CN103693944B - Aluminium of based on low tension electrical porcelain waste material silicon system aglite and preparation method thereof - Google Patents

Aluminium of based on low tension electrical porcelain waste material silicon system aglite and preparation method thereof Download PDF

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CN103693944B
CN103693944B CN201310715136.6A CN201310715136A CN103693944B CN 103693944 B CN103693944 B CN 103693944B CN 201310715136 A CN201310715136 A CN 201310715136A CN 103693944 B CN103693944 B CN 103693944B
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aglite
silicon
aluminium
low tension
tension electrical
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CN103693944A (en
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李淑静
徐娜娜
李远兵
袁林
张金龙
汪雷
李亚伟
桑绍柏
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Wuhan University of Science and Engineering WUSE
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    • 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

Present invention relates particularly to a kind of aluminium of based on low tension electrical porcelain waste material silicon system aglite and preparation method thereof.Its technical scheme is: with the clay of low tension electrical porcelain waste material, the flyash of 10.0 ~ 50.0wt% and the 10.0 ~ 30.0wt% of 40.0 ~ 80.0wt% as raw material, in raw material per ton, first add the pore creating material of 400 ~ 900L, mixing, the bonding agent of the most additional described raw material 3.5 ~ 7.0wt% and the water of 11.0 ~ 17.0wt%, granulating and forming;Then under the conditions of 80 ~ 140 DEG C, it is dried 22 ~ 34h, under the conditions of 1000 ~ 1300 DEG C, is incubated 2 ~ 12h, obtain aluminium of based on low tension electrical porcelain waste material silicon system aglite.The present invention has that technique is simple, economizes on resources and eco-friendly feature, and volume stability and the compressive resistance of obtained aluminium silicon system aglite are higher, and bulk density is relatively low.

Description

Aluminium of based on low tension electrical porcelain waste material silicon system aglite and preparation method thereof
Technical field
The invention belongs to aluminium silicon system aglite technical field, be specifically related to a kind of aluminium of based on low tension electrical porcelain waste material silicon system aglite and preparation method thereof.
Background technology
Electrotechnical ceramics (electroceramics) refers mainly to for high-low pressure transmission line of electricity and power station and the insulating ceramics of various electrical appliance, also referred to as insulator, is the important component part of power industry.Ceramic material mainly has conventional ceramic, high silicon porcelain and aluminium matter porcelain, and high silicon porcelain, also known as low tension electrical porcelain, is generally applied in low pressure power transmission and transformation line.The use bad environments of low tension electrical porcelain material, causes its production technology very strict, once during producing or using, occurs that blind crack or impurity content exceed standard, will eliminate and become low tension electrical porcelain waste material.The low tension electrical porcelain waste material that China eliminates every year from production line and low pressure power transmission and transformation line has millions of tons, and pile up like a mountain, and to environment, waste of resources is caused.
The Thermal Equipments such as kiln are the visual plants in industrial production, are also extremely to consume the energy and the place of raw material.Improve the operating efficiency of kiln and reduce thermal energy consumption and alleviate the important measures of own wt and use lightweight refracrory to replace heavy refractory material to construct inner lining of kiln exactly.There is the defect that impurity is high, pore is big, effect of heat insulation is not good enough and use temperature is low in traditional lightweight synthesis material;Senior fireclay insulating refractory can bring up to 1500 DEG C by using temperature, but price is high and intensity is low, is not suitable for popularization and application.Therefore, the higher and cheap lightweight unshape refractory of application temperature is the most necessary, is possible not only to effectively reduce furnace shell external skin temperatures, ensure the safety work of equipment and effectively reduce energy consumption, and can reduce use cost.Aglite is the important component part preparing lightweight unshape refractory, but, the most commonly used aggregate exists performance and cost the shortcoming such as can not take into account, thus cannot realize the optimization collocation of resource.
" utilize ceramics factory to give up mud and the method that high alumina mullite aggregate prepared by commercial alumina " (CN101585711A) patented technology, disclose with ceramics factory give up mud, through except the bauxite after iron and commercial alumina are as raw material, wet-milling mixing forms mixing mud;Mixing mud use press spray granulating and drying machine granulation form graininess powder;Burn till after sieving, obtain the mullite aggregate of different grain size and alumina content.The defect of the method is mainly manifested in: (1) technical process is more complicated and energy consumption high;(2) utilization rate of solid waste is low;(3) granularity and the one-tenth of aggregate finished product is grouped into uncontrollable.
Summary of the invention
It is contemplated that overcome prior art defect, it is therefore an objective to provide that a kind of technique is simple, economize on resources and the eco-friendly method utilizing low tension electrical porcelain waste material to prepare aluminium silicon system aglite;Volume stability and compressive resistance with the aluminium silicon system aglite prepared by this method are higher, and bulk density is relatively low.
For achieving the above object, the technical solution adopted in the present invention is: with the clay of low tension electrical porcelain waste material, the flyash of 10.0 ~ 50.0wt% and the 10.0 ~ 30.0wt% of 40.0 ~ 80.0wt% as raw material, in raw material per ton, first add the pore creating material of 400 ~ 900L, mixing, the bonding agent of the most additional described raw material 3.5 ~ 7.0wt% and the water of 11.0 ~ 17.0wt%, granulating and forming;Then under the conditions of 80 ~ 140 DEG C, it is dried 22 ~ 34h, under the conditions of 1000 ~ 1300 DEG C, is incubated 2 ~ 12h, obtain aluminium of based on low tension electrical porcelain waste material silicon system 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: Al2O3Content >=24.0wt%, SiO2Content >=70.0wt%, K2O content≤3.0wt%, Na2O content≤0.6wt%.
The particle diameter of described flyash is less than 0.088mm, and the main chemical compositions of flyash is: Al2O3Content >=30.0wt%, SiO2Content >=54.0wt%, K2O content≤0.8wt%, Na2O content≤0.05wt%.
The particle diameter of described clay is less than 0.088mm, and the main chemical compositions of clay is: Al2O3Content >=40.0wt%, SiO2Content >=55.0wt%, K2O content≤0.8wt%, Na2O content≤0.1wt%.
Described pore creating material is the one in chaff, sawdust and pelletted pitch.
Described bonding agent is one or both in sodium lignin sulfonate, sodium carboxymethylcellulose, dextrin and starch.
Owing to using technique scheme, the present invention is raw materials used for current bulk deposition and the low tension electrical porcelain waste material be not fully used, not only slow down environmental pressure and also a saving the expense 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, by raw material granulating and forming, burns till i.e. available aluminium of based on low tension electrical porcelain waste material silicon system aglite after drying, and production technology is simple;The pore-size distribution of the aluminium silicon system aglite obtained by the present invention is mainly distributed on below 15 μm, and integrated distribution is between 5 ~ 8 μm, and bulk density is 0.77 ~ 1.43g/cm3, 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 has that technique is simple, economizes on resources and eco-friendly feature, and volume stability and the compressive resistance of obtained aluminium silicon system aglite are higher, and bulk density is relatively low.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention will be further described, not limiting the scope of the invention.
For avoiding repeating, first by as follows for the raw material Unify legislation involved by this detailed description of the invention:
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: Al2O3Content >=24.0wt%, SiO2Content >=70.0wt%, K2O content≤3.0wt%, Na2O content≤0.6wt%.
The particle diameter of described flyash is less than 0.088mm, and the main chemical compositions of flyash is: Al2O3Content >=30.0wt%, SiO2Content >=54.0wt%, K2O content≤0.8wt%, Na2O content≤0.05wt%.
The particle diameter of described clay is less than 0.088mm, and the main chemical compositions of clay is: Al2O3Content >=40.0wt%, SiO2Content >=55.0wt%, K2O content≤0.8wt%, Na2O content≤0.1wt%.
Embodiment repeats no more.
Embodiment 1
A kind of aluminium of based on low tension electrical porcelain waste material silicon system aglite and preparation method thereof.With the clay of low tension electrical porcelain waste material, the flyash of 40.0 ~ 50.0wt% and the 10.0 ~ 15.0wt% of 40.0 ~ 50.0wt% as raw material, in raw material per ton, first add the chaff of 800 ~ 900L, mixing, then the sodium lignin sulfonate of additional described raw material 3.5 ~ 4.5wt% and the water of 11.0 ~ 13.0wt%, granulating and forming;Then under the conditions of 80 ~ 100 DEG C, it is dried 22 ~ 25h, under the conditions of 1000 ~ 1100 DEG C, is incubated 2 ~ 4h, obtain aluminium of based on low tension electrical porcelain waste material silicon system aglite.
Aluminium silicon system aglite prepared by the present embodiment is after testing: bulk density is 0.77 ~ 0.94g/cm3;Apparent porosity is 56.3 ~ 59.8%;Cold crushing strength 8.0 ~ 10.5MPa.
Embodiment 2
A kind of aluminium of based on low tension electrical porcelain waste material silicon system aglite and preparation method thereof.With the clay of low tension electrical porcelain waste material, the flyash of 30.0 ~ 40.0wt% and the 15.0 ~ 20.0wt% of 50.0 ~ 60.0wt% as raw material, in raw material per ton, first add the sawdust of 600 ~ 700L, mixing, the sodium cellulose glycolate of the most additional described raw material 4.5 ~ 5.5wt% and the water of 13.0 ~ 15.0wt%, granulating and forming;Then under the conditions of 90 ~ 110 DEG C, it is dried 29 ~ 32h, under the conditions of 1100 ~ 1200 DEG C, is incubated 4 ~ 6h, obtain aluminium of based on low tension electrical porcelain waste material silicon system aglite.
Aluminium silicon system aglite prepared by the present embodiment is after testing: bulk density is 0.90 ~ 1.12g/cm3;Apparent porosity is 50.6 ~ 54.2%;Cold crushing strength 12.5 ~ 15.0MPa.
Embodiment 3
A kind of aluminium of based on low tension electrical porcelain waste material silicon system aglite and preparation method thereof.With the clay of low tension electrical porcelain waste material, the flyash of 10.0 ~ 20.0wt% and the 20.0 ~ 25.0wt% of 60.0 ~ 70.0wt% as raw material, in raw material per ton, first add the pelletted pitch of 400 ~ 500L, mixing, then the starch of additional described raw material 5.5 ~ 6.5wt% and the water of 15.0 ~ 17.0wt%, granulating and forming;Then under the conditions of 100 ~ 120 DEG C, it is dried 27 ~ 30h, under the conditions of 1200 ~ 1300 DEG C, is incubated 6 ~ 8h, obtain aluminium of based on low tension electrical porcelain waste material silicon system aglite.
Aluminium silicon system aglite prepared by the present embodiment is after testing: bulk density is 1.19 ~ 1.43g/cm3;Apparent porosity is 36.9 ~ 42.1%;Cold crushing strength 17.4 ~ 20.0MPa.
Embodiment 4
A kind of aluminium of based on low tension electrical porcelain waste material silicon system aglite and preparation method thereof.With the clay of low tension electrical porcelain waste material, the flyash of 10.0 ~ 20.0wt% and the 10.0 ~ 15.0wt% of 70.0 ~ 80.0wt% as raw material, in raw material per ton, first add the sawdust of 500 ~ 600L, mixing, then the dextrin of additional described raw material 6.0 ~ 7.0wt% and the water of 12.5 ~ 14.5wt%, granulating and forming;Then under the conditions of 110 ~ 130 DEG C, it is dried 25 ~ 28h, under the conditions of 1150 ~ 1250 DEG C, is incubated 8 ~ 10h, obtain aluminium of based on low tension electrical porcelain waste material silicon system aglite.
Aluminium silicon system aglite prepared by the present embodiment is after testing: bulk density is 1.10 ~ 1.34g/cm3;Apparent porosity is 46.3 ~ 51.7%;Cold crushing strength 13.9 ~ 16.8MPa.
Embodiment 5
A kind of aluminium of based on low tension electrical porcelain waste material silicon system aglite and preparation method thereof.With the clay of low tension electrical porcelain waste material, the flyash of 20.0 ~ 30.0wt% and the 25.0 ~ 30.0wt% of 45.0 ~ 55.0wt% as raw material, in raw material per ton, first add the chaff of 700 ~ 800L, mixing, the most additional described sodium lignin sulfonate of raw material 1.5 ~ 2.0wt%, the dextrin of 2.0 ~ 2.5wt% and the water of 14.5 ~ 16.5wt%, granulating and forming;Then under the conditions of 120 ~ 140 DEG C, it is dried 26 ~ 29h, under the conditions of 1050 ~ 1150 DEG C, is incubated 10 ~ 12h, obtain aluminium of based on low tension electrical porcelain waste material silicon system aglite.
Aluminium silicon system aglite prepared by the present embodiment is after testing: bulk density is 0.82 ~ 1.03g/cm3;Apparent porosity is 51.0 ~ 55.4%;Cold crushing strength 12.0 ~ 14.7MPa.
Embodiment 6
A kind of aluminium of based on low tension electrical porcelain waste material silicon system aglite and preparation method thereof.With the clay of low tension electrical porcelain waste material, the flyash of 30.0 ~ 40.0wt% and the 10.0 ~ 15.0wt% of 55.0 ~ 65.0wt% as raw material, in raw material per ton, first add the pelletted pitch of 650 ~ 750L, mixing, the most additional described sodium cellulose glycolate of raw material 2.5 ~ 3.0wt%, the starch of 3.0 ~ 3.5wt% and the water of 11.5 ~ 13.5wt%, granulating and forming;Then under the conditions of 100 ~ 120 DEG C, it is dried 28 ~ 31h, under the conditions of 1120 ~ 1220 DEG C, is incubated 3 ~ 5h, obtain aluminium of based on low tension electrical porcelain waste material silicon system aglite.
Aluminium silicon system aglite prepared by the present embodiment is after testing: bulk density is 0.97 ~ 1.25g/cm3;Apparent porosity is 50.2 ~ 54.9%;Cold crushing strength 13.3 ~ 16.4MPa.
Embodiment 7
A kind of aluminium of based on low tension electrical porcelain waste material silicon system aglite and preparation method thereof.With the clay of low tension electrical porcelain waste material, the flyash of 25.0 ~ 35.0wt% and the 25.0 ~ 30.0wt% of 45.0 ~ 55.0wt% as raw material, in raw material per ton, first add the pelletted pitch of 450 ~ 550L, mixing, the most additional described sodium lignin sulfonate of raw material 1.0 ~ 1.5wt%, the dextrin of 2.5 ~ 3.0wt% and the water of 13.5 ~ 15.5wt%, granulating and forming;Then under the conditions of 80 ~ 100 DEG C, it is dried 23 ~ 26h, under the conditions of 1180 ~ 1280 DEG C, is incubated 7 ~ 9h, obtain aluminium of based on low tension electrical porcelain waste material silicon system aglite.
Aluminium silicon system aglite prepared by the present embodiment is after testing: bulk density is 1.22 ~ 1.41g/cm3;Apparent porosity is 41.8 ~ 47.5%;Cold crushing strength 15.6 ~ 18.2MPa.
Embodiment 8
A kind of aluminium of based on low tension electrical porcelain waste material silicon system aglite and preparation method thereof.With the clay of low tension electrical porcelain waste material, the flyash of 15.0 ~ 25.0wt% and the 15.0 ~ 20.0wt% of 65.0 ~ 75.0wt% as raw material, in raw material per ton, first add the chaff of 750 ~ 850L, mixing, the most additional described dextrin of raw material 2.0 ~ 2.5wt%, the starch of 3.0 ~ 3.5wt% and the water of 14.0 ~ 16.0wt%, granulating and forming;Then under the conditions of 110 ~ 130 DEG C, it is dried 31 ~ 34h, under the conditions of 1050 ~ 1150 DEG C, is incubated 5 ~ 7h, obtain aluminium of based on low tension electrical porcelain waste material silicon system aglite.
Aluminium silicon system aglite prepared by the present embodiment is after testing: bulk density is 0.85 ~ 1.06g/cm3;Apparent porosity is 54.5 ~ 58.3%;Cold crushing strength 10.2 ~ 15.1MPa.
This detailed description of the invention is raw materials used for current bulk deposition and the low tension electrical porcelain waste material be not fully used, not only slow down environmental pressure and also a saving the expense processing a large amount of low tension electrical porcelain waste materials, therefore turns waste into wealth, economizes on resources and environmental friendliness;The present invention, by raw material granulating and forming, burns till i.e. available aluminium of based on low tension electrical porcelain waste material silicon system aglite after drying, and production technology is simple;The pore-size distribution of the aluminium silicon system aglite obtained by the present invention is mainly distributed on below 15 μm, and integrated distribution is between 5 ~ 8 μm, and bulk density is 0.77 ~ 1.43g/cm3, 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 has that technique is simple, economizes on resources and eco-friendly feature, and volume stability and the compressive resistance of obtained aluminium silicon system aglite are higher, and bulk density is relatively low.

Claims (7)

1. the preparation method of aluminium of based on low tension electrical porcelain waste material a silicon system aglite, it is characterized in that, with the clay of low tension electrical porcelain waste material, the flyash of 10.0 ~ 50.0wt% and the 10.0 ~ 30.0wt% of 40.0 ~ 80.0wt% as raw material, first in raw material per ton, add 400 ~ pore creating material of 900L, mixing, the bonding agent of the most additional described raw material 3.5 ~ 7.0wt% and the water of 11.0 ~ 17.0wt%, granulating and forming;Then under the conditions of 80 ~ 140 DEG C, it is dried 22 ~ 34h, under the conditions of 1000 ~ 1300 DEG C, is incubated 2 ~ 12h, obtain aluminium of based on low tension electrical porcelain waste material silicon system aglite.
The preparation method of aluminium of based on low tension electrical porcelain waste material the most according to claim 1 silicon system aglite, it is characterised 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: Al2O3Content >=24.0wt%, SiO2Content >=70.0wt%, K2O content≤3.0wt%, Na2O content≤0.6wt%.
The preparation method of aluminium of based on low tension electrical porcelain waste material the most according to claim 1 silicon system aglite, it is characterised in that the particle diameter of described flyash is less than 0.088mm, and the main chemical compositions of flyash is: Al2O3Content >=30.0wt%, SiO2Content >=54.0wt%, K2O content≤0.8wt%, Na2O content≤0.05wt%.
The preparation method of aluminium of based on low tension electrical porcelain waste material the most according to claim 1 silicon system aglite, it is characterised in that the particle diameter of described clay is less than 0.088mm, and the main chemical compositions of clay is: Al2O3Content >=40.0wt%, SiO2Content >=55.0wt%, K2O content≤0.8wt%, Na2O content≤0.1wt%.
The preparation method of aluminium of based on low tension electrical porcelain waste material the most according to claim 1 silicon system aglite, it is characterised in that described pore creating material is the one in chaff, sawdust and pelletted pitch.
The preparation method of aluminium of based on low tension electrical porcelain waste material the most according to claim 1 silicon system aglite, it is characterised in that described bonding agent is one or both in sodium lignin sulfonate, sodium carboxymethylcellulose, dextrin and starch.
7. aluminium of based on low tension electrical porcelain waste material a silicon system aglite, it is characterised in that described aluminium silicon system aglite is according to the aluminium silicon system aglite prepared by the preparation method of aluminium of based on low tension electrical porcelain waste material the silicon system aglite according to any one of claim 1 ~ 6.
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CN104942223A (en) * 2015-07-30 2015-09-30 张燕 Lost foam casting paint containing ferrovanadium residue and low tension ceramic waste material as well as preparation method of lost foam casting paint
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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