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Preparation method of flat ceramic membrane support body and ceramic pug thereof

A ceramic mud and support technology, applied in the field of water purification, can solve the problems of low pure water flux and low strength of a flat ceramic membrane, and achieve the effects of high chemical composition purity, reduced sintering temperature, and strong corrosion resistance.

Pending Publication Date: 2020-04-24
SHANGHAI SAFBON WATER SERVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of a high-strength ultra-thin thin-wall flat ceramic membrane support and its ceramic mud, so as to overcome the problems of low strength of flat ceramic membranes and low pure water flux in the prior art.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The ceramic mud of the thin-walled flat ceramic membrane support body is:

[0027] (1) Solid raw materials: 70wt% of alumina powder with an average particle size of 25μm, 10wt% of alumina powder with an average particle size of 3μm, 10wt% of starch, 10wt% of talcum powder, and a total mass of 100kg;

[0028] (2) Liquid raw materials: 22wt% polyethylene glycol with an average molecular weight of 400, 8wt% glycerin, 70wt% pure water, with a total mass of 20kg;

[0029] The weight ratio of solid raw material and liquid raw material is 5:1.

[0030] Preparation of thin-walled flat ceramic membrane support:

[0031] (1) Preparation of ceramic mud: First mix the solid raw material and the liquid raw material separately, then add the liquid raw material into the continuously stirred solid raw material in a spraying manner, and put it into an airtight container after stirring evenly. Stale in the box for 12 hours to obtain mud;

[0032] (2) Preparation of the biscuit: adopt ...

Embodiment 2

[0037] The ceramic mud of the thin-walled flat ceramic membrane support body is:

[0038] (1) Solid raw materials: 65wt% of alumina powder with an average particle size of 30μm, 15wt% of alumina powder with an average particle size of 7μm, 10wt% of methyl cellulose, 10wt% of talcum powder, and a total mass of 120kg;

[0039] (2) Liquid raw materials: 25wt% polyacrylic acid with an average molecular weight of 72, 10wt% glycerin, 65wt% pure water, with a total mass of 20kg;

[0040] The weight ratio of solid raw material and liquid raw material is 6:1.

[0041] Preparation of thin-walled flat ceramic membrane support:

[0042] (1) Preparation of ceramic mud: First mix the solid raw material and the liquid raw material separately, then add the liquid raw material into the continuously stirred solid raw material by spraying, and put it into the Stale for 18 hours in the airtight box to obtain mud;

[0043] (2) Preparation of the biscuit: adopt the two-stage screw extrusion mold...

Embodiment 3

[0048] The ceramic mud of the thin-walled flat ceramic membrane support body is:

[0049] (1) Solid raw materials: 55wt% of alumina powder with an average particle size of 35μm, 15wt% of alumina powder with an average particle size of 5μm, 15wt% of corn flour, 15wt% of mica powder, and a total mass of 140kg;

[0050] (2) Liquid raw materials: 20wt% polyethylene glycol with a molecular weight of 400, 5wt% polyester with a molecular weight of 85, 75wt% pure water, and a total mass of 20kg;

[0051] The weight ratio of solid raw material and liquid raw material is 7:1.

[0052] Preparation of thin-walled flat ceramic membrane support:

[0053] (1) Preparation of ceramic mud: First mix the solid raw material and the liquid raw material separately, then add the liquid raw material into the continuously stirred solid raw material in a spraying manner, and put it into an airtight container after stirring evenly. Stale in the box for 24 hours to obtain mud;

[0054] (2) Preparation...

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Abstract

The invention relates to a ceramic pug of a thin-wall plate ceramic support body. The ceramic pug comprises the following raw materials in percentage by mass: (1) solid raw materials: 60-80% of alumina powder, 10-30% of a sintering aid and 10-30% of a pore-forming agent; (2) the liquid raw materials: 15%-25% of a dispersing agent, 5%-15% of a lubricating agent and 60%-80% of pure water; wherein the weight ratio of the solid raw material to the liquid raw material is (5-7.5): 1; and the ceramic pug can be used for preparing the thin-wall flat plate ceramic support body. By adopting the method disclosed by the invention, the reject ratio of a flat sheet membrane biscuit in extrusion, drying and sintering processes can be reduced to a greater extent, and the qualification rate of the flat ceramic membrane support body is improved; the sintering temperature of the prepared flat membrane support body is greatly reduced, the production energy consumption is reduced, the chemical compositionpurity of the support body is high, and the corrosion resistance is strong.

Description

technical field [0001] The invention belongs to the field of water purification, and in particular relates to a preparation method of a flat ceramic membrane support body and ceramic mud material thereof. Background technique [0002] Membrane bioreactor (MBR) is a high-efficiency sewage treatment equipment that combines membrane separation technology and microbial technology. The core component of the membrane bioreactor is the membrane element. At present, the membrane element is mainly divided into organic membrane and ceramic membrane according to the material. Compared with organic membranes, ceramic membranes have the characteristics of high temperature resistance, acid and alkali corrosion resistance, and solvent resistance, and have been widely used in engineering fields such as chemical engineering, food, and water treatment. [0003] Among the ceramic membranes, compared with the tubular ceramic membrane, the plate ceramic membrane has the characteristics of conve...

Claims

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Application Information

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IPC IPC(8): C04B38/06C04B35/10C04B35/622C04B35/64B28B3/22B28B11/24
CPCC04B38/0645C04B35/10C04B35/622C04B35/64B28B3/22B28B11/243C04B2235/3445C04B2235/3481C04B2235/3418
Inventor 王贤李雪
Owner SHANGHAI SAFBON WATER SERVICE CO LTD
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