CN103693944A - Aluminum-silicon lightweight aggregate based on low-voltage electric porcelain waste material and preparation method thereof - Google Patents
Aluminum-silicon lightweight aggregate based on low-voltage electric porcelain waste material and preparation method thereof Download PDFInfo
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- CN103693944A CN103693944A CN201310715136.6A CN201310715136A CN103693944A CN 103693944 A CN103693944 A CN 103693944A CN 201310715136 A CN201310715136 A CN 201310715136A CN 103693944 A CN103693944 A CN 103693944A
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The invention particularly relates to aluminum-silicon lightweight aggregate based on a low-voltage electric porcelain waste material and a preparation method thereof. The technical scheme comprises the following steps: by taking 40.0-80.0wt% of low-voltage electric porcelain waste material, 10.0-50.0wt% of fly ash and 10.0-30.0wt% of clay as raw materials, adding 400-900L of pore forming agent into per ton of raw materials, mixing, adding bonding agent accounting for 3.5-7.0wt% of the raw materials and water accounting for 11.0-17.0wt% of the raw materials, granulating, and molding; drying at 80-140 DEG C for 22-34h, and keeping the temperature at 1000-1300 DEG C for 2-12h, thus obtaining the aluminum-silicon lightweight aggregate based on a low-voltage electric porcelain waste material. The invention has the characteristics of simple process, resource saving and environment friendliness; the prepared aluminum-silicon lightweight aggregate has relatively high volume stability and compressive strength and relatively low volume density.
Description
Technical field
The invention belongs to aluminium silicon is aglite technical field, and being specifically related to a kind of aluminium silicon based on low tension electrical porcelain waste material is aglite and preparation method thereof.
Background technology
Electrotechnical ceramics (electroceramics) mainly refers to, for the insulating ceramic of high-low pressure transmitting line and power station and various electrical appliances, also claim insulator, is the important component part of power industry.Ceramic material mainly contains conventional ceramic, high silicon porcelain and aluminium matter porcelain, and high silicon porcelain claims again low tension electrical porcelain, is conventionally applied in low pressure electric transmission and distribution circuit.The environment for use of low tension electrical porcelain material is severe, causes its production technique very strict, once in production or use procedure, occur that hair line or impurity content exceed standard, will eliminate and become low tension electrical porcelain waste material.China every year from production line and low pressure electric transmission and distribution circuit superseded low tension electrical porcelain waste material have millions of tons, pile up like a mountain, to environment, resource caused to waste.
The Thermal Equipments such as kiln are the visual plants in industrial production, are also the places that extremely consumes the energy and raw material.The important measures that improve the working efficiency of kiln and reduce heat energy consumption and alleviate own wt are used lightweight refractory to replace heavy refractory materials to construct inner lining of kiln exactly.There is the defect that impurity is high, pore is large, effect of heat insulation is not good enough and use temperature is low in traditional lightweight synthetic material; Senior insulating refractory can be brought up to use temperature 1500 ℃, but price is high and intensity is low, is not suitable for and applies.Therefore, the higher and cheap lightweight unshape refractory of application temperature is very necessary, not only can effectively reduce the safe operation of furnace shell appearance temperature, support equipment and effectively reduce energy consumption, and can reduce use cost.Aglite is the important component part of preparation lightweight unshape refractory, yet generally the aggregate of application exists Performance and Cost Modeling the shortcoming such as can not take into account now, thereby cannot realize the optimization configuration of resource.
" utilize the useless mud of ceramics factory and commercial alumina to prepare the method for high alumina mullite aggregate " (CN101585711A) patented technology, the useless mud of open Liao Yi ceramics factory, the bauxitic clay after deironing and commercial alumina are raw material, wet-milling mixes formation mixing mud; Adopt the granulation of press spray granulating and drying machine to form particulate state powder mixing mud; After burning till and sieving, obtain the mullite aggregate of different grain size and alumina content.The defect of the method is mainly manifested in: (1) technological process is more complicated and energy consumption is high; (2) utilization rate of solid waste is low; (3) granularity of aggregate finished product and one-tenth are grouped into uncontrollable.
Summary of the invention
The present invention is intended to overcome prior art defect, object be to provide a kind of technique simple, economize on resources and the eco-friendly low tension electrical porcelain waste material that utilizes is prepared the method that aluminium silicon is aglite; With the prepared aluminium silicon of this method, be that volume stability and the compressive strength of aglite is higher, volume density is lower.
For achieving the above object, the technical solution adopted in the present invention is: low tension electrical porcelain waste material, the flyash of 10.0 ~ 50.0wt% and the clay of 10.0 ~ 30.0wt% of 40.0 ~ 80.0wt% of take is raw material, first in raw material per ton, add the pore-forming material of 400 ~ 900L, mix, the bonding agent of additional described raw material 3.5 ~ 7.0wt% and the water of 11.0 ~ 17.0wt% again, granulating and forming; Then dry 22 ~ 34h under 80 ~ 140 ℃ of conditions is incubated 2 ~ 12h under 1000 ~ 1300 ℃ of conditions, and the aluminium silicon obtaining based on low tension electrical porcelain waste material is aglite.
The particle diameter of described low tension electrical porcelain waste material is less than 0.074mm; The main chemical compositions of low tension electrical porcelain waste material is: Al
2o
3content>=24.0wt%, SiO
2content>=70.0wt%, K
2o content≤3.0wt%, Na
2o content≤0.6wt%.
The particle diameter of described flyash is less than 0.088mm, and the main chemical compositions of flyash is: Al
2o
3content>=30.0wt%, SiO
2content>=54.0wt%, K
2o content≤0.8wt%, Na
2o content≤0.05wt%.
The particle diameter of described clay is less than 0.088mm, and the main chemical compositions of clay is: Al
2o
3content>=40.0wt%, SiO
2content>=55.0wt%, K
2o content≤0.8wt%, Na
2o content≤0.1wt%.
Described pore-forming material is a kind of in chaff, sawdust and pelletted pitch.
Described bonding agent is one or both in sodium lignosulfonate, Xylo-Mucine, dextrin and starch.
Owing to adopting technique scheme, the present invention is raw materials used is current bulk deposition and the low tension electrical porcelain waste material of not being fully used, not only slowed down environmental stress and also saved the expense of processing a large amount of low tension electrical porcelain waste materials, therefore turn waste into wealth, economize on resources and environmental friendliness; The present invention is by raw material granulating and forming, and after being dried, burning till the aluminium silicon that can obtain based on low tension electrical porcelain waste material is aglite, and production technique is simple; The pore size distribution that the prepared aluminium silicon of the present invention is aglite is mainly distributed in below 15 μ m, concentrates and is distributed between 5 ~ 8 μ m, and volume density is 0.77 ~ 1.43g/cm
3, apparent porosity is 36.9 ~ 59.8%, reheating linear change rate on reheating ± 0.5%, and cold crushing strength is 8.0 ~ 20.0MPa.
Therefore, the present invention have technique simple, economize on resources and eco-friendly feature, volume stability and compressive strength that prepared aluminium silicon is aglite are higher, volume density is lower.
Embodiment
Below in conjunction with embodiment, the present invention will be further described, not limiting the scope of the invention.
For avoiding repetition, first the involved raw material unification of this embodiment is described below:
The particle diameter of described low tension electrical porcelain waste material is less than 0.074mm; The main chemical compositions of low tension electrical porcelain waste material is: Al
2o
3content>=24.0wt%, SiO
2content>=70.0wt%, K
2o content≤3.0wt%, Na
2o content≤0.6wt%.
The particle diameter of described flyash is less than 0.088mm, and the main chemical compositions of flyash is: Al
2o
3content>=30.0wt%, SiO
2content>=54.0wt%, K
2o content≤0.8wt%, Na
2o content≤0.05wt%.
The particle diameter of described clay is less than 0.088mm, and the main chemical compositions of clay is: Al
2o
3content>=40.0wt%, SiO
2content>=55.0wt%, K
2o content≤0.8wt%, Na
2o content≤0.1wt%.
In embodiment, repeat no more.
embodiment 1
A kind of aluminium silicon based on low tension electrical porcelain waste material is aglite and preparation method thereof.Low tension electrical porcelain waste material, the flyash of 40.0 ~ 50.0wt% and the clay of 10.0 ~ 15.0wt% of 40.0 ~ 50.0wt% of take is raw material, first in raw material per ton, add the chaff of 800 ~ 900L, mix, the sodium lignosulfonate of additional described raw material 3.5 ~ 4.5wt% and the water of 11.0 ~ 13.0wt% again, granulating and forming; Then dry 22 ~ 25h under 80 ~ 100 ℃ of conditions is incubated 2 ~ 4h under 1000 ~ 1100 ℃ of conditions, and the aluminium silicon obtaining based on low tension electrical porcelain waste material is aglite.
The prepared aluminium silicon of the present embodiment be aglite after testing: volume density is 0.77 ~ 0.94g/cm
3; Apparent porosity is 56.3 ~ 59.8%; Cold crushing strength 8.0 ~ 10.5MPa.
embodiment 2
A kind of aluminium silicon based on low tension electrical porcelain waste material is aglite and preparation method thereof.Low tension electrical porcelain waste material, the flyash of 30.0 ~ 40.0wt% and the clay of 15.0 ~ 20.0wt% of 50.0 ~ 60.0wt% of take is raw material, first in raw material per ton, add the sawdust of 600 ~ 700L, mix, the sodium cellulose glycolate of additional described raw material 4.5 ~ 5.5wt% and the water of 13.0 ~ 15.0wt% again, granulating and forming; Then dry 29 ~ 32h under 90 ~ 110 ℃ of conditions is incubated 4 ~ 6h under 1100 ~ 1200 ℃ of conditions, and the aluminium silicon obtaining based on low tension electrical porcelain waste material is aglite.
The prepared aluminium silicon of the present embodiment be aglite after testing: volume density is 0.90 ~ 1.12g/cm
3; Apparent porosity is 50.6 ~ 54.2%; Cold crushing strength 12.5 ~ 15.0MPa.
embodiment 3
A kind of aluminium silicon based on low tension electrical porcelain waste material is aglite and preparation method thereof.Low tension electrical porcelain waste material, the flyash of 10.0 ~ 20.0wt% and the clay of 20.0 ~ 25.0wt% of 60.0 ~ 70.0wt% of take is raw material, first in raw material per ton, add the pelletted pitch of 400 ~ 500L, mix, the starch of more additional described raw material 5.5 ~ 6.5wt% and the water of 15.0 ~ 17.0wt%, granulating and forming; Then dry 27 ~ 30h under 100 ~ 120 ℃ of conditions is incubated 6 ~ 8h under 1200 ~ 1300 ℃ of conditions, and the aluminium silicon obtaining based on low tension electrical porcelain waste material is aglite.
The prepared aluminium silicon of the present embodiment be aglite after testing: volume density is 1.19 ~ 1.43g/cm
3; Apparent porosity is 36.9 ~ 42.1%; Cold crushing strength 17.4 ~ 20.0MPa.
embodiment 4
A kind of aluminium silicon based on low tension electrical porcelain waste material is aglite and preparation method thereof.Low tension electrical porcelain waste material, the flyash of 10.0 ~ 20.0wt% and the clay of 10.0 ~ 15.0wt% of 70.0 ~ 80.0wt% of take is raw material, first in raw material per ton, add the sawdust of 500 ~ 600L, mix, the dextrin of more additional described raw material 6.0 ~ 7.0wt% and the water of 12.5 ~ 14.5wt%, granulating and forming; Then dry 25 ~ 28h under 110 ~ 130 ℃ of conditions is incubated 8 ~ 10h under 1150 ~ 1250 ℃ of conditions, and the aluminium silicon obtaining based on low tension electrical porcelain waste material is aglite.
The prepared aluminium silicon of the present embodiment be aglite after testing: volume density is 1.10 ~ 1.34g/cm
3; Apparent porosity is 46.3 ~ 51.7%; Cold crushing strength 13.9 ~ 16.8MPa.
embodiment 5
A kind of aluminium silicon based on low tension electrical porcelain waste material is aglite and preparation method thereof.Low tension electrical porcelain waste material, the flyash of 20.0 ~ 30.0wt% and the clay of 25.0 ~ 30.0wt% of 45.0 ~ 55.0wt% of take is raw material, first in raw material per ton, add the chaff of 700 ~ 800L, mix, the sodium lignosulfonate of additional described raw material 1.5 ~ 2.0wt% is, the water of the dextrin of 2.0 ~ 2.5wt% and 14.5 ~ 16.5wt% again, granulating and forming; Then dry 26 ~ 29h under 120 ~ 140 ℃ of conditions is incubated 10 ~ 12h under 1050 ~ 1150 ℃ of conditions, and the aluminium silicon obtaining based on low tension electrical porcelain waste material is aglite.
The prepared aluminium silicon of the present embodiment be aglite after testing: volume density is 0.82 ~ 1.03g/cm
3; Apparent porosity is 51.0 ~ 55.4%; Cold crushing strength 12.0 ~ 14.7MPa.
embodiment 6
A kind of aluminium silicon based on low tension electrical porcelain waste material is aglite and preparation method thereof.Low tension electrical porcelain waste material, the flyash of 30.0 ~ 40.0wt% and the clay of 10.0 ~ 15.0wt% of 55.0 ~ 65.0wt% of take is raw material, first in raw material per ton, add the pelletted pitch of 650 ~ 750L, mix, the sodium cellulose glycolate of additional described raw material 2.5 ~ 3.0wt% is, the water of the starch of 3.0 ~ 3.5wt% and 11.5 ~ 13.5wt% again, granulating and forming; Then dry 28 ~ 31h under 100 ~ 120 ℃ of conditions is incubated 3 ~ 5h under 1120 ~ 1220 ℃ of conditions, and the aluminium silicon obtaining based on low tension electrical porcelain waste material is aglite.
The prepared aluminium silicon of the present embodiment be aglite after testing: volume density is 0.97 ~ 1.25g/cm
3; Apparent porosity is 50.2 ~ 54.9%; Cold crushing strength 13.3 ~ 16.4MPa.
embodiment 7
A kind of aluminium silicon based on low tension electrical porcelain waste material is aglite and preparation method thereof.Low tension electrical porcelain waste material, the flyash of 25.0 ~ 35.0wt% and the clay of 25.0 ~ 30.0wt% of 45.0 ~ 55.0wt% of take is raw material, first in raw material per ton, add the pelletted pitch of 450 ~ 550L, mix, the sodium lignosulfonate of additional described raw material 1.0 ~ 1.5wt% is, the water of the dextrin of 2.5 ~ 3.0wt% and 13.5 ~ 15.5wt% again, granulating and forming; Then dry 23 ~ 26h under 80 ~ 100 ℃ of conditions is incubated 7 ~ 9h under 1180 ~ 1280 ℃ of conditions, and the aluminium silicon obtaining based on low tension electrical porcelain waste material is aglite.
The prepared aluminium silicon of the present embodiment be aglite after testing: volume density is 1.22 ~ 1.41g/cm
3; Apparent porosity is 41.8 ~ 47.5%; Cold crushing strength 15.6 ~ 18.2MPa.
embodiment 8
A kind of aluminium silicon based on low tension electrical porcelain waste material is aglite and preparation method thereof.Low tension electrical porcelain waste material, the flyash of 15.0 ~ 25.0wt% and the clay of 15.0 ~ 20.0wt% of 65.0 ~ 75.0wt% of take is raw material, first in raw material per ton, add the chaff of 750 ~ 850L, mix, the dextrin of additional described raw material 2.0 ~ 2.5wt% is, the water of the starch of 3.0 ~ 3.5wt% and 14.0 ~ 16.0wt% again, granulating and forming; Then dry 31 ~ 34h under 110 ~ 130 ℃ of conditions is incubated 5 ~ 7h under 1050 ~ 1150 ℃ of conditions, and the aluminium silicon obtaining based on low tension electrical porcelain waste material is aglite.
The prepared aluminium silicon of the present embodiment be aglite after testing: volume density is 0.85 ~ 1.06g/cm
3; Apparent porosity is 54.5 ~ 58.3%; Cold crushing strength 10.2 ~ 15.1MPa.
This embodiment is raw materials used for current bulk deposition and the low tension electrical porcelain waste material of not being fully used, and has not only slowed down environmental stress also to have saved the expense of processing a large amount of low tension electrical porcelain waste materials, therefore turn waste into wealth, economize on resources and environmental friendliness; The present invention is by raw material granulating and forming, and after being dried, burning till the aluminium silicon that can obtain based on low tension electrical porcelain waste material is aglite, and production technique is simple; The pore size distribution that the prepared aluminium silicon of the present invention is aglite is mainly distributed in below 15 μ m, concentrates and is distributed between 5 ~ 8 μ m, and volume density is 0.77 ~ 1.43g/cm
3, apparent porosity is 36.9 ~ 59.8%, reheating linear change rate on reheating ± 0.5%, and cold crushing strength is 8.0 ~ 20.0MPa.
Therefore, the present invention have technique simple, economize on resources and eco-friendly feature, volume stability and compressive strength that prepared aluminium silicon is aglite are higher, volume density is lower.
Claims (7)
1. the aluminium silicon based on low tension electrical porcelain waste material is the preparation method of aglite, it is characterized in that, low tension electrical porcelain waste material, the flyash of 10.0 ~ 50.0wt% and the clay of 10.0 ~ 30.0wt% of 40.0 ~ 80.0wt% of take is raw material, first in raw material per ton, add the pore-forming material of 400 ~ 900L, mix, the bonding agent of additional described raw material 3.5 ~ 7.0wt% and the water of 11.0 ~ 17.0wt% again, granulating and forming; Then dry 22 ~ 34h under 80 ~ 140 ℃ of conditions is incubated 2 ~ 12h under 1000 ~ 1300 ℃ of conditions, and the aluminium silicon obtaining based on low tension electrical porcelain waste material is aglite.
2. the aluminium silicon based on low tension electrical porcelain waste material according to claim 1 is the preparation method of aglite, it is characterized in that the particle diameter of described low tension electrical porcelain waste material is less than 0.074mm; The main chemical compositions of low tension electrical porcelain waste material is: Al
2o
3content>=24.0wt%, SiO
2content>=70.0wt%, K
2o content≤3.0wt%, Na
2o content≤0.6wt%.
3. the aluminium silicon based on low tension electrical porcelain waste material according to claim 1 is the preparation method of aglite, it is characterized in that the particle diameter of described flyash is less than 0.088mm, and the main chemical compositions of flyash is: Al
2o
3content>=30.0wt%, SiO
2content>=54.0wt%, K
2o content≤0.8wt%, Na
2o content≤0.05wt%.
4. the aluminium silicon based on low tension electrical porcelain waste material according to claim 1 is the preparation method of aglite, it is characterized in that the particle diameter of described clay is less than 0.088mm, and the main chemical compositions of clay is: Al
2o
3content>=40.0wt%, SiO
2content>=55.0wt%, K
2o content≤0.8wt%, Na
2o content≤0.1wt%.
5. the aluminium silicon based on low tension electrical porcelain waste material according to claim 1 is the preparation method of aglite, it is characterized in that described pore-forming material is a kind of in chaff, sawdust and pelletted pitch.
6. the aluminium silicon based on low tension electrical porcelain waste material according to claim 1 is the preparation method of aglite, it is characterized in that described bonding agent is one or both in sodium lignosulfonate, Xylo-Mucine, dextrin and starch.
7. the aluminium silicon based on low tension electrical porcelain waste material is an aglite, it is characterized in that described aluminium silicon is that aglite is according to the aluminium silicon based on low tension electrical porcelain waste material described in any one in claim 1 ~ 7, to be aglite the prepared aluminium silicon of preparation method is aglite.
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| CN105033173A (en) * | 2015-09-23 | 2015-11-11 | 张燕 | Vanadium iron slag-corundum slag coating for lost foam casting and manufacturing method thereof |
| CN111187087A (en) * | 2020-01-16 | 2020-05-22 | 郑州大学 | Preparation method of lightweight castable aggregate |
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| CN105033173A (en) * | 2015-09-23 | 2015-11-11 | 张燕 | Vanadium iron slag-corundum slag coating for lost foam casting and manufacturing method thereof |
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| CN111187087B (en) * | 2020-01-16 | 2022-02-08 | 郑州大学 | Preparation method of lightweight castable aggregate |
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