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Preparation method for synthesizing cordierite material by use of waste ceramic rollers

A technology of cordierite and waste ceramics, which is applied in the field of preparation of cordierite materials using waste ceramic rollers, can solve the problems of low cordierite content and high raw material costs, reduce sintering temperature, improve purity, and realize high value-added circulation The effect of using

Inactive Publication Date: 2014-03-12
FUJIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of high raw material cost and low cordierite content in the synthetic cordierite material technology existing in the prior art, and to overcome the deficiencies in the prior art above, the present invention provides a method for preparing high-purity cordierite by using waste ceramic rollers. The preparation method of the material, which can maximize the use of roller bar waste on the premise of ensuring high-purity cordierite, realize the high value-added recycling of industrial solid waste, and significantly reduce the production cost of cordierite materials, Expand the field of application

Method used

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  • Preparation method for synthesizing cordierite material by use of waste ceramic rollers
  • Preparation method for synthesizing cordierite material by use of waste ceramic rollers
  • Preparation method for synthesizing cordierite material by use of waste ceramic rollers

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Embodiment 1

[0019] figure 1 For the process step roadmap of the present invention, refer to the appended figure 1 , The weight ratio of the raw material formula of this example is: waste ceramic roller 40, kaolin 30, talc 24, quartz 6. After the raw materials are mixed according to the ratio, they are ground in a planetary ball mill for 4 hours, material: ball: water = 1:1.5:0.8. The ground slurry is filtered and dehydrated, put into a drying oven at 100°C for 12 hours, crushed and passed through a 100-mesh sieve. The powder is mixed with a binder of 5% polyvinyl alcohol aqueous solution, molded under a pressure of 20MPa, and the molded blank is placed in a drying oven at 100°C for 12 hours. The dry billet is placed in a kiln and fired at high temperature in an air atmosphere. The calcination temperature is 1320°C, the holding time is 4 hours, and it is naturally cooled to room temperature. It is made of cordierite. The crystal phase structure of the sample was analyzed by X-ray diffra...

Embodiment 2

[0021] The weight ratio of the raw material formula of this example is: waste ceramic roller 46, kaolin 24, talc 24, quartz 6. After the raw materials are mixed according to the ratio, they are ground in a planetary ball mill for 4 hours, material: ball: water = 1:1.5:0.8. The ground slurry is filtered and dehydrated, put into a drying oven at 100°C for 12 hours, crushed and passed through a 100-mesh sieve. The powder is mixed with a binder of 5% dextrin powder aqueous solution, and molded under a pressure of 20MPa, and the molded blank is placed in a drying oven at 100°C for 12 hours. The dry billet is placed in a kiln and fired at high temperature in an air atmosphere. The calcination temperature is 1380°C, the holding time is 2 hours, and it is naturally cooled to room temperature. It is made of cordierite. After testing, the content of cordierite in this material is 92%, the bending strength is 78MPa, and the bulk density is 2.04g / cm 3 .

Embodiment 3

[0023] The weight ratio of the raw material formula of this example is: waste ceramic roller 50, kaolin 20, talc 24, quartz 6. After the raw materials are mixed according to the ratio, they are ground in a planetary ball mill for 4 hours, material: ball: water = 1:1.5:0.8. The ground slurry is filtered and dehydrated, put into a drying oven at 100°C for 12 hours, crushed and passed through a 100-mesh sieve. The powder is mixed with a binder of carboxymethyl cellulose with a concentration of 5%, and molded under a pressure of 20MPa, and the molded blank is placed in a drying oven at 100°C for 12 hours. The dry billet is placed in a kiln and fired at high temperature in an air atmosphere. The calcination temperature is 1350°C, the holding time is 2 hours, and it is naturally cooled to room temperature. It is made of cordierite. After testing, the content of cordierite in this material is 92%, the bending strength is 58MPa, and the bulk density is 1.98g / cm 3 .

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Abstract

The invention discloses a preparation method for synthesizing a cordierite material by use of waste ceramic rollers, which comprises the following steps: A) mixing the following raw materials in parts by weight: 40-50 parts of waste ceramic rollers, 20-30 parts of kaolin, 21-26 parts of talc, 4-6 parts of quartz and 0-3 parts of titanium dioxide; B) grinding the raw materials, spheres and water at a ratio of 1:1.5:0.8 in a grinder for 4-6 hours; C) filtering and dehydrating the slurry after grinding, drying in a drying oven at 100 DEG C for 12 hours, breaking and sieving with a 100-mesh sieve; D) mixing the powder with a polyvinyl alcohol adhesive, forming under a pressure of 20MPa, and drying the formed blank in the drying oven at 100 DEG C for 12 hours; E) calcining the dry blank in a kiln in the air atmosphere, and preserving heat, wherein the calcining temperature is 1,320-1,380 DEG C, and the heat preserving time is 1-4 hours; naturally cooling to room temperature to obtain the cordierite material. The method disclosed by the invention is used for preparing the cordierite material by use of waste rollers; with ecological environmental protection technology and raw material innovation, the method is of great significance to environmental protection.

Description

technical field [0001] The invention belongs to the field of refractory materials, automobile tail gas purification device materials or catalyst carrier materials. Specifically, the invention relates to a preparation method for synthesizing cordierite materials by using waste ceramic rollers. Background technique [0002] With the rapid development and improvement of my country's construction industry, the demand for architectural ceramics, sanitary ceramics, and daily-use ceramics is increasing day by day. Therefore, roller kilns with fast firing, energy saving, and high degree of automation are widely used in the ceramic industry. With the increase of application range and quantity of roller kiln, the requirements for some components in roller kiln are also increasing. As a key component of the roller kiln, the ceramic roller rod plays the role of supporting and conveying the calcined ceramic products during the high temperature sintering process. Since the ceramic roller...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/195C04B35/622
Inventor 花能斌阮玉忠陈权涌朱剑荣
Owner FUJIAN UNIV OF TECH
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