A kind of preparation method of high-strength ceramic membrane support

A ceramic membrane support, high-strength technology, used in ceramic products, other household appliances, household appliances, etc., can solve the problems of dust recovery, which is easy to generate secondary dust, increase equipment volume and manufacturing cost, and prevent dust removal equipment from running normally. , to ensure the effect of filtering and dust removal, low equipment maintenance and operating costs, and long service life

Active Publication Date: 2016-06-08
湖南科一环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The bag filter is the most widely used dust removal equipment in dust filtration, but it also has the following problems: First, it is not resistant to high temperature, and cannot be used when the gas temperature exceeds 200 ° C. Even the bag filter made of glass fiber cannot It can only be used below 400°C; second, when the gas humidity is high (humid), the dust adheres to the bag and is difficult to fall off, making the dust removal equipment unable to operate normally; third, dust recovery is easy to generate secondary dust, and the regeneration of the bag is not complete. Reduce dust collection efficiency
However, many problems have been exposed in the application process, mainly because the strength of the current ceramic membrane support body is low, and usually it needs to be made into a round tube type (single hole) or lotus root type (porous) to increase its strength, but Significantly reduces the filtration area per unit volume, making the filtration area per unit volume of the ceramic membrane filter equipment only 20-30% of that of the bag filter, which greatly increases the equipment volume and manufacturing cost

Method used

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  • A kind of preparation method of high-strength ceramic membrane support
  • A kind of preparation method of high-strength ceramic membrane support

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1 : The preparation method of described a kind of high-strength ceramic membrane support body, specifically:

[0029] (1) The ceramic mud of the support body is composed of 35% calcined bauxite, 35% high plastic clay, 15% china clay and 15% feldspar by weight percentage, and the hard raw materials in the formula are calcined bauxite and feldspar Select the powder that has been crushed to an average particle size below 10 microns, mix the hard raw material powder with other raw materials, and ball mill for 5 hours to obtain a slurry;

[0030] (2) After sieving the slurry and removing iron, add rice bran and 20% rice straw crushed to 150 meshes, accounting for 20% of the mass percentage of the ceramic mud, as pore-forming materials, and then add appropriate amount of water to disperse evenly with a high-speed mixer, press Obtain mud cake after filtering and dehydrating;

[0031] (3) The mud cake is roughed and stale for more than 24 hours, and then vacuum-extru...

Embodiment 2

[0034] Example 2 : The preparation method of described a kind of high-strength ceramic membrane support body, specifically:

[0035] (1) The ceramic mud of the support is composed of 40% calcined bauxite, 30% high plastic clay, 18% china clay and 12% feldspar by weight percentage, and the hard raw materials in the formula are calcined bauxite and feldspar Select the powder that has been crushed to an average particle size below 10 microns, mix the hard raw material powder with other raw materials, and ball mill for 4 hours to obtain a slurry;

[0036] (2) After sieving the slurry and removing iron, add rice bran and 15% straw that are crushed to 250 meshes and account for 15% of the mass percentage of ceramic mud as pore-forming materials, and then add appropriate amount of water to disperse evenly with a high-speed mixer, press Obtain mud cake after filtering and dehydrating;

[0037] (3) The mud cake is roughed and stale for more than 24 hours, and then vacuum-extruded in...

Embodiment 3

[0040] Example 3 : The preparation method of described a kind of high-strength ceramic membrane support body, specifically:

[0041] (1) The ceramic mud of the support body is composed of 45% calcined bauxite, 25% high plastic clay, 20% china clay and 10% feldspar by weight percentage, and the hard raw materials in the formula are calcined bauxite and feldspar Select the powder that has been crushed to an average particle size below 10 microns, mix the hard raw material powder with other raw materials, and ball mill for 5 hours to obtain a slurry;

[0042] (2) After sieving the slurry and removing iron, add rice bran and 15% rice straw crushed to 200 meshes, accounting for 15% of the mass percentage of ceramic mud, as pore-making materials, and then add appropriate amount of water to disperse evenly with a high-speed mixer, press Obtain mud cake after filtering and dehydrating;

[0043] (3) The mud cake is roughed and stale for more than 24 hours, and then vacuum-extruded i...

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Abstract

The invention provides a method for preparing a high-strength ceramic membrane support body. The method is to fully mix ceramic mud with calcined bauxite and high plastic clay as main raw materials and plant pore-forming materials, and then vacuum extrude it into The green body of the ceramic membrane support body is quickly fired in a roller kiln after drying. The strength of the ceramic membrane support is provided by a highly densified multiphase ceramic material with corundum particles and in-situ-generated mullite whiskers as reinforcing phases, while the pore size and porosity are determined by a fibrous or sheet-like structure. The plant pore-forming material that is completely burned out at high temperature is regulated, so it has better pore connectivity characteristics, thereby obtaining a ceramic membrane support with high strength and a highly connected pore structure. The ceramic membrane support also has the characteristics of wide source of raw materials, low preparation cost and the like.

Description

technical field [0001] The invention relates to the technical field of ceramic membrane supports, and further refers to a preparation method of high-strength ceramic membrane supports. Background technique [0002] The bag filter is the most widely used dust removal equipment in dust filtration, but it also has the following problems: First, it is not resistant to high temperature, and cannot be used when the gas temperature exceeds 200 ° C. Even the bag filter made of glass fiber cannot It can only be used below 400°C; second, when the gas humidity is high (humid), the dust adheres to the bag and is difficult to fall off, making the dust removal equipment unable to operate normally; third, dust recovery is easy to generate secondary dust, and the regeneration of the bag is not complete. Reduce dust removal efficiency. [0003] Ceramic membranes have been widely used in sewage treatment, high-temperature flue gas treatment and dust collection, and have played an important r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/06C04B35/81
Inventor 肖汉宁林晶高朋召
Owner 湖南科一环保科技股份有限公司
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