CN108863045A - A kind of method of blast furnace slag hot-loading and hot-conveying - Google Patents
A kind of method of blast furnace slag hot-loading and hot-conveying Download PDFInfo
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- CN108863045A CN108863045A CN201810808851.7A CN201810808851A CN108863045A CN 108863045 A CN108863045 A CN 108863045A CN 201810808851 A CN201810808851 A CN 201810808851A CN 108863045 A CN108863045 A CN 108863045A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/04—Manufacture of glass fibres or filaments by using centrifugal force, e.g. spinning through radial orifices; Construction of the spinner cups therefor
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
- C03C13/06—Mineral fibres, e.g. slag wool, mineral wool, rock wool
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
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Abstract
The invention discloses a kind of methods of blast furnace slag hot-loading and hot-conveying, are related to blast-furnace slag application technology as the second resource field.High-temperature slag is packed into the slag ladle body of slag ladle and carriage by the present invention, the intracorporal high-temperature slag of slag ladle is cooled down, then the intracorporal high-temperature slag of slag ladle is kept the temperature, and high-temperature slag is transported by slag ladle and carriage, slag ladle tank body includes inlet and outlet pipes；Slag ladle tank body includes inner canister layer and outer tank layer, is provided with cavity layer between inner canister layer and outer tank layer；Inlet and outlet pipes are disposed through on outer tank layer, with cavity layer phase.The present invention injects cooling water into cavity layer by water inlet line, and being rapidly cooled to the high-temperature slag of loading makes it form skull on inner canister layer inner wall, prevents slag from bonding with slag ladle tank body；Then cooling water in cavity layer is discharged by outlet conduit, the intracorporal high-temperature slag of slag ladle is kept the temperature, inner canister layer inner wall is avoided to form blocked up skull.
Description
Technical field
The present invention relates to blast-furnace slag application technology as the second resource fields, more specifically to a kind of blast furnace slag hot charging heat
The method sent.
Background technique
Mineral wool is a kind of puffy short glass fibre as made from molten silicate object, with light, thermal coefficient is small, non-ignitable
It burns, the features such as mothproof, inexpensive, corrosion-resistant, chemical stability is good, sound absorbing performance is good.It can be used for the filling insulation of building, inhale
Sound, sound insulation, oxygenerator and freezer cold insulation and various heat power equipments are stuffed heat insulated etc..Rock wool and slag can be divided by raw material used
Cotton two major classes.Rock wool is with natural rock such as basalt, gabbro, dolomite, iron ore, bauxite etc. for primary raw material, warp
High temperature melting, fibrosis and manufactured inorganic fibre.This method needs a large amount of exploitation natural rocks, easily causes vegetation deterioration,
The environmental problems such as soil erosion, land occupation.Moreover, natural rock will pass through high temperature melting, need to consume a large amount of energy.Mine
Slag wool is with industrial waste slag such as blast furnace slag, phosphorus ore slag, flyash etc. for primary raw material, through high temperature melting, using high speed from
Staple shape inorfil made of the techniques such as heart method or blowing process, especially with blast furnace slag mineral wool, the technical process is not
Need water, and high-temperature slag directly cotton processed when recyclable 80% or more sensible heat be a kind of economically feasible for iron and steel enterprise
Dry process technique.
Blast furnace is the important component of integrated iron and steel works, and blast-furnace technique economic indicator is good, simple process, output
Greatly, labor productivity is high, and low energy consumption, and the pig iron of production accounts for 95% of world iron total output or more.Blast furnace slag is blast furnace ironmaking
Main By product, discharge temperature is at 1400 DEG C or more.Under normal circumstances, 1t blast furnace cinder contains sensible heat 1675MJ, about quite
The heat released when 57kg standard coal combustion.Blast furnace slag mostly uses water quenching to handle greatly at present, need to consume a large amount of water, and high
The high temperature sensible heat of clinker discharges in vain to be difficult to recycle, and H is generated when water quenching2S、SO2Equal pernicious gases pollute environment, therefore high
The hot spot for being developed into domestic and international iron and steel enterprise's research of clinker dry process technique.
But during using blast furnace slag production mineral wool, when between blast fumance workshop and mineral wool workshop
Distance farther out when, need to transport blast furnace slag to mineral wool workshop.It the use of more handling technigue is at present to pass through slag
Tank is shipped, and there are mainly two types of the structures of blast furnace slag slag ladle：One kind is refractory material (clay brick, high-alumina brick, magnesia) liner
Add the double-layer structure of outer steel shell material, another kind is the single layer structure of cast iron, straight carbon steel material.The blast furnace slag slag ladle of double-layer structure
Thermal conductivity is poor, slag ladle liner and high-temperature slag between be not easy to form skull, and refractory material (clay brick, high-alumina brick, magnesium
Matter) and high-temperature slag between cementitiousness it is stronger, cause high-temperature slag to be easy to be bonded on slag ladle inner wall, it has not been convenient to subsequent height
Warm slag is poured out, and the cleaning treatment process of subsequent slag ladle is made to become cumbersome, reduces the utilization rate of blast furnace slag；Single layer knot
The blast furnace slag slag ladle thermal conductivity of structure is preferable, easily forms skull between cast iron, straight carbon steel and high-temperature slag, and cast iron, straight carbon steel with
Cementitiousness between high-temperature slag is weaker, so that slag ladle inner wall is not easy to bond high-temperature slag, facilitates pouring out for high-temperature slag, but
It is if the transportational process time is longer, the upper surface of slag ladle inner wall and high-temperature slag will form blocked up skull, reduce blast furnace
The utilization rate of slag, and blocked up skull is difficult to be crushed, and then influences rhythm of production.So now needing a kind of handling technigue can make
It obtains and is not easy to bond between slag ladle inner wall and high-temperature slag, and be not easy to form blocked up skull in shipment.
Through retrieving, innovation and creation it is entitled：A kind of melting method (application number of liquid blast furnace production mineral wool：
201510250252.4 the applying date：2015-09-16), a kind of liquid blast furnace production mineral wool is disclosed in this application
Melting method, it is up big and down small rounding taper type that the slag ladle used is previously mentioned in this method；Slag ladle shell is steel plate, and inner wall is
Fire resistant heat preserving tank lining, wherein heat insulation tank lining bag includes heat preservation internal layer and fire resisting working lining, and heat preservation internal layer is using light weight fireclay brick or glues
Native refractory brick；Fire resisting working lining is using acid ramming material.The slag ladle mentioned in this application can be improved to a certain extent
The service life of slag ladle, but the slag ladle still remains its inner wall and is easy and the bonding problem of high-temperature slag.
Summary of the invention
1. technical problems to be solved by the inivention
Present invention solves the technical problem that being, it is hardly formed for high-temperature slag during using slag ladle to ship blast furnace slag
The problem of skull appropriate, provides a kind of method of blast furnace slag hot-loading and hot-conveying；By the slag that high-temperature slag is packed into slag ladle and carriage
In tank, first the intracorporal high-temperature slag of slag ladle is cooled down, is formed intracorporal to slag ladle after the skull of suitable thickness
High-temperature slag is kept the temperature, and is transported by slag ladle and carriage to high-temperature slag.
2. technical solution
In order to achieve the above objectives, technical solution provided by the invention is：
High-temperature slag is packed into the slag ladle body of slag ladle and carriage by a kind of method of blast furnace slag hot-loading and hot-conveying of the invention, right
The intracorporal high-temperature slag of slag ladle is cooled down, and is then kept the temperature to the intracorporal high-temperature slag of slag ladle, and pass through slag ladle and carriage
High-temperature slag is transported.
Optimally, specific cooling, incubation step are：
Step 1: cooling treatment
Before slag ladle tank body is packed into high-temperature slag, cooling water is injected into cavity layer by water inlet line, then by high temperature
Slag is fitted into slag ladle tank body, and cooling water cools down the high-temperature slag in slag ladle tank body, so that high-temperature slag is in slag ladle
Skull is rapidly cooled to form on the inner canister layer inner wall of body；
Step 2: isothermal holding
After high-temperature slag forms skull on the inner canister layer inner wall of slag ladle tank body, outlet conduit is by the cooling water in cavity layer
It empties, gassy forms gas interlayer in cavity layer, and cavity layer carries out isothermal holding to the high-temperature slag in inner canister layer.
Optimally, the water inlet of water inlet line is set to the junction of inner canister can body section and inner canister tank bottom section, cooling water from
The junction sprays into cavity layer.
Optimally, outlet conduit includes upper water-out pipeline and lower discharging tube road, and the cooling water in cavity layer is by upper water-out pipe
Road and the discharge of lower discharging tube road.
Optimally, water inlet line is closed after starting isothermal holding in step 2, the cooling water in cavity layer is by lower discharging tube
Road discharge, cavity layer form gas interlayer.
Optimally, Step 1: the cooling system of cooling treatment
(1) when 0-5min, the flow of cooling water is Q1；
(2) when 5-10min, the flow of cooling water is Q2, and Q2=kQ1, k value is 0.2~0.3.
Optimally, slag ladle tank body includes inner canister layer and outer tank layer, is provided with cavity layer between inner canister layer and outer tank layer.
Optimally, the inner canister layer is cast iron layer.
A kind of method using blast-furnace slag production mineral wool of the invention, specific step is as follows：
Step 1：High-temperature slag transhipment
High-temperature slag conveyer method is the method for the described in any item blast furnace slag hot-loading and hot-conveyings of the claims 1-8, is led to
It crosses slag ladle and carriage and high-temperature slag is transported to mineral wool workshop；
Step 2：Electro-smelting
Clinker is added into electric melting furnace, while electrode is powered, and is heated using the electric conductivity of slag, melting；
Step 3：Electric furnace heating
Clinker after melting is kept the temperature in electric mantle heater, is controlled temperature at 1550-1600 DEG C, will be melted in electric mantle heater
Slag leads to centrifugation fiberizer with chute through slag notch；
Step 4：Fiber is made in centrifugation
In centrifugation fiberizer, under the action of the centrifugal force, slag is dispersed and is drawn into fiber clinker；Molding fiber exists
Base cotton is formed under wind action in conjunction with binder, it is mineral wool that glomeration material, which is prepared, by pelletizer in base cotton fiber.
3. beneficial effect
Using technical solution provided by the invention, compared with existing well-known technique, there is following remarkable result：
(1) high-temperature slag is packed into the slag ladle body of slag ladle and carriage by the method for a kind of blast furnace slag hot-loading and hot-conveying of the invention,
The intracorporal high-temperature slag of slag ladle is cooled down, then the intracorporal high-temperature slag of slag ladle is kept the temperature, and pass through slag ladle
Vehicle transports high-temperature slag；Water inlet line on slag ladle tank body injects cooling water into cavity layer, and cooling water is to loading
High-temperature slag, which is rapidly cooled, forms it into skull, and the skull quickly formed is separated with inner canister layer, prevent slag with
Slag ladle tank body bonds；After then water is discharged by outlet conduit in cavity layer, gassiness cavity layer can be to slag ladle
Intracorporal high-temperature slag is kept the temperature, and inner canister layer inner wall is avoided to form blocked up skull, so that skull is easily broken, is improved
The utilization rate of blast furnace slag；
(2) method of a kind of blast furnace slag hot-loading and hot-conveying of the invention, cavity layer can effectively protect high-temperature slag
Temperature avoids the heat dissipation that high-temperature slag is excessive, so that the sensible heat of high-temperature slag obtains sufficiently during late resourceization utilizes
It utilizes, avoids the waste of blast-furnace cement sensible heat resource；
(3) method of a kind of blast furnace slag hot-loading and hot-conveying of the invention, inner canister layer is cast iron layer, between cast iron high-temperature slag
Bonding coefficient is smaller, so that be not susceptible to bond between inner canister layer and skull, and then in subsequent high temperature slag during pouring out,
Skull is facilitated to be separated with inner canister layer；
(4) method of a kind of blast furnace slag hot-loading and hot-conveying of the invention, cooling treatment is in the process according to certain cooling system
To control the flow of cooling water, covering slag tank, the service life of extension slag ladle tank body.
(5) method of a kind of blast furnace slag hot-loading and hot-conveying of the invention, a kind of utilization carried out using the hot-loading and hot-conveying method
Blast-furnace slag produce mineral wool method, the high-temperature slag for using raw material to generate for blast furnace, high-temperature slag in shipment and
Slag ladle body forms skull, convenient for pouring out for subsequent step high-temperature slag；It was avoided the formation of additionally by the heat preservation of slag ladle tank body
Thick skull does not influence the progress of production process so that high-temperature slag is poured out rear skull and is easily broken.This method and cold slag produce
Mineral wool reduces energy consumption compared to reheating is not required to, and reduces production cost, especially realizes effective benefit to blast furnace slag waste heat
With；Directly blast furnace slag is turned waste into wealth, is realized the energy-saving and emission-reduction of iron and steel enterprise, and mineral wool product obtained can also answer extensively
For building, the industries such as thermal technology, added value of product is high, good in economic efficiency.
Detailed description of the invention
Fig. 1 is a kind of method structural schematic diagram of blast furnace slag hot-loading and hot-conveying of the invention；
Fig. 2 is a kind of enlarged drawing of the method water inlet line of blast furnace slag hot-loading and hot-conveying of the invention；
Fig. 3 is the structural schematic diagram of the embodiment of the present invention 2；
Fig. 4 is flow chart of the invention.
Label declaration in schematic diagram：
100, slag ladle tank body；110, inner canister layer；111, inner canister can body section；112, inner canister tank bottom section；
120, cavity layer；121, can body section cavity；122, tank bottom section cavity；
130, outer tank layer；131, outer tank insulating layer；
140, linkage section；
210, water inlet line；211, water inlet tube hub line；221, upper water-out pipeline；222, lower discharging tube road.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings, in attached drawing
Several embodiments of the invention are given, still, the invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description, on the contrary, purpose of providing these embodiments is make it is more thorough and comprehensive to the disclosure.
It should be noted that it can directly on the other element when element is referred to as " being fixedly arranged on " another element
Or there may also be elements placed in the middle；When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements；Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement are for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical；Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention；Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
Hereafter detailed description of the present invention and example embodiment are more fully understood in combination with attached drawing, wherein of the invention
Element and feature are identified by appended drawing reference.
Embodiment 1
Referring to Figures 1 and 2, high-temperature slag is packed into the slag ladle of slag ladle and carriage by a kind of method of blast furnace slag hot-loading and hot-conveying first
In tank body 100, the high-temperature slag in slag ladle tank body 100 is cooled down, then the high-temperature slag in slag ladle tank body 100 is carried out
Heat preservation, and high-temperature slag is transported by slag ladle and carriage.As shown in figure 4, specific step is：
Step 1: cooling treatment
Before slag ladle tank body 100 is packed into high-temperature slag, cooling water is injected into cavity layer 120 by water inlet line 210,
High-temperature slag is fitted into slag ladle tank body 100 again, cooling water cools down the high-temperature slag in slag ladle tank body 100, so that high
Warm slag rapidly cools to form skull on 110 inner wall of inner canister layer of slag ladle tank body 100；
Step 2: isothermal holding
After high-temperature slag forms skull on 110 inner wall of inner canister layer of slag ladle tank body 100, outlet conduit is by cavity layer 120
Interior cooling water empties, and gassy forms gas interlayer in cavity layer 120, and cavity layer 120 is to the high temperature melting in inner canister layer 110
Slag carries out isothermal holding.
Wherein, water inlet line 210 and outlet conduit are provided on slag ladle tank body 100, slag ladle tank body 100 includes inner canister layer
110 and outer tank layer 130, it is provided with cavity layer 120 between inner canister layer 110 and outer tank layer 130, inner canister layer 110 is cast iron layer；Into
Waterpipe 210 is disposed through on outer tank layer 130, and water inlet line 210 is connected with cavity layer 120, and outlet conduit is through setting
In on outer tank layer 130, outlet conduit is connected with cavity layer 120, and cooling water enters cavity layer 120, water outlet by water inlet line 210
Pipeline includes upper water-out pipeline 221 and lower discharging tube road 222, the cooling water in cavity layer 120 by upper water-out pipeline 221 and it is lower go out
Waterpipe 222 is discharged.Specifically cooling procedure is：Before high-temperature slag is packed into slag ladle tank body 100, pass through water inlet line
210 constantly inject cooling water into cavity layer 120, and then cooling water flows out cavity layer 120 by outlet conduit, so that entirely
In the process full of the cooling water constantly flowed in cavity layer 120；Because inner canister layer 110 is cast iron layer, thermal conductivity is preferable, works as slag
After tank 100 is packed into the high-temperature slag from blast furnace, the heat of high-temperature slag is easy to conduct outward by inner canister layer 110, empty
Cooling water in cavity layer 120 absorbs under the action of heat transfer and comes from 110 heat of inner canister layer, then is made by the flowing of cooling water
It is taken away with by heat, realizes the rapid cooling of inner canister layer 110；In the inside of inner canister layer 110, the slag close to inner canister layer 110 exists
Rapid cooling acts on lower quick solidification, and then can rapidly cool to form skull along the inner wall of inner canister layer 110, and quickly to be formed
Skull separated with inner canister layer 110, prevent high-temperature slag from bonding with slag ladle tank body 100.It is worth noting that coming from blast furnace
High-temperature slag again can abbreviation blast furnace slag.
The above-mentioned skull by being cooled into, can keep the temperature the high-temperature slag of liquid, and interior to a certain extent
Tank layer 110 is cast iron layer, and the bonding coefficient between cast iron and high-temperature slag is smaller, to be not easy between inner canister layer 110 and skull
It bonds, and then facilitates skull to be separated during pouring out with inner canister layer 110 in subsequent high temperature slag；But inner canister layer
The skull formed between 110 inner walls and high-temperature slag also unsuitable blocked up, the blocked up reduction that will lead to blast furnace utilization rate of skull, and
And blocked up skull is difficult to be crushed, and then influences the quick progress of blast furnace slag recycling production.
It is worth noting that the wall thickness of the inner canister can body section 111 of inner canister layer 110 is gradually reduced from top to bottom, inner canister can body
The wall thickness at 111 top of section is twice of 111 bottom wall thickness of inner canister can body section, and the wall thickness of the inner canister tank bottom section 112 of inner canister layer 110 is
It is uniformly arranged, and the wall thickness of inner canister tank bottom section 112 is identical as 111 bottom wall thickness of inner canister can body section, and then improves service life.
In the height direction, the high-temperature slag in inner canister layer 110 is remoter apart from liquid level, and the radiating condition of high-temperature slag is poorer, so
The wall thickness of inner canister can body section 111 from top to bottom can its thickness of reduction appropriate so that the high-temperature slag of lower section obtains faster
It is cooling, improve the radiating condition of 111 each section high-temperature slag of inner canister can body section of inner canister layer 110；At the same time, inner canister layer 110
Inner canister tank bottom section 112 be it is arc-shaped so that the radiating condition base of the 112 internal high temperature slag of inner canister tank bottom section of inner canister layer 110
This is identical, can be by the outside Homogeneouslly-radiating of inner canister tank bottom section 112, so the wall thickness of the inner canister tank bottom section 112 of inner canister layer 110 can
To be uniformly arranged.
In addition, the thickness of the can body section cavity 121 of cavity layer 120 is gradually reduced from top to bottom, in one side inner canister layer 110
High-temperature slag radiating condition with height reduce and be deteriorated；On the other hand, cooling water is in the case where same traffic, flow area
Its smaller flow velocity is faster, and then can accelerate the speed that cooling water takes away heat.The thickness of the can body section cavity 121 of cavity layer 120
Degree is gradually reduced from top to bottom can make cooling water flow velocity in lower layer's cavity layer 120 accelerate, and then reinforce lower layer's cavity layer 120
To the cooling effect of inner canister layer 110.In addition, the thickness of tank bottom section cavity 122 is uniformly arranged, thickness is not more than can body section cavity
Thickness at 121 lowermost ends, the thickness of tank bottom section cavity 122 is equal to the thickness at 121 lowermost end of can body section cavity in the present embodiment
Degree, so that the cooling water flowed in can body section cavity 121 uniformly cools down the high-temperature slag of inner canister tank bottom section 112 in inner canister layer 110,
High-temperature slag forms uniform skull in inner canister tank bottom section 112, when high-temperature slag is poured from slag ladle tank body 100, bottom
The skull in portion easier can be separated with inner canister tank bottom section 112；Because of the upward heat sink strip of high-temperature slag of inner canister tank bottom section 112
Part is worst, and skull formation difficulty is larger, so the thickness setting of tank bottom section cavity 122 is smaller, to accelerate the flowing of cooling water
Speed strengthens the cooling effect of inner canister tank bottom section 112 in inner canister layer 110, promotes 110 inner wall of inner canister layer and high temperature melting at the position
The formation of skull between slag.
The water inlet of water inlet line 210 is set to the connection of inner canister can body section 111 and inner canister tank bottom section 112 in the present embodiment
Place, cooling water sprays into cavity layer 120 from the junction, in inner canister layer 110, inner canister can body section 111 and inner canister tank bottom section 112
Junction because turning back larger, the biggish high-temperature slag of viscosity is easy to remain on the junction, by water inlet line 210 and inner canister
The junction of can body section 111 and inner canister tank bottom section 112 is correspondingly arranged, and can improve the cooling effect of the junction position high-temperature slag
Fruit promotes the quick formation of the junction skull, so that inner canister can body section 111 and 112 junction of inner canister tank bottom section be not after slag
Easily residual high-temperature slag.
It is worth noting that the angle between water inlet tube hub line 211 and 111 outer wall of inner canister can body section is a, in water inlet pipe
The angle of heart line 211 and 112 outer wall of inner canister tank bottom section between the tangent line of junction is b, and a > b, outside inner canister tank bottom section 112
The angle of wall and vertical direction is c, in the present embodiment, obtains the relational expression by simulation and multiple actual fabrication experience：a
The size of=b+0.12 × c, a and b angle is calculated by the formula, and water inlet tube hub line 211 passes through according to above-mentioned angle
Arrangement, so that the water inlet direction of water inlet line 210 is tilted slightly offset towards the direction of 111 outer wall of inner canister can body section.In the effect of gravity
Under, have the tendency that moving downward by the cooling water that water inlet line 210 enters cavity layer 120, to avoid outside inner canister can body section 111
The cooling that cannot obtain cooling water at wall in time, by the water inlet direction of water inlet line 210 slightly offset towards 111 outer wall of inner canister can body section
Direction inclination allows more cooling waters to movement at 111 outer wall of inner canister can body section, to the inner canister can body of inner canister layer 110
High-temperature slag in section 111 is cooled down in time, promotes the shape of skull between 110 inner wall of inner canister layer and high-temperature slag at the position
At.Above-mentioned water inlet line 210 is provided with 4 at least provided with 3, in the present embodiment, uniform along 100 periphery of slag ladle tank body
Distribution.
It should be noted that linkage section 140 is provided at the top of slag ladle tank body 100, between inner canister layer 110 and outer tank layer 130
It is fixedly connected by linkage section 140, the distance between top and the top of slag ladle tank body 100 of cavity layer 120 are h, the range of h
For 60-120mm, h=100mm in the present embodiment, because the high-temperature slag radiating condition in inner canister layer 110 close to top is preferable,
So a certain distance is arranged between the top and slag ladle tank body 100 of cavity layer 120, the cooling water pair in cavity layer 120 is avoided
High-temperature slag close to 110 top of inner canister layer is cooled down, and is prevented on 110 inner wall of inner canister layer at 110 top of inner canister layer and molten
Blocked up skull is formed on slag liquid face.
In the present embodiment, outlet conduit includes upper water-out pipeline 221 and lower discharging tube road 222, wherein upper water-out pipeline 221
It is set to the top of outer tank layer 130, lower discharging tube road 222 is set to the bottom of outer tank layer 130.Upper water-out pipeline 221 is set to
The top of outer tank layer 130, it is ensured that the cooling water of flow regime cools down inner canister can body section 111, it is worth mentioning at this point that,
The distance between top of upper water-out pipeline 221 and cavity layer 120 is 10-20mm, upper water-out pipeline 221 and sky in the present embodiment
The distance between top of cavity layer 120 is 15mm；When cooling water enters the cavity layer 120 of this section of distance, mobility is poor to be led
It causes its thermal conductivity poor, and then reduces cooling effect of the cooling water to the high-temperature slag close to 110 top of inner canister layer, avoid top
Slag forms blocked up skull.
Lower discharging tube road 222 is set to the bottom of outer tank layer 130, on the one hand, can guarantee the cooling water pair of flow regime
Inner canister tank bottom section 112 is cooled down, so that forming certain thickness skull inside the inner canister tank bottom section 112 of inner canister layer 110；It is another
Aspect, it is empty when the cooling water level decline in cavity layer 120 when lower discharging tube road 222 is set to the bottom of outer tank layer 130
It, can be first in the inner canister layer 110 to top with the gas heat insulating layer for sequentially forming no-cooling-water from top to bottom in cavity layer 120
High-temperature slag is kept the temperature, and the preferable upper layer high-temperature slag of radiating condition is avoided to form blocked up slag blanket；Lower layer in inner canister layer 110
High-temperature slag can continue cooling a period of time so that the poor lower layer's high-temperature slag of cooling condition continuously forms skull, from
And promote the homogenization of skull formation thickness.
Need to illustrate when：The cooling system of cooling treatment is：
(1) when 0-5min, the flow of cooling water is Q1, and the time is counted since high-temperature slag pours into slag ladle tank body 100；
(2) when 5-10min, the flow of cooling water is Q2, Q2=kQ1, and k value is 0.2-0.3, and in the present embodiment, k is taken
Value 0.25；
The flow of cooling water controls the flow of cooling water according to above-mentioned cooling system, can protect slag ladle tank body 100,
Extend the service life of slag ladle tank body 100.
The process of isothermal holding is：Close water inlet line 210 after starting isothermal holding, the cooling water in cavity layer 120 by
Lower discharging tube road 222 is discharged, and gassy in cavity layer 120 at this time, cavity layer 120 forms gas interlayer, although inner canister layer
110 is preferable for cast iron layer thermal conductivity, but the thermal conductivity for being now filled with the cavity layer 120 of gas is poor, can prevent major part
Heat continue from inner canister layer 110 outward conduct, to realize the insulation effect of cavity layer 120, avoid 110 inner wall of inner canister layer
Blocked up skull is formed, and then forms the skull of suitable thickness；The mobility for guaranteeing high-temperature slag facilitates falling for high-temperature slag
Out, the utilization rate of blast furnace slag is improved, in addition the good mobility of blast furnace slag can allow blast furnace slag to obtain better recycling production
Processing；By the heat preservation to high-temperature slag, the sensible heat of blast furnace slag is also made to be fully used, avoids blast-furnace cement sensible heat resource
Waste.
Embodiment 2
In conjunction with Fig. 3, the basic content of the present embodiment with embodiment 1, the difference is that：It is set on the inner wall of outer tank layer 130
It is equipped with outer tank insulating layer 131, when slag ladle tank body 100, which completes cooling procedure, carries out insulating process, outer tank insulating layer 131 can be into
One step improves slag ladle tank body 100 to the heat insulation effect of high-temperature slag.The making material of outer tank insulating layer 131 is clay brick or height
Aluminium brick is magnesia, and the material of outer tank insulating layer 131 is clay brick in the present embodiment.
Embodiment 3
The basic content of the present embodiment with embodiment 1, the difference is that：The tip height of linkage section 140 is along slag ladle
Along being gradually increased to the direction of outer in body 100, the tip section of linkage section 140 be it is arc-shaped, circular arc direction upward so that slag
Tank 100 carries out the when of falling slag, high-temperature slag can by arc-shaped guiding role outward fall slag, avoid the biggish height of viscosity
Warm slag is bonded on 100 outer wall of slag ladle tank body during pouring out, and is led to slag ladle tank body 100 and is difficult between the slag car clear
Reason, and reduce the loss amount of blast furnace slag.
Embodiment 4
According to chinese national standard " mineral wool and its development test method-first part：General provisions (GB-T5480.1-
" and " the-the 6 part of mineral wool and its development test method 2004)：The regulation of acidity coefficient (GB-T5480.6-2004) ", according to
The chemical component (mass fraction) of domestic garbage cinder glass, is calculated the acidity coefficient of lime-ash glass, i.e.,：Mk=(wSiO2
+wAl2O3)/(wCaO+wMgO).Control standard is produced according to domestic and international ore-rock cotton, the acidity coefficient of general mineral wool is 1.0-
1.47, the acidity coefficient of rock wool is 1.4-2.0.
A kind of method using blast-furnace slag production mineral wool of the invention, specific step is as follows：
Step 1：Tap cinder transhipment
A kind of method for the blast furnace slag hot-loading and hot-conveying being previously mentioned using above-described embodiment ships high-temperature slag, passes through
High-temperature slag is transported to mineral wool workshop by slag ladle and carriage；
Step 2：Electro-smelting
Clinker is added into electric melting furnace, while electrode is powered, and is heated using the electric conductivity of slag；
According to the acidity coefficient of slag, 7-15% acidic excipient is added into electric furnace between 0.9-1.1 for acidity coefficient,
It adjusts magnitude of current control slag temperature and reaches 1500-1560 DEG C, by being blown into N in heating process2Slag is stirred, melt is made
Homogenizing；And slag quenched, after homogenizing is passed through into the output flow of electric melting furnace to electric mantle heater；
Acidity coefficient MK=(SiO2+Al2O3)/(CaO+MgO), SiO2、Al2O3, CaO, MgO respectively represent this in substance kind
The mass percent of ingredient.
Step 3：Electric furnace heating
Clinker after melting is kept the temperature in electric mantle heater, is controlled temperature at 1550-1600 DEG C, will be melted in electric mantle heater
Slag leads to centrifugation fiberizer with chute through slag notch；
Step 4：Fiber is made in centrifugation
In centrifugation fiberizer, under the action of the centrifugal force, slag is dispersed and is drawn into fiber clinker；Molding fiber exists
Base cotton is formed under wind action in conjunction with binder, it is mineral wool that glomeration material, which is prepared, by pelletizer in base cotton fiber.
Slag is dispersed and is drawn into fiber.Molding fiber (wherein glues under wind action with binder or dust laying oil
Tie agent, that is, phenolic resin, dust laying oil, that is, 32# turbine oil) compacting devices are blowed to together, compacting devices working principle is：Slag is made
It being attached in collection cotton strip at after fiber with air-flow, integrates cotton strip as metal mesh, triangle posture is rotatable, centrifuge side is being rushed at,
After fiber is attached to metal net surface, fiber and collection cotton strip are peeled away by high-pressure blast when rotating to the other side with collection cotton strip,
Form blank-base cotton of mineral wool product.
The present invention is described in detail above in conjunction with specific exemplary embodiment.It is understood, however, that can not take off
It is carry out various modifications in the case where from the scope of the present invention being defined by the following claims and modification.Detailed description and drawings
Should be to be considered only as it is illustrative and not restrictive, if there is any such modifications and variations, then they all will
It falls into the scope of the present invention described herein.In addition, Development Status and meaning that background technique is intended in order to illustrate this technology,
It is not intended to limit the present invention or the application and application field of the invention.
Claims (8)
1. a kind of method of blast furnace slag hot-loading and hot-conveying, it is characterised in that：High-temperature slag is packed into the slag ladle tank body (100) of slag ladle and carriage
It is interior, the high-temperature slag in slag ladle tank body (100) is cooled down, then the high-temperature slag in slag ladle tank body (100) is protected
Temperature, and high-temperature slag is transported by slag ladle and carriage.
2. a kind of method of blast furnace slag hot-loading and hot-conveying according to claim 1, it is characterised in that：Specific cooling, heat preservation step
Suddenly it is：
Step 1: cooling treatment
Before slag ladle tank body (100) are packed into high-temperature slag, the injection cooling into cavity layer (120) by water inlet line (210)
Water, then high-temperature slag is fitted into slag ladle tank body (100), cooling water cools down the high-temperature slag in slag ladle tank body (100),
So that high-temperature slag rapidly cools to form skull on inner canister layer (110) inner wall of slag ladle tank body (100)；
Step 2: isothermal holding
After high-temperature slag forms skull on inner canister layer (110) inner wall of slag ladle tank body (100), outlet conduit is by cavity layer
(120) the cooling water emptying in, the interior gassy of cavity layer (120) form gas interlayer, and cavity layer (120) is to inner canister layer
(110) high-temperature slag in carries out isothermal holding.
3. a kind of method of blast furnace slag hot-loading and hot-conveying according to claim 2, it is characterised in that：Water inlet line (210)
Water inlet is set to the junction of inner canister can body section (111) and inner canister tank bottom section (112), and cooling water sprays into cavity from the junction
In layer (120).
4. a kind of method of blast furnace slag hot-loading and hot-conveying according to claim 2, it is characterised in that：Outlet conduit include it is upper go out
Waterpipe (221) and lower discharging tube road (222), the cooling water in cavity layer (120) is by upper water-out pipeline (221) and lower discharging tube
Road (222) discharge.
5. a kind of method of blast furnace slag hot-loading and hot-conveying according to claim 2, it is characterised in that：Start to keep the temperature in step 2
Water inlet line (210) are closed after processing, the cooling water in cavity layer (120) is discharged by lower discharging tube road (222), cavity layer
(120) gas interlayer is formed.
6. a kind of method of blast furnace slag hot-loading and hot-conveying according to claim 2, it is characterised in that：Step 1: cooling treatment
Cooling system be：
(1) when 0-5min, the flow of cooling water is Q1；
(2) when 5-10min, the flow of cooling water is Q2, and Q2=kQ1, k value is 0.2~0.3.
7. a kind of method of blast furnace slag hot-loading and hot-conveying according to claim 1-6, it is characterised in that：Slag ladle tank body
(100) include inner canister layer (110) and outer tank layer (130), be provided with cavity layer between inner canister layer (110) and outer tank layer (130)
(120)。
8. a kind of method of blast furnace slag hot-loading and hot-conveying according to claim 1-6, it is characterised in that：The inner canister
Layer (110) is cast iron layer.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985697A (en) * | 2010-11-10 | 2011-03-16 | 攀钢集团钢铁钒钛股份有限公司 | Electric furnace charging process for high-titanium blast furnace slag carbonization |
| CN204162732U (en) * | 2014-08-28 | 2015-02-18 | 天津市裕盛液压机械有限公司 | A kind of slag ladle |
-
2018
- 2018-07-19 CN CN201810808851.7A patent/CN108863045A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985697A (en) * | 2010-11-10 | 2011-03-16 | 攀钢集团钢铁钒钛股份有限公司 | Electric furnace charging process for high-titanium blast furnace slag carbonization |
| CN204162732U (en) * | 2014-08-28 | 2015-02-18 | 天津市裕盛液压机械有限公司 | A kind of slag ladle |
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Application publication date: 20181123 |