CN106746817A - A kind of microwave sintering method of granite stone powder haydite - Google Patents
A kind of microwave sintering method of granite stone powder haydite Download PDFInfo
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- CN106746817A CN106746817A CN201710082343.0A CN201710082343A CN106746817A CN 106746817 A CN106746817 A CN 106746817A CN 201710082343 A CN201710082343 A CN 201710082343A CN 106746817 A CN106746817 A CN 106746817A
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- stone powder
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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
- 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
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/027—Lightweight materials
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- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of microwave sintering method of granite stone powder haydite, the raw material composition of granite stone powder haydite is by mass percentage：Granite stone powder 60% ~ 80%, red mud 10% ~ 30%, ooze 0% ~ 29%, high-carbon cinder 0% ~ 20%, microwave induced dose 0.15% ~ 0.3%.The high performance ceramsite made, bulk density is 430 ~ 1200kg/m3, apparent density is 850 ~ 1700kg/m3, water absorption rate is 5% ~ 19%, cylindrical compress strength 3.5MPa ~ 9.5 MPa.Industrial solid wastes red mud that ocean sludge and aluminium manufacturer produced by discarded granite stone powder of the raw material that uses of the present invention produced by processing of stone factory, ocean desilting and subway work are discharged etc., waste utilization rate reaches more than 95%；Using microwave sintering method, efficiency high is sintered, and sintering energy consumption 20% ~ 30% can be saved, with preferable social and economic benefit.
Description
Technical field
The invention belongs to Material Field, and in particular to one kind is sintered with granite stone powder as major ingredient using microwave sintering method
The method of high performance spherical haydite.
Background technology
In recent years, with large span, the fast development of skyscraper, the research of Performance of High-Performance Lightweight Aggregate Concrete causes all the more
Concern and attention, while bringing unprecedented market prospects to light-weight aggregate.Just because of light-weight aggregate is porous, light weight uniqueness
Structure, imparts a series of good characteristics such as light aggregate concrete high-strength light, insulation.And haydite is because of many of its own
Excellent properties, make it have the irreplaceable effect of other materials, show one's talent in light-weight aggregate, are widely used in light-weight aggregate
In concrete.Particularly Lightness this important performance, is their ability to replace the main cause of heavy sandstone.At present, China's life
Produce haydite to be mainly clay and flyash is raw material, and uses the fuel type rotary kiln of traditional highly energy-consuming, high pollution, no
Meet the strategy of sustainable development.The raw materials for production and production equipment of haydite are restricted, the bottleneck as high performance ceramsite production.
On the other hand, developing rapidly with building stone processing industry, China turned into stone material production the biggest in the world,
Consume and big export country, the waste stone powder that stone mining, process are produced is also increasing, be piled into mountain, cause serious
Problem of environmental pollution, while reversely govern the sustainable development of stone material industry.Comprehensive utilization on waste stone powder, both at home and abroad
Existing many researchs, mainly make the research in terms of ceramics, sheet material, coating and stone dust brick with waste stone powder（Liang Yueqing, allows
Waste stone powder is changed into building material [J] Fujian building materials, 2006 (1):9-11.）, and make haydite with it and rarely have research, especially
It is that granite stone powder utilization rate is extremely low.The production high performance ceramsite such as clay, flyash is replaced to have with granite stone powder huge
Market potential, had both realized the recycling of waste stone powder, and the production of high performance ceramsite is promoted again.
Heating using microwave is heated simultaneously from material inside each several part, is heating in one kind.Microwave sintering is new as one kind
Efficient sintering processing, with cleaning, efficiently, low energy consumption and the advantages of homogeneous heating（Loupy A.Microwaves in
Organic Sythesis. New York:John Wiley,2002,61-63）, it is widely used in ceramic industry, but
It is just at the early-stage in haydite production.Tianjin Chenjian University's Liu Han bridges in 2013 etc. fly to be use of gathering materials with medical refuse burning ash
Microwave Sintering Techniques, have invented a kind of " method of the winged microwave baking ceramsite of medical refuse burning ash（ZL
201310642646.5）", not smoothgoing guard of Wuhan University of Technology in 2015 etc. is sent out with bottom mud in lake and municipal sludge using microwave sintering
" the method for preparing light ceramic using bottom mud in lake and municipal sludge microwave sintering of understanding（ZL 201510406696.2 ）", plus
The fast paces of microwave technology sintering ceramsite.But the research of granite stone powder haydite is sintered with microwave method at present, at home foreign language
Present and do not saw.
The high performance ceramsite of green, environmental protection, energy-conservation is prepared using microwave sintering granite stone powder, be can be widely applied to
In the cast-in-place and prefabricated components such as lightweight aggregate concrete, self-compaction thermal insulation concrete.
The content of the invention
A kind of high performance ceramsite is provided it is an object of the invention to microwave method sintering granite stone powder, it has height simultaneously
By force, the premium properties such as lightweight, insulation, waterproof, fire resisting, antidetonation, freeze proof and alkali resistant aggregate reaction, and its level matches somebody with somebody excellent, can
It is widely used in the cast-in-place and prefabricated components such as lightweight aggregate concrete, self-compaction thermal insulation concrete.
To achieve the above object, the present invention is adopted the following technical scheme that：
A kind of microwave sintering method of granite stone powder haydite includes two aspects of material component and preparation technology：
High performance ceramsite raw material composition is that each component consumption is by mass percentage：Granite stone powder 60% ~ 80%, red mud
10% ~ 30%, ooze 0% ~ 29%, high-carbon cinder 0% ~ 20%, microwave induced dose 0.15% ~ 0.3%；Carbon content is big in the high-carbon cinder
In 20wt%；Described microwave induced dose is nanoscale ZrO2。
Its preparation method is comprised the following steps：
1) water washing and precipitating method is used, i.e., flushing is stirred to the granite stone powder containing impurity with upright shaft stirring machine, will rinsed
The stone flour slurries for going out enter sedimentation basin and are precipitated, and to remove the impurity in granite stone powder, obtain particle diameter and are less than 0.08mm's
Granite stone powder sediment；
2) granite stone powder sediment, red mud, ooze are dehydrated respectively, dried, drying and processing；
3) high-carbon cinder is ground in ball mill and obtains dry powder of the particle diameter less than 0.06mm；
4) by microwave induced dose and 3）Gains stir 2 ~ 3min in dry-mixed mixer, it is stirred；
5) will be through 2）The granite stone powder for the treatment of, red mud, ooze are added separately in blending bunker and 4）Gained dry powder blend simultaneously adds
Water stirs 10 ~ 15min, makes its water content control in 9 ~ 16wt%；
6) by 5）The compound extrusion ball forming machine for obtaining is squeezed into the raw material ball that particle diameter is 10 ~ 15mm；
7) raw material ball is put into the micro-wave oven that frequency is 2.45GHZ, is carried out with the programming rate of 10 DEG C/min~15 DEG C/min
Continuous warming dries 20min ~ 25min to 300 DEG C ~ 450 DEG C；Connected with the programming rate of 20 DEG C/min~30 DEG C/min again
It is continuous to be warming up to 1050 DEG C ~ 1250 DEG C, it is calcined 5min ~ 40min；750 DEG C are then cooled to immediately, is finally cooled, obtain granular-grade
The spherical high performance ceramsite matched somebody with somebody.
Raw material described in such scheme is granite stone powder, the ooze of coastal region and aluminium manufacturer's discharge of processing of stone factory
Red mud, sample will be collected and separated, dried, crushed and Homogenization Treatments, chemical composition is as shown in table 1.
Chemical composition analysis/the wt% of the raw material of table 1
Research shows, SiO2 With Al2O3Content be the principal element to form haydite intensity, especially Al2O3Content to strong
The influence of degree.The SiO of sintering ceramsite2Content is about 40% ~ 60%, Al2O3About 15% ~ 25%.During production high-strength ceramic granule, Al2O3's
Content can properly increase 3% ~ 11%.When making haydite only with granite stone powder in the present invention, due to SiO in granite stone powder2
Content it is high, and Al2O3And Fe2O3Content it is low, cause sintering temperature too high and balling-up be difficult, while sintering out haydite
Cylindrical compress strength is relatively low.And SiO in red mud2Content it is relatively low, Al2O3Content it is high.To reduce sintering temperature, improve into ball
Border, increases the cylindrical compress strength of haydite, is mixed with appropriate red mud, by rational with comparison SiO2 With Al2O3、Fe2O3Deng contain
Amount is adjusted.
Though the working condition of granite stone powder haydite is improved because mixing red mud, the plasticity of compound is not obtained
Very big raising, while the sensing to microwave is not obvious.It is further proportion optimizing, is mixed with appropriate ooze and microwave induced
Agent, takes full advantage of the plasticity of ooze and the NaCl of its high content（1.06%）Decomposed Deng under heating using microwave electromagnetic field effect
The microwave heating effect produced by a large amount of electrically charged dipole polar group for going out, with reference to microwave induced dose of effect, effectively drops
Sintering temperature and low, improves sintering velocity, and improve balling-up condition.
The high-carbon cinder mixed in the present invention（Carbon content is more than 20wt%）It is giving up for aero-crete factory's Gas-making Furnace discharge
Slag, it is therefore intended that further reduce sintering energy consumption using the spontaneous combustion of wherein coal, while suitably mitigating the apparent close of sintering ceramsite
Degree, compensate for because of the low defect of granite stone powder compound frothing percentage.
The high performance ceramsite made by such scheme, bulk density is 430 ~ 1200kg/m3, apparent density be 850 ~
1700kg/m3, water absorption rate is 5% ~ 19%, cylindrical compress strength 3.5MPa ~ 9.5 MPa.
Above-mentioned sintering ceramsite technology has good Social benefit and economic benefit.First, the raw material for using adds for stone material
The work of ocean sludge produced by discarded granite stone powder, ocean desilting and subway work and the aluminium manufacturer discharge produced by factory
Industry solid waste red mud etc., waste utilization rate reaches more than 95%, with good social benefit.Secondly, using microwave sintering
Method, sinters efficiency high, and can save sintering energy consumption 20% ~ 30%, with preferable economic benefit.
Specific embodiment
To make content of the present invention easily facilitate understanding, with reference to specific embodiment to technology of the present invention
Scheme is described further, but the present invention is not limited only to this.
Embodiment 1
1) impurity washed with water in precipitation method removing granite stone powder obtains granite stone powder sediment of the particle diameter less than 0.08mm；
2) granite stone powder sediment, red mud are dehydrated respectively, dried, drying and processing；
3) red mud of the granite stone powder of 75 weight portions and 25 weight portions is added and 12min is added water and stirred to blending bunker, made
Its water content control is in 11wt%；
4) by 3）The compound extrusion ball forming machine for obtaining is squeezed into the raw material ball that particle diameter is 10 ~ 15mm；
5) raw material ball is put into the micro-wave oven that frequency is 2.45GHZ, continuous warming is carried out extremely with the programming rate of 10 DEG C/min
300 DEG C, dry 20min；Continuous warming to 1050 DEG C is carried out with the programming rate of 20 DEG C/min again, 5min is calcined；Immediately then
750 DEG C are cooled to, is finally cooled, obtain the spherical haydite of grain composition.
The haydite made by such scheme, bulk density is 680kg/m3, apparent density is 1120kg/m3, water absorption rate is
11%, the MPa of cylindrical compress strength 4.7.This haydite cylindrical compress strength is relatively low, can be used in non-bearing type concrete.
Embodiment 2
1) impurity washed with water in precipitation method removing granite stone powder reaches granite stone powder sediment of the particle diameter less than 0.08mm；
2) granite stone powder sediment, red mud, ooze are dehydrated respectively, dried, drying and processing；
3) 3min is stirred in dry-mixed mixer by microwave induced dose of the ooze of 10 weight portions and 0.2 weight portion, stirs it
Uniformly；
4) will be through 2）The granite stone powder of 64.8 weight portions for the treatment of, the red mud of 25 weight portions and with 3）Gained material is added to batch mixing
12min is added water and stirred in storehouse, makes its water content control in 11wt%；
5) by 4）The compound extrusion ball forming machine for obtaining is squeezed into the raw material ball that particle diameter is 10 ~ 15mm；
6) raw material ball is put into the micro-wave oven that frequency is 2.45GHZ, continuous warming is carried out extremely with the programming rate of 12 DEG C/min
400 DEG C, dry 22min；Continuous warming to 1150 DEG C is carried out with the programming rate of 25 DEG C/min again, 25min is calcined；Immediately then
750 DEG C are cooled to, is finally cooled, obtain the high performance spherical haydite of grain composition.
The high performance ceramsite made by such scheme, bulk density is 620kg/m3, apparent density is 980kg/m3, inhale
Water rate is 10.5%, cylindrical compress strength 6.5MPa.This haydite cylindrical compress strength is higher, can be used in bearing type insulation concrete.
Embodiment 3
1) impurity washed with water in precipitation method removing granite stone powder reaches granite stone powder sediment of the particle diameter less than 0.08mm；
2) granite stone powder sediment, red mud, ooze are dehydrated respectively, dried, drying and processing；
3) high-carbon cinder is ground in ball mill and obtains dry powder of the particle diameter less than 0.06mm；
4) by microwave induced dose of 0.2 weight portion and through 3）The high-carbon cinder of 9.8 weight portions for the treatment of is in dry-mixed mixer
Stirring 3min, makes it stir；
5) will be through 2）Granite stone powder, the ooze of the red mud of 15 weight portions and 15 weight portions and 4 of 60 weight portions for the treatment of）Gained
Dry powder adds the stirring 15min that added water to blending bunker, makes its water content control in 16wt%；
6) by 5）The compound extrusion ball forming machine for obtaining is squeezed into the raw material ball that particle diameter is 10 ~ 15mm；
7) raw material ball is put into the micro-wave oven that frequency is 2.45GHZ, continuous warming is carried out extremely with the programming rate of 15 DEG C/min
450 DEG C, dry 25min；Continuous warming to 1250 DEG C is carried out with the programming rate of 30 DEG C/min again, 40min is calcined；Immediately then
750 DEG C are cooled to, is finally cooled, obtain the spherical haydite of grain composition.
The high performance ceramsite made by such scheme, bulk density is 580kg/m3, apparent density is 850kg/m3, inhale
Water rate is 9.8%, cylindrical compress strength 7.0MPa.This haydite cylindrical compress strength is higher, and density is small, can be used for high-strength bearing type insulation and mixes
In solidifying soil.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to scope of the present invention patent with
Modification, should all belong to covering scope of the invention.
Claims (5)
1. a kind of granite stone powder haydite, it is characterised in that：The raw material composition of the granite stone powder haydite is by mass percentage
It is calculated as：Granite stone powder 60% ~ 80%, red mud 10% ~ 30%, ooze 0% ~ 29%, high-carbon cinder 0% ~ 20%, microwave induced dose 0.15% ~
0.3%。
2. granite stone powder haydite according to claim 1, it is characterised in that：Carbon content is more than in the high-carbon cinder
20wt%。
3. granite stone powder haydite according to claim 1, it is characterised in that：Described microwave induced dose is nanoscale ZrO2。
4. the microwave sintering method of a kind of granite stone powder haydite as described in claim 1-3 is any, it is characterised in that：Prepare
Method is comprised the following steps：
1）Using water washing and precipitating method, i.e., flushing is stirred to the granite stone powder containing impurity with upright shaft stirring machine, will rinsed
The stone flour slurries for going out enter sedimentation basin and are precipitated, and to remove the impurity in granite stone powder, obtain particle diameter and are less than 0.08mm's
Granite stone powder sediment；
2）Granite stone powder sediment, red mud, ooze are dehydrated respectively, are dried, drying and processing；
3）High-carbon cinder is ground in ball mill and obtains dry powder of the particle diameter less than 0.06mm；
4）By microwave induced dose and 3）Gains stir 2 ~ 3min in dry-mixed mixer, it is stirred；
5）Will be through 2）The granite stone powder for the treatment of, red mud, ooze are added separately in blending bunker and 4）Gained dry powder blend simultaneously adds
Water stirs 10 ~ 15min, makes its water content control in 9 ~ 16wt%；
6）By 5）The compound extrusion ball forming machine for obtaining is squeezed into the raw material ball that particle diameter is 10 ~ 15mm；
7）Raw material ball is put into the micro-wave oven that frequency is 2.45GHZ, is carried out with the programming rate of 10 DEG C/min~15 DEG C/min
Continuous warming dries 20min ~ 25min to 300 DEG C ~ 450 DEG C；Connected with the programming rate of 20 DEG C/min~30 DEG C/min again
It is continuous to be warming up to 1050 DEG C ~ 1250 DEG C, it is calcined 5min ~ 40min；750 DEG C are then cooled to immediately, is finally cooled, obtain granular-grade
The spherical high performance ceramsite matched somebody with somebody.
5. the microwave sintering method of granite stone powder haydite according to claim 4, it is characterised in that：The spherical property high of gained
The bulk density of energy haydite is 430 ~ 1200kg/m3, apparent density is 850 ~ 1700kg/m3, water absorption rate is 5% ~ 19%, cylinder pressure
It is 3.5MPa ~ 9.5 MPa to spend.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445556A (en) * | 2017-09-08 | 2017-12-08 | 济南大学 | A kind of granite waste stone dust haydite pervious concrete and preparation method thereof |
| CN107445646A (en) * | 2017-09-08 | 2017-12-08 | 济南大学 | A kind of granite waste stone dust haydite and preparation method thereof |
| CN110526682A (en) * | 2019-08-24 | 2019-12-03 | 金顺来(厦门)建筑材料开发有限公司 | A kind of foaming stone material insulation board and preparation method thereof |
| CN110668791A (en) * | 2019-10-18 | 2020-01-10 | 耿振华 | Building material prepared from granite sawn mud and method thereof |
| CN111116210A (en) * | 2019-12-30 | 2020-05-08 | 同济大学 | Method for preparing light ceramsite by utilizing biological coal ecological sintering waste soil |
| CN111689767A (en) * | 2020-06-11 | 2020-09-22 | 内蒙古华宸再生资源科技有限公司 | Method for producing functional material based on granite, product and application |
| CN111747772A (en) * | 2020-06-11 | 2020-10-09 | 内蒙古华宸再生资源科技有限公司 | Selenium-rich multi-element functional ceramsite and preparation method thereof |
| CN113319096A (en) * | 2021-04-23 | 2021-08-31 | 中国铝业股份有限公司 | Method for preparing low-alkali red mud by using ultrasonic wave and microwave synergistic dry method red mud solid alkali and red mud solid alkali enhancer |
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| CN101967063B (en) * | 2009-07-28 | 2012-06-06 | 鞍钢集团矿业公司 | Ceramsite prepared from high-silicon fine iron tailings and preparation method thereof |
| CN105753353A (en) * | 2016-01-27 | 2016-07-13 | 天津城建大学 | Microwave sintering method of high-apparent density aggregate |
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2017
- 2017-02-16 CN CN201710082343.0A patent/CN106746817B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101967063B (en) * | 2009-07-28 | 2012-06-06 | 鞍钢集团矿业公司 | Ceramsite prepared from high-silicon fine iron tailings and preparation method thereof |
| CN105753353A (en) * | 2016-01-27 | 2016-07-13 | 天津城建大学 | Microwave sintering method of high-apparent density aggregate |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445556A (en) * | 2017-09-08 | 2017-12-08 | 济南大学 | A kind of granite waste stone dust haydite pervious concrete and preparation method thereof |
| CN107445646A (en) * | 2017-09-08 | 2017-12-08 | 济南大学 | A kind of granite waste stone dust haydite and preparation method thereof |
| CN107445556B (en) * | 2017-09-08 | 2020-04-17 | 济南大学 | Granite waste stone powder ceramsite pervious concrete and preparation method thereof |
| CN110526682A (en) * | 2019-08-24 | 2019-12-03 | 金顺来(厦门)建筑材料开发有限公司 | A kind of foaming stone material insulation board and preparation method thereof |
| CN110668791A (en) * | 2019-10-18 | 2020-01-10 | 耿振华 | Building material prepared from granite sawn mud and method thereof |
| CN111116210A (en) * | 2019-12-30 | 2020-05-08 | 同济大学 | Method for preparing light ceramsite by utilizing biological coal ecological sintering waste soil |
| CN111116210B (en) * | 2019-12-30 | 2021-05-11 | 同济大学 | Method for preparing light ceramsite by utilizing biological coal ecological sintering waste soil |
| CN111689767A (en) * | 2020-06-11 | 2020-09-22 | 内蒙古华宸再生资源科技有限公司 | Method for producing functional material based on granite, product and application |
| CN111747772A (en) * | 2020-06-11 | 2020-10-09 | 内蒙古华宸再生资源科技有限公司 | Selenium-rich multi-element functional ceramsite and preparation method thereof |
| CN113319096A (en) * | 2021-04-23 | 2021-08-31 | 中国铝业股份有限公司 | Method for preparing low-alkali red mud by using ultrasonic wave and microwave synergistic dry method red mud solid alkali and red mud solid alkali enhancer |
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