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Architectural pottery prepared by secondary waste flyash or bottom ash and method thereof

A technology for architectural ceramics and waste fly ash, which is applied in the field of preparation of architectural ceramics and its preparation, can solve the problems of high cost, low amount of secondary waste, high brittleness of ceramics, etc., achieve the level of heavy metal oscillation toxicity, and the leaching amount is small, saving natural resources and Effects of energy, prevention of volatilization and migration

Inactive Publication Date: 2009-11-18
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the amount of secondary waste used in this scheme is low, the amount of quartz is more, and the firing temperature of ceramics is higher, so the obtained ceramics are brittle and costly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] a. Design the total amount of raw materials according to the size and quantity of the prepared ceramics, put 55% of fly ash, 45% of kaolin and 10% of quartz into the ball mill according to the weight percentage of each pretreated raw material, and ball mill to the particle size Less than 200 mesh;

[0024] b. Put the ball-milled mixture into the green body mold for dry pressing molding, and the molding pressure is 30MPa;

[0025] c. After drying the shaped green body, put it into the kiln. The heating rate of the low temperature and medium temperature sections is the same as that of traditional architectural ceramics, and the high temperature firing temperature is controlled at 1100°C;

[0026] d. After being kept at a high-temperature roasting temperature for 90 minutes, enter the cooling zone;

[0027] e. Glaze or polish the cooled porcelain body to form porcelain.

Embodiment 2

[0029] a. Put 70% of the fly ash, 25% of kaolin and 5% of quartz into the ball mill according to the percentage by weight of each raw material after pretreatment, and ball mill until the particle size is less than 200 mesh;

[0030] b. Add 3% water to the ball-milled mixture and mix it evenly, put it into the ceramic green body mold and dry press to form it, and the forming pressure is 35MPa;

[0031] c. Dry the shaped body and put it into the kiln. The heating rate of the low-temperature and medium-temperature sections is the same as that of traditional building ceramics, and the high-temperature firing temperature is controlled at 1080°C;

[0032] d. After being kept at a high-temperature roasting temperature for 75 minutes, enter the cooling zone;

[0033] e. Glaze or polish the cooled porcelain body to form porcelain.

Embodiment 3

[0035] a. Put 75% bottom ash, 21% kaolin and 4% quartz into the ball mill according to the percentage by weight of each raw material after pretreatment, and ball mill until the particle size is less than 200 mesh;

[0036] b. Add 4% water to the ball-milled mixture and mix it evenly, put it into the green body mold and dry press to form it, and the forming pressure is 40MPa;

[0037] c. After drying the shaped green body, put it into the kiln. The heating rate of the low-temperature and medium-temperature sections is the same as that of traditional architectural ceramics, and the high-temperature firing temperature is controlled at 1060°C;

[0038] d. After being kept at the roasting temperature for 65 minutes, enter the cooling zone;

[0039] e. Glaze or polish the cooled porcelain body to form porcelain.

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Abstract

The invention relates to an architectural pottery prepared by secondary water flyash or bottom ash and a method thereof. The method comprises the following steps; mixing flyash or bottom ash with kaoline and quartz according to weight percentage and ball milling the mixture; placing the mixture into a green body for tooling; placing the formed green body into a kiln, baking and preserving heat for some time; cooling, glazing or polishing the green body and obtaining the ceramics. In the invention, secondary water is used as the main raw material to prepare low temperature and fast firing pottery, thus saving natural resource and energy, lowering ceramics cost and obtaining fine quality architectural pottery. Compared with the method of heavy metal melting and solidification, due to the lower reaction temperature, the processing method of secondary waste can prevent parts of heavy metal from volatilization and migration in the process of melting at high temperature. Compared with the method of solidification by using phosphate, cement, concrete and the like, the secondary water is subjected to sintering at high temperature so that the solidification effect is good, and the toxic organism is completely decomposed in the process of sintering. The invention processes secondary waste effectively while improving added value of the secondary waste.

Description

technical field [0001] The invention relates to the reuse of fly ash or bottom ash produced by incineration of garbage, in particular to the preparation of building ceramics with fly ash or bottom ash as the main material and a preparation method thereof. Background technique [0002] Waste incineration power generation is one of the most effective ways to deal with municipal solid waste at present. With the increasing scale of waste incineration power generation in my country, more and more secondary waste is produced. Due to the non-classification of domestic waste in my country, the proportion of bottom ash in secondary waste after waste incineration for power generation is large, and the content of heavy metals in fly ash is high. If it is not treated in time, it will cause new pollution to the environment. At present, some European countries, the United States and Japan have solidified the fly ash after incineration and used it as a mixture of cement, concrete, etc. or ...

Claims

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Application Information

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IPC IPC(8): C04B35/00C04B35/622
Inventor 张培萍李宪州蒋引珊魏存弟赵以辛
Owner JILIN UNIV
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