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Inorganic film support and making method thereof

A kind of support, inorganic membrane technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., to achieve the effects of good chemical stability, improved quality, and strong regeneration ability

Active Publication Date: 2014-02-12
佛山市金刚材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, existing technologies cannot well meet the above requirements

Method used

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  • Inorganic film support and making method thereof
  • Inorganic film support and making method thereof

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preparation example Construction

[0100] Correspondingly, as figure 1 As shown, the embodiment of the present invention provides a method for preparing an inorganic membrane support, which includes the following steps in sequence:

[0101] S101, uniformly mixing and granulating the main raw materials required for preparing the inorganic membrane support to obtain a granulated material.

[0102] It should be noted that the main raw materials required for the preparation of the inorganic membrane support are subjected to uniform mixing, vacuum refining, and aging to obtain granulated materials.

[0103] Preferably, the granulated material is plastic material.

[0104] Wherein, the main raw material formulation of the inorganic membrane support body in terms of mass percentage is as follows:

[0105] Zirconium corundum 40~90;

[0106] Inorganic additives 3~35;

[0107] Ultrafine inorganic additive powder 1~25;

[0108] The inorganic additive is zircon powder;

[0109] The ultrafine inorganic additive powder...

Embodiment 1

[0146] Selected raw material formula: wt%

[0147] Fused zirconia corundum 70;

[0148] Zircon powder 20;

[0149] Submicron Al 2 o 3 8 ;

[0150] Submicron TiO 2 2 .

[0151] After mixing evenly, add 1-2wt% carboxymethyl cellulose, 1-2wt% modified starch, 0.5wt% glycerin, 20-25wt% water and stir evenly, granulate into plastic material on the granulator, and then extrude Extruded on the machine to form a 19-hole channel body with an outer diameter of Ф30mm and an inner diameter of Ф4mm. After drying, it is fired in a gas-fired shuttle kiln at a firing temperature of 1600-1700°C to obtain an inorganic membrane support.

[0152] Coat the fired inorganic membrane support with 0.2 μm Al 2 o 3 After drying the membrane, the membrane is fired at a temperature of 1100-1300°C to obtain an inorganic membrane tube.

[0153] This product is suitable for sewage treatment and filtration in the field of environmental protection.

Embodiment 2

[0155] Selected raw material formula: wt%

[0156] Fused zirconia corundum 80;

[0157] Zircon powder 5;

[0158] Submicron Al 2 o 3 13;

[0159] Submicron TiO 2 2 .

[0160] After mixing evenly, add 1-2wt% carboxymethyl cellulose, 1-2wt% modified starch, 0.5wt% glycerin, 20-25wt% water and stir evenly, granulate into plastic material on the granulator, and then extrude Extruded on the machine to form a single-hole channel body with an outer diameter of Ф40mm and an inner diameter of Ф30mm. After drying, it is fired in a gas-fired shuttle kiln at a firing temperature of 1600-1700°C to obtain an inorganic membrane support.

[0161] Coat the fired inorganic membrane support body with a 1 μm SiC film, dry it and then fire the film at a temperature of 1100-1300°C to obtain an inorganic membrane tube.

[0162] This product is suitable for industrial water recovery and utilization treatment in electroplating, printing and dyeing, papermaking, electronics factories, etc...

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Abstract

The invention discloses an inorganic film support. A formula of primary raw materials of the inorganic film support comprises 40-90 parts of zircon corundum, 3-35 parts of an inorganic additive and 1-25 parts of ultrafine inorganic additive powder; the inorganic additive is zirconium silicate powder; the ultrafine inorganic additive powder is one or a combination of zirconium dioxide, silica, titanium dioxide and alumina; and the average granularity of the ultrafine inorganic additive powder is in submicron level or nanometer level. The invention also discloses a making method of the inorganic film support. The making method comprises the following steps: uniformly mixing and granulating the primary raw materials for making the inorganic film support to obtain granules; carrying out extrusion molding the granules in a vacuum extruder to obtain a blank; and drying the extrusion-molded blank, and sintering at 1500-1800DEG C to obtain the inorganic film support. The inorganic film support has the advantages of high mechanical strength, high water flux, acid resistance, alkali resistance, high temperature resistance and strong regeneration capability.

Description

technical field [0001] The invention relates to the technical field of inorganic ceramic membranes, in particular to an inorganic membrane support and a preparation method thereof. Background technique [0002] Membrane filtration industry has developed rapidly in recent years. As a kind of filter separation membrane, inorganic (ceramic) membrane has the characteristics of high temperature resistance, high pressure resistance, strong acid and alkali resistance and chemical solvent medium, and has high filtration accuracy and clean state. Good, easy to clean and long service life and many other advantages. It has been widely used in chemical industry, medical treatment, food, environmental protection and many other fields, and the preparation methods are constantly being introduced. [0003] In the existing technology, commercial inorganic membrane supports are mainly sintered with high-purity special alumina. Generally, submicron alumina particles or sols are added to the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/10B01D71/02
Inventor 张效玉王哲冯斌
Owner 佛山市金刚材料科技有限公司