CN107857566A - A kind of preparation method of high intensity coal gangue baked brick - Google Patents

A kind of preparation method of high intensity coal gangue baked brick Download PDF

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Publication number
CN107857566A
CN107857566A CN201711171880.9A CN201711171880A CN107857566A CN 107857566 A CN107857566 A CN 107857566A CN 201711171880 A CN201711171880 A CN 201711171880A CN 107857566 A CN107857566 A CN 107857566A
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CN
China
Prior art keywords
coal gangue
powder
particle
brick
feldspar
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CN201711171880.9A
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Chinese (zh)
Inventor
高琳琳
王艳
张全河
李军
毕家林
石丽颖
许壮志
薛健
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LIAONING FAKU COUNTY CERAMIC ENGINEERING TECHNOLOGY RESEARCH CENTER
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LIAONING FAKU COUNTY CERAMIC ENGINEERING TECHNOLOGY RESEARCH CENTER
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Priority to CN201711171880.9A priority Critical patent/CN107857566A/en
Publication of CN107857566A publication Critical patent/CN107857566A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00Clay-wares
    • C04B33/02Preparing or treating the raw materials individually or as batches
    • C04B33/13Compounding ingredients
    • C04B33/132Waste materials; Refuse; Residues
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00Clay-wares
    • C04B33/02Preparing or treating the raw materials individually or as batches
    • C04B33/04Clay; Kaolin
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3427Silicates other than clay, e.g. water glass
    • C04B2235/3463Alumino-silicates other than clay, e.g. mullite
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656Aspects 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
    • C04B2235/6567Treatment time
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/60Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes

Abstract

A kind of preparation method of high intensity coal gangue baked brick, belongs to building ceramics pavior brick production technical field.It is made up of by mass percentage following component:Coal gangue particle 45 55%;Shale powder 35 45%;Feldspar powder 5 10%, and account for 13 15% water of above-mentioned three kinds of base materials quality summation.Extrusion molding, drying, sintering obtain gangue pavior brick after dispensing, mixing successively in order.Gangue utilization rate is high in this method, and the colliery wastes brick intensity of preparation is high, meets national standard《Sinter pavior brick》Requirement, performance indications are more preferable compared with current coal gangue baked brick;Compared with clay brick, its lower gangue utilization rate of production cost reaches 50%.

Description

A kind of preparation method of high intensity coal gangue baked brick
Technical field
The invention belongs to building ceramics pavior brick production technical field, and in particular to one kind improves coal gangue baked brick The method of intensity.
Background technology
Gangue is the accessory substance of coal mining, shows accumulative accumulation 4,500,000,000 in 2015 according to data, forms coal gangue hill More than 2600 seats, very big influence is caused to environment, have become one of four big solid waste of China.Currently with mode it is main There are generating, building materials, fill, reclaim, chemical products and new ceramics product etc..Wherein as construction material early in the seventies just Through rising, dosage is big, technique is simple, cost is relatively low, added value is higher, and major product has wall hollow brick, pavior brick, cement material Material, concrete etc..Addition addition in cement material is relatively low, 20% or so, otherwise can influence performance, made of stones using bastard coal The research of standby sintering pavior brick is relatively more, but really production forms the seldom of product, and not reaching index mainly due to intensity will Ask.
The content of the invention
In order to solve the above-mentioned technical problem, the invention provides a kind of side for improving gangue intensity and solid waste utilization rate Method.The present invention uses gangue as primary raw material, and broken certain particle size is as skeleton structure.Due to gangue plasticity compared with Difference, therefore powder is ground into using local shale and crosses 100 mesh sieves, as plastic raw material, ensure processability.And add a small amount of long Stone flour increases high-temperature liquid-phase, ensures the compactness of product.The method gangue utilization rate can reach 45-55%.
To achieve the above object, the present invention uses following technical proposals:Involved material presses quality in the preparation method Percentage is formed:
Coal gangue particle 45-55%;
Shale powder 35-45%;
Feldspar powder 5-10%.
And account for the 13-15% of above-mentioned three kinds of base materials quality summation water.
After mixing successively in order gangue pavior brick is obtained by extrusion molding, drying, sintering.
Further, by mass percentage, coal gangue particle included 8-16 mesh sieve particle 20-30%, crossed 16-40 mesh Particle 35-40% is sieved, crosses 40 mesh sieve particle 35-40%.
Further, shale powder and feldspar powder raw material granularity are the powder below 100 mesh.
Further, binding agent of the invention is water.
Further, the potassium sodium content in feldspar powder is 9-12%.
Specific production method:
(1) dispensing, mixing:Shale powder and feldspar powder are weighed according to ratio, stirred in agitator, is well mixed;According to Ratio weighs varigrained coal gangue particle, and two kinds of materials are poured into blender and are stirred, and adds water, stirs, Make pug that there is certain plasticity.
(2) it is molded:With vacuum screw extruder for shaping.
(3) dry:Drying temperature is 100 DEG C, and drying time is 2 hours.
(4) sinter:Sintered at a temperature of 1120-1150 DEG C, be incubated 1 hour.
The present invention the advantage is that compared with prior art:
1st, many of construction material are prepared currently with gangue, but for sintering the research of pavior brick and producing not More, subject matter is the standard that coal gangue baked brick intensity does not reach clay brick.The present invention is passed through using gangue and local shale Cross after rational formula and sinter the strength of sintered brick, water absorption rate and anti-freezing property index of preparation and reach GB/T 26001-2010《Sintering Pavior brick》Specified in F class standards (average strength is not less than 70MPa, and water absorption rate average value is not less than 6%, anti-freezing property 25 Dry mass loss is no more than 0.5%) after secondary cyclic test.
2nd, compared with the clay brick being widely used at present, gangue utilization rate 45-55% in coal gangue baked brick, and sinter Temperature is between 1120 DEG C -1150 DEG C, and 1200 DEG C of clay brick sintering temperature, therefore, coal gangue baked brick cost is relatively low, has more Price advantage.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention It is described in further detail.
Embodiment 1
The specific production method step of high intensity coal gangue baked brick is as follows:
(1) dispensing, mixing:Shale powder and feldspar powder are weighed according to ratio, stirred in agitator, is well mixed;According to Ratio weighs varigrained coal gangue particle, and two kinds of materials are poured into blender and are stirred, and adds water, stirs, Make pug that there is certain plasticity.
Specific formula is as follows by mass percentage:
Coal gangue particle 55%
Shale powder 40%
Feldspar powder 5%
And account for 14% water of above-mentioned three kinds of base materials quality summation.
Wherein, 1. by mass percentage, coal gangue particle included 8-16 mesh sieves particle 27%, crossed 16-40 mesh sieves Grain 37%, cross 40 mesh sieve particles 36%.
2. shale and feldspar raw material granularity are in the following powder of 100 mesh.Potassium sodium content in feldspar is 9%.
(2) it is molded:With vacuum screw extruder for shaping, 120*240*50mm sample brick base substrate is obtained.
(3) dry:Drying temperature is 100 DEG C, and drying time is 2 hours.
(4) sinter:Sintered at a temperature of 1150 DEG C, be incubated 1 hour.
Test result, water absorption rate 5.9%, compression strength 70MPa.
Embodiment 2
The specific production method step of high intensity coal gangue baked brick is as follows:
(1) dispensing, mixing:Shale powder and feldspar powder are weighed according to ratio, stirred in agitator, is well mixed;According to Ratio weighs varigrained coal gangue particle, and two kinds of materials are poured into blender and are stirred, and adds water, stirs, Make pug that there is certain plasticity.
Specific formula is as follows by mass percentage:
Coal gangue particle 45%;
Shale powder 45%;
Feldspar powder 10%.
And account for 15% water of above-mentioned three kinds of base materials quality summation
Wherein, 1. by mass percentage, coal gangue particle included 8-16 mesh sieves particle 27%, crossed 16-40 mesh sieves Grain 37%, cross 40 mesh sieve particles 36%.
2. shale and feldspar raw material granularity are in the following powder of 100 mesh.Potassium sodium content in feldspar is 9%.
(2) it is molded:With vacuum screw extruder for shaping, 120*240*50mm sample brick base substrate is obtained.
(3) dry:Drying temperature is 100 DEG C, and drying time is 2 hours.
(4) sinter:Sintered at a temperature of 1150 DEG C, be incubated 1 hour.
Test result, water absorption rate 5.1%, compression strength 75MPa.
Gangue and shale material composition are as shown in table 1 in above-described embodiment 1 and 2.
The starting material element constituent analysis table of table 1
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention God and any modification made within principle, equivalent substitution and improvement etc., should be included in the scope of the protection.

Claims (8)

  1. A kind of 1. preparation method of high intensity coal gangue baked brick, it is characterised in that:Stock up by mass percentage:Coal gangue particle 45-55%;Shale powder 35-45%;Feldspar powder 5-10%, and account for the 13-15% of above-mentioned three kinds of base materials quality summation Water, gangue pavior brick is obtained by extrusion molding, drying, sintering after mixing successively in order.
  2. 2. the preparation method of high intensity coal gangue baked brick as claimed in claim 1, it is characterised in that:By mass percentage Meter, coal gangue particle included 8-16 mesh sieve particle 20-30%, crossed 16-40 mesh sieve particle 35-40%, crossed 40 mesh sieve particle 35- 40%.
  3. 3. the preparation method of high intensity coal gangue baked brick as claimed in claim 1, it is characterised in that:The shale powder and length The granularity of stone flour is below 100 mesh.
  4. 4. the preparation method of high intensity coal gangue baked brick as claimed in claim 1, it is characterised in that:The binding agent is Water.
  5. 5. the preparation method of high intensity coal gangue baked brick as claimed in claim 1, it is characterised in that:In the feldspar powder Potassium sodium content is 9-12%.
  6. 6. the preparation method of high intensity coal gangue baked brick as claimed in claim 1, it is characterised in that specific production method:
    (1) dispensing, mixing:Shale powder and feldspar powder are weighed according to ratio, stirred in agitator, is well mixed;According to ratio Varigrained coal gangue particle is weighed, two kinds of materials are poured into blender and are stirred, water is added, stirs, make mud Material has certain plasticity;
    (2) it is molded:With vacuum screw extruder for shaping;
    (3) dry:Drying temperature is 100 DEG C, and drying time is 2 hours;
    (4) sinter:Sintered at a temperature of 1120-1150 DEG C, be incubated 1 hour.
  7. 7. the preparation method of the high intensity coal gangue baked brick as described in claim 1 or 6, it is characterised in that this method is to pass through What following specific steps were realized:
    (1) dispensing, mixing:Shale powder and feldspar powder are weighed according to ratio, stirred in agitator, is well mixed;According to ratio Varigrained coal gangue particle is weighed, two kinds of materials are poured into blender and are stirred, water is added, stirs, make mud Material has certain plasticity;
    Specific formula is as follows by mass percentage:Coal gangue particle 55%;Shale powder 40%;Feldspar powder 5%, and account for above-mentioned three 14% water of kind base material quality summation;
    Wherein, 1. by mass percentage, coal gangue particle included 8-16 mesh sieves particle 27%, crossed 16-40 mesh sieve particles 37%, cross 40 mesh sieve particles 36%;
    2. the potassium sodium content of shale and feldspar raw material granularity in the following powder of 100 mesh, feldspar is 9%;
    (2) it is molded:With vacuum screw extruder for shaping, 120*240*50mm sample brick base substrate is obtained;
    (3) dry:Drying temperature is 100 DEG C, and drying time is 2 hours;
    (4) sinter:Sintered at a temperature of 1150 DEG C, be incubated 1 hour, test result:Water absorption rate 5.9%, compression strength 70MPa.
  8. 8. the preparation method of the high intensity coal gangue baked brick as described in claim 1 or 6, it is characterised in that this method is to pass through What following specific steps were realized:
    (1) dispensing, mixing:Shale powder and feldspar powder are weighed according to ratio, stirred in agitator, is well mixed;According to ratio Varigrained coal gangue particle is weighed, two kinds of materials are poured into blender and are stirred, water is added, stirs, make mud Material has certain plasticity;
    Specific formula is as follows by mass percentage:Coal gangue particle 45%;Shale powder 45%;Feldspar powder 10%, and account for above-mentioned 15% water of three kinds of base material quality summations;
    Wherein, 1. by mass percentage, coal gangue particle included 8-16 mesh sieves particle 27%, crossed 16-40 mesh sieve particles 37%, cross 40 mesh sieve particles 36%;
    2. the potassium sodium content of shale and feldspar raw material granularity in the following powder of 100 mesh, feldspar is 9%;
    (2) it is molded:With vacuum screw extruder for shaping, 120*240*50mm sample brick base substrate is obtained;
    (3) dry:Drying temperature is 100 DEG C, and drying time is 2 hours;
    (4) sinter:Sintered at a temperature of 1150 DEG C, be incubated 1 hour, test result:Water absorption rate 5.1%, compression strength 75MPa.
CN201711171880.9A 2017-11-22 2017-11-22 A kind of preparation method of high intensity coal gangue baked brick Pending CN107857566A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50143806A (en) * 1974-05-09 1975-11-19
CN1785879A (en) * 2005-04-20 2006-06-14 贾守富 Sintered brick produced by sludge fly ash shale coal gangue and its preparation technology
CN101182184A (en) * 2007-02-16 2008-05-21 杨伟苗 Environment-friendly brick and method for manufacturing same
CN101386521A (en) * 2008-10-21 2009-03-18 武汉理工大学 Method for preparing environment friendly ceramic gaged brick by Yellow River sediment
CN106747601A (en) * 2016-12-09 2017-05-31 济南大学 A kind of house refuse permeable pavement brick and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50143806A (en) * 1974-05-09 1975-11-19
CN1785879A (en) * 2005-04-20 2006-06-14 贾守富 Sintered brick produced by sludge fly ash shale coal gangue and its preparation technology
CN101182184A (en) * 2007-02-16 2008-05-21 杨伟苗 Environment-friendly brick and method for manufacturing same
CN101386521A (en) * 2008-10-21 2009-03-18 武汉理工大学 Method for preparing environment friendly ceramic gaged brick by Yellow River sediment
CN106747601A (en) * 2016-12-09 2017-05-31 济南大学 A kind of house refuse permeable pavement brick and preparation method thereof

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Application publication date: 20180330