CN106830720A - 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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- CN106830720A CN106830720A CN201510883261.7A CN201510883261A CN106830720A CN 106830720 A CN106830720 A CN 106830720A CN 201510883261 A CN201510883261 A CN 201510883261A CN 106830720 A CN106830720 A CN 106830720A
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Abstract
The invention discloses a kind of artificial stone and preparation method thereof.The method includes：First coal charge and the first gasifying agent are carried out into gasification reaction in gasification unit, molten state slag liquid and raw gas is obtained；The molten state slag liquid discharged from the gasification unit is directly cast as artificial stone.The method can be realized for the cinder that coal gasification is produced being subject to twice laid production artificial stone, and reduce cinder content in raw gas, mitigate the pressure of follow-up gas purification.
Description
Technical field
The present invention relates to a kind of preparation method of artificial stone, and the artificial stone being made up of the method.
Background technology
Artificial stone production is divided into two kinds of production methods at present, and one kind is normal temperature or temperature production method, one kind
It is high temperature production method.The former is to use organic gelling agent such as unsaturated polyester resin, and inorganic gel agent,
Such as magnesia, the auxiliary agents such as some different fineness filler, pigment and glass fibres are added, it is blended, stir
The operation such as mix, pour into a mould, being gelled, solidifying and being made a kind of novel building ornaments, such as perspex steel or inorganic
Fibre glass product manufacture.
CN102898070A discloses bio-based artificial quartz in lump and its production technology.Artificial quartz in lump group
Into including quartz sand, silica flour, solidified resin, curing agent, lignin, crosslinking agent, coupling agent, rush
Enter agent, pigment and defoamer.Specifically disclosed production method includes：(1) will be wooden according to recipe ingredient
Plain powder mixes with each component, is uniformly mixed under vacuum or normal pressure；(2) will be above-mentioned mixed
Material is transferred in vacuum press, under vacuum by mixture vibrating compacting, is put into baking oven one
Determine to carry out primary solidification at temperature, high-temperature is then risen again carries out solidify afterwards；(3) demoulding, fixed thick, throwing
Light, cutting finished product.
CN103396039A discloses a kind of Novel rostone inter-platform basin and its production method.Artificial stone
The preparing raw material of platform basin includes unsaturated polyester resin, powdered whiting, initiator, accelerator, white
Slurry and curing agent.Specifically disclosed method includes：(1) it is mixed from glass fibre and high-strength polyester resin
Close and make mould, cleaned up with mould scavenger specially；(2) mould is using preceding in mould inner surface
One layer of releasing agent of uniform application, then the top layer polyester resin of even application 8376 in mould；(3) make
Make internal inserts, unsaturated polyester resin and heavy calcium carbonate are put into de-airing mixer in proportion
It is interior, and stock white, accelerator, initiator are added, stir under vacuum conditions；(4) inserts enters
Curing agent is injected into spice conveyance conduit by the way that constant speed pump is uniform before mould；(5) by the filling after stirring
Material is poured into mould, and by mould strip with vacuum tank deaeration is entered, then going out vacuum tank, to enter temperature control curing fast
Fast initial set；(6) product is placed on baking rack, is fixed, feeding high-temperature baking streamline carries out height
Temperature solidification；(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 is prepared by the sheet material
Raw material includes quartz sand, silica flour, adhesive, Iron-ore Slag, rock wool fibers, calcining bauxite, sulfuric acid
Calcium pyroborate, waterglass, flyash, isopropyl stearic acid oxygen base aluminum acid ester and pigment.It is specifically disclosed
Method includes：(1) after calcium sulfate crystal whiskers, calcining bauxite being separately dried in addition high-speed mixer,
Isopropyl stearic acid oxygen base aluminum acid ester is added, with the speed of 500-1000rpm at 110-120 DEG C
Stirring mixing 20-30min, add waterglass continue stir 5-10min after, add flyash with
1500-2000rpm speed blending 4-6min, feeding comminutor in granulate, size controlling in 2-4mm,
Flyash coated particle is obtained final product, is dried, it is stand-by；(2) by above-mentioned prepared flyash coated particle and remainder
Each raw material stirs in adding mixer, does not stay dead angle, and with reference to the size of granularity, mixing speed can
Regulation 0-1500rpm, material after adjusting and terminating than stirring, enters batch mixing disk side, Bian Zhuanbian in mixer
Material is spilt, material is further uniformly mixed, be then fed into mixer and be sufficiently mixed again, material is more equal
Even, pattern is uniform, clear, fidelity is high；(3) the material feeding beater that will be mixed does not have some
The material for having stirring conglomeration is further broken up, and after breaing up, cloth in material distributing machine is entered through electronic measurement,
It is then sent through in making sheet mould, making sheet mould feeding moulding press is molded under vacuum, vibration, pressurization,
Compacting frequency 52-62Hz, press time 150-200s, pressure 1.5-3.0MPa, vacuum -100~-95Pa；
(4) the sheet material feeding solidification case solidification that will be molded, solidification temperature is 80-90 DEG C, and the time is 40-550min；
(5) after sheet material solidification terminates, processed through fixed thick, polishing deep processing, that is, artificial quartz stone plate is obtained.
As can be seen that directly carrying out being produced as there is presently no the cinder that will be produced in coal gasification course artificial
The technology of stone.
The content of the invention
The invention aims to solve how the cinder that will be produced in coal gasification course and other waste residues
A kind of problem that material is utilized, there is provided artificial stone and preparation method thereof.
To achieve these goals, the invention provides a kind of preparation method of artificial stone, including：By
One coal charge and the first gasifying agent carry out gasification reaction in gasification unit, obtain molten state slag liquid and rough coal
Gas；The molten state slag liquid discharged from the gasification unit is directly cast as artificial stone.
Present invention also offers artificial stone obtained in a kind of the inventive method, the artificial stone according to
GB/T9966.1-2001 specifies to test the average compressive strength for obtaining more than 100MPa.
Coal gasification and artificial stone are produced and organically combined by the method that the present invention is provided, and make full use of gasification fire grate
The high temperature sensible heat of the molten state slag liquid for going out, effectively carries out cinder and other solid slags (such as flyash)
Production building materials, reduce solid waste pollution, turn waste into wealth.The content of cinder in raw gas is reduced simultaneously, is mitigated
The usage amount and waste water yield of follow-up gas purification process fresh water.The method of the present invention is molded in slag liquid
The product that system is finally obtained is tested according to GB/T9966.1-2001 regulations, and average compressive strength surpasses
100MPa is crossed, 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, with heat insulating function, can be used as external wall decorative brick or floor file brick；Also can make
It is refractory material, is built by laying bricks or stones for kiln.
In the method that the present invention is provided, gasification reaction process is divided into secondary contact phase, it is possible to use rough coal
The high temperature heat of gas can utilize dry powder residue cooling to reduce the cinder carried in raw gas again, reduce raw gas
The influence operated to the pot that gives up when further cooling down, such as reduces the dross problem of useless pot operation, and after mitigation
The pressure of continuous gas purification, and then reduce the output of purification water consumption and waste water.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute the part of specification, with
Following specific embodiment is used to explain the present invention together, but is not construed as limiting the invention.
In accompanying drawing：
Fig. 1 is the process 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 the method for the present invention.
Description of reference numerals
1- cinder ladle 2- tundish 3- crystallizer 4- secondary cooling zones
5- vibrating device 6- strand 7- rollgang 8- cutting equipments
9- the drawing straighteners
100- gasification unit 110- vaporizer 111- second nozzle 112- first jets
The nozzle 122- slags liquid outlets of 113- raw gas outlet 120- molten slag baths 121- the 3rd
123- connected entrances
Specific embodiment
Specific embodiment of the invention is described in detail below.It should be appreciated that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
The invention provides a kind of preparation method of artificial stone, as shown in figure 1, by the first coal charge and first
Gasifying agent carries out gasification reaction in gasification unit, obtains molten state slag liquid and raw gas；Will be from the gas
The molten state slag liquid for changing unit discharge is directly cast as artificial stone.
In the present invention, not by the molten state slag liquid Quench for the slag charge of solid discharges gasification unit, but
The temperature flowing slag tap of the molten state slag liquid is kept, the molten state slag liquid is then entered into slag liquid
Carry out being cast as artificial stone in formation system.
According to the present invention, the method is further included：It is described to dry powder residue is passed through in the gasification unit
Dry powder residue is flyash, calcium carbide production slag, blast furnace slag and/or gas washing in SA production waste residue, the ash of the dry powder residue
Fusing point is 1150 DEG C~1400 DEG C, and average grain diameter is 0.01mm~1mm.
In the present invention, the dry powder residue obtained by other waste residues is further added, other can both be given up
The slag such as melting such as flyash, waste residue of sulfuric acid is made artificial stone for liquid, realizes the utilization of other waste residues；
The temperature that the gasification unit discharges raw gas can be reduced.The dry powder residue can be not involved in gasified reverse
Should.The characteristic of the dry powder residue be mainly control ash fusion point and particle diameter, can by with raw gas
Molten state slag liquid is added after contact heat-exchanging conversion, so that beneficial to follow-up casting operation.
In the present invention, institute is carried out the first coal charge, dry powder residue and the first gasifying agent are all passed through into gasification unit
Gasification reaction is stated, raw gas and molten state slag liquid are discharged from gasification unit, wherein molten state slag liquid enters slag
Liquid formation system is cast as artificial stone.
, according to the invention it is preferred in the case of, the gasification reaction is included first by first gasifying agent and institute
State the first coal charge once to be contacted, produce raw gas and the molten state slag liquid；Then by the rough coal
Gas carries out secondary contact with the dry powder residue；Wherein, the raw gas is lowered the temperature and reduced by the dry powder residue
The dry coal slag carried in the raw gas, while the product that the dry powder residue is heated and formed by the raw gas
Thing adds the molten state slag liquid.
A preferred embodiment of the invention, as shown in figure 3, the gasification unit 100 includes
Vaporizer 110 and molten slag bath 120, the molten slag bath be located at the vaporizer lower section and with the gasification
Room connects；Be provided with and spray into for first coal charge and first gasifying agent described by the bottom of the vaporizer
First jet 111 inside vaporizer, is provided with above the first jet and sprays into the dry powder residue
Second nozzle 112 inside the vaporizer；First coal charge and first gasifying agent are from described
One nozzle is sprayed into carries out once contact the generation raw gas and the melting inside the vaporizer
State slag liquid；The raw gas is flowed up and sprayed into inside the vaporizer with from the second nozzle simultaneously
The dry powder residue carries out the secondary contact, so that the raw gas is lowered the temperature and reduces the cinder of carrying
Amount, while the product that the dry powder residue is heated and is formed adds the molten state slag liquid, melts into described
Slag bath.
In the present invention, the first jet and the second nozzle have multiple, can be with uniform ring around described
Vaporizer is set.Raw gas outlet 113 is provided with the top of the vaporizer, for the rough coal that will be obtained
Gas discharges the gasification unit, can be provided to follow-up useless pot unit.Set in the bottom of the vaporizer
There is connected entrance 123, the molten state slag liquid that will be obtained in the vaporizer by the connected entrance enters described molten
Slag bath.Slag liquid outlet 122 is also provided with the bottom of the molten slag bath, for slagging tap to follow-up slag
Liquid formation system.
In the present invention, the gasification unit can be gasification furnace, for example, 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 gas
Agent can share the first jet, for example, first gasifying agent can be passed through into first coal charge
In, then sprayed into the vaporizer from the first jet together.Control the temperature in the vaporizer
It is the gasification reaction temperature.
In the present invention, gasification furnace is also provided with the opening and closing of tank level control system, temperature control system and cinder notch
Control unit.The vaporizer and molten slag bath can use refractory liner or water-cooling wall, it is also possible to two
Person combines.
The gasification unit or preferred gasification furnace in the present invention, compared to prior art, increase and set
The first jet, while eliminating the Quench part that prior art is set in connected entrance periphery.
In the present invention, first gasifying agent can be oxygen.First coal charge can be para bituminous coal
Or the product that lignite and its semi-coke powder are obtained after milling.The average grain diameter of first coal charge can be
0.01~1mm.The average grain diameter of the dry powder residue can be 0.01~1mm.
, according to the invention it is preferred in the case of, the gasification reaction will be described in being additionally included in the molten slag bath
Molten state slag liquid carries out three times and contacts with the second gasifying agent, the second coal charge, makes the molten state slag liquid and institute
Stating the second coal charge carries out slag gasification while maintaining the temperature of the molten slag bath.The principle of the slag gasification
It is during the second coal charge and the second gasifying agent (such as oxygen) sprayed into molten slag bath, using the melting in molten slag bath
State slag liquid high temperature realizes gasification；During the slag gasifies, second coal charge and the second gasifying agent
Spraying into the molten state slag liquid also has stirring action, and the second coal charge of control and the ratio of the second gasifying agent can
To adjust the temperature of the molten slag bath.The molten slag bath is to outer closure.
A preferred embodiment of the invention, as shown in figure 3, the molten slag bath is additionally provided with the 3rd
Nozzle 121, for spraying into second gasifying agent and second coal charge in the molten state slag liquid,
Carry out three contacts.
3rd nozzle can be preferably set on the side wall at the middle part of the molten slag bath, more preferably set
3rd nozzle is in the tangential direction of the molten slag bath.3rd nozzle can have multiple, can be with
Uniform ring is set around the molten slag bath.
, according to the invention it is preferred in the case of, the weight ratio of coal charge and the dry powder residue is 1:0.1~1:0.5.
Ensure that the product for obtaining can be used as artificial stone.
It should be noted that in the present invention, the addition of coal charge considers first contact and the described 3rd
First coal charge and the total amount of second coal charge added in contact, i.e., described first coal charge and described
The total amount of the second coal charge is 1 with the weight ratio of the dry powder residue:0.1~1:0.5.Second coal charge can be with
First coal charge is identical, repeats no more.Further, in order to meet the group of the artificial stone for finally giving
Into requiring, preferably described first coal charge is 1 with the weight ratio of second coal charge:0.1~1:0.3.
, according to the invention it is preferred in the case of, the consumption of gasifying agent is 300Nm3/ t coals~600Nm3/ t coals.
Gasifying agent 300Nm is needed relative to 1 ton of coal3~600Nm3.Ensure the abundant gasification of coal charge, complete
Coal gasification produces raw gas.The consumption of gasifying agent is first gasifying agent and second gasifying agent herein
Consumption summation, it is described as long as the consumption of specific first gasifying agent completes first contact
As long as the consumption of the second gasifying agent completes the 3rd contact.Second gasifying agent can with it is described
Second gasifying agent is identical, repeats no more.
According to the present invention, the fusing point 100 DEG C of the temperature control higher than the coal charge of the gasification reaction.It is excellent
In the case of choosing, 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, the molten state slag liquid of the gasification unit liquid discharge does not carry out Quench and directly height
Temperature is processed into the slag liquid formation system.Under preferable case, the side for being cast as artificial stone
Method includes that slag liquid continuous casting or slag liquid are molded.So-called continuous casting be by high temperature sludge liquid through cast, condensation, cutting and
The technique for directly obtaining injection.So-called molding is that high temperature sludge liquid is poured into slag mould one by one, cast
Block is gradually lowered the temperature in crystal growing furnace, and crystallisation solidification is shaping block, and the block after cooling can be built directly as building
Block, or as the raw material of sheet fabrication.
In the present invention, the molten state slag liquid is carried out described to be cast as artificial stone.Preferably, by institute
Stating the discharge of the material in molten slag bath carries out described being cast as artificial stone.Material in the molten slag bath is preferred
First coal charge can be included through molten state slag liquid, the dry powder residue of the described first contact formation through institute
State the product of the second contact formation, and the product that second coal charge is formed through the described 3rd contact.
, according to the invention it is preferred in the case of, the process for being cast as artificial stone is in slag liquid formation system
Middle implementation, the slag liquid formation system includes slag tap unit, slag base continuous casting unit and slag base machining cell,
In the slag liquid formation system, the molten state slag liquid with the rate of temperature fall of 10 DEG C/h~1200 DEG C/h by
1250 DEG C~1700 DEG C are down to room temperature.Preferably, by the material in the molten slag bath with 10 DEG C/h~1200
DEG C/rate of temperature fall of h is down to room temperature by 1250 DEG C~1700 DEG C.In the slag liquid formation system, high temperature
Slag liquid is gradually cooled down, and preferably described rate of temperature fall can be 60 DEG C/h~1200 DEG C/h, to avoid what is obtained
There is situation about bursting apart in the change of Engineered stone products' stress.
In a kind of preferred embodiment of the present invention, the slag liquid continuous casting uses circular-arc type continuous casting machine, including main body
Equipment, auxiliary equipment, manufacturability equipment, and the most of composition of Automatic control and measure instrument four.Such as
Shown in Fig. 2, main equipment mainly includes：Casting equipment (cinder ladle acknowledgement of consignment equipment, tundish and its dolly),
Crystallizer and its vibrating device, secondary cooling support oriented device, throwing equipment for straightening, strand cut and set
It is standby etc..Auxiliary equipment is mainly including ejection and finishing equipment (roller-way, Blank drawing machine, cold bed etc.).Technique
Equipment is mainly including baking of tundish device, lubrication of crystallizer device, water supply and water treatment facilities etc..From
Dynamic control and instrumentation mainly measurement and display system, process control and calculating including mold liquid level
Machine 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 is：Will
Molten state slag liquid is continuously injected one or one group of water-cooled copper crystallizer by cinder ladle 1 through tundish 2
3.Drawn base bar and strictly sealed with the inwall surrounding of crystallizer 3 by drawing base bar support in the bottom of crystallizer 3.
The molten state slag liquid for injecting crystallizer 3 is cooled down strongly, is quickly formed thick with definite shape and green shell
The initial strand of degree；When the molten state slag liquid in crystallizer 3 is poured into certain altitude, start withdrawal straightening machine,
Simultaneously with the vibrating crystallizer 3 of vibrating device 5, withdrawing roll is clamped and draws base bar with the certain speed initial strand of pull-out,
By secondary cooling zone 4 until forming the strand 6 for solidifying completely.Strand 6 is aligned through the drawing straightener 9
Afterwards, slough and draw blanking device, then cleaved equipment 8 cuts into cut lengths, and casting is delivered to by rollgang 7
Base job shop is further processed into different size construction material.
In the present invention, the molten state slag liquid, the material in preferably described molten slag bath is molded through the slag liquid
The product for obtaining, is tested through GB/T9966.1-2001 regulations, and average compressive strength meets natural stone
Requirement, it may be determined that be artificial stone.
According to the present invention, the rough coal produced through the gasification reaction is also discharged from the gasification unit
Gas, can be used for preparing Fischer-Tropsch synthetic by Fischer-Tropsch synthesis.Under preferable case, such as scheme
Shown in 1, the method passes through in useless pot unit the raw gas in being additionally included in raw gas after-treatment system
In cooled down, purified in gas purification unit, enter line translation in converter unit and in Fischer-Tropsch
Fischer-Tropsch synthesis are carried out in synthesis unit, Fischer-Tropsch synthetic is obtained to produce.
In the present invention, the useless pot is waste heat boiler, is to be for the raw gas to be carried out into heat exchange cooling
The equipment of low temperature coal gas.The useless pot can be in the surface overhead of the vaporizer, it is also possible to side,
Then the vaporizer is connected using communicating pipe.It is preferred that the temperature of the low temperature coal gas is 400 DEG C~200 DEG C.
Specifically can be with for example, the useless pot entered above vaporizer by the raw gas that the vaporizer of gasification furnace is produced
Unit, the low temperature coal gas that then will be obtained are passed through gas purification unit, such as scrubbing tower, with water washing
The low temperature coal gas, then from the top discharge purification coal gas of scrubbing tower, wash in the bottom discharge of scrubbing tower
Wash waste water.
The converter unit is used for the CO and H in coal gas2Ratio be tuned as being appropriate for Fischer-Tropsch conjunction
Into reaction, can be repeated no more using the conventional method and apparatus in this area.The F- T synthesis unit
It is by CO and H2The synthesis gas of composition carries out Fischer-Tropsch synthesis in the presence of fischer-tropsch catalysts, can be with
Using the conventional equipment in this area, repeat no more.
According to the invention, it is further possible to realize energy utilization.Under preferable case, as shown in figure 1, the method
Be additionally included in the part coal of the steam and purification generation for the cooling being produced in energy utility system
Gas carries out combined combustion and steam turbine power in combined combustion and steam turbine power unit, and produces hot waste gas.It is described
Combined combustion and steam turbine power unit can be equipment commonly used in the art, such as steam turbine and combustion gas
Turbine.
, according to the invention it is preferred in the case of, as shown in figure 1, the method is additionally included in profit in feed system
Raw coal is ground respectively through coal milling unit and by waste residue through waste residue milling unit with the hot waste gas,
First coal charge, second coal charge and the dry powder residue are respectively obtained, and with nitrogen or CO2To carry
Qi leel is not through Geldart-D particle unit transportation to the gasification unit.The coal milling unit, waste residue mill
Powder unit can be equipment commonly used in the art, as long as grinding is met the coal charge of this method and does
The average grain diameter of ground-slag, for example can with average grain diameter as 0.01mm~1mm.The Geldart-D particle
Unit can be equipment commonly used in the art, such as three storehouse pumps, by normal pressure feed bin, transformation storehouse and hair
Feed bin is constituted.
In the present invention, air-separating plant can be set for for the method for the present invention is provided as gasifying agent
Oxygen, and for the nitrogen of Geldart-D particle unit.Air-separating plant can be commonly used in the art
Equipment.
Present invention also offers artificial stone obtained in a kind of the inventive method, the artificial stone according to
GB/T9966.1-2001 specifies to test the average compressive strength for obtaining more than 100MPa.
In the present invention, the product finally obtained in slag liquid formation system specifies according to GB/T9966.1-2001
Tested, average compressive strength is a kind of people that performance meets or exceeds natural stone more than 100MPa
Make stone.It is preferred that average compressive strength is 100~120MPa.
The composition of the artificial stone can include aluminum oxide, silica, calcium oxide, magnesia, oxidation
Iron, potassium oxide, sodium oxide molybdena etc., further can determine the artificial stone according to GB/T 17412.1-1998
Containing igneous rock composition, for example, can be granites (Granite), rhyolite (Rhyolite), sudden strain of a muscle length
Rock (Diorite), andesite (Andesite), brightness feldspar (Gabbro), basalt (Basalt) or
Peridotite (Peridotite) etc..
Below will the present invention will be described in detail by embodiment.
In following examples, according to GB/T9966.1-2001《Natural ornamental stone test method first
Point：Compressive strength after drying, water saturation, Frozen-thawed cycled》Regulation test by slag liquid formation system obtain
Product average compressive strength：
Specifically, the length of side, measurement essence are measured after the sample drying cooling of the product that will be obtained by standard requirement
Really to 0.5mm, lifting surface area is calculated；Then sample is placed in testing machine lower platen centre, at the uniform velocity
Imposed load is until sample burst, records maximal destruction load；Process of the test maximal destruction power is divided by compression
Areal calculation compressive strength；Using the number of Jinan mechanical ＆ electronic equipment corporation, Ltd of institution of higher learning model YES-2000A
Aobvious hydraulic pressure testing machine is tested.
Raw coal in following examples is the coal from infrared ray light shine great Liu tower ore deposits, and physical parameter contains for moisture
Measure 10.21 weight %, the weight % of content of ashes 11.83, the weight % of volatile matter content 31.91, fixed carbon
The weight % of content 46.05.
Waste residue come from Shenmu County's electric field, flyash, it is 51 weight %SiO to constitute2, 17.7 weight %Al2O3、
6.21 weight %Fe2O3, 12.64 weight %CaO, 1.96 weight %MgO, 4.59 weight %SO3, powder
The particle mean size of coal ash is 0.1mm, and bulk density is 0.7 ton/m3, moisture is 2 weight %.
Embodiment 1
This example demonstrates that the preparation method of artificial stone of the invention.
According to the flow shown in Fig. 1
(1) gasify：Infrared ray light shine great Liu towers pit coal is ground to coal charge (average grain through coal milling unit
Footpath is 0.09mm), Shenmu County's electric field flyash is ground to dry powder residue (average grain diameter through waste residue milling unit
It is 0.09mm), then adding gasification unit to be contacted with oxygen through Geldart-D particle unit respectively carries out gasified reverse
Should, the addition total amount of coal charge is 500kg/km3Synthesis gas, dry powder residue addition is 100kg/km3Synthesis
Gas, the addition total amount of gasifying agent (oxygen) is 350Nm3/km3Synthesis gas, the temperature of gasification reaction is
1400℃。
Gasification unit is gasification furnace, as shown in figure 3, the side wall in vaporizer is provided with the first coal charge of penetrating
With the first jet of the first gasifying agent, and the second nozzle of dry powder residue is sprayed into, second nozzle is located at first
Nozzle top.The lower section of vaporizer be molten slag bath, molten slag bath middle part be provided with the 3rd nozzle for spray into second
In the slag liquid that coal charge and the second gasifying agent enter in molten slag bath.Slag liquid temperature degree is 1400 DEG C.
(2) coal gas F- T synthesis：The raw gas of gasification reaction discharge is up by waste heat boiler (abbreviation
Useless pot) low temperature coal gas are cooled to, useless pot does not produce dross problem, and the steam that useless pot is produced send combustion gas to steam
Vapour cogeneration unit is generated electricity.Low temperature coal gas temperature is 230 DEG C.Low temperature coal gas send into scrubbing tower,
It is purification coal gas feeding converter unit with water washing purification, being re-fed into F- T synthesis unit carries out F- T synthesis
Reaction production diesel oil；Wherein slurry amount is reduced.
(3) artificial stone processed：Slag liquid discharge in molten slag bath carries out slag liquid continuous casting, uses as shown in Figure 2
Circular-arc type continuous casting machine, slag liquid is continuously injected one or one group of water-cooled copper crystallization by cinder ladle through tundish
Device.Crystalliser feet is drawn base bar and is strictly sealed with crystallizer inwall surrounding by drawing base bar support.Injection knot
After the slag liquid of brilliant device is cooled down strongly, the strand with definite shape and shell thickness is quickly formed.When
When slag liquid is poured into certain altitude in crystallizer, start withdrawal straightening machine, crystallizer is vibrated simultaneously, and withdrawing roll is clamped
Draw base bar to be pulled out with certain speed, until strand solidifies completely, obtain slag liquid continuous casting product.By slag liquid continuous casting
Product sampling is measured, and average compressive strength is 100MPa, is defined as with strong better than lithotome
Spend the artificial stone of performance.
By slag liquid continuous casting product through aligning after, slough and draw blanking device, then cut into cut lengths, by conveying
Roller-way delivers to strand job shop and 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 the flow shown in Fig. 1
(1) gasify：Infrared ray light shine is mended into even tower pit coal and is ground to coal charge (average grain through coal milling unit
Footpath is 1mm), waste residue of sulfuric acid is ground to ground-slag (average grain diameter is 0.1mm) through waste residue milling unit,
Then gasification unit is added to be contacted with oxygen and carry out gasification reaction through Geldart-D particle unit respectively, coal charge adds
Enter total amount for 500kg/km3Synthesis gas, dry powder residue addition is 100kg/km3Synthesis gas, gasifying agent (oxygen
Gas) addition total amount be 400Nm3/km3Synthesis gas, the temperature of gasification reaction is 1350 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
With the first jet of the first gasifying agent, and the second nozzle of dry powder residue is sprayed into, second nozzle is located at first
Nozzle top.The lower section of vaporizer be molten slag bath, molten slag bath middle part be provided with the 3rd nozzle for spray into second
In the slag liquid that coal charge and the second gasifying agent enter in molten slag bath.Slag liquid temperature degree is 1300 DEG C.
(2) coal gas F- T synthesis：The raw gas of gasification reaction discharge is up by waste heat boiler (abbreviation
Useless pot) low temperature coal gas are cooled to, useless pot does not produce dross problem, and the steam that useless pot is produced send combustion gas to steam
Vapour cogeneration unit is generated electricity.Low temperature coal gas temperature is 210 DEG C.Low temperature coal gas send into scrubbing tower,
It is purification coal gas feeding converter unit with water washing purification, being re-fed into F- T synthesis unit carries out F- T synthesis
Reaction production diesel oil；Wherein slurry amount is reduced.
(3) artificial stone processed：Slag liquid discharge in molten slag bath carries out slag liquid continuous casting, uses as shown in Figure 2
Circular-arc type continuous casting machine, slag liquid is continuously injected one or one group of water-cooled copper crystallization by cinder ladle through tundish
Device.Crystalliser feet is drawn base bar and is strictly sealed with crystallizer inwall surrounding by drawing base bar support.Injection knot
After the slag liquid of brilliant device is cooled down strongly, the strand with definite shape and shell thickness is quickly formed.When
When slag liquid is poured into certain altitude in crystallizer, start withdrawal straightening machine, crystallizer is vibrated simultaneously, and withdrawing roll is clamped
Draw base bar to be pulled out with certain speed, until strand solidifies completely, obtain slag liquid continuous casting product.By slag liquid continuous casting
Product sampling is measured, and average compressive strength is 110MPa, is defined as with strong better than lithotome
Spend the artificial stone of performance.
By slag liquid continuous casting product through aligning after, slough and draw blanking device, then cut into cut lengths, by conveying
Roller-way delivers to strand job shop and 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 the flow shown in Fig. 1
(1) gasify：Through coal milling unit gulf coal on infrared ray light shine is ground into coal charge, and (average grain diameter is
0.01mm), calcium carbide waste slag is ground to dry powder residue (average grain diameter is 1mm) through waste residue milling unit,
Then gasification unit is added to be contacted with oxygen and carry out gasification reaction through Geldart-D particle unit respectively, coal charge adds
Enter total amount for 450kg/km3Synthesis gas, ground-slag addition is 100kg/km3Synthesis gas, gasifying agent (oxygen
Gas) addition total amount be 400Nm/km3Synthesis gas, the temperature of gasification reaction is 1350 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
With the first jet of the first gasifying agent, and the second nozzle of dry powder residue is sprayed into, second nozzle is located at first
Nozzle top.The lower section of vaporizer be molten slag bath, molten slag bath middle part be provided with the 3rd nozzle for spray into second
In the slag liquid that coal dust and the second gasifying agent enter in molten slag bath.Slag liquid temperature degree is 1300 DEG C.
(2) coal gas F- T synthesis：The raw gas of gasification reaction discharge is up by waste heat boiler (abbreviation
Useless pot) low temperature coal gas are cooled to, useless pot does not produce dross problem, and the steam that useless pot is produced send combustion gas to steam
Vapour cogeneration unit is generated electricity.Low temperature coal gas temperature is 230 DEG C.Low temperature coal gas send into scrubbing tower,
It is purification coal gas feeding converter unit with water washing purification, being re-fed into F- T synthesis unit carries out F- T synthesis
Reaction production diesel oil；Wherein slurry amount is reduced.
(3) artificial stone processed：Slag liquid discharge in molten slag bath carries out slag liquid continuous casting, uses as shown in Figure 2
Circular-arc type continuous casting machine, slag liquid is continuously injected one or one group of water-cooled copper crystallization by cinder ladle through tundish
Device.Crystalliser feet is drawn base bar and is strictly sealed with crystallizer inwall surrounding by drawing base bar support.Injection knot
After the slag liquid of brilliant device is cooled down strongly, the strand with definite shape and shell thickness is quickly formed.When
When slag liquid is poured into certain altitude in crystallizer, start withdrawal straightening machine, crystallizer is vibrated simultaneously, and withdrawing roll is clamped
Draw base bar to be pulled out with certain speed, until strand solidifies completely, obtain slag liquid continuous casting product.By slag liquid continuous casting
Product sampling is measured, and average compressive strength is 120MPa, is defined as with strong better than lithotome
Spend the artificial stone of performance.
By slag liquid continuous casting product through aligning after, slough and draw blanking device, then cut into cut lengths, by conveying
Roller-way delivers to strand job shop and is further processed into different size construction material.
The cinder that can be seen that the present invention by embodiment 1-3 can be produced using coal gasification mixes other and gives up
Slag produces artificial stone, realizes the twice laid of waste residue.
Claims (14)
1. a kind of preparation method of artificial stone, including：
First coal charge and the first gasifying agent are carried out into gasification reaction in gasification unit, molten state slag liquid is obtained
And raw gas；The molten state slag liquid discharged from the gasification unit is directly cast as artificial stone.
2. method according to claim 1, wherein, the method is further included：To the gas
Dry powder residue is passed through in change unit, the dry powder residue is flyash, calcium carbide production slag, blast furnace slag and/or sulfuric acid
Production waste residue, the ash fusion point of the dry powder residue is 1150 DEG C~1400 DEG C, average grain diameter be 0.01mm~
1mm。
3. method according to claim 2, wherein, the gasification reaction is included described the first
One gasifying agent is once contacted with first coal charge, produces raw gas and the molten state slag liquid；So
The raw gas is carried out into secondary contact with the dry powder residue afterwards；Wherein, the dry powder residue is by the rough coal
Gas is lowered the temperature and reduces the dry coal slag of carrying in the raw gas, while the raw gas adds the dry powder residue
Heat and the product addition molten state slag liquid for being formed.
4. method according to claim 3, wherein, the gasification unit includes vaporizer and molten
Slag bath, the molten slag bath is located at the lower section of the vaporizer and is connected with the vaporizer；The vaporizer
Bottom be provided with first sprayed into first coal charge and first gasifying agent inside the vaporizer
Nozzle, is provided with second sprayed into the dry powder residue inside the vaporizer above the first jet
Nozzle；
First coal charge and first gasifying agent are sprayed into inside the vaporizer from the first jet
Once contacted described in carrying out, produce the raw gas and the molten state slag liquid；Simultaneously the raw gas to
Upper flowing carries out described secondary with the dry powder residue sprayed into from the second nozzle inside the vaporizer
Contact, so that the raw gas is lowered the temperature and reduces the cinder amount of carrying, while the dry powder residue is heated
And the product for being formed adds the molten state slag liquid, into the molten slag bath.
5. the method according to claim 3 or 4, wherein, the gasification reaction is additionally included in institute
State and the molten state slag liquid is carried out three times with the second gasifying agent, the second coal charge in molten slag bath contact, make institute
Stating molten state slag liquid and second coal charge carries out slag gasification, while maintaining the temperature of the molten slag bath.
6. method according to claim 5, wherein, the molten slag bath is provided with the 3rd nozzle, uses
Second gasifying agent and second coal charge are sprayed into the molten state slag liquid, is carried out described three times
Contact.
7. the method according to any one in claim 2-6, wherein, coal charge and the dry slag
The weight ratio of powder is 1:0.1~1:0.5, the consumption of gasifying agent is 300Nm3/ t coals~600Nm3/ t coals.
8. the method according to any one in claim 2-6, wherein, the gasification reaction
Temperature is 1300 DEG C~1800 DEG C, and the pressure of the gasification reaction is 0.1~0.5MPa；The molten state slag
The temperature of liquid is 1250 DEG C~1700 DEG C.
9. the method according to any one in claim 1-8, wherein, it is described to be cast as being people
Making the method for stone includes that slag liquid continuous casting or slag liquid are molded.
10. method according to claim 9, wherein, the process for being cast as artificial stone exists
Implement in slag liquid formation system, the slag liquid formation system includes slag tap unit, slag base continuous casting unit and slag
Base machining cell；In the slag liquid formation system, the molten state slag liquid is with 10 DEG C/h~1200 DEG C/h
Rate of temperature fall be down to room temperature by 1250 DEG C~1700 DEG C.
11. method according to any one in claim 1-10, wherein, the method also includes
In raw gas after-treatment system by the raw gas by being cooled down in useless pot unit, it is net in coal gas
Purified in change unit, line translation entered in converter unit and Fischer-Tropsch conjunction is carried out in F- T synthesis unit
Into reaction, Fischer-Tropsch synthetic is obtained to produce.
12. methods according to claim 11, wherein, the method is additionally included in energy utilization system
The part coal gas that the steam and the purification for producing the cooling in system are produced combines hair in combustion and steam
Combined combustion and steam turbine power is carried out in electric unit, and produces hot waste gas.
13. methods according to claim 12, wherein, the method is additionally included in feed system
Raw coal is ground respectively through coal milling unit and by waste residue through waste residue milling unit using the hot waste gas
Mill, respectively obtains first coal charge, second coal charge and the dry powder residue, and with nitrogen or CO2
It is carrier gas respectively through Geldart-D particle unit transportation to the gasification unit.
Artificial stone, the people obtained in method in a kind of 14. 1-13 as claim described in any one
Make stone specifies to test the average compressive strength for obtaining more than 100MPa according to GB/T9966.1-2001.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113999039A (en) * | 2021-10-29 | 2022-02-01 | 江苏博拓新型建筑材料股份有限公司 | In-situ whisker reinforced autoclaved aerated concrete prepared from gasified slag and preparation method thereof |
| CN114956777A (en) * | 2022-06-09 | 2022-08-30 | 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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