CN106699104A - FCC (Fluid Catalytic Cracking) waste catalyst doped autoclaved flyash-lime brick and making method thereof - Google Patents

FCC (Fluid Catalytic Cracking) waste catalyst doped autoclaved flyash-lime brick and making method thereof Download PDF

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Publication number
CN106699104A
CN106699104A CN201611035610.0A CN201611035610A CN106699104A CN 106699104 A CN106699104 A CN 106699104A CN 201611035610 A CN201611035610 A CN 201611035610A CN 106699104 A CN106699104 A CN 106699104A
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pressure
flyash
brick
temperature
thiocarbamide
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CN106699104B (en
Inventor
马韵升
史庆苓
栾波
胡树峰
张逸晨
王明军
刘立勇
张童鑫
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Mountain Jingbo Environmental Protection Materials Co ltd
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Shandong Chambroad Holding Group Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B30/00—Compositions for artificial stone, not containing binders
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/0481—Other specific industrial waste materials not provided for elsewhere in C04B18/00
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Catalysts (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention discloses a method for manufacturing an autoclaved flyash-lime brick by using an FCC (Fluid Catalytic Cracking) waste catalyst. The method comprises the following step: by taking the FCC waste catalyst, coal ash, thiourea filter residues (Ca(OH)2) as main raw materials, doping a proper amount of aggregate, performing raw material pretreatment, pressing molding and high-temperature high-voltage steam curing, thereby obtaining the autoclaved flyash-lime brick. The autoclaved flyash-lime brick can replace conventional clay red bricks, and is a novel wall body material which is greatly developed and applied in China. The autoclaved flyash-lime brick is manufactured by using the FCC waste catalyst safely and efficiently. Not only are local solid-waste treatment problems solved, but also farmlands can be saved, pollution can be reduced, and the environment can be protected; as a great deal of industrial waste residues can be utilized, the autoclaved flyash-lime brick is good in durability and relatively high in wall body strength, and has great significances of environment protection and waste utilization.

Description

A kind of autoclaved fly ash brick of incorporation FCC dead catalyst and preparation method thereof
Technical field
The invention belongs to Material Field, and in particular to the method that FCC dead catalyst prepares autoclaved fly ash brick.
Technical background
Autoclaved fly ash brick, abbreviation flyash brick, with flyash, thiocarbamide filter residue (Ca (OH)2) it is primary raw material, admixture is suitable Amount aggregate, prepares, compressing, autoclave curing solid brick through embryo material, it is adaptable to all kinds of civil buildings, public build Build the inner, external wall with industrial premises, and house basis.It is the product for substituting conventional sintering clay brick.
FCC dead catalyst is dangerous useless one kind produced in the most important secondary operation catalytic cracking process of petroleum refining industry Gurry.With the heaviness and in poor quality of petroleum resources, worse and worse, catalytic cracking is catalyzed the quality of catalytic cracking unit raw material Agent is substantially shortened period of a permutation, and the dead catalyst amount discharged also is improved year by year, and major part can not all be reused.At present, It is domestic that dead catalyst is processed using landfill method mostly, but the main component of dead catalyst is Al2O3、SiO2And it is a certain amount of Rare earth and minimal amount of other heavy metal elements.Therefore, such way not only easily pollutes environment, and wastes land resource.
Chemical composition titration is carried out to FCC dead catalyst, it is found that its primary chemical constituent is close with flyash, can made In replacing part flyash to mix flyash brick for raw material, and product quality is not interfered with.The method can digest the useless catalysis of FCC Agent, farmland saving is reduced and polluted, environmental protection, largely using industrial residue, the important meaning with environmental protection and waste utilization.
The content of the invention
In order to not only efficiently safely make full use of dangerous waste again, it is used to prepare steaming this application provides a kind of FCC dead catalyst The method of pressing fly ash brick, mainly with FCC dead catalyst, flyash, thiocarbamide filter residue and aggregate chips as raw material, increases the useless catalysis of FCC The treatment approach of agent, reduces environmental pollution, and do not influence autoclaved fly ash brick quality.
To achieve these goals, the technical scheme that the application takes is as follows：
A kind of autoclaved fly ash brick of incorporation FCC dead catalyst, is prepared from by by the raw material of following weight parts：FCC gives up Catalyst 15-20 parts, flyash 20-25 parts, 15-25 parts, aggregate chips 30-40 parts of thiocarbamide filter residue.
Described FCC dead catalyst is that granularity is 180~250 mesh；Described flyash is to be arranged outside steam power plant's coal-powder boiler Three-level flyash；Described thiocarbamide filter residue the active calcium ion content is occupy thiocarbamide filter residue gross mass 40~50%；Aggregate chips is particle diameter In 3-8mm.
The method for preparing the autoclaved fly ash brick of described incorporation FCC dead catalyst, comprises the following steps that：
1) take thiocarbamide filter residue according to metering part, by thiocarbamide device output after, it is remaining to thiocarbamide by press filtration, washing filter cake Amount≤0.30%, containing wet≤38.00%, the active calcium ion content >=40.00%.
2) FCC dead catalyst being taken according to metering part, by itself and step 1) the thiocarbamide filter residue after treatment is mixed to get premix, The flyash and aggregate chips that part will be measured again are added in premix, obtain mixed material；
3) step 2) obtained by mixed material feeding mixer, external adding water by spraying into mixer after atomization, external adding water Consumption is the 10~15% of dry material quality, after raw material fully enters mixer, starts timing, after stirring 30s, the original for mixing Material draws off, and delivers to brick machine hopper；
4) compound sends into brick machine hopper through belt, starts brick machine, compressing；
5) step 4) obtained by shaping adobe, feeding still kettle carries out autoclave at high temperature maintenance, and steam-cured kettle is set by controller Increasing temperature and pressure speed, constant temperature and pressure temperature, constant temperature and pressure time, decrease temperature and pressure speed, the brick body after steam press maintenance is through naturally cold But get product.
Step 4) in brick machine pressure in 190-220t, control adobe weight for 1.90-2.20kg, adobe size is according to solid Brick standard size 240mm*115mm*53mm is pressed.
Described increasing temperature and pressure speed, constant temperature and pressure temperature, constant temperature and pressure time, decrease temperature and pressure speed is specifically with 25-35 DEG C/speed of h makes steam pressure temperature in the kettle be slowly increased to 150 DEG C；Rise to steam pressure temperature in the kettle with the speed of 35-45 DEG C/h again 180-190 DEG C, now pressure was 1.1MPa in kettle, in this warm area heat-insulation pressure keeping 7-8 hours；Made with the speed of 35-45 DEG C/h afterwards Temperature drops to less than 90 DEG C, and pressure is down to normal pressure in kettle, and now autoclave at high temperature maintaining process is completed.
The autoclaved fly ash brick that this method is produced, form-factor size is completely the same with solid plain clay brick, is 240mm x115mm x 53mm, so can directly replace solid clay brick with steam-pressing brisk.Autoclaved fly ash brick strength grade, The characteristic evidences JC/T such as frost resistance, linear drying shrinkage value, carbonation coefficient, water absorption rate 239-2014《Autoclaved fly ash brick》Mark Quasi- inspection；Finished product radionuclide limitation is according to GB 6566-2010《Radioactive material radionuclides limitation》Standard test.
The weight portion that FCC dead catalyst is used in the present invention is 15-20, and FCC dead catalyst usage amount is higher than this scope, meeting Cause unstable product quality；Usage amount is less than this scope, and FCC dead catalyst consumptions are few, it is not intended to justice, is unfavorable for that product promotion should With.
FCC dead catalyst is that a kind of solid produced in the most important secondary operation catalytic cracking process of petroleum refining industry gives up Gurry.Its main component is Al2O3、SiO2And a certain amount of rare earth and minimal amount of other heavy metal elements.The useless catalysis of FCC Sial salt in agent issues unboiled water thermal response in the alkaline environment of HTHP, generate substantial amounts of CaOSiO2nH2O and CaOAl2O3nH2O, so that product obtains intensity.And because aluminium element content is high in FCC dead catalyst, generated in product Hydrated product CaOAl2O3nH2O amount of crystals it is many, CaOSiO2nH2O and CaOAl2O3nH2O phase interactions Product strength is improved with common, the bending and compressive strength than simple CaOSiO2nH2O products is good, therefore with appropriate FCC dead catalyst substitution part flyash is higher than the product strength of full fly ash.
FCC dead catalyst is inactivated due to its surface mass, hinders its inner material fully to react, and reduces reaction rate, therefore To be premixed with thiocarbamide filter residue before, using filter residue alkali-activated carbonatite, increase its reaction surface area, improve activity.FCC dead catalyst by Storage tank continuously squeezes into flow-type agitating device, meanwhile, thiocarbamide filter residue stirs 15-20s by another Belt Conveying to the mixer, Premix is continuous to be exported by belt.Both are carried out match ratio by raw material proportioning.In order to be able to make FCC dead catalyst obtain high activity, 3 days need to be stood after premix and used above.
Described flyash is the three-level flyash arranged outside steam power plant's coal-powder boiler；
Three-level flyash main mineral constituent has the carbon of quartz, mullite, magnetic iron ore, bloodstone and uncombusted.Fine coal Ash is main sial element supplier in autoclaved fly ash brick production, possesses higher strong through the product after high-temperature high-voltage reaction Degree.The weight portion that flyash is used in the present invention is 20-25, and flyash is higher than this scope, and material reaction degree is unstable, there is folder The raw or inhomogenous phenomenon of surface color, outward appearance is field gray, and product is in powdery, intensity difference；；Flyash addition is less than this model Enclose, product rupture strength is relatively low, be unfavorable for production run, product percent of pass declines.
Thiocarbamide filter residue carrys out the industrial accessory substance of thiocarbamide；
Thiocarbamide filter residue main component is remaining with a small amount of carbon and thiocarbamide.In autoclaved fly ash brick, thiocarbamide filter residue is most One of main raw material, so that there is provided the alkalescence condition of each raw material hydration reaction.Thiocarbamide filter residue has to pass through washing and goes sulphur removal Urea is remaining, it is ensured that thiocarbamide residual volume≤0.30%, containing wet≤38.00%, the active calcium ion content >=40.00%.Used in the present invention Thiocarbamide filter residue weight portion is 15-20, and thiocarbamide filter residue is higher than this scope, and product rupture strength is relatively low, is unfavorable for production run, product Qualification rate declines；Thiocarbamide filter residue addition is less than this scope, and material reaction degree is unstable, there is half-cooked, surface color heterogeneity Or the phenomenon of dry linting.
Aggregate chips is the pellet that the particle diameter for rolling and sieving obtained by rubble is 3~8mm.Main component is calcium carbonate, is also contained Part SiO2Crystal, primarily serves the effect of aggregate support in autoclaved fly ash brick production.Accounted for always using aggregate chips in the present invention The 30-40% of weight, aggregate chips is less than this scope, product lower compressive strength, unstable product quality；Aggregate chips is higher than this scope, Product pressing pressure is improved, and increases energy consumption, improves cost, does not utilize production run.
All of percentage is mass percent in the application.
Present invention take advantage of that FCC dead catalyst, flyash, four kinds of solid waste of thiocarbamide filter residue and aggregate chips, these four give up Gurry organically coordinates, and has produced the autoclaved fly ash brick of high intensity, instead of traditional common brick.Discarded object has not only been processed, And it is lower than the cost of general technology.
Specific embodiment
Embodiment 1
A kind of autoclaved fly ash brick of incorporation FCC dead catalyst, is prepared from by by the raw material of following weight parts：FCC gives up 20 parts of catalyst, 25 parts of flyash, 20 parts of thiocarbamide filter residue, 35 parts of aggregate chips.
Described FCC dead catalyst is that granularity is 180~250 mesh；Described flyash is to be arranged outside steam power plant's coal-powder boiler Three-level flyash；Described thiocarbamide filter residue the active calcium ion content is occupy thiocarbamide filter residue gross mass 42%；Aggregate chips exists for particle diameter 4mm。
The method for preparing the autoclaved fly ash brick of described incorporation FCC dead catalyst, comprises the following steps that：
1) take thiocarbamide filter residue according to metering part, by thiocarbamide device output after, it is remaining to thiocarbamide by press filtration, washing filter cake Amount≤0.30%, containing wet≤38.00%, the active calcium ion content >=40.00%.
2) FCC dead catalyst being taken according to metering part, by itself and step 1) the thiocarbamide filter residue after treatment is mixed to get premix, The flyash and aggregate chips that part will be measured again are added in premix, obtain mixed material；
3) step 2) obtained by mixed material feeding mixer, external adding water by spraying into mixer after atomization, external adding water Consumption is the 12.50% of dry material quality, after raw material fully enters mixer, starts timing, after stirring 30s, the original for mixing Material draws off, and delivers to brick machine hopper；
4) compound sends into brick machine hopper through belt, starts brick machine, compressing；
5) step 4) obtained by shaping adobe, feeding still kettle carries out autoclave at high temperature maintenance, and steam-cured kettle is set by controller Increasing temperature and pressure speed, constant temperature and pressure temperature, constant temperature and pressure time, decrease temperature and pressure speed, the brick body after steam press maintenance is through naturally cold But get product.
Step 4) in brick machine pressure in 198t, control adobe weight for 1.95kg, adobe size is according to solid brick gauge Very little 240mm*115mm*53mm is pressed.
Described increasing temperature and pressure speed, constant temperature and pressure temperature, constant temperature and pressure time, decrease temperature and pressure speed is specifically with 31 DEG C/h Speed steam pressure temperature in the kettle is slowly increased to 150 DEG C；Steam pressure temperature in the kettle is set to rise to 185.5 DEG C with the speed of 40 DEG C/h again, Now pressure was 1.1MPa in kettle, in this warm area heat-insulation pressure keeping 7-8 hours；Afterwards with the speed of 39 DEG C/h make temperature drop to 90 DEG C with Under, and in kettle pressure is down to normal pressure, now autoclave at high temperature maintaining process complete.
The autoclaved fly ash brick obtained by above method, its rupture strength is 2.69MPa, and compression strength is 12.50MPa, Meet standard JC/T 239-2014《Autoclaved fly ash brick》MU10 product requirements；Finished product External Exposure Index IRaIt is 0.2, external exposure Index IyIt is 0.4, meets GB 6566-2010《Radioactive material radionuclides limitation》Standard requirement.
Embodiment 2
A kind of autoclaved fly ash brick of incorporation FCC dead catalyst, is prepared from by by the raw material of following weight parts：FCC gives up 19 parts of catalyst, 24 parts of flyash, 21 parts of thiocarbamide filter residue, 36 parts of aggregate chips.
Described FCC dead catalyst is that granularity is 180~250 mesh；Described flyash is to be arranged outside steam power plant's coal-powder boiler Three-level flyash；Described thiocarbamide filter residue the active calcium ion content is occupy thiocarbamide filter residue gross mass 43%；Aggregate chips exists for particle diameter 5mm。
The method for preparing the autoclaved fly ash brick of described incorporation FCC dead catalyst, comprises the following steps that：
1) take thiocarbamide filter residue according to metering part, by thiocarbamide device output after, it is remaining to thiocarbamide by press filtration, washing filter cake Amount≤0.30%, containing wet≤38.00%, the active calcium ion content >=40.00%.
2) FCC dead catalyst being taken according to metering part, by itself and step 1) the thiocarbamide filter residue after treatment is mixed to get premix, The flyash and aggregate chips that part will be measured again are added in premix, obtain mixed material；
3) step 2) obtained by mixed material feeding mixer, external adding water by spraying into mixer after atomization, external adding water Consumption is the 13.40% of dry material quality, after raw material fully enters mixer, starts timing, after stirring 30s, the original for mixing Material draws off, and delivers to brick machine hopper；
4) compound sends into brick machine hopper through belt, starts brick machine, compressing；
5) step 4) obtained by shaping adobe, feeding still kettle carries out autoclave at high temperature maintenance, and steam-cured kettle is set by controller Increasing temperature and pressure speed, constant temperature and pressure temperature, constant temperature and pressure time, decrease temperature and pressure speed, the brick body after steam press maintenance is through naturally cold But get product.
Step 4) in brick machine pressure in 209t, control adobe weight for 2.03kg, adobe size is according to solid brick gauge Very little 240mm*115mm*53mm is pressed.
Described increasing temperature and pressure speed, constant temperature and pressure temperature, constant temperature and pressure time, decrease temperature and pressure speed is specifically with 29 DEG C/h Speed steam pressure temperature in the kettle is slowly increased to 150 DEG C；Steam pressure temperature in the kettle is set to rise to 186 DEG C with the speed of 38 DEG C/h again, this When kettle in pressure be 1.1MPa, in this warm area heat-insulation pressure keeping 7-8 hours；Afterwards with the speed of 43 DEG C/h make temperature drop to 90 DEG C with Under, and in kettle pressure is down to normal pressure, now autoclave at high temperature maintaining process complete.
The autoclaved fly ash brick obtained by above method, its rupture strength is 2.80MPa, and compression strength is 13.05MPa, Meet standard JC/T 239-2014《Autoclaved fly ash brick》MU10 product requirements；Finished product External Exposure Index IRaIt is 0.2, external exposure Index IyIt is 0.3, meets GB 6566-2010《Radioactive material radionuclides limitation》Standard requirement.
Embodiment 3
A kind of autoclaved fly ash brick of incorporation FCC dead catalyst, is prepared from by by the raw material of following weight parts：FCC gives up 18 parts of catalyst, 23 parts of flyash, 22 parts of thiocarbamide filter residue, 37 parts of aggregate chips.
Described FCC dead catalyst is that granularity is 180~250 mesh；Described flyash is to be arranged outside steam power plant's coal-powder boiler Three-level flyash；Described thiocarbamide filter residue the active calcium ion content is occupy thiocarbamide filter residue gross mass 46%；Aggregate chips exists for particle diameter 7mm。
The method for preparing the autoclaved fly ash brick of described incorporation FCC dead catalyst, comprises the following steps that：
1) take thiocarbamide filter residue according to metering part, by thiocarbamide device output after, it is remaining to thiocarbamide by press filtration, washing filter cake Amount≤0.30%, containing wet≤38.00%, the active calcium ion content >=40.00%.
2) FCC dead catalyst being taken according to metering part, by itself and step 1) the thiocarbamide filter residue after treatment is mixed to get premix, The flyash and aggregate chips that part will be measured again are added in premix, obtain mixed material；
3) step 2) obtained by mixed material feeding mixer, external adding water by spraying into mixer after atomization, external adding water Consumption is the 13.9% of dry material quality, after raw material fully enters mixer, starts timing, after stirring 30s, the raw material for mixing Draw off, and deliver to brick machine hopper；
4) compound sends into brick machine hopper through belt, starts brick machine, compressing；
5) step 4) obtained by shaping adobe, feeding still kettle carries out autoclave at high temperature maintenance, and steam-cured kettle is set by controller Increasing temperature and pressure speed, constant temperature and pressure temperature, constant temperature and pressure time, decrease temperature and pressure speed, the brick body after steam press maintenance is through naturally cold But get product.
Step 4) in brick machine pressure in 212t, control adobe weight for 2.05kg, adobe size is according to solid brick gauge Very little 240mm*115mm*53mm is pressed.
Described increasing temperature and pressure speed, constant temperature and pressure temperature, constant temperature and pressure time, decrease temperature and pressure speed is specifically with 32 DEG C/h Speed steam pressure temperature in the kettle is slowly increased to 150 DEG C；Steam pressure temperature in the kettle is set to rise to 186.5 DEG C with the speed of 42 DEG C/h again, Now pressure was 1.1MPa in kettle, in this warm area heat-insulation pressure keeping 7-8 hours；Afterwards with the speed of 41 DEG C/h make temperature drop to 90 DEG C with Under, and in kettle pressure is down to normal pressure, now autoclave at high temperature maintaining process complete.
The autoclaved fly ash brick obtained by above method, its rupture strength is 2.96MPa, and compression strength is 13.30MPa, Meet standard JC/T 239-2014《Autoclaved fly ash brick》MU10 product requirements；Finished product External Exposure Index IRaIt is 0.1, external exposure Index IyIt is 0.2, meets GB 6566-2010《Radioactive material radionuclides limitation》Standard requirement.
Embodiment 4
A kind of autoclaved fly ash brick of incorporation FCC dead catalyst, is prepared from by by the raw material of following weight parts：FCC gives up 17 parts of catalyst, 22 parts of flyash, 23 parts of thiocarbamide filter residue, 38 parts of aggregate chips.
Described FCC dead catalyst is that granularity is 180~250 mesh；Described flyash is to be arranged outside steam power plant's coal-powder boiler Three-level flyash；Described thiocarbamide filter residue the active calcium ion content is occupy thiocarbamide filter residue gross mass 49%；Aggregate chips exists for particle diameter 8mm。
The method for preparing the autoclaved fly ash brick of described incorporation FCC dead catalyst, comprises the following steps that：
1) take thiocarbamide filter residue according to metering part, by thiocarbamide device output after, it is remaining to thiocarbamide by press filtration, washing filter cake Amount≤0.30%, containing wet≤38.00%, the active calcium ion content >=40.00%.
2) FCC dead catalyst being taken according to metering part, by itself and step 1) the thiocarbamide filter residue after treatment is mixed to get premix, The flyash and aggregate chips that part will be measured again are added in premix, obtain mixed material；
3) step 2) obtained by mixed material feeding mixer, external adding water by spraying into mixer after atomization, external adding water Consumption is the 14.00% of dry material quality, after raw material fully enters mixer, starts timing, after stirring 30s, the original for mixing Material draws off, and delivers to brick machine hopper；
4) compound sends into brick machine hopper through belt, starts brick machine, compressing；
5) step 4) obtained by shaping adobe, feeding still kettle carries out autoclave at high temperature maintenance, and steam-cured kettle is set by controller Increasing temperature and pressure speed, constant temperature and pressure temperature, constant temperature and pressure time, decrease temperature and pressure speed, the brick body after steam press maintenance is through naturally cold But get product.
Step 4) in brick machine pressure in 215t, control adobe weight for 2.11kg, adobe size is according to solid brick gauge Very little 240mm*115mm*53mm is pressed.
Described increasing temperature and pressure speed, constant temperature and pressure temperature, constant temperature and pressure time, decrease temperature and pressure speed is specifically with 30 DEG C/h Speed steam pressure temperature in the kettle is slowly increased to 150 DEG C；Steam pressure temperature in the kettle is set to rise to 187 DEG C with the speed of 39 DEG C/h again, this When kettle in pressure be 1.1MPa, in this warm area heat-insulation pressure keeping 7-8 hours；Afterwards with the speed of 44 DEG C/h make temperature drop to 90 DEG C with Under, and in kettle pressure is down to normal pressure, now autoclave at high temperature maintaining process complete.
The autoclaved fly ash brick obtained by above method, its rupture strength is 3.00MPa, and compression strength is 13.58MPa, Meet standard JC/T 239-2014《Autoclaved fly ash brick》MU10 product requirements；Finished product External Exposure Index IRaIt is 0.1, external exposure Index IyIt is 0.1, meets GB 6566-2010《Radioactive material radionuclides limitation》Standard requirement.
Embodiment 5
A kind of autoclaved fly ash brick of incorporation FCC dead catalyst, is prepared from by by the raw material of following weight parts：FCC gives up 16 parts of catalyst, 21 parts of flyash, 24 parts of thiocarbamide filter residue, 39 parts of aggregate chips.
Described FCC dead catalyst is that granularity is 180~250 mesh；Described flyash is to be arranged outside steam power plant's coal-powder boiler Three-level flyash；Described thiocarbamide filter residue the active calcium ion content is occupy thiocarbamide filter residue gross mass 48.5%；Aggregate chips exists for particle diameter 6mm。
The method for preparing the autoclaved fly ash brick of described incorporation FCC dead catalyst, comprises the following steps that：
1) take thiocarbamide filter residue according to metering part, by thiocarbamide device output after, it is remaining to thiocarbamide by press filtration, washing filter cake Amount≤0.30%, containing wet≤38.00%, the active calcium ion content >=40.00%.
2) FCC dead catalyst being taken according to metering part, by itself and step 1) the thiocarbamide filter residue after treatment is mixed to get premix, The flyash and aggregate chips that part will be measured again are added in premix, obtain mixed material；
3) step 2) obtained by mixed material feeding mixer, external adding water by spraying into mixer after atomization, external adding water Consumption is the 14.22% of dry material quality, after raw material fully enters mixer, starts timing, after stirring 30s, the original for mixing Material draws off, and delivers to brick machine hopper；
4) compound sends into brick machine hopper through belt, starts brick machine, compressing；
5) step 4) obtained by shaping adobe, feeding still kettle carries out autoclave at high temperature maintenance, and steam-cured kettle is set by controller Increasing temperature and pressure speed, constant temperature and pressure temperature, constant temperature and pressure time, decrease temperature and pressure speed, the brick body after steam press maintenance is through naturally cold But get product.
Step 4) in brick machine pressure in 219t, control adobe weight for 2.16kg, adobe size is according to solid brick gauge Very little 240mm*115mm*53mm is pressed.
Described increasing temperature and pressure speed, constant temperature and pressure temperature, constant temperature and pressure time, decrease temperature and pressure speed is specifically with 33 DEG C/h Speed steam pressure temperature in the kettle is slowly increased to 150 DEG C；Steam pressure temperature in the kettle is set to rise to 186.5 DEG C with the speed of 36 DEG C/h again, Now pressure was 1.1MPa in kettle, in this warm area heat-insulation pressure keeping 7-8 hours；Afterwards with the speed of 38 DEG C/h make temperature drop to 90 DEG C with Under, and in kettle pressure is down to normal pressure, now autoclave at high temperature maintaining process complete.
The autoclaved fly ash brick obtained by above method, its rupture strength is 3.25MPa, and compression strength is 15.08MPa, Meet standard JC/T 239-2014《Autoclaved fly ash brick》MU10 product requirements；Finished product External Exposure Index IRaIt is 0.1, external exposure Index IyIt is 0.1, meets GB 6566-2010《Radioactive material radionuclides limitation》Standard requirement.
Embodiment 6
A kind of autoclaved fly ash brick of incorporation FCC dead catalyst, is prepared from by by the raw material of following weight parts：FCC gives up 15 parts of catalyst, 20 parts of flyash, 25 parts of thiocarbamide filter residue, 40 parts of aggregate chips.
Described FCC dead catalyst is that granularity is 180~250 mesh；Described flyash is to be arranged outside steam power plant's coal-powder boiler Three-level flyash；Described thiocarbamide filter residue the active calcium ion content is occupy thiocarbamide filter residue gross mass 45%；Aggregate chips exists for particle diameter 4mm。
The method for preparing the autoclaved fly ash brick of described incorporation FCC dead catalyst, comprises the following steps that：
1) take thiocarbamide filter residue according to metering part, by thiocarbamide device output after, it is remaining to thiocarbamide by press filtration, washing filter cake Amount≤0.30%, containing wet≤38.00%, the active calcium ion content >=40.00%.
2) FCC dead catalyst being taken according to metering part, by itself and step 1) the thiocarbamide filter residue after treatment is mixed to get premix, The flyash and aggregate chips that part will be measured again are added in premix, obtain mixed material；
3) step 2) obtained by mixed material feeding mixer, external adding water by spraying into mixer after atomization, external adding water Consumption is the 14.9% of dry material quality, after raw material fully enters mixer, starts timing, after stirring 30s, the raw material for mixing Draw off, and deliver to brick machine hopper；
4) compound sends into brick machine hopper through belt, starts brick machine, compressing；
5) step 4) obtained by shaping adobe, feeding still kettle carries out autoclave at high temperature maintenance, and steam-cured kettle is set by controller Increasing temperature and pressure speed, constant temperature and pressure temperature, constant temperature and pressure time, decrease temperature and pressure speed, the brick body after steam press maintenance is through naturally cold But get product.
Step 4) in brick machine pressure in 218t, control adobe weight for 2.15kg, adobe size is according to solid brick gauge Very little 240mm*115mm*53mm is pressed.
Described increasing temperature and pressure speed, constant temperature and pressure temperature, constant temperature and pressure time, decrease temperature and pressure speed is specifically with 27 DEG C/h Speed steam pressure temperature in the kettle is slowly increased to 150 DEG C；Steam pressure temperature in the kettle is set to rise to 185.9 DEG C with the speed of 38 DEG C/h again, Now pressure was 1.1MPa in kettle, in this warm area heat-insulation pressure keeping 7-8 hours；Afterwards with the speed of 44 DEG C/h make temperature drop to 90 DEG C with Under, and in kettle pressure is down to normal pressure, now autoclave at high temperature maintaining process complete.
The autoclaved fly ash brick obtained by above method, its rupture strength is 3.40MPa, and compression strength is 15.50MPa, Meet standard JC/T 239-2014《Autoclaved fly ash brick》MU10 product requirements；Finished product External Exposure Index IRaIt is 0.05, external exposure Index IyIt is 0.05, meets GB 6566-2010《Radioactive material radionuclides limitation》Standard requirement.

Claims (5)

1. a kind of autoclaved fly ash brick of incorporation FCC dead catalyst, it is characterised in that by preparing by the raw material of following weight parts Into：15-20 parts of FCC dead catalyst, flyash 20-25 parts, 15-25 parts, aggregate chips 30-40 parts of thiocarbamide filter residue.
2. the autoclaved fly ash brick of FCC dead catalyst is mixed as claimed in claim 1, it is characterised in that described FCC is useless to be urged Agent is that granularity is 180~250 mesh；Described flyash is the three-level flyash arranged outside steam power plant's coal-powder boiler；Described thiocarbamide Filter residue the active calcium ion content is occupy thiocarbamide filter residue gross mass 40~50%；Aggregate chips is particle diameter in 3-8mm.
3. the method for preparing the autoclaved fly ash brick for mixing FCC dead catalyst as claimed in claim 1, it is characterised in that tool Body step is as follows：
1) according to metering part take thiocarbamide filter residue, by thiocarbamide device output after, by press filtration, washing filter cake, to thiocarbamide residual volume≤ 0.30%, containing wet≤38.00%, the active calcium ion content >=40.00%；
2) FCC dead catalyst being taken according to metering part, by itself and step 1) the thiocarbamide filter residue after treatment is mixed to get premix, then will The flyash and aggregate chips for measuring part are added in premix, obtain mixed material；
3) step 2) obtained by mixed material feeding mixer, external adding water is by spraying into mixer, the consumption of external adding water after atomization It is the 10~15% of dry material quality, after raw material fully enters mixer, starts timing, after stirring 30s, the raw material for mixing is unloaded Go out, and deliver to brick machine hopper；
4) compound sends into brick machine hopper through belt, starts brick machine, compressing；
5) step 4) obtained by shaping adobe, feeding still kettle carries out autoclave at high temperature maintenance, and steam-cured kettle is set by controller and heated up The rate of rise, constant temperature and pressure temperature, constant temperature and pressure time, decrease temperature and pressure speed, the brick body after steam press maintenance is through natural cooling Obtain finished product.
4. the preparation method of the autoclaved fly ash brick of FCC dead catalyst is mixed as claimed in claim 3, it is characterised in that step It is rapid 4) in brick machine pressure in 190-220t, control adobe weight for 1.90-2.20kg, adobe size is according to solid brick standard size 240mm*115mm*53mm is pressed.
5. the preparation method of the autoclaved fly ash brick of FCC dead catalyst is mixed as claimed in claim 3, it is characterised in that institute Increasing temperature and pressure speed, constant temperature and pressure temperature, constant temperature and pressure time, the decrease temperature and pressure speed stated are specifically with the speed of 25-35 DEG C/h Steam pressure temperature in the kettle is set to be slowly increased to 150 DEG C；Steam pressure temperature in the kettle is set to rise to 180-190 DEG C with the speed of 35-45 DEG C/h again, this When kettle in pressure be 1.1MPa, in this warm area heat-insulation pressure keeping 7-8 hours；Temperature is set to drop to 90 DEG C with the speed of 35-45 DEG C/h afterwards Hereinafter, and in kettle pressure is down to normal pressure, and now autoclave at high temperature maintaining process is completed.
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CN107459339A (en) * 2017-09-14 2017-12-12 黄河三角洲京博化工研究院有限公司 A kind of FCC dead catalyst lytag and its production method
CN110395924A (en) * 2019-07-29 2019-11-01 黄河三角洲京博化工研究院有限公司 A kind of high-strength baking-free ceramicite of thiocarbamide filter residue and preparation method thereof
CN110540435A (en) * 2019-09-25 2019-12-06 山东京博环保材料有限公司 autoclaved aerated concrete prepared by utilizing waste FCC catalyst and preparation method thereof
CN112174602A (en) * 2020-09-18 2021-01-05 山东京博环保材料有限公司 Mixture for concrete road base
CN112408928A (en) * 2020-10-12 2021-02-26 山东京博环保材料有限公司 High-strength roadbed concrete and preparation method thereof
CN113185200A (en) * 2021-05-19 2021-07-30 辽宁石油化工大学 Method for preparing geopolymer composite concrete pavement brick by using waste FCC (fluid catalytic cracking) catalyst

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Cited By (7)

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Publication number Priority date Publication date Assignee Title
CN107459339A (en) * 2017-09-14 2017-12-12 黄河三角洲京博化工研究院有限公司 A kind of FCC dead catalyst lytag and its production method
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CN110540435A (en) * 2019-09-25 2019-12-06 山东京博环保材料有限公司 autoclaved aerated concrete prepared by utilizing waste FCC catalyst and preparation method thereof
CN112174602A (en) * 2020-09-18 2021-01-05 山东京博环保材料有限公司 Mixture for concrete road base
CN112408928A (en) * 2020-10-12 2021-02-26 山东京博环保材料有限公司 High-strength roadbed concrete and preparation method thereof
CN113185200A (en) * 2021-05-19 2021-07-30 辽宁石油化工大学 Method for preparing geopolymer composite concrete pavement brick by using waste FCC (fluid catalytic cracking) catalyst

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