CN1101635A - Carbide powder coal ash block and its making method - Google Patents

Carbide powder coal ash block and its making method Download PDF

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Publication number
CN1101635A
CN1101635A CN93119036A CN93119036A CN1101635A CN 1101635 A CN1101635 A CN 1101635A CN 93119036 A CN93119036 A CN 93119036A CN 93119036 A CN93119036 A CN 93119036A CN 1101635 A CN1101635 A CN 1101635A
Authority
CN
China
Prior art keywords
coal ash
carbide powder
unslaked lime
component
gypsum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN93119036A
Other languages
Chinese (zh)
Inventor
乔家礼
郭洪坤
张维礼
杨敬海
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YINCHUAN MORTAR BRICK FACTORY NINGXIA HUI NATIONALITY AUTONAMOUS REGION
Original Assignee
YINCHUAN MORTAR BRICK FACTORY NINGXIA HUI NATIONALITY AUTONAMOUS REGION
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by YINCHUAN MORTAR BRICK FACTORY NINGXIA HUI NATIONALITY AUTONAMOUS REGION filed Critical YINCHUAN MORTAR BRICK FACTORY NINGXIA HUI NATIONALITY AUTONAMOUS REGION
Priority to CN93119036A priority Critical patent/CN1101635A/en
Publication of CN1101635A publication Critical patent/CN1101635A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/18—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mixtures of the silica-lime type
    • 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

Abstract

The building blocks are made with the main component parts of coal ash, lime stone, gypsum, magnesium oxide and water through a process of measuring, crushing, fine grinding, forming, natural curing and carbonization. The carbonizing process is carried out in a carbonizing chamber charged with the semi-finished blocks and filled with CO2 at a concentration of 7-12%, at a temperature of 40-60 degrees C and a humidity of 90% for 48-72 hours. The strength of the blocks gets more stabilized along with time. It has sound insulation, thermal insulation and antifrost properties.

Description

Carbide powder coal ash block and its making method
The present invention relates to a kind of walling unit for building and manufacture method thereof.
The common buildings fly ash building block is to be made by flyash, unslaked lime, gypsum, and forming method is to adopt vibratory compaction, band punching block atmospheric steam curing, owing to be the maintenance of band punching block, increased the punching block amount, the steaming apparatus investment is big, the consumption of coal height, and human and material resources consumption is many.The calcining of unslaked lime is to generate under 950 ℃ of-1200 ℃ of conditions in the building block, gives birth to the burning amount less than 15%, and burning content is greater than 5%, and loosely organized porous influences the quality of building block.Common fly ash building block is not owing to carry out carbonizing treatment and the long-term contact strength of airborne oxygen descends gradually, and later strength weakens.
The objective of the invention is some weak point, propose a kind of fly ash building block and manufacture method thereof, so that a kind of novel Highrise buildings materials for wall to be provided through carbonizing treatment at existing fly ash building block.
Technical scheme of the present invention is as follows.The main component of carbide powder coal ash block is flyash 50-60%, unslaked lime 12-18%, and gypsum 0.8-1.5%, magnesium oxide 1.5-3%, water 25-35% also can add a small amount of slag, and all the component summation is 100%.Each component is made product through metering, pulverizing, levigate, rolling, moulding, natural curing and carbonization and other processes.Adopt continous way batch mixing calcining process by limestone calcination unslaked lime, the weight ratio of coal and Wingdale is coal: Wingdale=6.5-7.5: 100, and fill factor 90% in the kiln, slow fire was smouldered 4-5 days under 850 ℃ of-1000 ℃ of conditions of temperature.Unslaked lime after the calcining measures respectively with gypsum, pulverizing, measure respectively with flyash, magnesium oxide, slag after levigate again and mix, send into wheel roller then and carry out rolling, begin to add a small amount of water-powered roller 2-3 minute, treat to add again after various materials evenly the water stone roller that wet, send into the shaper moulding behind the 3-7 branch.Work in-process natural curing after the moulding was sent into the carbonization chamber and is carried out carbonization about 20 hour, carbon dioxide was transported in the carbonization chamber CO 2Concentration is 7-12%, 40-60 ℃ of carbonization chambers temp, relative air humidity 90%, carbonization time 48-72 hour.The CO that carbonation process uses 2The CO that gas produces from the limestone kiln calcined lime 2Waste gas.
The present invention has following advantage:
1, the used unslaked lime of building block of the present invention is processed into through special process, and the building block after the natural curing makes its slip resistance and ultimate compression strength more stable with the prolongation that makes the phase, and has sound insulation, insulation and anti-freezing property through carbonizing treatment.
2, the present invention utilizes the CO in the limestone kiln 2Gas is the carbonization source of the gas, has utilized waste gas, has saved energy consumption and equipment, and has alleviated environmental pollution.
3, the production of building block of the present invention is not subjected to season and climatic influences, and can produce more than 300 days the whole year.
Embodiments of the invention are as follows:
One, the calcining of unslaked lime.The weight ratio of coal and Wingdale is a coal: Wingdale=6.5～7.5: 100, CaCO content in the Wingdale is more than 85%, anthracitic thermal value is 5000-7000 kilocalorie/kg, stacking factor about 90% after the material loading of kiln, adopt continous way batch mixing calcining process that air and the reverse heat exchange of material move toward one another are calcined, slow fire was smouldered 4-5 days under 850 ℃ of-1000 ℃ of conditions of temperature.The physicals of calcining unslaked lime: hydration time 28.5 minutes, 30.5 ℃ of hydration temperatures, proportion 2.8 gram/cm 2, loose content 0.94-1.04 gram/cm 3, grinding rate 4900 holes/cm 2, surplus is less than 15%.
Two, the requirement of other material:
Flyash: unit weight 480-570/ rice 3
Particle diameter 50-100 micron accounts for more than 50%
About sand grain content 85%
The capillary-size pore is about 70%
Leakage is 1.7 millimeters/hour
Gypsum: the CaO that requires to chemical ingredients is 32, SO 3Be 43, crystal water is 19.7.Proportion is 2.3-2.4.
Magnesium oxide: MgCO 3Generate high magnesia unslaked lime (MgO) through calcining and account for more than 20%, calcining temperature 600-900 ℃, hydration time is about 30 minutes, and hydration temperature is more than 40 ℃.
Three, each component material proportion, technological process
Flyash 500kg, unslaked lime 150kg, gypsum 10kg, magnesium oxide 20kg, water consumption in the whole operation of water 320kg().
Earlier with 150kg unslaked lime and the fragmentation of 10kg gypsum, put into wheel roller with 500kg flyash, 20kg magnesium oxide and suitable quantity of water again after levigate and carry out rolling, add a small amount of water-powered roller 2-3 minute earlier, treat to add again after various materials evenly the wet stone roller of water, send into the shaper moulding after 3-7 minute, the carbonization chamber is sent in the building block of moulding after 1 day natural curing.CO with the limestone kiln 2Gas arrives carbonization chamber, CO by blower fan and pipe-line transportation 2The concentration of gas is 7-12%, and the temperature of carbonization chamber is controlled at 40-60 ℃, need add water in the carbonization process, and relative air humidity is remained on about 90%, and carbonization time is 48-72 hour.At last, will be transported to the finished product field through the building block of carbonizing treatment stacks.

Claims (4)

1, a kind of carbide powder coal ash block and manufacture method thereof, the main component of building block is flyash, unslaked lime and gypsum, each component is made product through operations such as metering, pulverizing, levigate, rolling, moulding, natural curings, the component that it is characterized in that building block also is added with magnesium oxide, and the proportioning of each component is: flyash 50-60%, unslaked lime 12-18%, gypsum 0.8-1.5%, magnesium oxide 1.5-3%, water 25-35%, all the component summation is 100%; Increased carbonation process on operation, specific practice is that the work in-process after the natural curing are sent into the carbonization chamber, carbon dioxide is transported in the carbonization chamber CO 2Concentration is 7-12%, carbonization chambers temp 40-60%, relative air humidity 90%, carbonization time 48-72 hour.
2, carbide powder coal ash block according to claim 1 and manufacture method thereof, it is characterized in that calcining unslaked lime and adopt continous way batch mixing calcining process, the weight of coal and Wingdale, be coal stone lime stone=6.5～7.5: 100, fill factor 90% in the kiln, slow fire was smouldered 4-5 days under 850 ℃ of-1000 ℃ of conditions of temperature.
3, according to claim 1 and 2 described carbide powder coal ash block and manufacture method thereof, the unslaked lime grinding rate after it is characterized in that calcining is 4900 holes/cm 2Sieve, surplus is less than 15%.
4, carbide powder coal ash block according to claim 1 and manufacture method thereof, it is characterized in that materials such as flyash, unslaked lime, gypsum, magnesium oxide rolling operation after levigate metering added a small amount of water-powered roller 2-3 minute for material is sent in the wheel roller, treat to add again after various materials evenly the water stone roller that wet, send into the shaper moulding behind the 3-7 branch.
CN93119036A 1993-10-15 1993-10-15 Carbide powder coal ash block and its making method Pending CN1101635A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN93119036A CN1101635A (en) 1993-10-15 1993-10-15 Carbide powder coal ash block and its making method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN93119036A CN1101635A (en) 1993-10-15 1993-10-15 Carbide powder coal ash block and its making method

Publications (1)

Publication Number Publication Date
CN1101635A true CN1101635A (en) 1995-04-19

Family

ID=4992763

Family Applications (1)

Application Number Title Priority Date Filing Date
CN93119036A Pending CN1101635A (en) 1993-10-15 1993-10-15 Carbide powder coal ash block and its making method

Country Status (1)

Country Link
CN (1) CN1101635A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102600717A (en) * 2011-10-11 2012-07-25 韩秀峰 Method for utilizing carbon dioxide in flue gas
CN102614755A (en) * 2011-10-14 2012-08-01 韩天保 Method for collection, utilization and desulphuration of low-concentration carbon dioxide
CN103771780A (en) * 2014-01-01 2014-05-07 大连理工大学 Method for preparing building material products through hydration-carbonation coupling technique
CN106082939A (en) * 2016-06-14 2016-11-09 湖北工业大学 A kind of method utilizing industrial residue to prepare no-firing brick
CN106426534A (en) * 2015-08-13 2017-02-22 吉林省圣翔建材集团有限公司 Reaction device system allowing inorganic building materials to absorb carbon dioxide fast
WO2020015465A1 (en) * 2018-10-10 2020-01-23 河南理工大学 Building material product prepared using building gypsum and slaked lime, and preparation method for building material product
WO2023091528A1 (en) * 2021-11-16 2023-05-25 Carbonbuilt Methods and compositions for low-carbon concrete production using carbon dioxide and solid waste streams

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102600717A (en) * 2011-10-11 2012-07-25 韩秀峰 Method for utilizing carbon dioxide in flue gas
CN102600717B (en) * 2011-10-11 2014-10-29 韩秀峰 Method for utilizing carbon dioxide in flue gas
CN102614755A (en) * 2011-10-14 2012-08-01 韩天保 Method for collection, utilization and desulphuration of low-concentration carbon dioxide
CN102614755B (en) * 2011-10-14 2015-04-22 韩天保 Method for collection, utilization and desulphuration of low-concentration carbon dioxide
CN103771780A (en) * 2014-01-01 2014-05-07 大连理工大学 Method for preparing building material products through hydration-carbonation coupling technique
CN106426534A (en) * 2015-08-13 2017-02-22 吉林省圣翔建材集团有限公司 Reaction device system allowing inorganic building materials to absorb carbon dioxide fast
CN106082939A (en) * 2016-06-14 2016-11-09 湖北工业大学 A kind of method utilizing industrial residue to prepare no-firing brick
WO2020015465A1 (en) * 2018-10-10 2020-01-23 河南理工大学 Building material product prepared using building gypsum and slaked lime, and preparation method for building material product
WO2023091528A1 (en) * 2021-11-16 2023-05-25 Carbonbuilt Methods and compositions for low-carbon concrete production using carbon dioxide and solid waste streams

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