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Preparation method of fly ash ceramic membrane

A technology of fly ash and ceramic membrane, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problem of high cost of ceramic membrane raw materials, and achieve easy control of membrane thickness, stable dispersion performance and low cost. Effect

Inactive Publication Date: 2019-01-11
TANGSHAN KAILUAN CHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of high raw material cost of ceramic membranes, the present invention discloses a method for preparing cheap ceramic membranes using spherical particle fly ash as raw material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Using spherical particle fly ash with an average particle size of 15 μm as raw material, add 3% carboxymethyl cellulose and an appropriate amount of water, mix evenly, extrude and dry to obtain a support body green body with an outer diameter of 1 cm and a thickness of 2 mm. The temperature was raised to 850°C at 5°C / min, and the support was obtained by constant temperature sintering for 1 hour. Utilize spherical particle fly ash with an average particle size of 8 μm, add polyethylene glycol, water and a small amount of carboxymethyl cellulose to make a slurry containing 4% fly ash, coat it on the support, dry naturally, and pass through 5 °C / min is heated to 850°C, and sintered for 1 hour to obtain a transition layer, and then use spherical particle fly ash with an average particle size of 5 μm, add polyethylene glycol, water and a small amount of carboxymethyl cellulose to make the fly ash 4 % slurry, which was coated on the transition layer, dried naturally, heated t...

Embodiment 2

[0015] Using spherical particle fly ash with an average particle size of 15 μm as raw material, add 3% carboxymethyl cellulose and an appropriate amount of water, mix evenly, extrude and dry to obtain a support body green body with an outer diameter of 1 cm and a thickness of 2 mm. 3 ° C / min heating up to 1050 ° C, constant temperature sintering for 4 hours to obtain the support body. Utilize spherical particle fly ash with an average particle size of 8 μm, add polyethylene glycol, water and a small amount of carboxymethyl cellulose to make a slurry containing 4% fly ash, coat it on the support, dry naturally, and pass through 3 °C / min is heated to 1050°C, and sintered for 2 hours to obtain a transition layer, and then use spherical particle fly ash with an average particle size of 5 μm, add polyethylene glycol, water and a small amount of carboxymethyl cellulose to make the fly ash 4 % slurry, which was applied to the transition layer, dried naturally, heated to 1050°C at 3...

Embodiment 3

[0017] Using spherical particle fly ash with an average particle size of 15 μm as raw material, add 3% carboxymethyl cellulose and an appropriate amount of water, mix evenly, extrude and dry to obtain a support body green body with an outer diameter of 1 cm and a thickness of 2 mm. 3 ° C / min heating up to 1050 ° C, constant temperature sintering for 4 hours to obtain the support body. Utilize spherical particle fly ash with an average particle size of 8 μm, add polyethylene glycol, water and a small amount of carboxymethyl cellulose to make a slurry containing 4% fly ash, coat it on the support, dry naturally, and pass through 3 °C / min is heated to 1050°C, and sintered for 2 hours to obtain a transition layer, and then use spherical particle fly ash with an average particle size of 2 μm, add polyethylene glycol, water and a small amount of carboxymethyl cellulose to make a fly ash-containing 4 % slurry, which was applied to the transition layer, dried naturally, heated to 10...

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Abstract

The invention discloses a preparation method of a fly ash ceramic membrane. The preparation method comprises: (1) preparation of a support body: uniformly mixing spherical granule fly ash, a binder and a small amount of water and carrying out molding, drying and sintering, and (2) coating of the support body with a coating liquid prepared from the spherical granule fly ash, drying and sintering. The fly ash ceramic membrane realizes a low production cost, has pure water flux obviously higher than that of other inorganic membranes, has obvious anti-pollution properties and can be used for the fields of particle filtration and cold sterilization.

Description

technical field [0001] The invention relates to the field of inorganic membrane materials, in particular to a method for preparing a fly ash ceramic membrane. Background technique [0002] Membrane material is the core of membrane separation technology, and its chemical properties, composition and structure play an important role in membrane separation performance. At present, solid membranes with separation function are mainly divided into two categories: organic polymer membranes and inorganic membranes. In recent years, inorganic membranes have been developed rapidly, which are made of inorganic materials such as metals, metal oxides, ceramics, porous glass, zeolites, etc. Among them, ceramic membranes are known for their best thermal stability, mainly Al 2 o 3 Membrane, ZrO 2 film, TiO 2 film etc. At present, most of the raw materials for producing ceramic membranes are metal oxide powders, and the cost of raw materials is relatively high. In addition, since metal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/02B01D69/10B01D67/00
CPCB01D67/0039B01D69/10B01D71/02
Inventor 李洪娟刘莉莉李建华郭学华秦国彤方晶王亚涛丁肖肖
Owner TANGSHAN KAILUAN CHEM TECH CO LTD
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