CN103964720A - Preparation method of high-strength and low-density pore-closed vitrified micro bubbles - Google Patents
Preparation method of high-strength and low-density pore-closed vitrified micro bubbles Download PDFInfo
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- CN103964720A CN103964720A CN201410148724.0A CN201410148724A CN103964720A CN 103964720 A CN103964720 A CN 103964720A CN 201410148724 A CN201410148724 A CN 201410148724A CN 103964720 A CN103964720 A CN 103964720A
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Abstract
The invention provides a preparation method of high-strength and low-density pore-closed vitrified micro bubbles, which is characterized by comprising the following steps: material selecting; crushing and grading; infiltrating and assisting in dissolving; drying, preheating, dehydrating, and dispersing; hollow vitrifying; collecting; sorting; inspecting. With the adoption of the preparation method provided by the invention, the melting rate of perlite ore powder is accelerated, spheroidization of the ore powder is facilitated on account of overcoming the influence of the gravity factor, the spheroidal effect of the vitrified micro bubbles is good, the energy utilization rate is high, the pelletization rate is high and the effect of the vitrified micro bubbles is excellent.
Description
Technical field
The present invention relates to closed pore glass bead, be specifically related to a kind of preparation method of high-strength low-density closed pore glass bead.
Background technology
Closed pore glass bead uses as light filling aggregate and Jue Re ﹑ Fang Huo ﹑ Xi Yin ﹑ lagging material in numerous areas.In building material industry, with glass bead as aglite, can improve mortar with easy mobility and certainly anti-intensity, reduce wood property shrinking percentage, improve product over-all properties, reduce comprehensive production cost.Use oil well cement as light-weight additive at oil gas well cementing job.Closed pore glass bead is evenly to be expanded from inside to outside after vertical riser type of heating is issued to certain temperature by the perlite ore that has certain particle diameter; expanded granular surface is again through moment high temperature vitreous; after cooling, form the particle surface of continuous glass materialization, and inside is keeping complete porous, hollow hollow structure.Unique mode of production has determined that product has kept the purity of perlite natural inorganic Chemical Composition.This product structure characteristic is that particle surface is microtriche pore and is continuous glass materialization gloss, and inside presents the several or small spherical accumulation of dozens of, and color and luster is pure white.Product unit weight is distributed in 110～350kg/ cube, size-grade distribution is at 5～1500 μ m, the excellent specific property such as have light weight, thermal insulation, fire prevention, high-low temperature resistant, anti-aging, water-intake rate is little, chemical stability is good is a kind of environment-friendly type high performance novel inorganic light weight insulating material.
At present, on market, preparing closed pore glass bead is mainly taking perlite breeze as raw material, enters into pearl stove after drying and preheating again.Cheng Zhulu is made up of multiple sections of heating, and perlite breeze is heated piecemeal, makes the gradual expanded by heating of breeze; there is a flow softening process on breeze surface, is more conducive to form glassiness shell, favourable its surperficial vitreous; pore sealing, produces closed pore vitreous pearlite product.The flow process great majority of closed pore glass bead products production carry out according to pulverizing-sorting-drying and forewarm-nodularization-cooling-sorting-oven dry-packaging process, wherein, taking drying and forewarm, nodularization as important procedure, need priority control.The type of heating of balling furnace has electrically heated, heated by natural gas, heated by gas etc. several, wherein comparatively common with electrically heated and heated by natural gas.After perlite breeze drying and forewarm, generally deliver to balling furnace body of heater upper end by lift, breeze is fallen by body of heater upper end freely falling body, and in decline process, balling furnace post breeze carries out stepped heating.When glass bead drops to nodularization lower portion of furnace body, the glass bead being shaped is taken away and cooling at the rotoclone collector of lower portion of furnace body and cloth bag collector, simultaneously by the most of dust collection producing.Glass bead cooling and collect after by floating method by product separation out, and collect, dry, be packaged into finished product.
But the production unit ubiquity of present most of closed pore glass bead products some problems, as breeze rises to the release And Spread of Solute of upper of furnace body, how to accomplish even release, do not have adhesion caking to produce; Breeze effect shape molding due to gravity in the time that freely falling body declines is bad, is much the spherical of drops instead of rule, makes the vitrification point of product higher, and finished product ultimate compression strength is lower, can not meet the service requirements of product; Product in the time that body of heater fusing forms glassiness surface with the inner phenomenon that adhesion lumps etc. that produces of body of heater.The bead yield rate that a variety of causes of above making method causes is low, and product cost is higher, has all affected more significantly the yield rate of closed pore glass bead.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of preparation method of high-strength low-density closed pore glass bead; this preparation method can make the closed pore glass bead of diameter 50-250 μ m; and closed pore glass bead wall thickness is more even, forming shape is good, and ultimate compression strength is high.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of preparation method of high-strength low-density closed pore glass bead, adopts following steps:
(1). select materials: select bentonite content <10%, the coefficient of expansion is greater than 7-10 times of above I level perlite as basic material;
(2). crushing and classification: the perlite ore after meal is pulverized and levigate classification in superfine mill, and the particle size range of breeze used is between 5-15 μ m;
. infiltrate flux: by the breeze screening in saturation tank with Li
2cO
3water-soluble flux stirs and soaks, and treating compound is the Li of part by weight 1.3:1000
2cO
3with the full solution that closes of water, 20 DEG C of infiltration temperature <;
(4). drying and forewarm dewatered and dispersed:, deblock and disperse infiltrating breeze oven dry, preheating, the dehydration of fusing assistant with pneumatic drier, drying and forewarm dehydration temperaturre is 380-470 DEG C;
. hollow vitreous: by the breeze of having dried from becoming bottom-up conveying in pearl stove, swirling eddy in Cheng Zhulu drives powder to rise and stepped heating vitreous, hollow nodularization, the residence time of breeze in Cheng Zhulu, hollow nodularization temperature was 1050 DEG C-1150 DEG C in 10-15 second;
(6). collect: becoming pearl furnace roof portion that induced draft fan generation negative pressure is installed, making the microballon that vitreous completes increase and cooling hollow nodularization fast, using tornado dust collector and sack cleaner to reach the object of classification collection;
(7). sorting: utilize the gravity winnowing machine of product to adopt floating method to carry out sorting to cooled glass bead;
(8). inspection: the closed pore glass bead screening is sampled, check its ultimate compression strength, broken rate of grinding ball, size distribution, water-intake rate.
At I level perlite described above, its main chemical compositions requires as follows: SiO
270% ±, H
20 4-6%, Fe
2o
3<1%, Al
2o
312% ±, RO 1-1.3%, R
2o 6-8%(RO is CaO and MgO; R
2o is alkalimetal oxide K
2o and Na
2o; ).
The present invention adopts the preparation method of the designed a kind of high-strength low-density closed pore glass bead of technique scheme; can make the melting rate of perlite breeze accelerate; and impel breeze to complete nodularization in the impact that overcomes gravity factor; the nodularization of glass bead is effective; energy utilization rate is high; balling ratio is high, effective.
Brief description of the drawings
Fig. 1 represents high-strength low-density closed pore glass bead preparation method's of the present invention process flow sheet;
Fig. 2 represents the production unit structural representation that this preparation method adopts;
Fig. 3 represents the structural representation of the Cheng Zhulu that the present invention uses.
Embodiment
Below in conjunction with accompanying drawing, the preparation method of a kind of high-strength low-density closed pore of the present invention glass bead is done to concrete invention.
Referring to Fig. 1, Fig. 2, Fig. 3, high-strength low-density closed pore glass bead preparation method of the present invention, adopts following processing step:
(1). select materials: select bentonite content <10%, the coefficient of expansion is greater than 7-10 times of above I level perlite as basic material, and the perlitic main chemical compositions of I level requires as follows: SiO
270% ±, H
20 4-6%, Fe
2o
3<1%, Al
2o
312% ±, RO 1-1.3%, R
2o 6-8%.Wherein, RO is CaO and MgO, R
2o is alkalimetal oxide K
2o and Na
2o.
(2). crushing and classification: the perlite ore after meal is pulverized and levigate classification in superfine mill 1, and the particle size range of breeze used is between 5-15 μ m;
. infiltrate flux: by the breeze screening by transmitting device 2 in fusing assistant saturation tank 3 with Li
2cO
3water-soluble flux stirs and soaks, and treating compound is the Li of the about 1.3:1000 of part by weight
2cO
3with the full solution that closes of water, 20 DEG C of infiltration temperature <;
(4). drying and forewarm dewatered and dispersed: the breeze after infiltration is fluxed is transported to drying and forewarm continuous tunnel furnace 5 by transmitting device 4, breeze oven dry, preheating, the dehydration of fusing assistant will be infiltrated with drying and forewarm continuous tunnel furnace 5, deblock and disperse, drying and forewarm dehydration temperaturre is 380-470 DEG C;
(5). hollow vitreous: the breeze of having dried is entered into pearl stove 9 through collecting e Foerderanlage 6 by the opening for feed 7 that becomes pearl stove bottom; gas blower 8 is equipped with in opening for feed 7 bottoms makes breeze to becoming pearl stove 9 upper of furnace body to flow, and passes through the lifting height of the flow control breeze of controlling gas blower 8.Highly different spinning disk 14 and water conservancy diversion tracheae 15 are installed in the body of heater of Cheng Zhulu 9, the pressure reduction producing by compressed air ensures the air-flow rotation rising in localized area on request that contains breeze, breeze particulate is followed air-flow and is produced certain rotation in swirling eddy simultaneously, the ultrahigh-temperature resistive band 16 that different heights is provided with different quantities in body of heater is as heating unit, breeze is carried out to stepped heating, breeze is completed in molding time softening, vitreous, hollow nodularization, avoid the glass bead of melt surface to contact with Cheng Zhulu 9 stove inner side-walls or other article and form freezing of a furnace phenomenon.The nodularization time of breeze is according to the requirement of closed pore glass bead, and the residence time of breeze in Cheng Zhulu 9, final hollow nodularization temperature was 1050 DEG C-1150 DEG C in 10-15 second;
(6). collect: at Cheng Zhulu 9 tops, induced draft fan 13 is installed and produces negative pressure, make the microballon that vitreous completes rise and pass through the quick cooling hollow nodularization of refrigerating unit 10 on Cheng Zhulu 9 tops, use tornado dust collector 11 and sack cleaner 12 to reach the object that classification is collected;
(7). sorting: utilize the gravity winnowing machine of product to adopt floating method to carry out sorting to cooled glass bead;
(8). inspection: the closed pore glass bead screening is sampled, check its ultimate compression strength, broken rate of grinding ball, size distribution, water-intake rate.
The above-mentioned preparation method of the present invention can make the closed pore glass bead of diameter 50-250 μ m.
Cheng Zhulu 9 applicants of the present invention have applied for patent to this; application number is 201420160180.5; referring to Fig. 3; set gradually from top to bottom at the body of heater of Cheng Zhulu 9 powder delivery area, intensification heating zone, high temperature Shun Peng district, cooling zone and the output section that inner chamber connects; breeze particulate is to enter from this one-tenth pearl furnace bottom; under the effect that overcomes gravity; nodularization closed pore glass bead from becoming pearl furnace roof portion to obtain collection; the hollow glass micropearl wall thickness making is like this more even, and ultimate compression strength is greatly improved.
The present invention compares with traditional closed pore glass bead making method; in the time of breeze heating vitreous; by special Cheng Zhulu; breeze is moved to top by the bottom of Cheng Zhulu; make the wall thickness of each hollow glass micropearl more even; nodularization rate and the bead yield rate of frit micro mist are effectively improved; also significantly improve the ultimate compression strength of product; while is due to the effect of water conservancy diversion swirl-flow devices; well avoid furnace wall and the collision of other components and parts in glass microballon and the Cheng Zhulu of melting, effectively reduced the generation of freezing of a furnace and adhesion phenomenon.
Claims (3)
1. a preparation method for high-strength low-density closed pore glass bead, is characterized in that adopting following steps:
(1). select materials: select bentonite content <10%, the coefficient of expansion is greater than 7-10 times of above I level perlite as basic material;
(2). crushing and classification: the perlite ore after meal is pulverized and levigate classification in superfine mill, and the particle size range of breeze used is between 5-15 μ m;
. infiltrate flux: by the breeze screening in saturation tank with Li
2cO
3water-soluble flux stirs and soaks, and treating compound is the Li of part by weight 1.3:1000
2cO
3with the full solution that closes of water, 20 DEG C of infiltration temperature <;
(4). drying and forewarm dewatered and dispersed:, deblock and disperse infiltrating breeze oven dry, preheating, the dehydration of fusing assistant with pneumatic drier, drying and forewarm dehydration temperaturre is 380-470 DEG C;
. hollow vitreous: by the breeze of having dried from becoming bottom-up conveying in pearl stove, swirling eddy in Cheng Zhulu drives powder to rise and stepped heating vitreous, hollow nodularization, the residence time of breeze in Cheng Zhulu, hollow nodularization temperature was 1050 DEG C-1150 DEG C in 10-15 second;
(6). collect: becoming pearl furnace roof portion that induced draft fan generation negative pressure is installed, making the microballon that vitreous completes increase and cooling hollow nodularization fast, using tornado dust collector and sack cleaner to reach the object of classification collection;
(7). sorting: utilize the gravity winnowing machine of product to adopt floating method to carry out sorting to cooled glass bead;
(8). inspection: the closed pore glass bead screening is sampled, check its ultimate compression strength, broken rate of grinding ball, size distribution, water-intake rate.
2. the preparation method of a kind of high-strength low-density closed pore glass bead according to claim 1, is characterized in that prepared closed pore glass bead diameter is 50-250 μ m.
3. the preparation method of a kind of high-strength low-density closed pore glass bead according to claim 1, is characterized in that described I level perlite, and main chemical compositions is as follows: SiO
270% ±, H
20 4-6%, Fe
2o
3<1%, Al
2o
312% ±, RO 1-1.3%, R
2o 6-8%, wherein, RO is CaO and MgO, R
2o is alkalimetal oxide K
2o and Na
2o.
Priority Applications (1)
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|---|---|---|---|
| CN201410148724.0A CN103964720B (en) | 2014-04-15 | 2014-04-15 | A kind of preparation method of high-strength low-density closed pore glass bead |
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| CN201410148724.0A CN103964720B (en) | 2014-04-15 | 2014-04-15 | A kind of preparation method of high-strength low-density closed pore glass bead |
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| CN103964720B CN103964720B (en) | 2015-10-28 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104876465A (en) * | 2015-05-19 | 2015-09-02 | 蚌埠玻璃工业设计研究院 | Preparation method of superfine closed-pore vitrified microspheres |
| CN107586043A (en) * | 2017-09-06 | 2018-01-16 | 安徽凯盛基础材料科技有限公司 | Quan Haishen hollow glass micropearls and preparation method thereof |
| CN109437210A (en) * | 2018-12-29 | 2019-03-08 | 黄冈师范学院 | A kind of combustion gas counter-current produces the device and method of silica flour using quartz tail sand |
| CN110467367A (en) * | 2019-09-18 | 2019-11-19 | 贵州中能高新材料有限公司 | A kind of dedicated glass bead of gypsum |
| CN110773415A (en) * | 2019-10-24 | 2020-02-11 | 西安寒武纪石油科技有限公司 | Production process of well cementation ceramic hollow microspheres |
| CN112246195A (en) * | 2020-08-17 | 2021-01-22 | 凌岩 | Novel silicon dioxide microbead spheroidizing equipment and spheroidizing method thereof |
| CN112791829A (en) * | 2021-01-27 | 2021-05-14 | 徐公礼 | Production equipment and method for preparing hollow microspheres by using perlite |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101134651A (en) * | 2006-08-28 | 2008-03-05 | 北京华伟佳科技有限公司 | Process for making dilation vitrified microbead and rotary floating dilation vitrification furnace |
| CN101746984A (en) * | 2009-12-17 | 2010-06-23 | 绍兴市新科节能建材有限公司 | Preparation method of vitrified small ball |
-
2014
- 2014-04-15 CN CN201410148724.0A patent/CN103964720B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101134651A (en) * | 2006-08-28 | 2008-03-05 | 北京华伟佳科技有限公司 | Process for making dilation vitrified microbead and rotary floating dilation vitrification furnace |
| CN101746984A (en) * | 2009-12-17 | 2010-06-23 | 绍兴市新科节能建材有限公司 | Preparation method of vitrified small ball |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104876465A (en) * | 2015-05-19 | 2015-09-02 | 蚌埠玻璃工业设计研究院 | Preparation method of superfine closed-pore vitrified microspheres |
| CN107586043A (en) * | 2017-09-06 | 2018-01-16 | 安徽凯盛基础材料科技有限公司 | Quan Haishen hollow glass micropearls and preparation method thereof |
| CN109437210A (en) * | 2018-12-29 | 2019-03-08 | 黄冈师范学院 | A kind of combustion gas counter-current produces the device and method of silica flour using quartz tail sand |
| CN110467367A (en) * | 2019-09-18 | 2019-11-19 | 贵州中能高新材料有限公司 | A kind of dedicated glass bead of gypsum |
| CN110773415A (en) * | 2019-10-24 | 2020-02-11 | 西安寒武纪石油科技有限公司 | Production process of well cementation ceramic hollow microspheres |
| CN112246195A (en) * | 2020-08-17 | 2021-01-22 | 凌岩 | Novel silicon dioxide microbead spheroidizing equipment and spheroidizing method thereof |
| CN112791829A (en) * | 2021-01-27 | 2021-05-14 | 徐公礼 | Production equipment and method for preparing hollow microspheres by using perlite |
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| CN103964720B (en) | 2015-10-28 |
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Denomination of invention: Preparation method of high-strength and low-density pore-closed vitrified micro bubbles Effective date of registration: 20181024 Granted publication date: 20151028 Pledgee: Bank of China Limited by Share Ltd. Henan Oilfield Branch Pledgor: NANYANG HONGCHUANG PETROLEUM TECHNOLOGY DEVELOPMENT CO.,LTD. Registration number: 2018990000989 |
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Granted publication date: 20151028 |