CN107162616A - Cement kiln coal injection pipe front end modular tile and its production method - Google Patents

Cement kiln coal injection pipe front end modular tile and its production method Download PDF

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Publication number
CN107162616A
CN107162616A CN201710453590.7A CN201710453590A CN107162616A CN 107162616 A CN107162616 A CN 107162616A CN 201710453590 A CN201710453590 A CN 201710453590A CN 107162616 A CN107162616 A CN 107162616A
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China
Prior art keywords
parts
injection pipe
weight
coal injection
cement kiln
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CN201710453590.7A
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Chinese (zh)
Inventor
袁林
李沅锦
李全有
慕松林
郑建立
曹伟
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ZHENGZHOU RUITAI REFRACTORY MATERIALS TECHNOLOGY Co Ltd
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ZHENGZHOU RUITAI REFRACTORY MATERIALS TECHNOLOGY Co Ltd
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Priority to CN201710453590.7A priority Critical patent/CN107162616A/en
Publication of CN107162616A publication Critical patent/CN107162616A/en
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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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
    • C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
    • C04B35/185—Mullite 3Al2O3-2SiO2
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/38—Non-oxide ceramic constituents or additives
    • C04B2235/3817—Carbides
    • C04B2235/3826—Silicon carbides
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54—Particle size related information
    • C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54—Particle size related information
    • C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/602—Making the green bodies or pre-forms by moulding
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/606—Drying
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
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    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6562—Heating rate
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    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Products (AREA)

Abstract

The invention belongs to fire resisting material field, it is related to a kind of cement kiln coal injection pipe front end modular tile and its production method.Raw material composition including following portions by weight, 45 60 parts of aggregate, 37 45 parts of powder, 45 parts of bonding agent, it is made by following steps, 45 60 parts of aggregates are weighed by weight, it is 45 parts of low sodium Ludox mixed grind 35 minutes to add parts by weight thereto, add the powder that parts by weight are 37 45 parts, and continue mixed grind and obtain semi-finished product pug in 57 minutes, step semi-finished product pug is pressed into adobe by friction press, after adobe is spontaneously dried 24 hours, dried 24 hours under the conditions of 110 DEG C, adobe after drying is calcined in high temperature kiln through 1,350 1450 DEG C, programming rate is in 8 10 DEG C/h in control high temperature kiln, calcine and can obtain within 36 48 hours cement kiln coal injection pipe front end modular tile, the modular tile has erosion-resisting characteristics good, high abrasion resistance, thermal shock resistance is high, the low advantage of the porosity, the problem of solving unstable using the cement kiln coal injection pipe service life of castable preparation.

Description

Cement kiln coal injection pipe front end modular tile and its production method
Technical field
The invention belongs to fire resisting material field, and in particular to a kind of cement kiln coal injection pipe front end modular tile and its producer Method.
Background technology
Use enhanced burning technique more in the cement plant, yield is improved by improving kiln body rotating speed, increasing injecting coal quantity etc., these Measure had both improved the heat utilization efficiency and production efficiency of the kiln, refractory material condition of work in kiln is more deteriorated so that alkali, The harmful substances such as chlorine, sulphur are enriched with, and concentration is improved, chemical erosion is serious；Kiln flame temperature is of a relatively high, fluctuate larger, heat Stress increase.At kilneye and coal injection pipe position, thousands of ton clinkers and a large amount of fuel pass through daily, cause mechanical wear and powder Dirt airflow scouring, kiln body faster rotational speed, injecting coal quantity are increased, and cause vibration and mechanical stress destruction.
And castable is used cement kiln coal injection pipe position at present more, the service life of common coal injection pipe 3 to 8 months is not Deng, such life-span can not meet the demand of client, and the main cause for influenceing its life-span is that current castable wears no resistance, heat Stability is poor, and properties are unstable, and workability is poor, castable segregation easily occurs, and stomata is more, and gas cell distribution is uneven The shortcomings of.
The content of the invention
It is an object of the invention to solve prior art problem, thus provide a kind of cement kiln coal injection pipe front end modular tile and Its production method
The present invention is achieved through the following technical solutions：A kind of cement kiln coal injection pipe front end modular tile, including it is following The raw material of parts by weight, 45-60 parts of aggregate, 37-45 parts of powder, 4-5 parts of bonding agent.
Preferably, raw material of the aggregate including following portions by weight is constituted, 50-55 parts of alumine, 0-5 parts of silica sand, 0-5 parts of silicon-carbide particle.
Preferably, the aggregate includes the raw material of following portions by weight, and granularity is 0-1mm 10-15 parts of fused mullite, Granularity is 1-3mm 20-25 parts of fused mullite, and granularity is 3-5mm 20-25 parts of fused mullite.
Preferably, the powder includes the raw material of following portions by weight, and granularity is 0-0.074mm fused mullite 30- 35 parts, granularity is 0-0.074mm 7-10 parts of carborundum.
Preferably, the bonding agent is low sodium Ludox.
The production method of a kind of cement kiln coal injection pipe front end modular tile, it is characterised in that comprise the following steps：
(1) aggregate is weighed：The fused mullite that 10-15 parts of granularities are 0-1mm, 20-25 parts of granularities are weighed by weight For 1-3mm fused mullite, 20-25 parts of granularities are 3-5mm fused mullite and are mixed uniform；
(2) powder is weighed：The fused mullite that 30-35 parts of granularities are 0-0.074mm, 7-10 parts of grains are weighed by weight Spend 0-0.074mm carborundum and be mixed uniform；
(3) aggregate in 45-60 parts of steps (1) is weighed by weight, parts by weight is added thereto low for 4-5 parts Sodium Ludox mixed grind 3 minutes；
(4) to the powder added in step (3) during parts by weight are 37-45 part steps (2), and continue mixed grind 5 minutes must To semi-finished product pug；
(5) the semi-finished product pug in step (4) is pressed into adobe by friction press；
(6) after the adobe in step (5) is spontaneously dried 24 hours, dried 24 hours under the conditions of 110 DEG C；
(7) adobe after drying is calcined in high temperature kiln through 1350-1450 DEG C, programming rate is in 8- in control high temperature kiln 10 DEG C/h, calcining can obtain cement kiln coal injection pipe front end modular tile in 36-48 hours.
The beneficial effects of the present invention are：The modular tile of the present invention can well substitute traditional castable and prepare cement kiln spray Coal pipe, the modular tile is using rigorous proportioning and the production method of science, with erosion-resisting characteristics is good, high abrasion resistance, anti-thermal shock Performance is high, the low advantage of the porosity, easy construction, solves the cement kiln coal injection pipe service life shakiness prepared using castable The problem of determining so that the service life of cement kiln coal injection pipe reached with refractory brick in kiln it is synchronous, reduce maintenance stop kiln number of times, produce Higher economic benefit is given birth to.
Embodiment
Technical solution of the present invention and technique effect are specifically described below according to specific embodiment.
Embodiment 1
Embodiment 1
Aggregate is prepared first：Weigh 10kg granularities be 0-1mm fused mullite, 20kg granularities for 1-3mm sintering not Carry out stone, 20kg granularities are 3-5mm fused mullite and are mixed uniform.
Next prepares powder：Weigh the fused mullite that 30kg granularities are 0-0.074mm, 7kg granularities 0-0.074mm carbon SiClx is simultaneously mixed uniform.
Then 45kg aggregates are weighed, 4kg low sodium Ludox mixed grind are added thereto 3 minutes, 37kg powder is added, And continue mixed grind and obtain semi-finished product pug in 5 minutes, semi-finished product pug is pressed into adobe by friction press, adobe is done naturally After dry 24 hours, dried 24 hours under the conditions of 110 DEG C, the adobe after drying calcined in high temperature kiln through 1350-1450 DEG C, Programming rate is in 8 DEG C/h in high temperature kiln, and calcining obtains cement kiln coal injection pipe front end modular tile for 36 hours.Cement kiln in the embodiment The performance indications of coal injection pipe front end modular tile are as shown in subordinate list one.
Embodiment 2
Aggregate is prepared first：Weigh 12kg granularities be 0-1mm fused mullite, 21kg granularities for 1-3mm sintering not Carry out stone, 22kg granularities are 3-5mm fused mullite and are mixed uniform.
Next prepares powder：Weigh the fused mullite that 32kg granularities are 0-0.074mm, 8kg granularities 0-0.074mm carbon SiClx is simultaneously mixed uniform.
Then 50kg aggregates are weighed, 4kg low sodium Ludox mixed grind are added thereto 4 minutes, 40kg powder is added, And continue mixed grind and obtain semi-finished product pug in 5 minutes, semi-finished product pug is pressed into adobe by friction press, adobe is done naturally After dry 24 hours, dried 24 hours under the conditions of 110 DEG C, the adobe after drying calcined in high temperature kiln through 1350-1450 DEG C, Programming rate is in 9 DEG C/h in high temperature kiln, and calcining can obtain cement kiln coal injection pipe front end modular tile in 40 hours.The embodiment reclaimed water The performance indications of stall coal injection pipe front end modular tile are as shown in subordinate list one.
Embodiment 3
Aggregate is prepared first：Weigh 13kg granularities be 0-1mm fused mullite, 22kg granularities for 1-3mm sintering not Carry out stone, 23kg granularities are 3-5mm fused mullite and are mixed uniform.
Next prepares powder：Weigh the fused mullite that 33kg granularities are 0-0.074mm, 8kg granularities 0-0.074mm carbon SiClx is simultaneously mixed uniform.
Then 55kg aggregates are weighed, 4kg low sodium Ludox mixed grind are added thereto 4 minutes, 41kg powder is added, And continue mixed grind and obtain semi-finished product pug in 6 minutes, semi-finished product pug is pressed into adobe by friction press, adobe is done naturally After dry 24 hours, dried 24 hours under the conditions of 110 DEG C, the adobe after drying calcined in high temperature kiln through 1350-1450 DEG C, Programming rate is in 9 DEG C/h in high temperature kiln, and calcining can obtain cement kiln coal injection pipe front end modular tile in 43 hours.The embodiment reclaimed water The performance indications of stall coal injection pipe front end modular tile are as shown in subordinate list one.
Embodiment 4
Aggregate is prepared first：Weigh 15kg granularities be 0-1mm fused mullite, 25kg granularities for 1-3mm sintering not Carry out stone, 25kg granularities are 3-5mm fused mullite and are mixed uniform.
Next prepares powder：The fused mullite that 35kg granularities are 0-0.074mm is weighed, 10kg granularities 0-0.074mm's Carborundum is simultaneously mixed uniform.
Then 60kg aggregates are weighed, 5kg low sodium Ludox mixed grind are added thereto 5 minutes, 45kg powder is added, And continue mixed grind and obtain semi-finished product pug in 7 minutes, semi-finished product pug is pressed into adobe by friction press, adobe is done naturally After dry 24 hours, dried 24 hours under the conditions of 110 DEG C, the adobe after drying calcined in high temperature kiln through 1350-1450 DEG C, Programming rate is in 10 DEG C/h in high temperature kiln, and calcining can obtain cement kiln coal injection pipe front end modular tile in 48 hours.In the embodiment The performance indications of cement kiln coal injection pipe front end modular tile are as shown in subordinate list one.
The performance indications of the cement kiln coal injection pipe front end modular tile of subordinate list one
The performance indications of cement kiln coal injection pipe front end modular tile as shown in subordinate list one, the cement kiln coal injection pipe that the present invention is provided Front end modular tile has cold crushing strength height, the porosity is low, erosion-resisting characteristics is good, high abrasion resistance, and thermal shock resistance is high Advantage, cold crushing strength >=100MPa, apparent porosity≤19%, bulk density is in 2.5-2.7g/cm3, soft DEG C of lotus (0.2Mpa) >=1700 DEG C, thermal shock (1100 DEG C of water coolings) >=20 times, wearing coefficient is 6.7-6.9cc.
Wherein embodiment 3 is the present invention preferably embodiment, and the combination brick product of the embodiment is fine and close, and bulk density exists 2.7g/cm3, cold crushing strength >=100MPa, the porosity is low, and apparent porosity≤18%, high temperature resistant property is excellent, soft DEG C of lotus (0.2Mpa) >=1800MPa, thermal shock resistance is high, thermal shock (1100 DEG C of water coolings) >=22 times, high abrasion resistance, and wearing coefficient is 6.7cc。
For the ordinary skill in the art, simply the present invention is exemplarily described for specific embodiment, The obvious present invention, which is implemented, to be not subject to the restrictions described above, and is entered as long as employing the inventive concept and technical scheme of the present invention The improvement of capable various unsubstantialities, or it is not improved by the present invention design and technical scheme directly apply to other occasions , within protection scope of the present invention.

Claims (5)

1. a kind of cement kiln coal injection pipe front end modular tile, it is characterised in that：Raw material including following portions by weight, aggregate 45-60 Part, 37-45 parts of powder, 4-5 parts of bonding agent.
2. cement kiln coal injection pipe front end modular tile according to claim 1, it is characterised in that：The aggregate includes following weight The raw material of number, granularity is 0-1mm 10-15 parts of fused mullite, and granularity is 1-3mm 20-25 parts of fused mullite, granularity For 3-5mm 20-25 parts of fused mullite.
3. cement kiln coal injection pipe front end modular tile according to claim 1, it is characterised in that：The powder includes following weight The raw material of number, granularity is 0-0.074mm 30-35 parts of fused mullite, and granularity is 0-0.074mm 7-10 parts of carborundum.
4. cement kiln coal injection pipe front end modular tile according to claim 1, it is characterised in that：The bonding agent is that low sodium silicon is molten Glue.
5. a kind of production method for preparing cement kiln coal injection pipe front end modular tile described in claim 1-4, it is characterised in that including Following steps：
(1) aggregate is weighed：The fused mullite that 10-15 parts of granularities are 0-1mm is weighed by weight, and 20-25 parts of granularities are 1- 3mm fused mullite, 20-25 parts of granularities are 3-5mm fused mullite and are mixed uniform；
(2) powder is weighed：The fused mullite that 30-35 parts of granularities are 0-0.074mm, 7-10 parts of granularity 0- are weighed by weight 0.074mm carborundum is simultaneously mixed uniform；
(3) aggregate in 45-60 parts of steps (1) is weighed by weight, and the low sodium silicon that parts by weight are 4-5 parts is added thereto Colloidal sol mixed grind 3-5 minutes；
(4) to the powder added in step (3) during parts by weight are 37-45 parts of steps (2), and continue mixed grind and obtain for 5-7 minutes Semi-finished product pug；
(5) the semi-finished product pug in step (4) is pressed into adobe by friction press；
(6) after the adobe in step (5) is spontaneously dried 24 hours, dried 24 hours under the conditions of 110 DEG C；
(7) adobe after drying is calcined in high temperature kiln through 1350-1450 DEG C, programming rate is in 8-10 in control high temperature kiln DEG C/h, calcining 36-48 hours is that can obtain cement kiln coal injection pipe front end modular tile.
CN201710453590.7A 2017-06-15 2017-06-15 Cement kiln coal injection pipe front end modular tile and its production method Pending CN107162616A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113698232A (en) * 2021-08-19 2021-11-26 武汉钢铁有限公司 Low-temperature carbon sleeve resistant to ammonia gas corrosion and abrasion and production method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103204692A (en) * 2013-05-10 2013-07-17 郑州瑞泰耐火科技有限公司 Novel lightweight mullite brick and fabrication method thereof
CN103351168A (en) * 2013-05-10 2013-10-16 郑州瑞泰耐火科技有限公司 Novel mullite brick and preparation method thereof

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CN103204692A (en) * 2013-05-10 2013-07-17 郑州瑞泰耐火科技有限公司 Novel lightweight mullite brick and fabrication method thereof
CN103351168A (en) * 2013-05-10 2013-10-16 郑州瑞泰耐火科技有限公司 Novel mullite brick and preparation method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113698232A (en) * 2021-08-19 2021-11-26 武汉钢铁有限公司 Low-temperature carbon sleeve resistant to ammonia gas corrosion and abrasion and production method thereof
CN113698232B (en) * 2021-08-19 2023-07-18 武汉钢铁有限公司 Low-temperature carbon sleeve resistant to ammonia corrosion and abrasion and production method thereof

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Application publication date: 20170915