CN105152626A - Technology for production of non-sintered ceramic through microwave maintenance of feldspath-quartz tailing - Google Patents
Technology for production of non-sintered ceramic through microwave maintenance of feldspath-quartz tailing Download PDFInfo
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- CN105152626A CN105152626A CN201510655169.5A CN201510655169A CN105152626A CN 105152626 A CN105152626 A CN 105152626A CN 201510655169 A CN201510655169 A CN 201510655169A CN 105152626 A CN105152626 A CN 105152626A
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Abstract
A technology for production of non-sintered ceramic through microwave maintenance of feldspath-quartz tailing comprises the following steps: uniformly mixing 60 to 80 wt% of feldspath-quartz tailing with 20 to 40 wt% of calcined kaolinite; levigating the mixture with a ball mill, so as to obtain a solid material; mixing 32 to 39 wt% of industrial flake caustic soda, 45 to 55 wt% of water glass, and 13 to 16 wt% of water into a liquid material; adding 2.0 to 3.0 times of the solid material into the liquid material; stirring for uniform mixing; carrying out compression molding; allowing the molded product to stand still for 3 to 5 hours; carrying out demolding; conducting microwave maintenance on the demolded product, so as to obtain the non-sintered ceramic material. The technology has the advantages that the design is reasonable; the technological process is simple; the product performance index is favorable; the production cost is low; the raw material source is wide; the implementation and the popularization are convenient; the production process meets the environment-friendly requirement of cleaner production.
Description
Technical field
The present invention relates to the technique of producing baking-free ceramic with feldspar-Quartz Tails microwave curing.
Technical background
This baking-free ceramic is the one pottery prepared based on mineral polymeric material principle.Mineral polymeric material (Geopolymer) is a kind of novel inorganic non-metallic polymeric material, this material is main raw material mainly with natural aluminium silicate mineral or industrial solid wastes, be equipped with calcined kaolin and alkali-activator, the curing temperature compacted unders sclerosis of 20 ~ 120 DEG C, be a class by the bonding chemical bond stupalith of dehydrated form composition.The matrix phase formed mutually by dehydrated form, its chemical constitution is close with zeolite, in three-dimensional net structure in physical aspect, by cementing for undissolved solid particulate be hard block, be the architecture basics of material acquisition excellent mechanical performances and chemical stability.The present invention does not need to add cement, relative to gas concrete and foamed concrete, decreases the application of cement.Meanwhile, the maintenance method of mineral polymeric material is mainly based on air heating maintenance, and its curing cycle is long, and cost is high, not easily practice and extension.
Summary of the invention
The object of the present invention is to provide a kind of method utilizing feldspar-Quartz Tails to produce baking-free ceramic.The method is reasonable in design, and technical process is simple, and without " three wastes " discharge, raw material sources are extensive, with low cost.
Another object of the present invention is to replace traditional air heating maintenance method with microwave curing, and which is short for curing cycle, and energy consumption is low, is convenient to practice and extension.
For achieving the above object, the present invention takes following technical scheme:
This technique utilizing feldspar-Quartz Tails microwave curing to produce baking-free ceramic material, comprises the steps:
(1) Feedstock treating step: using after the calcined kaolin mix grinding of feldspar-Quartz Tails and 20 ~ 40 % by weight of 60 ~ 80 % by weight as solid-phase material; Using the industrial sheet alkali of 32 ~ 39 % by weight, 45 ~ 55 % by weight the water of water glass and 13 ~ 16 % by weight mix as liquid phase material;
(2) batching mixing step: the solid-phase material mixed in step (1) and liquid phase material are placed in agitator stirring after 5 ~ 10 minutes according to 2.0 ~ 3.0 weight ratios, i.e. obtained mixed slurry;
(3) casting step: step (2) gained slurry is directly poured into fixed mould compression molding, forming pressure 3-8MPa, the shaping rear standing demoulding after 3 ~ 5 hours;
(4) microwave curing step: step (3) gained solid sample is transferred in microwave dryer, maintenance 40 ~ 120 minutes under microwave frequency is 2450 ± 50MHz condition, i.e. obtained baking-free ceramic material.
In Feedstock treating step in the present invention, feldspar-Quartz Tails is the mine tailing of metal mine grouan ore dressing, and after removing magnetic mineral and melanocratic mineral, its dominant is potassium felspar sand, albite and quartz mutually.Calcined kaolin is the product that kaolin is calcined 2 ~ 4 hours at 850 DEG C, and dominant is amorphous aluminosilicate mutually.
In Feedstock treating step in the present invention, the granularity of feldspar-Quartz Tails and calcined kaolin is below 200 orders, and namely feldspar-Quartz Tails and calcined kaolin particle diameter are below 0.074mm.
In Feedstock treating step in the present invention, the modulus (Na of water glass
2o and SiO
2mol ratio) be 2.2 ~ 2.6, degree Beaume is 35 ~ 40 ° of Be, and its general molecular formula is Na
2onSiO
2, in water white transparency or translucent viscous liquid; Industrial sheet alkali is technical grade sodium hydroxide; The water used is ordinary tap water.
In batching mixing step in the present invention, feldspar-Quartz Tails and calcined kaolin are solid-phase material, are added to the water by industrial sheet alkali after stirring, then add water glass and stir and become liquid phase material, mixed liquid phase material pH >=14.Then mixed solid-phase material is joined in liquid phase material, mix 5 ~ 10 minutes.
In batching mixing step in the present invention, described solid-phase material is 2.0 ~ 3.0 to add in above-mentioned liquid phase material according to solid-liquid weight ratio.
In microwave curing step in the present invention, microwave dryer output rating is 600 ~ 800W, and microwave frequency is 2450 ± 50MHz, and curing time is 40 ~ 120 minutes.
Baking-free ceramic material of the present invention has following major advantage:
1, strength property is high.Adopt the baking-free ceramic material that formula of the present invention is prepared by feldspar-Quartz Tails, ultimate compression strength can reach 70 ~ 80MPa, strength at break is greater than 3KN, the modulus of rupture is greater than 45MPa, far above existing ceramic tile (GB/T4100-2006) standard-required in prepared baking-free ceramic performance.
2, thermal shock resistance is stablized.The baking-free ceramic material prepared by feldspar-Quartz Tails is tested its heat-shock resistance according to ceramic tile heat-shock resistance testing method (GB/T3810.9-2006), not there is peeling phenomenon in test sample surface, there is not crackle, meet the requirement of ceramic thermostability completely.
3, frost resistance is stablized.The baking-free ceramic material prepared by feldspar-Quartz Tails is tested its frost resistance according to ceramic tile frost resistance testing method (GB/T3810.12-2006), test sample surface is complete, do not occur peeling off, the phenomenon such as crackle, meet the requirement of ceramic frost resistance completely.
4, production technique is simple, and energy consumption is low.The baking-free ceramic material prepared by feldspar-Quartz Tails, its technological process of production is: Feedstock treating → batching mixing → casting → microwave curing → material sample.Material microwave maintenance frequency is 2450 ± 50MHz, and curing time is 40 ~ 120 minutes, relative to the maintenance processes of maintaining box, greatly reduces the energy consumption in production process.
5, raw material sources are wide, with low cost, and the useless amount of profit is large.Its batching andesine-Quartz Tails of processing method of the present invention is the mine tailing in industrial mine, and wide material sources, with low cost, its consumption, up to 60 ~ 80 % by weight, can reduce the discharge of Mine Tailings, is convenient to promote the use of in various places.
Present invention process is reasonable in design, technical process is simple, without " three wastes " discharge, meet energy-efficient and " cleaner production " environmental requirement.The pottery adopting method of the present invention to prepare is compared with the technique of existing stupalith, and its main improvements are, instead of traditional clay, thus greatly reduce the consumption to clay with industrial solid castoff feldspar-Quartz Tails; Decrease the application of cement compared with traditional baking-free ceramic, thus the production cost of material is had to a certain degree reduce; Meanwhile, what solve mill tailings stores up the environmental problem caused for a long time.Raw material sources of the present invention are extensive, and technical process is short, and product cost is low, high financial profit, and the payback period is short, is convenient to practice and extension.
Accompanying drawing explanation
Fig. 1 feldspar-Quartz Tails microwave curing produces the process flow sheet of baking-free ceramic.
Embodiment
As shown in Figure 1, feldspar-Quartz Tails and calcined kaolin obtain solid-phase material after mix grinding.After industrial sheet alkali is fully dissolved by certain proportioning in water, carry out mix and blend with water glass, after mixing, obtain liquid phase material.Solid-phase material is joined in liquid phase material, through abundant mix and blend, i.e. obtained a kind of mixed slurry, this slurry is injected mould and carries out compression molding, after compression moulding, the demoulding after certain hour, sample, through microwave curing, namely obtains unburned building ceramics goods.
Embodiment 1
In feldspar-Quartz Tails, dominant phase content consists of potassium felspar sand, the albite of 14.04 % by weight and the quartz of 48.40% of 35.93 % by weight; In calcined kaolin, Contents of Main Components is 49.75 % by weight SiO
2with 43.23 % by weight Al
2o
3; Modulus of water glass is 2.46, and degree Beaume is 40 ° of Be.The ratio of each component is in solid-phase material: calcined kaolin 40 % by weight; Feldspar-Quartz Tails 60 weight part; The ratio of each component is in liquid phase material: industrial sheet alkali 39 % by weight; Water glass 45 % by weight; Water 16 % by weight.Solid-liquid weight ratio is 2.0.
As shown in Figure 1, feldspar-Quartz Tails and calcined kaolin are weighed by above-mentioned weight ratio, is placed in ball mill, also can be levigate by solid-phase material while mixture.Being weighed well by formula by industrial sheet alkali is dissolved completely in quantitative water, obtains sodium hydroxide solution.Sodium hydroxide solution and water glass are fully mixed to get liquid phase material.Solid-phase material is added in liquid phase material fully to mix and obtain mixed slurry in 5 minutes.
Slurry is cast in compression moulding on mould, forming pressure 4MPa, leaves standstill the sample demoulding will be shaped after 3 hours.Be transferred to by sample in low-temperature microwave moisture eliminator, microwave frequency is 2450MHz, curing time 40 minutes.In microwave dryer, slow cooling is to room temperature.Sample is baking-free ceramic material after taking out.This stupalith also will stop 3 days in plant area, ensures constant product quality.Adopt above-mentioned formula and processing condition, the physicochemical property of the baking-free ceramic material of preparation is as follows:
Strength at break: > 3000N, the modulus of rupture: mean value 46.03MPa, monodrome >=45.05MPa (ceramic tile strength property meticulous product technical requirements strength at break >=900, modulus of rupture mean value >=17.5MPa, monodrome >=15MPa, GB/T4100-2006)
Ultimate compression strength: mean value=77.01MPa, monodrome >=74.92MPa (pavior brick strength property CC60 grade specifications ultimate compression strength mean value >=60MPa, monodrome >=50MPa)
Water content: 4.28%
Water-intake rate: 16.97%
Linear shrinkage ratio: 0.1%
Thermal shock resistance measures: sample is tested its heat-shock resistance according to ceramic tile heat-shock resistance testing method (GB/T3810.9-2006).By 10 circulations of sample between 15 DEG C and 145 DEG C, sample surfaces does not all peel off, and does not occur crackle.
Frost resistance measures: sample is tested its frost resistance according to ceramic tile frost resistance testing method (GB/T3810.12-2006), and sample is between-5 DEG C and 5 DEG C after 100 circulations, and sample surfaces is complete, does not occur peeling off, the phenomenon such as crackle.
Embodiment 2
In example 2, in feldspar-Quartz Tails, dominant phase content consists of potassium felspar sand, the albite of 12.43 % by weight and the quartz of 31.56% of 49.32 % by weight, the ratio of each component is: calcined kaolin 25 % by weight in solid-phase material; Feldspar-Quartz Tails 75 weight part; The ratio of each component is in liquid phase material: industrial sheet alkali 35 % by weight; Water glass 50 % by weight; Water 15 % by weight.Solid-liquid weight ratio is 2.6.Except above-mentioned condition, remaining processing parameter is identical with embodiment 1.Adopt above-mentioned formula and processing condition, the physicochemical property of the baking-free ceramic material of preparation is as follows:
Strength at break: > 3300N, the modulus of rupture: mean value 54.25MPa, monodrome >=50.13MPa (meticulous product strength at break >=900 of ceramic tile strength property technical requirements, modulus of rupture mean value >=17.5MPa, monodrome >=15MPa, GB/T4100-2006)
Ultimate compression strength: mean value=82.34MPa, monodrome >=81.25MPa (pavior brick strength property CC60 grade specifications ultimate compression strength mean value >=60MPa, monodrome >=50MPa)
Water content: 3.92%
Water-intake rate: 14.48%
Linear shrinkage ratio: 0.1%
Thermal shock resistance measures: sample is tested its heat-shock resistance according to ceramic tile heat-shock resistance testing method (GB/T3810.9-2006).Sample surfaces does not all peel off, and does not occur crackle.
Frost resistance measures: sample is tested its frost resistance according to ceramic tile frost resistance testing method (GB/T3810.12-2006), and sample is between-5 DEG C and 5 DEG C after 100 circulations, and sample surfaces is complete, does not occur peeling off, the phenomenon such as crackle.
Claims (6)
1. feldspar-Quartz Tails microwave curing produces the technique of baking-free ceramic, it is characterized in that: this processing method comprises the following steps:
(1) Feedstock treating step: after the calcined kaolin of feldspar-Quartz Tails and 20 ~ 40 % by weight of 60 ~ 80 % by weight in proportion Homogeneous phase mixing, ball mill obtains solid-phase material after mix grinding; The water of the industrial sheet alkali of 32 ~ 39 weight, the water glass of 45 ~ 55 weight and 13 ~ 16 weight is uniformly mixed according to said ratio and obtains liquid phase material;
(2) batching mixing step: the mix grinding solid-phase material of step (1) gained and liquid phase material are placed in agitator according to solid-liquid mass ratio 2.0 ~ 3.0 and stir, stir after 5 ~ 10 minutes, i.e. obtained mixed slurry;
(3) compression molding step: after step (2) gained slurry is directly injected fixed mould, compression molding, the rear demoulding;
(4) microwave curing step: by step (3) gained solid transfer in microwave dryer, microwave dryer output rating is 600 ~ 800W, maintenance 40 ~ 120 minutes, i.e. obtained baking-free ceramic material.
2. method according to claim 1 produces baking-free ceramic material, it is characterized in that: described feldspar-Quartz Tails and the granularity of calcined kaolin are below 200 orders, and namely the particle diameter of feldspar-Quartz Tails and calcined kaolin is below 0.074mm.
3. method according to claim 1 produces baking-free ceramic material, it is characterized in that: described feldspar-Quartz Tails is metal mine grouan mine tailing, obtains after removal magnetic mineral and other melanocratic minerals; Its phase content is potassium felspar sand, the albite of 10 ~ 30 % by weight and the quartz of 30 ~ 80% of 10 ~ 50 % by weight; Calcined kaolin is the product that kaolin is calcined 2 ~ 4 hours at 850 DEG C, and its thing is amorphous aluminosilicate mutually.
4. method according to claim 1 produces baking-free ceramic material, it is characterized in that: in Feedstock treating step, and it is uniformly mixed process is after being first added to the water by industrial sheet alkali and stirring, then adds water glass and stir and become liquid phase material.
5. method according to claim 1 produces baking-free ceramic material, it is characterized in that: in compression molding step, forming pressure 3-8MPa, and shaping sample leaves standstill the demoulding after 3 ~ 5 hours again.
6. method according to claim 1 produces baking-free ceramic material, and it is characterized in that: in microwave curing step, micro-wave frequency is 2450 ± 50MHz.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830955A (en) * | 2017-02-20 | 2017-06-13 | 孙光 | A kind of microwave drying prepares the method for not burning modified high-purity magnesium-aluminum spinel composite brick |
| CN113087478A (en) * | 2021-04-08 | 2021-07-09 | 馆陶县陶山黑陶科技有限公司 | Preparation process of high-strength non-fired ceramic |
| CN116375460A (en) * | 2023-01-05 | 2023-07-04 | 韩山师范学院 | High-temperature-resistant ceramic based on aluminosilicate quasi-minerals and preparation method thereof |
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| CN1634795A (en) * | 2003-12-30 | 2005-07-06 | 中国科学院兰州化学物理研究所 | Method for preparing aluminosilicate mineral polymer materials |
| CN101633581A (en) * | 2008-07-22 | 2010-01-27 | 中国矿业大学(北京) | Method for quickly preparing geopolymer material by microwave radiation |
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Patent Citations (2)
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| CN1634795A (en) * | 2003-12-30 | 2005-07-06 | 中国科学院兰州化学物理研究所 | Method for preparing aluminosilicate mineral polymer materials |
| CN101633581A (en) * | 2008-07-22 | 2010-01-27 | 中国矿业大学(北京) | Method for quickly preparing geopolymer material by microwave radiation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830955A (en) * | 2017-02-20 | 2017-06-13 | 孙光 | A kind of microwave drying prepares the method for not burning modified high-purity magnesium-aluminum spinel composite brick |
| CN113087478A (en) * | 2021-04-08 | 2021-07-09 | 馆陶县陶山黑陶科技有限公司 | Preparation process of high-strength non-fired ceramic |
| CN116375460A (en) * | 2023-01-05 | 2023-07-04 | 韩山师范学院 | High-temperature-resistant ceramic based on aluminosilicate quasi-minerals and preparation method thereof |
| CN116375460B (en) * | 2023-01-05 | 2024-02-02 | 韩山师范学院 | High-temperature-resistant ceramic based on aluminosilicate quasi-minerals and preparation method thereof |
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Application publication date: 20151216 |