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Composite ceramic filter core and preparation method thereof

A technology of composite ceramics and filter elements, applied in the field of diatomite-based composite ceramic filter elements and their preparation, can solve the problems of low sintering temperature and low mechanical strength of ceramic filter elements, and achieves high mechanical strength, strong reactivity, and large specific surface area. Effect

Inactive Publication Date: 2013-02-13
珠海启月生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to introduce a multi-walled carbon nanotube reinforcement phase and a chemical reaction sintering mechanism (metal aluminum powder nitriding) to prepare a new type of low-temperature sintered high-strength diatomite-based composite ceramic filter element to solve the problem of existing diatomite and carbon particles. The problem of low mechanical strength of the ceramic filter element caused by the low sintering temperature of the composite ceramic material. At the same time, the removal rate of heavy metal ions of this type of ceramic filter element is improved to ensure its water filtration quality and service life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Jilin Changbai Mountain diatomite after pickling (5mol / L H 2 SO 4soaking, soaking temperature is 80°C, soaking time is 8 hours), with 2% NaCO 3 The flux is blended and calcined at high temperature (850°C) for 2 hours to obtain refined diatomite with an average particle diameter of 17-20 μm and a porosity of about 90%.

[0033] The compound dispersant is a compound active agent, which consists of perfluorocationic surfactant (Fc-134, manufactured by Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences) with a concentration of 0.08-0.15g / L and dodecylsulfonic acid at a concentration of 0.05-0.1g / L Sodium is prepared according to 2:1 compounding. The dispersion solution is distilled water. The dispersion equipment adopts ultrasonic pulverizer. Take 2-4mL of the compound dispersant and add it into 50mL of distilled water, stir well for 10 minutes before use. Take 2g of carbon nanotubes and put them into the prepared 50mL dispersant solution and stir, so...

Embodiment 2

[0036] Jilin Changbai Mountain diatomite after pickling (5mol / L H 2 SO 4 soaking, soaking temperature is 80°C, soaking time is 8 hours), with 2% Na 2 CO 3 The flux is blended and calcined at high temperature (850°C) for 2 hours to obtain refined diatomite with an average particle diameter of 17-20 μm and a porosity of about 90%.

[0037] The compound dispersant is a compound active agent, which consists of perfluorocationic surfactant (Fc-134, manufactured by Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences) with a concentration of 0.08-0.15g / L and dodecylsulfonic acid at a concentration of 0.05-0.1g / L Sodium is prepared according to 2:1 compounding. The dispersion solution is distilled water. The dispersion equipment adopts ultrasonic pulverizer. Take 2-4mL of the compound dispersant and add it into 50mL of distilled water, stir well for 10 minutes before use. Take 0.5g of carbon nanotubes and put them into the prepared 50mL dispersant solution and s...

Embodiment 3

[0040] Jilin Changbai Mountain diatomite after pickling (5mol / L H 2 SO 4 soaking, soaking temperature is 80°C, soaking time is 8 hours), with 2% Na 2 CO 3 The flux is blended and calcined at high temperature (850°C) for 2 hours to obtain refined diatomite with an average particle diameter of 17-20 μm and a porosity of about 90%.

[0041] The compound dispersant is a compound active agent, which consists of perfluorocationic surfactant (Fc-134, manufactured by Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences) with a concentration of 0.08-0.15g / L and dodecylsulfonic acid at a concentration of 0.05-0.1g / L Sodium is prepared according to 2:1 compounding. The dispersion solution is distilled water. The dispersion equipment adopts ultrasonic pulverizer. Take 2-4mL of the compound dispersant and add it into 50mL of distilled water, stir well for 10 minutes before use. Take 2g of carbon nanotubes and put them into the prepared 50mL dispersant solution and sti...

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Abstract

The invention relates to a composite ceramic filter core and a preparation method thereof, in particular to a low-temperature sintering and high-strength diatomaceous earth composite ceramic filter core containing multi-walled carbon nanotubes and a preparation method thereof. The composite ceramic filter core comprises, by mass, 60-80% of refined diatomaceous earth, 12-20 parts of activated carbon, 4.5-9 parts of dispersing agent, 2-6 parts of sintering additives, 1-3 parts of antibacterial agents and 0.5-2 parts of carbon nanotubes. According to the low-temperature sintering and high-strength diatomaceous earth composite ceramic filter core containing the carbon nanotubes, due to the fact that the multi-walled carbon nanotubes are evenly distributed in the composite ceramic filter core, mechanical performance of the ceramic filter core can be improved, and the multi-walled carbon nanotubes are of mesoporous structures simultaneously and can perform effective adsorption on remove heavy metal ions in water. In addition, the sintering temperature is reduced to be below 950 DEG C by adding micron-sized metal aluminum powder, natural nano micropores of the diatomaceous earth are reserved, the mechanical strength of the ceramic filter core is further improved, and the compression strength is above 0.5GPa.

Description

technical field [0001] The invention relates to a composite ceramic filter element and a preparation method thereof, in particular to a diatomite-based composite ceramic filter element containing carbon nanotubes, low-temperature sintering, and high strength and a preparation method thereof. Background technique [0002] With the rapid development of industry and the vigorous development of mining, the water quality of most surface water sources in the country is deteriorating. Drinking water source pollutants are mainly composed of bacteria and viruses (such as Escherichia coli), organic substances (such as petroleum, volatile phenols, benzene compounds) and heavy metal ions (such as mercury, lead and cadmium, etc.). In the process of urban drinking water transportation, long-term corrosion of high-level water tanks or pipelines will also introduce impurities such as sediment and rust, resulting in secondary pollution of domestic drinking water. Installing a filter under t...

Claims

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Application Information

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IPC IPC(8): C04B35/14C04B38/08C04B35/622B01D39/20
Inventor 郭芳威王传岭陈顺权杜如虚
Owner 珠海启月生物科技有限公司
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