CN102936108A - Preparation method of ceramsite - Google Patents
Preparation method of ceramsite Download PDFInfo
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- CN102936108A CN102936108A CN2012104293479A CN201210429347A CN102936108A CN 102936108 A CN102936108 A CN 102936108A CN 2012104293479 A CN2012104293479 A CN 2012104293479A CN 201210429347 A CN201210429347 A CN 201210429347A CN 102936108 A CN102936108 A CN 102936108A
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- preparation
- roasting
- haydite
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- pellet
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- 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 invention discloses a preparation method of ceramsite. The preparation method is characterized in that the ceramsite comprises 62%-68% of boric sludge, 14%-18% of green shale and 17%-21% of fly ash. The preparation method includes the steps of matching, crushing and grinding, stirring, pelletizing and calcining, wherein a dedicated rotary kiln is adopted for calcining, a first drum is a preheating kiln with a revolving speed of 1.5-4.5rpm, and a second drum is a calcining kiln with a revolving speed of 1.2-3.7rpm. The preparation method has the advantages that the prepared ceramsite is small in volume weight, high in strength, low in thermal conductivity, resistant to high temperature, good in chemical stability and the like.
Description
Technical field
The present invention relates to building material field, particularly a kind of preparation method of haydite.
Background technology
Boron mud is built the chemical plant as smelting and is extracted residuum behind the borax from crude boron stone, distributes in China very wide, and be larger source of pollution, 1 ton of borax of every production is approximately discharged 4～5 tons of boron mud.Green shale is the waste residue of surface mines lift-off processing, and outward appearance is deep green, is laminate structure, and the softer easy-weathering of quality has plasticity-, and the mud suspension of making is good, is difficult for precipitation.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide a kind of preparation method's of haydite preparation method.
Proportioning raw materials of the present invention is as follows: the boron cement content is 62%～68%, and green shale content is 14%～18%, and fly ash content is 17%～21%.
Optimum proportioning raw materials is as follows: the boron cement content is 65%, and green shale content is 16%, and fly ash content is 19%.
Above proportioning is determined according to the following principle of test basis: the firing range that, is made into material is wider, and softening temperature is beneficial to production control greater than 60 ℃.Two, burning not spalling of haydite out.Three, burning haydite swelling rate out is greater than 1.8.
Making step of the present invention comprises:
(1) batching
(2) fragmentation and grinding
Disintegrating apparatus adopts jaw crusher, and grinding adopts two storehouses ball mill, and rotating speed is 30 rev/mins, and it is 4900 hole sizers that the grinding of boron mud, green shale, flyash requires, and tails between 20～35%.
(3) stir
Feed adopts the control of disk feeding machine.The disk feeding machine has the disk of rotation, and material is got off by hopper, is scraped the controlled material speed of making of scraper plate depth of penetration by a scraper plate.Add water and stir in compound, water content is adjusted to 20%, stirs and adopts biaxial rneader.
(4) balling-up
Special roll-type nodulizer is adopted in balling-up, and a pair of in relative rotation cylinder is arranged in the roll-type nodulizer, is distributed with the circular hole hole on the cylinder, and the aperture is 12～14 millimeters.When two rollers relatively rotated, the powders such as boron mud, green shale, flyash were extruded by hole, because the effect of deadweight fractures, became the short cylindrical shape haydite idiosome with certain grating at inwall.
Arrange three scraper in cylindrical shell, kink by counterweight balance, does not rotate with axle on axle, with cylindrical shell speed of relative movement is arranged.A squeezed embryo bar part of coming is cut off by scraper, and a part fractures by deadweight.
(5) roasting
Special-purpose rotary kiln is adopted in roasting, and the rotary kiln technical data is as follows: first is preheating kiln, and rotating speed is 1.5～4.5 rev/mins.Second is roasting kiln, and rotating speed is 1.2～3.7 rev/mins.
The thermal regulation that roasting is taked is: preliminary preheating temperature is 300～500 ℃ in the pellet opening for feed, and be 3～5 minutes warm up time; Pellet preheating section high temperature preheating decomposition temperature is 700～780 ℃, and be 20～30 minutes warm up time; The pellet maturing temperature is 1200～1300 ℃, and the pellet roasting time is 5～8 minutes.
Firing section atmosphere is oxidizing atmosphere.
The present invention has advantages of that unit weight is little, intensity is large, thermal conductivity is low, high temperature resistant, chemical stability good.
Embodiment
The present embodiment proportioning is as follows: the boron cement content is 65%, and green shale content is 16%, and fly ash content is 19%.
The present embodiment making step comprises:
(1) batching
(2) fragmentation and grinding
Disintegrating apparatus adopts jaw crusher, and grinding adopts two storehouses ball mill, and rotating speed is 30 rev/mins, and it is 4900 hole sizers that the grinding of boron mud, green shale, flyash requires, and tails between 20～35%.
(3) stir
For guaranteeing proportioning, feed adopts the control of disk feeding machine.The disk feeding machine has the disk of rotation, and material is got off by hopper, is scraped the controlled material speed of making of scraper plate depth of penetration by a scraper plate.Add water and stir in compound, water content is adjusted to 20%, stirs and adopts biaxial rneader.
(4) balling-up
Special roll-type nodulizer is adopted in balling-up, and a pair of in relative rotation cylinder is arranged in the roll-type nodulizer, is distributed with the circular hole hole on the cylinder, and the aperture is 12～14 millimeters.When two rollers relatively rotated, the powders such as boron mud, green shale, flyash were extruded by hole, because the effect of deadweight fractures, became the short cylindrical shape haydite idiosome with certain grating at inwall.
For further improving mixture gradation, in cylindrical shell, arrange three scraper, kink by counterweight balance, does not rotate with axle on axle, with cylindrical shell speed of relative movement is arranged.A squeezed embryo bar part of coming is cut off by scraper, and a part fractures by deadweight, thereby better grating is arranged.
(5) roasting
Special-purpose rotary kiln is adopted in roasting, and the rotary kiln technical data is as follows: first is preheating kiln, and rotating speed is 1.5～4.5 rev/mins.Second is roasting kiln, and rotating speed is 1.2～3.7 rev/mins.
The thermal regulation that roasting is taked is: preliminary preheating temperature is 300～500 ℃ in the pellet opening for feed, and be 3～5 minutes warm up time; Pellet preheating section high temperature preheating decomposition temperature is 700～780 ℃, and be 20～30 minutes warm up time; The pellet maturing temperature is 1200～1300 ℃, and the pellet roasting time is 5～8 minutes.
Maturing temperature and time should be according to material composition, material grain shape and size, forming method and the reasonable test and Selection such as water content, kiln shape and medium atmosphere.In certain temperature range, rate of expansion raise to increase with temperature, and temperature is crossed low then giving birth to and burnt, excess Temperature, and then excessive the and reduced viscosity of liquid phase causes gas to escape in a large number, and haydite is well expanded.Roasting time also has similar impact to the expansion of haydite.
Preheating is to expect that for reducing grain enters suddenly thermal zone the variation because temperature is rapid and bursts, and also prepares for the roasting of getting angry simultaneously.Preheating temperature can not be too high long, prevents that gas from overflowing too early.
Firing section atmosphere is oxidizing atmosphere.Although coal gangue haydite roasting in reducing atmosphere is higher than the coefficient of expansion of roasting in oxidizing atmosphere, the expansion temperature scope of roasting in reducing atmosphere is narrower, is unfavorable for operation control.And the haydite shell that burns till in oxidizing atmosphere is harder, and strength ratio is higher.
Table 1 haydite physical technique index
The present embodiment haydite physical technique index is as shown in table 1, and the indexs such as the cylindrical compress strength of reflection haydite, water-intake rate, frost resistance, stability are all good in the table.
Claims (6)
1. the preparation method of a haydite, it is characterized in that proportioning is as follows: the boron cement content is 62%～68%, and green shale content is 14%～18%, and fly ash content is 17%～21%.
Making step comprises:
(1) batching
(2) fragmentation and grinding
Disintegrating apparatus adopts jaw crusher, and grinding adopts two storehouses ball mill, and rotating speed is 30 rev/mins, and it is 4900 hole sizers that the grinding of boron mud, green shale, flyash requires, and tails between 20～35%.
(3) stir
Add water and stir in compound, water content is adjusted to 20%, stirs and adopts biaxial rneader.
(4) balling-up
Special roll-type nodulizer is adopted in balling-up, and a pair of in relative rotation cylinder is arranged in the roll-type nodulizer, is distributed with the circular hole hole on the cylinder, and the aperture is 12～14 millimeters; When two rollers relatively rotated, the powders such as boron mud, green shale, flyash were extruded by hole, because the effect of deadweight fractures, became the short cylindrical shape haydite idiosome with certain grating at inwall.
(5) roasting
Special-purpose rotary kiln is adopted in roasting, and the rotary kiln technical data is as follows: first is preheating kiln, and rotating speed is 1.5～4.5 rev/mins.Second is roasting kiln, and rotating speed is 1.2～3.7 rev/mins.
2. the preparation method of haydite according to claim 1, it is characterized in that optimal proportion is: the boron cement content is 65%, and green shale content is 16%, and fly ash content is 19%.
3. the preparation method of haydite according to claim 1 is characterized in that feed adopts the control of disk feeding machine, and the disk feeding machine has the disk of rotation, and material is got off by hopper, is scraped the controlled material speed of making of scraper plate depth of penetration by a scraper plate.
4. the preparation method of haydite according to claim 1 is characterized in that arranging in the roll-type nodulizer cylindrical shell three scraper, and kink by counterweight balance, does not rotate with axle on axle, with cylindrical shell speed of relative movement is arranged; A squeezed embryo bar part of coming is cut off by scraper, and a part fractures by deadweight.
5. the preparation method of haydite according to claim 1 is characterized in that the thermal regulation that roasting is taked is: preliminary preheating temperature is 300～500 ℃ in the pellet opening for feed, and be 3～5 minutes warm up time; Pellet preheating section high temperature preheating decomposition temperature is 700～780 ℃, and be 20～30 minutes warm up time; The pellet maturing temperature is 1200～1300 ℃, and the pellet roasting time is 5～8 minutes.
6. the preparation method of haydite according to claim 1 is characterized in that firing section atmosphere is oxidizing atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210429347.9A CN102936108B (en) | 2012-10-19 | 2012-10-19 | Preparation method of ceramsite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210429347.9A CN102936108B (en) | 2012-10-19 | 2012-10-19 | Preparation method of ceramsite |
Publications (2)
| Publication Number | Publication Date |
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| CN102936108A true CN102936108A (en) | 2013-02-20 |
| CN102936108B CN102936108B (en) | 2014-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210429347.9A Expired - Fee Related CN102936108B (en) | 2012-10-19 | 2012-10-19 | Preparation method of ceramsite |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106278176A (en) * | 2016-08-09 | 2017-01-04 | 山东京博控股股份有限公司 | A kind of high-strength ceramic granule and preparation method thereof |
| TWI686363B (en) * | 2019-04-09 | 2020-03-01 | 陳豪吉 | Textile sludge reproduction-based light-weight pellet material, preparation method and manufacturing system thereof |
| CN113999042A (en) * | 2021-12-11 | 2022-02-01 | 抚顺矿业集团有限责任公司工程技术研究中心 | Foamed ceramic prepared from oil shale waste residues and green shale and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87106563A (en) * | 1987-10-05 | 1988-04-27 | 刘太和 | Method for roller pelletizing of raw material and device thereof |
| CN101298381A (en) * | 2008-06-20 | 2008-11-05 | 杨普安 | Light aggregate shale porcelain granule and production method thereof |
| CN102092994A (en) * | 2010-11-25 | 2011-06-15 | 大连恒翔粉煤灰综合利用有限公司 | Fly ash sintering-free ceramsite |
| CN102295468A (en) * | 2011-06-17 | 2011-12-28 | 天津市天运轻集料建材厂 | Sintered aggregate production line and preparation method for sintered aggregate |
-
2012
- 2012-10-19 CN CN201210429347.9A patent/CN102936108B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87106563A (en) * | 1987-10-05 | 1988-04-27 | 刘太和 | Method for roller pelletizing of raw material and device thereof |
| CN101298381A (en) * | 2008-06-20 | 2008-11-05 | 杨普安 | Light aggregate shale porcelain granule and production method thereof |
| CN102092994A (en) * | 2010-11-25 | 2011-06-15 | 大连恒翔粉煤灰综合利用有限公司 | Fly ash sintering-free ceramsite |
| CN102295468A (en) * | 2011-06-17 | 2011-12-28 | 天津市天运轻集料建材厂 | Sintered aggregate production line and preparation method for sintered aggregate |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106278176A (en) * | 2016-08-09 | 2017-01-04 | 山东京博控股股份有限公司 | A kind of high-strength ceramic granule and preparation method thereof |
| CN106278176B (en) * | 2016-08-09 | 2019-03-12 | 山东京博环保材料有限公司 | A kind of high-strength ceramic granule and preparation method thereof |
| TWI686363B (en) * | 2019-04-09 | 2020-03-01 | 陳豪吉 | Textile sludge reproduction-based light-weight pellet material, preparation method and manufacturing system thereof |
| CN113999042A (en) * | 2021-12-11 | 2022-02-01 | 抚顺矿业集团有限责任公司工程技术研究中心 | Foamed ceramic prepared from oil shale waste residues and green shale and preparation method thereof |
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| CN102936108B (en) | 2014-01-01 |
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Owner name: WENZHOU JINYU CONSTRUCTION SUPERVISION + MANAGEMEN Free format text: FORMER OWNER: YE XIANGZHU Effective date: 20131122 |
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Effective date of registration: 20131122 Address after: 7 building, No. 325000, CCB building, No. 1701 Airport Avenue, Longwan District, Zhejiang, Wenzhou Applicant after: Wenzhou Jinyu Construction Supervision & Management Co., Ltd. Address before: 325000 Wenzhou City, Ouhai province Jingshan Hill group of the building of the 302 room, room 11, Zhejiang Applicant before: Ye Xiangzhu |
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Granted publication date: 20140101 Termination date: 20161019 |