CN106830720B - A kind of artificial stone and preparation method thereof - Google Patents
A kind of artificial stone and preparation method thereof Download PDFInfo
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- CN106830720B CN106830720B CN201510883261.7A CN201510883261A CN106830720B CN 106830720 B CN106830720 B CN 106830720B CN 201510883261 A CN201510883261 A CN 201510883261A CN 106830720 B CN106830720 B CN 106830720B
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Abstract
The invention discloses a kind of artificial stones and preparation method thereof.This method comprises: the first coal charge and the first gasifying agent are carried out gasification reaction in gasification unit, molten state slag liquid and raw gas are obtained；The molten state slag liquid being discharged from the gasification unit is directly cast as artificial stone.This method may be implemented for the cinder that coal gasification generates to be subject to waste utilization production artificial stone, and reduce cinder content in raw gas, mitigate the pressure of subsequent gas purification.
Description
Technical field
The present invention relates to a kind of preparation methods of artificial stone, and the artificial stone made of this method.
Background technique
Artificial stone production is divided into two kinds of production methods at present, and one kind is room temperature or temperature production method, and one kind is that high temperature is raw
Production method.The former is using organic gelling agent such as unsaturated polyester resin and inorganic gel agent, such as magnesia, and addition is some not
With auxiliary agents such as fineness filler, pigment and glass fibres, it is made through processes such as mixing, stirring, casting, gelling, solidifications a kind of new
Type builds ornaments, such as perspex steel or unorganic glass steel product.
CN102898070A discloses biology base artificial quartz stone and its production technology.Artificial quartz stone composition includes quartz
Sand, silica flour, solidified resin, curing agent, lignin, crosslinking agent, coupling agent, promotor, pigment and defoaming agent.It is specifically disclosed
Production method includes: that (1) mixes lignin powder with each component according to recipe ingredient, is stirred under vacuum or normal pressure
It is even；(2) above-mentioned mixed material is transferred in vacuum press, under vacuum conditions by mixture vibrating compacting, is put into baking
Primary solidification is carried out in case at a certain temperature, then increases after temperature carries out and solidifies again；(3) it demoulds, fixed thick, polishing, cutting
Finished product.
CN103396039A discloses a kind of Novel rostone inter-platform basin and its production method.The preparation of Novel rostone inter-platform basin
Raw material includes unsaturated polyester resin, powdered whiting, initiator, promotor, stock white and curing agent.Specifically disclosed method
Include: that (1) selects glass fibre and high-strength polyester resin that mold is made by mixing, is cleaned up with mold scavenger specially；(2)
Mold is uniformly smearing one layer of release agent in mould inner surface using preceding, then the 8376 surface layer polyester tree of even application in mold
Rouge；(3) internal filler material is made, unsaturated polyester resin and heavy calcium carbonate are put in proportion into de-airing mixer,
And stock white, promotor, initiator is added, it stirs under vacuum conditions；(4) it is equal to pass through constant speed pump before entering mold for filler material
It is even that curing agent is injected into spice conveyance conduit；(5) filler material after stirring is poured into mold, mold strip is entered into together vacuum tank
Deaeration, then to enter temperature control curing quickly pre-hardening for vacuum tank out；(6) product is placed on baking rack, is fixed, be sent into high temperature
Baking production line carries out hot setting；(7) cutting and punching of product are carried out；(8) trimming polishing；(9) test package.
CN103204661A discloses high-impact artificial quartz plate and its production technology.It includes stone that the plate, which prepares raw material,
Sand, silica flour, adhesive, Iron-ore Slag, rock wool fibers, calcining bauxite, calcium sulfate crystal whiskers, waterglass, flyash, isopropyl
Distearyl oxygroup Aluminate and pigment.Specifically disclosed method includes: that (1) does calcium sulfate crystal whiskers, calcining bauxite respectively
It is added in high-speed mixer after dry, isopropyl stearic acid oxygen base aluminum acid ester is added, with 500- at 110-120 DEG C
The speed of 1000rpm is stirred 20-30min, add waterglass continue stir 5-10min after, be added flyash with
4-6min is blended in the speed of 1500-2000rpm, is sent into pelletizer and is granulated, and size controlling is in 2-4mm to get flyash cladding
Particle, drying, for use；(2) above-mentioned obtained flyash coated particle is added in blender with remaining each raw material and is stirred evenly, no
Dead angle is stayed, in conjunction with the size of granularity, 0-1500rpm is adjusted in mixing speed, and material terminates through adjusting than stirring in blender
Afterwards, enter mixing disk side, material is spilt when turning, mix material further uniformly, be then fed into blender and be sufficiently mixed again, material
More uniform, pattern is uniformly, clear, fidelity is high；(3) material mixed is sent into beater some without stirring conglomeration
Material further break up, after breaing up, enter cloth in material distributing machine through electronic measurement, be then sent through in making sheet mould, by making sheet
Mould is sent into moulding press and is formed under vacuum, vibration, pressurization, and frequency 52-62Hz, pressing time 150-200s, pressure are suppressed
Power 1.5-3.0MPa, vacuum degree -100~-95Pa；(4) molding plate is sent into solidification case solidification, solidification temperature 80-90
DEG C, time 40-550min；(5) after plate solidification, Jing Dinghou, polishing deep processing processing obtain synthetic quartz slabstone
Material.
As can be seen that there is presently no the skills for directly carrying out the cinder generated in coal gasification course to be produced as artificial stone
Art.
Summary of the invention
The purpose of the present invention is to solve how that the cinder generated in coal gasification course and the progress of other waste residue materials is sharp
With the problem of, provide a kind of artificial stone and preparation method thereof.
To achieve the goals above, the present invention provides a kind of preparation methods of artificial stone, comprising: by the first coal charge and
One gasifying agent carries out gasification reaction in gasification unit, obtains molten state slag liquid and raw gas；It will be discharged from the gasification unit
The molten state slag liquid be directly cast as artificial stone.
The present invention also provides artificial stones made from a kind of the method for the present invention, and the artificial stone is according to GB/T9966.1-2001
The average compressive strength that regulation is tested is more than 100MPa.
Method provided by the invention organically combines coal gasification and artificial stone production, the melting for making full use of gasification furnace to be discharged
The high temperature sensible heat of state slag liquid is effectively performed cinder and other solid slags (such as flyash) production building materials, reduces solid waste pollution,
Turn waste into wealth.The content for reducing cinder in raw gas simultaneously, mitigates the usage amount and waste water of subsequent gas purification process fresh water
Yield.Method of the invention is surveyed in the product that slag liquid formation system finally obtains according to GB/T9966.1-2001 regulation
Examination, average compressive strength is more than 100MPa, is the artificial stone that a kind of performance meets or exceeds natural stone.The artificial stone is similar to igneous
Rock, intensity is larger, porous, has heat insulating function, can be used as external wall decorative brick or floor file brick；Also it can be used as refractory material,
Built for kiln etc..
In method provided by the invention, gasification reaction process is divided into secondary contact phase, can use the high temperature of raw gas
Thermal energy can use dry powder residue cooling again and reduce the cinder carried in raw gas, reduces when raw gas further cools down and grasps to useless pot
The influence of work, such as reduces the dross problem of useless pot operation, and mitigates the pressure of subsequent gas purification, and then reduce purification water
The output of amount and waste water.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the process flow chart of method for preparing artificial stone of the invention；
Fig. 2 is the schematic diagram of slag base circular-arc type continuous casting machine of the invention；
Fig. 3 is the schematic diagram of gasification unit in method of the invention.
Description of symbols
1- cinder ladle 2- tundish 3- crystallizer 4- secondary cooling zone
5- vibration device 6- slab 7- rollgang 8- cutting equipment
9- the drawing straightener
100- gasification unit 110- vaporizer 111- second nozzle 112- first jet
113- raw gas exports the outlet of 120- molten slag bath 121- third nozzle 122- slag liquid
123- communication port
Specific embodiment
Detailed description of the preferred embodiments below.It should be understood that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
The present invention provides a kind of preparation methods of artificial stone, as shown in Figure 1, by the first coal charge and the first gasifying agent in gas
Change in unit and carry out gasification reaction, obtains molten state slag liquid and raw gas；The molten state that will be discharged from the gasification unit
Slag liquid is directly cast as artificial stone.
In the present invention, gasification unit is not discharged in the slag charge that the molten state slag liquid Quench is solid, and is to maintain described
Then the molten state slag liquid is entered in slag liquid formation system and is cast as by the temperature flowing slag tap of molten state slag liquid
For artificial stone.
According to the present invention, this method further comprises: dry powder residue is passed through in Xiang Suoshu gasification unit, the dry powder residue is powder
Coal ash, calcium carbide production slag, blast furnace slag and/or gas washing in SA production waste residue, the ash fusion point of the dry powder residue are 1150 DEG C~1400 DEG C, are put down
Equal partial size is 0.01mm~1mm.
In the present invention, the dry powder residue obtained by other waste residues is further added, it both can be by other waste residues such as fine coal
The meltings such as ash, waste residue of sulfuric acid are that artificial stone is made in liquid, realize the utilization of other waste residues；The gasification unit row can also be reduced
The temperature of raw gas out.The dry powder residue can be not involved in gasification reaction.The characteristic of the dry powder residue mainly controls ash fusion point
And partial size, it can be by the way that molten state slag liquid be added after converting with the contact heat-exchanging of raw gas, to be conducive to subsequent casting
Molding procedure.
In the present invention, the gasified reverse is carried out the first coal charge, dry powder residue and the first gasifying agent are all passed through gasification unit
It answers, raw gas and molten state slag liquid is discharged from gasification unit, wherein molten state slag liquid enters slag liquid formation system and is cast as people
Make stone.
In the case of, according to the invention it is preferred to, the gasification reaction includes first by first gasifying agent and first coal
Material is once contacted, and raw gas and the molten state slag liquid are generated；Then the raw gas and the dry powder residue are carried out two
Secondary contact；Wherein, the raw gas is cooled down and reduces the dry coal slag carried in the raw gas by the dry powder residue, while described
The molten state slag liquid is added in the product that the dry powder residue is heated and formed by raw gas.
A preferred embodiment of the invention, as shown in figure 3, the gasification unit 100 includes 110 He of vaporizer
Molten slag bath 120, the molten slag bath are located at the lower section of the vaporizer and are connected to the vaporizer；The lower part of the vaporizer is set
Have and first coal charge and first gasifying agent are sprayed into first jet 112 inside the vaporizer, in first spray
The top of mouth is equipped with the second nozzle 111 sprayed into the dry powder residue inside the vaporizer；First coal charge and described
One gasifying agent sprays into inside the vaporizer from the first jet carries out the primary contact generation raw gas and described
Molten state slag liquid；The raw gas flows up and sprays into the dry slag inside the vaporizer from the second nozzle simultaneously
Powder carries out the secondary contact, so that the raw gas is cooled down and reduces the cinder amount of carrying, while the dry powder residue is added
Heat and the product formed the addition molten state slag liquid, into the molten slag bath.
In the present invention, the first jet and the second nozzle have multiple, can be set with uniform ring around the vaporizer
It sets.It is equipped with raw gas outlet 113 at the top of the vaporizer, it, can for the gasification unit to be discharged in obtained raw gas
Subsequent useless pot unit is arrived to provide.It is equipped with communication port 123 in the bottom of the vaporizer, it will be in the gas by the communication port
Change the molten state slag liquid that room obtains and is discharged into the molten slag bath.It is also provided with slag liquid outlet 122 in the bottom of the molten slag bath, is used
In slagging tap to subsequent slag liquid formation system.
In the present invention, the gasification unit can be gasification furnace, such as can be atmospheric gas fluidized gas producer (including coal charge
And coal slurry gasifier) or melt bath bed gasification furnace.First coal charge and first gasifying agent can share first spray
Mouth, such as first gasifying agent can be passed through in first coal charge, then together from described in first jet penetrating
In vaporizer.Controlling the indoor temperature of gasification is the gasification reaction temperature.
In the present invention, gasification furnace is also provided with tank level control system, temperature control system and cinder notch open and close control component.
The vaporizer and molten slag bath can use refractory liner or water-cooling wall, can also the two combination.
The gasification unit or preferred gasification furnace in the present invention increase compared with the prior art and are provided with described the
One nozzle, while eliminating the Quench component that the prior art is arranged in the communication port periphery.
In the present invention, first gasifying agent can be oxygen.First coal charge can for para bituminous coal or lignite and
The product that its semi-coke powder obtains after being milled.The average grain diameter of first coal charge can be 0.01~1mm.The dry powder residue
Average grain diameter can be 0.01~1mm.
In the case of, according to the invention it is preferred to, the gasification reaction further includes in the molten slag bath by the molten state slag
Liquid is contacted three times with the second gasifying agent, the second coal charge, and the molten state slag liquid and second coal charge is made to carry out slag gas
Change while maintaining the temperature of the molten slag bath.The principle of the slag gasification is by the second coal charge and the second gasifying agent (such as oxygen)
It sprays into molten slag bath, realizes gasification using the molten state slag liquid high temperature in molten slag bath；During slag gasification, described the
Two coal charges and the second gasifying agent, which spray into the molten state slag liquid, also has stirring action, controls the second coal charge and the second gasifying agent
The temperature of the adjustable molten slag bath of ratio.The molten slag bath is externally closed.
A preferred embodiment of the invention is used as shown in figure 3, the molten slag bath is additionally provided with third nozzle 121
In spraying into second gasifying agent and second coal charge into the molten state slag liquid, progress is described to be contacted three times.
The third nozzle can be preferably set on the side wall at the middle part of the molten slag bath, the third is more preferably set
Nozzle is in the tangential direction of the molten slag bath.The third nozzle can have multiple, can be set with uniform ring around the molten slag bath
It sets.
In the case of, according to the invention it is preferred to, the weight ratio of coal charge and the dry powder residue is 1:0.1~1:0.5.Guarantee to obtain
Product can be used as artificial stone use.
It should be noted that the additional amount of coal charge considers to add in first contact and third contact in the present invention
The total amount of the total amount of first coal charge and second coal charge that enter, i.e., described first coal charge and second coal charge with it is described
The weight ratio of dry powder residue is 1:0.1~1:0.5.Second coal charge can be identical as first coal charge, repeats no more.Into one
Step ground, in order to meet the composition requirement of finally obtained artificial stone, the weight of preferably described first coal charge and second coal charge
Than for 1:0.1~1:0.3.
In the case of, according to the invention it is preferred to, the dosage of gasifying agent is 300Nm3/ t coal~600Nm3/ t coal.I.e. relative to 1 ton
Coal needs gasifying agent 300Nm3~600Nm3.Guarantee the abundant gasification of coal charge, completes coal gasification and generate raw gas.Gasifying agent herein
Dosage be first gasifying agent and second gasifying agent dosage summation, as long as the dosage of specific first gasifying agent
First contact is completed, as long as the dosage of second gasifying agent completes the third contact.Second gas
Agent can be identical as second gasifying agent, repeats no more.
According to the present invention, the temperature control of the gasification reaction is higher than 100 DEG C of fusing point of the coal charge.Under preferable case,
The temperature of the gasification reaction is 1300 DEG C~1800 DEG C, preferably 1350 DEG C~1500 DEG C；The pressure of the gasification reaction is
0.1~0.5MPa；The temperature of the molten state slag liquid is 1250 DEG C~1700 DEG C, preferably 1350 DEG C~1400 DEG C.
According to the present invention, without Quench, direct high temperature enters institute to the molten state slag liquid of the gasification unit liquid discharge
Slag liquid formation system is stated to be processed.Under preferable case, the method for being cast as artificial stone includes slag liquid continuous casting or slag liquid
Molding.So-called continuous casting is by high temperature slag liquid through casting, condensation, cutting and the technique for directly obtaining injection.So-called molding is will be high
Warm slag liquid is poured into slag mould one by one, and castable gradually cools down in crystal growing furnace, and crystallisation solidification is forming block, after cooling
Block can be directly as building block, or as the raw material of sheet fabrication.
In the present invention, artificial stone will be cast as described in molten state slag liquid progress.It preferably, will be in the molten slag bath
Substance discharge carry out described in be cast as artificial stone.Substance in the molten slag bath preferably may include the first coal charge warp
The product and described second of molten state slag liquid, the dry powder residue through the second contact formation that first contact is formed
Coal charge contacts the product to be formed through the third.
In the case of, according to the invention it is preferred to, the process for being cast as artificial stone is implemented in slag liquid formation system, institute
Stating slag liquid formation system includes slag tap unit, slag base continuous casting unit and slag base processing unit, in the slag liquid formation system, institute
It states molten state slag liquid and room temperature is down to by 1250 DEG C~1700 DEG C with 10 DEG C/h~1200 DEG C/h rate of temperature fall.Preferably, by institute
It states the substance in molten slag bath and room temperature is down to by 1250 DEG C~1700 DEG C with 10 DEG C/h~1200 DEG C/h rate of temperature fall.In the slag
In liquid formation system, high temperature slag liquid is gradually cooled down, and the preferably described rate of temperature fall can be 60 DEG C/h~1200 DEG C/h, to avoid obtaining
The case where Engineered stone products' stress variation obtained is burst apart.
In a kind of preferred embodiment of the present invention, the slag liquid continuous casting uses circular-arc type continuous casting machine, including main equipment, auxiliary
Equipment, craftsmanship equipment and the most of composition of Automatic control and measure instrument four.As shown in Fig. 2, main equipment mainly wraps
It includes: casting equipment (cinder ladle carries equipment, tundish and its trolley), crystallizer and its vibration device, secondary cooling support guide
Device, throwing straightening equipment, slab cutting equipment etc..Ancillary equipment mainly include ejection and finishing equipment (roller-way, Blank drawing machine,
Cold bed etc.).Process equipment mainly includes baking of tundish device, lubrication of crystallizer device, water supply and water treatment facilities etc..Automatically
Control and detection instrument mainly include the measurement and display system of mold liquid level, process control and computer etc..
As shown in Fig. 2, by taking the molten state slag liquid as an example, the production procedure of the slag liquid continuous casting are as follows: by molten state slag liquid
One or a set of water cooling copper crystallizer 3 is continuously injected through tundish 2 by cinder ladle 1.The bottom of crystallizer 3 is by drawing base bar
Support is drawn base bar and is strictly sealed with 3 inner wall surrounding of crystallizer.The molten state slag liquid for injecting crystallizer 3 cool down strongly, rapidly
Form the initial slab with certain shapes and shell thickness；When the molten state slag liquid in crystallizer 3 is poured into certain altitude,
Start withdrawal straightening machine, while with 5 vibrating crystallizer 3 of vibration device, withdrawing roll, which is clamped, draws base bar with the initial slab of certain speed pull-out, warp
Secondary cooling zone 4 is crossed until forming the slab 6 solidified completely.Slab 6 is sloughed after the aligning of the drawing straightener 9 and draws blanking device, then
It is cut into cut lengths through cutting equipment 8, is sent by rollgang 7 to slab processing workshop and is further processed into different size building
Material.
In the present invention, the molten state slag liquid, the system that the substance in the preferably described molten slag bath is formed through the slag liquid
Product are tested through GB/T9966.1-2001 regulation, and average compressive strength meets the requirement of natural stone, can be determined as artificial
Stone.
According to the present invention, the raw gas generated through the gasification reaction, Ke Yiyong are also discharged from the gasification unit
In Fischer-Tropsch synthetic is prepared by Fischer-Tropsch synthesis.Under preferable case, as shown in Figure 1, this method further includes thick
The raw gas is passed through in useless pot unit in coal gas after-treatment system and carries out cooling, carried out only in gas purification unit
Change, carry out converting and carrying out in F- T synthesis unit Fischer-Tropsch synthesis in converter unit, F- T synthesis is obtained with production
Product.
In the present invention, the useless pot is waste heat boiler, to cool down for the raw gas to be carried out heat exchange as low temperature coal gas
Equipment.The useless pot can be in the surface overhead of the vaporizer, can also be with side, then using described in communicating pipe connection
Vaporizer.It is preferred that the temperature of the low temperature coal gas is 400 DEG C~200 DEG C.
It specifically can be for example, entering the useless pot unit above vaporizer by the raw gas that the vaporizer of gasification furnace generates, so
The obtained low temperature coal gas is passed through gas purification unit, such as scrubbing tower afterwards, with low temperature coal gas described in water washing, then from washing
The top discharge purification coal gas for washing tower, is discharged washes in the bottom of scrubbing tower.
The converter unit is used for the CO and H in coal gas2Ratio be tuned as being appropriate for Fischer-Tropsch synthesis, can be with
Using the method and apparatus of this field routine, repeat no more.The F- T synthesis unit is by CO and H2The synthesis gas of composition exists
Fischer-Tropsch synthesis is carried out in the presence of fischer-tropsch catalysts, the equipment that can use this field routine repeats no more.
According to the invention, it is further possible to realize energy utilization.Under preferable case, as shown in Figure 1, this method further includes in energy
Using the part coal gas for generating the cooling steam generated and the purification in system in combined combustion and steam turbine power unit
Middle carry out combined combustion and steam turbine power, and generate hot waste gas.The combined combustion and steam turbine power unit can be conventional for this field
The equipment used, such as steam turbine and gas turbine.
In the case of, according to the invention it is preferred to, as shown in Figure 1, this method further includes useless using the heat in feed system
Gas by raw coal through coal be milled unit and by waste residue through waste residue milling unit grind respectively, respectively obtain first coal charge,
Second coal charge and the dry powder residue, and with nitrogen or CO2It is carrier gas respectively through pneumatic conveying unit transportation to the gasification
Unit.The coal milling unit, waste residue milling unit can be equipment commonly used in the art, as long as grinding is expired
The coal charge of sufficient this method and the average grain diameter of dry powder residue, such as can be 0.01mm~1mm with average grain diameter.The pneumatic transporting
Sending unit can be equipment commonly used in the art, such as three storehouses pump, and are made of normal pressure feed bin, transformation storehouse and material issuance storehouse.
In the present invention, air-separating plant can be set and be used to provide the oxygen as gasifying agent for method of the invention,
With the nitrogen for pneumatic conveying unit.Air-separating plant can be equipment commonly used in the art.
The present invention also provides artificial stones made from a kind of the method for the present invention, and the artificial stone is according to GB/T9966.1-2001
The average compressive strength that regulation is tested is more than 100MPa.
In the present invention, tested in the product that slag liquid formation system finally obtains according to GB/T9966.1-2001 regulation,
Average compressive strength is more than 100MPa, is the artificial stone that a kind of performance meets or exceeds natural stone.It is preferred that average compressive strength is
100~120MPa.
The composition of the artificial stone may include aluminium oxide, silica, calcium oxide, magnesia, iron oxide, potassium oxide,
Sodium oxide molybdena etc. further can determine that the artificial stone contains igneous rock ingredient according to GB/T 17412.1-1998, such as can be
Granites (Granite), rhyolite (Rhyolite), diabase (Diorite), andesite (Andesite), brightness feldspar
(Gabbro), basalt (Basalt) or peridotite (Peridotite) etc..
The present invention will be described in detail by way of examples below.
In following embodiment, according to GB/T9966.1-2001 " natural ornamental stone test method first part: dry, water
Saturation, compressive strength after Frozen-thawed cycled " the average compressive strength of product that is obtained by slag liquid formation system of regulation test:
Specifically, side length will be measured after the sample drying cooling of obtained product by standard requirements, measurement is accurate to
0.5mm calculates forced area；Then sample is placed in testing machine lower platen centre, at the uniform velocity application load is until sample is broken
It splits, records maximal destruction load；Test process maximal destruction power calculates compressive strength divided by compression area；Using Jinan institution of higher learning machine
The digital display hydraulic pressure testing machine of electric equipment Co., Ltd model YES-2000A is tested.
Raw coal in following embodiment is the coal from infrared ray light shine great Liu tower mine, and physical parameter is moisture content 10.21
Weight %, 11.83 weight % of content of ashes, 31.91 weight % of volatile matter content, fixed 46.05 weight % of carbon content.
Waste residue comes from Shenmu County's electric field, flyash, and group becomes 51 weight %SiO2, 17.7 weight %Al2O3, 6.21 weight %
Fe2O3, 12.64 weight %CaO, 1.96 weight %MgO, 4.59 weight %SO3, the average particle size of flyash is 0.1mm, heap ratio
Weight is 0.7 ton/m3, moisture content is 2 weight %.
Embodiment 1
This example demonstrates that the preparation method of artificial stone of the invention.
According to process shown in FIG. 1
(1) gasify: infrared ray light shine great Liu tower pit coal be ground to coal charge (average grain diameter 0.09mm) through coal milling unit,
Shenmu County's electric field flyash is ground to dry powder residue (average grain diameter 0.09mm) through waste residue milling unit, then respectively through pneumatic transporting
It send unit that gasification unit is added and contacts progress gasification reaction with oxygen, the addition total amount of coal charge is 500kg/km3Synthesis gas, dry slag
Powder additional amount is 100kg/km3Synthesis gas, the addition total amount of gasifying agent (oxygen) are 350Nm3/km3Synthesis gas, gasification reaction
Temperature is 1400 DEG C.
Gasification unit is gasification furnace, as shown in figure 3, the side wall in vaporizer is provided with the first coal charge of penetrating and the first gasification
The first jet of agent, and the second nozzle of dry powder residue is sprayed into, second nozzle is located above first jet.The lower section of vaporizer is
Molten slag bath is equipped with third nozzle in the middle part of molten slag bath for spraying into the second coal charge and the second gasifying agent into the slag liquid in molten slag bath.
Slag liquid temperature is 1400 DEG C.
(2) coal gas F- T synthesis: the raw gas uplink of gasification reaction discharge is cooled to by waste heat boiler (referred to as give up pot)
Low temperature coal gas, useless pot do not lead to the problem of dross, and the steam that useless pot generates send combined combustion and steam turbine power unit to generate electricity.It is low
Warm gas temperature is 230 DEG C.Low temperature coal gas is sent into scrubbing tower, is that purification coal gas is sent into converter unit, then send with water washing purification
Enter F- T synthesis unit and carries out Fischer-Tropsch synthesis production diesel oil；Wherein slurry amount is reduced.
(3) artificial stone processed: the slag liquid discharge in molten slag bath carries out slag liquid continuous casting, uses circular-arc type continuous casting machine, slag as shown in Figure 2
Liquid is continuously injected one or a set of water cooling copper crystallizer by cinder ladle through tundish.Crystalliser feet is held by drawing base bar
Support, draws base bar and strictly seals with crystallizer inner wall surrounding.After the slag liquid of injection crystallizer is cooled down strongly, quickly forming has
The slab of certain shapes and shell thickness.When slag liquid is poured into certain altitude in crystallizer, start withdrawal straightening machine, crystallizer is simultaneously
Vibration, withdrawing roll, which is clamped, to be drawn base bar and is pulled out with certain speed, until slab solidifies completely, obtains slag liquid continuous casting product.By slag liquid continuous casting
Product sampling is measured, and average compressive strength 100MPa is determined as with the artificial stone better than lithotome strength character.
Slag liquid continuous casting product is sloughed after aligning and draws blanking device, then is cut into cut lengths, is sent by rollgang to casting
Base processing workshop is further processed into different size construction material.
Embodiment 2
This example demonstrates that the preparation method of artificial stone of the invention.
According to process shown in FIG. 1
(1) gasify: infrared ray light shine benefit even tower pit coal is ground to coal charge (average grain diameter 1mm) through coal milling unit, it will
Waste residue of sulfuric acid is ground to ground-slag (average grain diameter 0.1mm) through waste residue milling unit, is then added respectively through pneumatic conveying unit
Gasification unit is contacted with oxygen carries out gasification reaction, and the addition total amount of coal charge is 500kg/km3Synthesis gas, dry powder residue additional amount are
100kg/km3Synthesis gas, the addition total amount of gasifying agent (oxygen) are 400Nm3/km3Synthesis gas, the temperature of gasification reaction are 1350
℃。
Gasification unit is gasification furnace, as shown in figure 3, the side wall in vaporizer is provided with the first coal charge of penetrating and the first gasification
The first jet of agent, and the second nozzle of dry powder residue is sprayed into, second nozzle is located above first jet.The lower section of vaporizer is
Molten slag bath is equipped with third nozzle in the middle part of molten slag bath for spraying into the second coal charge and the second gasifying agent into the slag liquid in molten slag bath.
Slag liquid temperature is 1300 DEG C.
(2) coal gas F- T synthesis: the raw gas uplink of gasification reaction discharge is cooled to by waste heat boiler (referred to as give up pot)
Low temperature coal gas, useless pot do not lead to the problem of dross, and the steam that useless pot generates send combined combustion and steam turbine power unit to generate electricity.It is low
Warm gas temperature is 210 DEG C.Low temperature coal gas is sent into scrubbing tower, is that purification coal gas is sent into converter unit, then send with water washing purification
Enter F- T synthesis unit and carries out Fischer-Tropsch synthesis production diesel oil；Wherein slurry amount is reduced.
(3) artificial stone processed: the slag liquid discharge in molten slag bath carries out slag liquid continuous casting, uses circular-arc type continuous casting machine, slag as shown in Figure 2
Liquid is continuously injected one or a set of water cooling copper crystallizer by cinder ladle through tundish.Crystalliser feet is held by drawing base bar
Support, draws base bar and strictly seals with crystallizer inner wall surrounding.After the slag liquid of injection crystallizer is cooled down strongly, quickly forming has
The slab of certain shapes and shell thickness.When slag liquid is poured into certain altitude in crystallizer, start withdrawal straightening machine, crystallizer is simultaneously
Vibration, withdrawing roll, which is clamped, to be drawn base bar and is pulled out with certain speed, until slab solidifies completely, obtains slag liquid continuous casting product.By slag liquid continuous casting
Product sampling is measured, and average compressive strength 110MPa is determined as with the artificial stone better than lithotome strength character.
Slag liquid continuous casting product is sloughed after aligning and draws blanking device, then is cut into cut lengths, is sent by rollgang to casting
Base processing workshop is further processed into different size construction material.
Embodiment 3
This example demonstrates that the preparation method of artificial stone of the invention.
According to process shown in FIG. 1
(1) gasify: gulf coal on infrared ray light shine is ground to coal charge (average grain diameter 0.01mm) through coal milling unit, it will be electric
Stone waste residue is ground to dry powder residue (average grain diameter 1mm) through waste residue milling unit, and gas then is added through pneumatic conveying unit respectively
Change unit and contact progress gasification reaction with oxygen, the addition total amount of coal charge is 450kg/km3Synthesis gas, ground-slag additional amount are
100kg/km3Synthesis gas, the addition total amount of gasifying agent (oxygen) are 400Nm/km3Synthesis gas, the temperature of gasification reaction are 1350
℃。
Gasification unit is gasification furnace, as shown in figure 3, the side wall in vaporizer is provided with the first coal charge of penetrating and the first gasification
The first jet of agent, and the second nozzle of dry powder residue is sprayed into, second nozzle is located above first jet.The lower section of vaporizer is
Molten slag bath is equipped with third nozzle in the middle part of molten slag bath for spraying into the second coal dust and the second gasifying agent into the slag liquid in molten slag bath.
Slag liquid temperature is 1300 DEG C.
(2) coal gas F- T synthesis: the raw gas uplink of gasification reaction discharge is cooled to by waste heat boiler (referred to as give up pot)
Low temperature coal gas, useless pot do not lead to the problem of dross, and the steam that useless pot generates send combined combustion and steam turbine power unit to generate electricity.It is low
Warm gas temperature is 230 DEG C.Low temperature coal gas is sent into scrubbing tower, is that purification coal gas is sent into converter unit, then send with water washing purification
Enter F- T synthesis unit and carries out Fischer-Tropsch synthesis production diesel oil；Wherein slurry amount is reduced.
(3) artificial stone processed: the slag liquid discharge in molten slag bath carries out slag liquid continuous casting, uses circular-arc type continuous casting machine, slag as shown in Figure 2
Liquid is continuously injected one or a set of water cooling copper crystallizer by cinder ladle through tundish.Crystalliser feet is held by drawing base bar
Support, draws base bar and strictly seals with crystallizer inner wall surrounding.After the slag liquid of injection crystallizer is cooled down strongly, quickly forming has
The slab of certain shapes and shell thickness.When slag liquid is poured into certain altitude in crystallizer, start withdrawal straightening machine, crystallizer is simultaneously
Vibration, withdrawing roll, which is clamped, to be drawn base bar and is pulled out with certain speed, until slab solidifies completely, obtains slag liquid continuous casting product.By slag liquid continuous casting
Product sampling is measured, and average compressive strength 120MPa is determined as with the artificial stone better than lithotome strength character.
Slag liquid continuous casting product is sloughed after aligning and draws blanking device, then is cut into cut lengths, is sent by rollgang to casting
Base processing workshop is further processed into different size construction material.
The cinder that the present invention can use coal gasification generation it can be seen from embodiment 1-3 mixes other waste residues production people
Stone is made, realizes the waste utilization of waste residue.
Claims (13)
1. a kind of preparation method of artificial stone, comprising:
First coal charge and the first gasifying agent are subjected to gasification reaction in gasification unit, obtain molten state slag liquid and raw gas；It will
The molten state slag liquid being discharged from the gasification unit is directly cast as artificial stone；
This method further comprises: it is passed through dry powder residue in Xiang Suoshu gasification unit,
Wherein, the gasification reaction includes first once being contacted first gasifying agent with first coal charge, is generated thick
Coal gas and the molten state slag liquid；Then the raw gas is subjected to secondary contact with the dry powder residue；Wherein, the dry powder residue
The raw gas is cooled down and reduces the dry coal slag carried in the raw gas, while the raw gas heats the dry powder residue
And the molten state slag liquid is added in the product formed.
2. according to the method described in claim 1, wherein, the dry powder residue be flyash, calcium carbide produce slag, blast furnace slag and/or
Gas washing in SA production waste residue, the ash fusion point of the dry powder residue are 1150 DEG C ~ 1400 DEG C, and average grain diameter is 0.01mm~1mm.
3. according to the method described in claim 1, wherein, the gasification unit includes vaporizer and molten slag bath, the molten slag bath
Positioned at the vaporizer lower section and be connected to the vaporizer；The lower part of the vaporizer is equipped with first coal charge and institute
It states the first gasifying agent and sprays into first jet inside the vaporizer, be equipped in the top of the first jet by the dry powder residue
Spray into the second nozzle inside the vaporizer；
First coal charge and first gasifying agent carry out described primary inside the first jet penetrating vaporizer
Contact, generates the raw gas and the molten state slag liquid；The raw gas is flowed up simultaneously sprays with from the second nozzle
Enter the dry powder residue inside the vaporizer and carry out the secondary contact, so that the raw gas is cooled down and reduces carrying
Cinder amount, while the dry powder residue is heated and the molten state slag liquid is added in the product formed, into the molten slag bath.
4. according to the method described in claim 3, wherein, the gasification reaction further includes in the molten slag bath by the melting
State slag liquid is contacted three times with the second gasifying agent, the second coal charge, melts the molten state slag liquid and second coal charge
Slag gasification, while maintaining the temperature of the molten slag bath.
5. being used for according to the method described in claim 4, wherein, the molten slag bath is equipped with third nozzle to the molten state slag
Second gasifying agent and second coal charge are sprayed into liquid, progress is described to be contacted three times.
6. according to the method described in claim 5, wherein, the weight of the total amount of the first coal charge and the second coal charge and the dry powder residue
Than for 1:0.1 ~ 1:0.5, the dosage summation of the first gasifying agent and the second gasifying agent is 300Nm3/ t coal ~ 600Nm3/ t coal.
7. method described in any one of -6 according to claim 1, wherein the temperature of the gasification reaction be 1300 DEG C ~
1800 DEG C, the pressure of the gasification reaction is 0.1 ~ 0.5MPa；The temperature of the molten state slag liquid is 1250 DEG C ~ 1700 DEG C.
8. method described in any one of -6 according to claim 1, wherein the method for being cast as artificial stone includes slag
Liquid continuous casting or slag liquid molding.
9. according to the method described in claim 8, wherein, the process for being cast as artificial stone is real in slag liquid formation system
It applies, the slag liquid formation system includes slag tap unit, slag base continuous casting unit and slag base processing unit；In the slag liquid formation system
In, the molten state slag liquid is down to room temperature by 1250 DEG C ~ 1700 DEG C with 10 DEG C/h~1200 DEG C/h rate of temperature fall.
10. method according to any one of claims 4 to 6, wherein this method further includes post-processing to be in raw gas
By the raw gas by carrying out cooling in useless pot unit, being purified in gas purification unit, in converter unit in system
In convert and carry out Fischer-Tropsch synthesis in F- T synthesis unit, Fischer-Tropsch synthetic is obtained with production.
11. according to the method described in claim 10, wherein, this method further includes in energy utility system by the cooling production
The part coal gas that raw steam and the purification generate carries out combined combustion and steam turbine power in combined combustion and steam turbine power unit,
And generate hot waste gas.
12. according to the method for claim 11, wherein this method further includes will using the hot waste gas in feed system
Raw coal is milled through coal and unit and grinds waste residue respectively through waste residue milling unit, respectively obtains first coal charge, described
Second coal charge and the dry powder residue, and with nitrogen or CO2It is carrier gas respectively through pneumatic conveying unit transportation to the gasification unit.
13. artificial stone made from a kind of method as described in any one of claim 1-12, the artificial stone is according to GB/
T9966.1-2001 provides that the average compressive strength tested is more than 100MPa.
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| CN114956777B (en) * | 2022-06-09 | 2023-03-14 | 山东新智能源科技有限公司 | Mineral melting direct casting crystallization micropore stone forming process |
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| JPS5542290A (en) * | 1978-08-04 | 1980-03-25 | Kloeckner Humboldt Deutz Ag | Method of and apparatus for continuously treating molten sulfurrcontained slag |
| CN101020968A (en) * | 2006-12-29 | 2007-08-22 | 金川集团有限公司 | Process of comprehensively utilizing high temperature nickel smelting slag |
| CN102249567A (en) * | 2010-09-27 | 2011-11-23 | 山东焦化集团有限公司 | Reduced stone raw material production method utilizing melting slag |
| CN102549369A (en) * | 2009-09-30 | 2012-07-04 | 三菱重工业株式会社 | Slag discharge system |
| CN104313211A (en) * | 2014-10-29 | 2015-01-28 | 唐山国丰钢铁有限公司 | Method for directly producing building brick by fusing blast furnace slags |
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|---|---|---|---|---|
| JPS5542290A (en) * | 1978-08-04 | 1980-03-25 | Kloeckner Humboldt Deutz Ag | Method of and apparatus for continuously treating molten sulfurrcontained slag |
| CN101020968A (en) * | 2006-12-29 | 2007-08-22 | 金川集团有限公司 | Process of comprehensively utilizing high temperature nickel smelting slag |
| CN102549369A (en) * | 2009-09-30 | 2012-07-04 | 三菱重工业株式会社 | Slag discharge system |
| CN102249567A (en) * | 2010-09-27 | 2011-11-23 | 山东焦化集团有限公司 | Reduced stone raw material production method utilizing melting slag |
| CN104313211A (en) * | 2014-10-29 | 2015-01-28 | 唐山国丰钢铁有限公司 | Method for directly producing building brick by fusing blast furnace slags |
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Address after: 100011 Beijing Dongcheng District, West Binhe Road, No. 22 Patentee after: CHINA ENERGY INVESTMENT Corp.,Ltd. Patentee after: Beijing low carbon clean energy research institute Address before: 100011 Shenhua building, 22 West Binhe Road, Dongcheng District, Beijing Patentee before: SHENHUA GROUP Corp.,Ltd. Patentee before: Beijing low carbon clean energy research institute |