag slot (9) may be provided at slag-conveying machinery, preferably transport
On the slag car (10), slag-conveying machinery, preferably slag waggon (10) can move between unhurried current packet (8) and temperature control furnace (11), will delay
Foamed slag in stream packet (8) transports in temperature control furnace (11), for foamed slag to be cooled down and solidified by temperature control furnace (11)
Molding, to obtain light slag base (12)；Temperature control furnace (11) connects cutting machine (13), for being obtained temperature control furnace (11) by cutting machine
The light slag base (12) obtained carries out cutting process, obtains light block (14).
Wherein, the diversion trench (1), homogenizing furnace (2), slag notch (7), unhurried current packet (8) and temperature control furnace (11) are provided with
Refractory material is as protective layer；The material of the slag slot (9) is steel.
Wherein, the bottom blowing plate (3) is perforated plate-like structure, and material is refractory material, and gas-guide tube (4) connects porous plate
Shape structure, for blasting in homogenizing furnace (2) compressed gas through perforated plate-like structure, to the molten blast furnace slag in homogenizing furnace (2)
It is stirred, to carry out foamed processing to molten blast furnace slag.
Wherein, the gas-guide tube (4) is pressure pipeline, and pipe design pressure is not less than 0.6MPa.
Wherein, the homogenizing furnace (2) can be tilted overturning and slag tap, and flip angle is not less than 120 degree.
Wherein, slag slot (9) can be transported into and/or be transported temperature control furnace by the slag-conveying machinery, preferably slag waggon (10)
(11), the controllable cooling of foamed slag is realized.
Wherein, temperature control furnace (11) is by the slag-conveying machinery, preferably slag waggon (10) connection cutting machine (13), dress of mucking haulage
It sets, preferably slag waggon (10) transports light slag base (12) to cutting machine (13) to carry out cutting process.
The invention further relates to a kind of methods that molten blast furnace slag directly prepares light block, it is preferred to use a kind of above-mentioned melting
Blast furnace slag directly prepares the method that the device of light block directly prepares light block, includes the following steps:
(1) molten blast furnace slag pours into homogenizing furnace (2) through diversion trench (1), and compressed gas blasts homogenizing furnace through bottom blowing plate (3)
(2) in, foamed is carried out to the molten blast furnace slag in homogenizing furnace (2), foams the melting blast furnace in homogenizing furnace (2) to form foam
Slag；Burner noz(zle) (5) is by the molten blast furnace slag in fuel gas buring heating homogenizing furnace (2), to prevent molten blast furnace slag because of homogenizing
Temperature drop is excessive in furnace causes mobility to be deteriorated, and preferably the ignition temperature of burner noz(zle) (5) is at 1600 DEG C or more；
(2) it is poured into unhurried current packet (8) by the foamed slag that homogenizing furnace (2) processing obtains through slag notch (7), foamed slag is at the uniform velocity
It is flowed into slag slot (9) from unhurried current packet (8)；
(3) the slag slot (9) for having connect foamed slag is transported into temperature control furnace (11) by slag-conveying machinery, preferably slag waggon (10),
Temperature control furnace (11) docking slag chute (9) interior foamed slag is cooled down, and curing molding obtains light slag base (12)；
(4) slag-conveying machinery is used, preferably slag waggon (10) transports light slag base (12) out of temperature control furnace (11), and conveys
To cutting machine (13), cutting process is carried out to light slag base (12) using cutting machine (13), is obtained light block (14).
Wherein, molten blast furnace slag homogenizing activity duration in homogenizing furnace (2) is 10-60 minutes.
Wherein, the tapping temperature of homogenizing furnace (2) is 1300-1600 DEG C.It is preferred that foamed slag in unhurried current packet (8) tapping process
Fluctuation range is no more than 0.2m up and down for liquid level maintenance.It is preferred that slag slot (9) has connect the liquid level of foamed slag from slag slot (9) top
Distance is not less than 0.05m.It is preferred that aperture is the quantity of the micropore of 3mm or more less than 10% in light slag base (12), light slag base density
Control range is 200-2200kg/m3.It is preferred that light block (14) compression strength control range is 1-60MPa, thermal coefficient model
It encloses for 0.01-0.5W/ (m ﹒ K).
The present invention relates to a kind of molten blast furnace slags directly to prepare light block device comprising: diversion trench, homogenizing furnace, bottom
Plate is blown, gas-guide tube, burner noz(zle), fuel gas conduit, slag notch, flow slowly packet, slag slot, slag waggon, temperature control furnace, light slag base, cutting machine,
Light block；Molten blast furnace slag connects homogenizing furnace through diversion trench；Bottom blowing plate is in homogenizing furnace bottom；Gas-guide tube connects equal through bottom blowing plate
Change furnace；Burner noz(zle) is in homogenizing furnace side；Fuel gas conduit connects homogenizing furnace through burner noz(zle)；Slag notch is in homogenizing furnace side；Unhurried current
Packet is in slag notch lower part；Slag slot wraps lower part in unhurried current；Slag slot is on slag waggon.Wherein, the diversion trench, homogenizing furnace, out
Cinder notch, unhurried current packet, temperature control furnace are respectively provided with refractory material as protective layer.Wherein, the bottom blowing plate is to be prepared using refractory material
Gained perforated plate-like structure, the compressed gas that gas-guide tube conveying comes enter in homogenizing furnace through bottom blowing small drum for marking time, for the drum into homogenizing furnace
Enter compressed gas to be stirred, foamed processing is carried out to wherein molten blast furnace slag.Wherein, the gas-guide tube is pressure pipeline,
Pipe design pressure is not less than 0.6MPa.Wherein, the burner noz(zle) can be in homogenizing furnace using fuel gas conduit conveying gaseous fuel
Material carries out heating temperature adjustment.Wherein, the homogenizing furnace can be tilted overturning and slag tap, and flip angle is not less than 120 degree.Wherein,
The slag slot is using steel as raw material.Wherein, slag slot can be transported into and transport temperature control furnace by the slag waggon, realize liquid slag
Controllable cooling.
The invention further relates to a kind of methods that molten blast furnace slag directly prepares light block, include the following steps:
(1) molten blast furnace slag pours into homogenizing furnace through diversion trench, and compressed gas enters in homogenizing furnace through bottom blowing small drum for marking time, to homogenizing
Molten blast furnace slag carries out foamed in furnace, foams to form foamed slag by blast furnace is melted in homogenizing furnace.
(2) foamed slag pours into unhurried current packet through slag notch, and unhurried current wraps interior liquid level and fluctuates up and down in a certain range, bubble
Foam slag at the uniform velocity enters in slag slot from unhurried current packet stream.
(3) the slag slot for having connect foamed slag is transported into temperature control furnace by slag waggon, and foamed slag is according to given pace in slag slot
It is cooled down, curing molding, obtains light slag base.
(4) light slag base is transported out of temperature control furnace using slag waggon, using cutting machine to light slag base according to certain specification into
Row cutting process obtains finished light building block.Wherein, molten blast furnace slag be homogenized in homogenizing furnace the activity duration be 10~60 points
Clock.Wherein, homogenizing furnace tapping temperature is 1300~1600 DEG C.Wherein, foamed slag liquid level maintains up and down in unhurried current packet tapping process
Fluctuation range is no more than 0.2m.Wherein, the liquid level that slag slot has connect foamed slag is not less than 0.05m with a distance from slag groove top end.Its
In, micropore size 3mm's or more less than 10% in light slag base.Wherein, light slag base density domination range is 200~2200kg/m3。
Wherein, light block compression strength control range is 1~60MPa.Wherein, light block thermal coefficient range be 0.01~
0.5W/ (m ﹒ K).
The invention has the advantages that realizing that molten blast furnace slag directly prepares light block processing, treatment process on device and in method
Low energy consumption, and safety and environmental protection, technical process is simple, equipmentization high degree of automation, and system process cycle is short, and system cost is low.It is logical
Light block after crossing the process can be realized the effective use of molten blast furnace slag " slag, heat " two kinds of resources, realize height
The inexpensive high value added utilization of clinker.
Detailed description of the invention
Fig. 1 fusion smelting slag blast furnace slag directly prepares light block processing unit schematic diagram.
Specific embodiment
As shown in Figure 1, a kind of molten blast furnace slag directly prepares the device of light block, described device include: diversion trench 1,
Homogenizing furnace 2, bottom blowing plate 3, gas-guide tube 4, burner noz(zle) 5, fuel gas conduit 6, slag notch 7, unhurried current packet 8, slag slot 9, slag-conveying machinery, it is excellent
It is selected as slag waggon 10, temperature control furnace 11 and cutting machine 13；The top of homogenizing furnace 2 is arranged in diversion trench 1, for passing through molten blast furnace slag
Diversion trench 1 pours into homogenizing furnace 2；The bottom of homogenizing furnace 1 is arranged in bottom blowing plate 3, and gas-guide tube 4 connects bottom blowing plate 3, is used for compressed gas
Body is blown into homogenizing furnace 2 through bottom blowing plate 3, carries out foamed processing to the molten blast furnace slag in homogenizing furnace 2；Burner noz(zle) 5 is set
Set in the side of homogenizing furnace 2, fuel gas conduit 6 connects burner noz(zle) 5, burner noz(zle) 5 be used for the molten blast furnace slag in homogenizing furnace 2 into
Row heating temperature adjustment；The side of homogenizing furnace 2 is arranged in slag notch 7；The lower part of slag notch 7 is arranged in unhurried current packet 8, is used for homogenizing furnace
The foamed slag obtained after 2 processing pours into unhurried current packet 8 through slag notch 7, and slag slot 9 may be provided at slag-conveying machinery, preferably muck haulage
On vehicle 10, slag-conveying machinery, preferably slag waggon 10 can move between unhurried current packet 8 and temperature control furnace 11, by the bubble in unhurried current packet 8
Foam slag transports in temperature control furnace 11, for carrying out cooling and curing molding to foamed slag by temperature control furnace 11, to obtain light slag
Base 12；Temperature control furnace 11 connects cutting machine 13, and the light slag base 12 for being obtained temperature control furnace 11 by cutting machine carries out cutting process,
Obtain light block 14.Slag-conveying machinery, preferably slag waggon 10, but it is known in the art that conveyer belt or overhead traveling crane can also be used
Equal slag-conveying machineries.
Wherein, the diversion trench 1, homogenizing furnace 2, slag notch 7, unhurried current packet 8 and temperature control furnace 11 are provided with refractory material work
For protective layer；The material of the slag slot 9 is steel.Wherein, the bottom blowing plate 3 is perforated plate-like structure, and material is fire resisting
Material, gas-guide tube 4 connects perforated plate-like structure, for blasting in homogenizing furnace 2 compressed gas through perforated plate-like structure, to homogenizing
Molten blast furnace slag in furnace 2 is stirred, to carry out foamed processing to molten blast furnace slag.Compressed gas be normal air,
Nitrogen, argon gas, CO2Equal gases, preferably inert gas.
Wherein, the gas-guide tube 4 is pressure pipeline, and pipe design pressure is not less than 0.6MPa.Wherein, the homogenizing furnace 2
It can be tilted overturning to slag tap, flip angle is not less than 120 degree.
Wherein, slag slot 9 can be transported into and/or be transported temperature control furnace 11 by the slag-conveying machinery, preferably slag waggon 10, be realized
The controllable cooling of foamed slag.
Wherein, temperature control furnace 11 connects cutting machine 13 by the slag-conveying machinery, preferably slag waggon 10, and slag-conveying machinery is excellent
Slag waggon 10 is selected as to transport light slag base 12 to cutting machine 13 to carry out cutting process.
As shown in Figure 1, a kind of method that molten blast furnace slag directly prepares light block, includes the following steps: step (1):
Molten blast furnace slag pours into homogenizing furnace 2 through diversion trench 1, and compressed gas blasts in homogenizing furnace 2 through bottom blowing plate 3, melts in homogenizing furnace 2
Melt blast furnace slag and carry out foamed, foams to form foamed slag by blast furnace is melted in homogenizing furnace 2, burner noz(zle) 5 is added by fuel gas buring
Molten blast furnace slag in hot homogenizing furnace, to prevent molten blast furnace slag from causing mobility too poor because temperature drop is excessive in homogenizing furnace, burning spray
5 ignition temperature of mouth is at 1600 DEG C or more.Step (2): foamed slag pours into unhurried current packet 8 through slag notch 7, and liquid level is high in unhurried current packet 8
In a certain range, foamed slag at the uniform velocity flows into slag slot 9 from unhurried current packet 8 for fluctuation about degree.Step (3): slag waggon 10 will connect
The slag slot 9 of complete foamed slag is transported into temperature control furnace 11, and (temperature control furnace is according to product class according to given pace for foamed slag in slag slot 9
Cooling outlet temperature and rate is mediated in type difference, on the one hand can blast normal temperature air and carry out chilling operation, can also lead to
It crosses and blasts high-temperature hot-air and kept the temperature, heated up and slow cooling operation, operating process and cooling rate change procedure are according to specifically
Depending on product, general cooling time is 1~10h) it is cooled down, curing molding, obtain light slag base 12.Step (4): it uses and mucks haulage
Vehicle 10 transports light slag base 12 out of temperature control furnace 11, carries out cut place according to certain specification to light slag base 12 using cutting machine 13
Reason obtains finished light building block 14.Wherein, it is preferred to use slag waggon 10 transports light slag base 12 to cutting machine 13, by setting
Determine 13 cutting technique parameter of cutting machine and automatic cutting is carried out to light slag base 12, cutting machine 13 is with fixed, lifting, mobile, cutting
The operating function of light slag base 12.
Wherein, molten blast furnace slag be homogenized in homogenizing furnace 2 activity duration be 10~60 minutes.
Wherein, 2 tapping temperature of homogenizing furnace is 1300~1600 DEG C.
Wherein, fluctuation range is no more than 0.2m to the maintenance of foamed slag liquid level up and down in 8 tapping process of unhurried current packet.
Wherein, the liquid level that slag slot 9 has connect foamed slag is not less than 0.05m with a distance from 10 top of slag slot.
Wherein, in light slag base 12 micropore size 3mm or more less than 10%, light slag base density domination range be 200~
2200kg/m3。
Wherein, 14 compression strength control range of light block is 1~60MPa, and thermal coefficient range is 0.01~0.5W/
(m ﹒ K).
Claims (10)
1. the device that a kind of molten blast furnace slag directly prepares light block, which is characterized in that described device include: diversion trench (1),
Homogenizing furnace (2), bottom blowing plate (3), gas-guide tube (4), burner noz(zle) (5), fuel gas conduit (6), slag notch (7), unhurried current packet (8), slag
Slot (9), slag-conveying machinery, preferably slag waggon (10), temperature control furnace (11) and cutting machine (13)；Diversion trench (1) is arranged in homogenizing furnace
(2) top, for molten blast furnace slag to be poured into homogenizing furnace (2) through diversion trench (1)；Bottom blowing plate (3) is arranged in homogenizing furnace (1)
Bottom, gas-guide tube (4) connect bottom blowing plate (3), for compressed gas to be blown into homogenizing furnace (2) through bottom blowing plate (3), to homogenizing
Molten blast furnace slag in furnace (2) carries out foamed processing；Burner noz(zle) (5) is arranged in the side of homogenizing furnace (2), fuel gas conduit (6)
It connects burner noz(zle) (5), burner noz(zle) (5) is for carrying out heating temperature adjustment to the molten blast furnace slag in homogenizing furnace (2)；Slag notch
(7) it is arranged in the side of homogenizing furnace (2)；Unhurried current packet (8) setting is in the lower part of slag notch (7), for will be after homogenizing furnace (2) processing
Obtained foamed slag pours into unhurried current packet (8) through slag notch (7), and slag slot (9) may be provided at slag-conveying machinery, preferably slag waggon
(10) on, slag-conveying machinery, preferably slag waggon (10) can move between unhurried current packet (8) and temperature control furnace (11), and unhurried current is wrapped
(8) foamed slag in transports in temperature control furnace (11), for carrying out cooling and curing molding to foamed slag by temperature control furnace (11),
To obtain light slag base (12)；Temperature control furnace (11) connects cutting machine (13), for obtained temperature control furnace (11) by cutting machine
Light slag base (12) carries out cutting process, obtains light block (14).
2. the apparatus according to claim 1, which is characterized in that the diversion trench (1), slag notch (7), is delayed homogenizing furnace (2)
Stream packet (8) and temperature control furnace (11) are provided with refractory material as protective layer；The material of the slag slot (9) is steel.
3. device according to claim 1 or 2, which is characterized in that the bottom blowing plate (3) is perforated plate-like structure, material
Material is refractory material, and gas-guide tube (4) connects perforated plate-like structure, for compressed gas to be blasted homogenizing furnace through perforated plate-like structure
(2) in, the molten blast furnace slag in homogenizing furnace (2) is stirred, to carry out foamed processing to molten blast furnace slag.
4. according to device of any of claims 1 or 2, which is characterized in that the gas-guide tube (4) is pressure pipeline, pipe design pressure
Power is not less than 0.6MPa.
5. according to device of any of claims 1 or 2, which is characterized in that the homogenizing furnace (2) can be tilted overturning and slag tap, and turn over
Gyration is not less than 120 degree.
6. according to device of any of claims 1 or 2, which is characterized in that the slag-conveying machinery, preferably slag waggon (10) can will connect
Slag chute (9) is transported into and/or transports temperature control furnace (11), realizes the controllable cooling of foamed slag.
7. according to device of any of claims 1 or 2, which is characterized in that temperature control furnace (11) is preferably transported by the slag-conveying machinery
The slag car (10) connects cutting machine (13), and slag-conveying machinery, preferably slag waggon (10) transport light slag base (12) to cutting machine (13)
To carry out cutting process.
8. a kind of method that molten blast furnace slag directly prepares light block, which comprises the steps of:
(1) molten blast furnace slag pours into homogenizing furnace (2) through diversion trench (1), and compressed gas blasts homogenizing furnace (2) through bottom blowing plate (3)
It is interior, foamed is carried out to the molten blast furnace slag in homogenizing furnace (2), foams the melting blast furnace in homogenizing furnace (2) to form foamed slag；
Burner noz(zle) (5) is by the molten blast furnace slag in fuel gas buring heating homogenizing furnace (2), to prevent molten blast furnace slag because in homogenizing furnace
Temperature drop is excessive to cause mobility to be deteriorated, and preferably the ignition temperature of burner noz(zle) (5) is at 1600 DEG C or more；
(2) it is poured into unhurried current packet (8) by the foamed slag that homogenizing furnace (2) processing obtains through slag notch (7), foamed slag is at the uniform velocity postponed
Stream packet (8) flows into slag slot (9)；
(3) the slag slot (9) for having connect foamed slag is transported into temperature control furnace (11) by slag-conveying machinery, preferably slag waggon (10), temperature control
Furnace (11) docking slag chute (9) interior foamed slag is cooled down, and curing molding obtains light slag base (12)；
(4) slag-conveying machinery is used, preferably slag waggon (10) transports light slag base (12) out of temperature control furnace (11), and is transported to and cuts
Cutting mill (13) carries out cutting process to light slag base (12) using cutting machine (13), obtains light block (14).
9. according to the method described in claim 8, it is characterized in that, molten blast furnace slag is homogenized the activity duration in homogenizing furnace (2)
It is 10-60 minutes.
10. according to the method described in claim 9, it is characterized by: the tapping temperature of homogenizing furnace (2) is 1300-1600 DEG C.It is excellent
Choosing, unhurried current wraps foamed slag liquid level maintenance in (8) tapping process, and fluctuation range is no more than 0.2m up and down.It is preferred that slag slot (9) has connect
The liquid level of foamed slag is not less than 0.05m with a distance from slag slot (9) top.It is preferred that aperture is the micro- of 3mm or more in light slag base (12)
For the quantity in hole less than 10%, light slag base density domination range is 200-2200kg/m3.It is preferred that light block (14) compression strength
Control range is 1-60MPa, and thermal coefficient range is 0.01-0.5W/ (m ﹒ K).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111530592B (en) * | 2020-05-09 | 2021-05-04 | 马鞍山市鑫火科技有限公司 | Recycling processing technology for converter steel slag |
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