Process for preparing high-performance ceramic plate film supporting body

A preparation process and flat membrane technology, applied in the fields of inorganic non-metallic materials and porous ceramic materials, can solve the problems of low bending strength, low permeability and high preparation cost, and solve the problems of high brittleness, excellent permeability and low preparation cost. Effect

Inactive Publication Date: 2019-06-07
江苏埃梯恩膜过滤技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a preparation process of a high-performance ceramic flat membrane support body, which has the advantages of high strength, high permeability, and low preparation cost, and solves the problem of ceramic flat membrane support bodies currently on the market. There are problems of low bending strength, low permeability and high preparation cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The proportioning composition of the support body of the present invention is, by weight percentage: 3% of ordinary mica powder with an average particle diameter of 2um, 10% of alumina powder with an average particle diameter of 3um, 65% of alumina powder with an average particle diameter of 40um, fiber Chopped polycrystalline mullite fiber with a diameter of 1-3um and an average aspect ratio of 30 5%, methylcellulose 7%, polyethylene glycol 2%, glycerin 3%, water (deionized water) 10% .

[0029] Preparation:

[0030] S1, with the aluminum oxide powder, mica powder, chopped polycrystalline mullite fiber, methyl cellulose weighed in proportion, the aluminum oxide powder of two particle sizes and the chopped polycrystalline mullite fiber are mixed Stir and mix evenly in the feeder, then add the weighed mica powder and methyl cellulose to the evenly mixed alumina powder and continue to mix evenly.

[0031] S2. After mixing polyethylene glycol, glycerin and deionized wate...

Embodiment 2

[0037] The proportioning composition of the support body of the present invention is, by weight percentage: 5% of ordinary mica powder with an average particle diameter of 2um, 15% of alumina powder with an average particle diameter of 7um, 60% of alumina powder with an average particle diameter of 25um, fiber 8% of silicon carbide fiber with a diameter of 2-4um and an average aspect ratio of 20, 5% of methyl cellulose, 1.5% of polyethylene glycol, 1.5% of glycerin, and 12% of water (deionized water).

[0038] Preparation:

[0039] S1. Alumina powder, mica powder, silicon carbide fiber, and methyl cellulose weighed in proportion, firstly mix the alumina powder and silicon carbide fiber of two particle sizes in a mixer evenly, and then Add the weighed mica powder and methyl cellulose to the evenly mixed alumina powder and continue to mix evenly.

[0040] S2. After mixing polyethylene glycol, glycerin and deionized water evenly, add them to the powder in step S1, and mix evenly...

Embodiment 3

[0046] The proportioning composition of the support body of the present invention is, by weight percentage: 3% of special mica powder with an average particle diameter of 4um, 10% of alumina powder with an average particle diameter of 3um, 65% of alumina powder with an average particle diameter of 40um, fiber 3% of alumina fibers with a diameter of 4-6um and an average aspect ratio of 15, 7% of methyl cellulose, 2% of polyethylene glycol, 3% of glycerin, and 10% of water (deionized water).

[0047] Preparation:

[0048] S1. Alumina powder, mica powder, alumina fiber and methyl cellulose weighed in proportion, firstly mix the alumina powder and alumina fiber with two particle sizes in the mixer evenly, and then Add the weighed mica powder and methyl cellulose to the evenly mixed alumina powder and continue to mix evenly.

[0049] S2. After mixing polyethylene glycol, glycerin and deionized water evenly, add them to the powder in step S1, and mix evenly at high speed.

[0050]...

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Abstract

The invention relates to the field of porous ceramic materials in the field of non-metallic inorganic materials and particularly relates to a process for preparing a high-performance ceramic plate film supporting body. The high-performance ceramic plate film supporting body comprises the following raw material ingredients in percentage by weight: 60% to 80% of powdered alumina, 2% to 10% of mica powder, 2% to 10% of binder, 2% to 10% of lubricant, 2% to 10% of plasticizer, 3% to 10% of chopped fibers and 10% to 30% of water, wherein the powdered alumina contains powder of two kinds of particlesizes, i.e., D50: 3 to 10 microns and D50: 20 to 40 microns, and the mica powder is selected from ordinary mica powder and special mica powder and has the particle size of 2 to 5 microns. According to the process, a proper volume of mica powder of small particle size is added into a mixture for preparing the ceramic plate film supporting body, so that a sintering temperature can be lowered, the energy consumption is lowered, and the mechanical strength of the plate film supporting body can be effectively improved; and on the other hand, two kinds of powdered alumina, which is matched in particle size, are selected, so that the increase of degree of uniformity of pores of a ceramic plate film is facilitated, and the ceramic plate film supporting body with high porosity and excellent permeability is prepared.

Description

technical field [0001] The invention relates to the technical field of porous ceramic materials in the field of inorganic non-metallic materials, in particular to a preparation process of a high-performance ceramic flat membrane support body. Background technique [0002] Due to its good water treatment performance, membrane bioreactors have received more and more attention and applications, especially in the fields of urban domestic sewage and industrial wastewater. As a membrane configuration of MBR membrane modules, flat membrane has become one of the main membrane configurations for MBR membranes because of its good anti-pollution performance and high mechanical strength. The ceramic flat membrane has the advantages of both ceramic materials and flat membrane configuration, and has the advantages of resistance to harsh systems, good hydrophilicity, low energy consumption, easy cleaning and long service life. Based on the "sieving" theory, the ceramic flat membrane uses ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B38/00C04B35/80
Inventor 陆天怡李雪张新华
Owner 江苏埃梯恩膜过滤技术有限公司
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