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A full particle ceramic bonded filter and its preparation method

A filter and full-particle technology, applied in chemical instruments and methods, separation methods, filtration and separation, etc., can solve the problems of high porosity of ceramic filters, difficulty in meeting modern production, and restrictions on wide application, etc., and achieve low cost , Long service life, high temperature effect

Active Publication Date: 2021-11-30
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, ceramic filters are mainly made of foam ceramics. The preparation process is complicated, the preparation temperature is high, and there are special requirements for equipment. Moreover, the prepared ceramic filters have high porosity and low strength, and sintering aids are added. It is difficult to Meet the needs of modern production
There are many manufacturing processes for ceramic filters, but the current manufacturing processes are difficult to apply to industrial production
Therefore, the manufacturing process of ceramic filters needs further research and improvement, and the current ceramic filter system also limits its wider application

Method used

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  • A full particle ceramic bonded filter and its preparation method
  • A full particle ceramic bonded filter and its preparation method
  • A full particle ceramic bonded filter and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Weigh the large particles of clay, red mud and silicon carbide according to the proportion, place them in the grinding body according to the ratio of material to ball ratio of 1:10, put the material balls in the ball mill tank with water as the dispersion medium, and mix the powder and water The mass ratio of clay to red mud is 1:10, the mass ratio of clay to red mud is 1:2, and the ratio of silicon carbide to (clay + red mud) is 1:4. The mixed material is ball milled with a planetary ball mill at a speed of 150r / min , ball milling time 120min. Put the mixed slurry for the full particle ceramic bonded filter into the pre-prepared model and use the gel injection molding process to form the filter. After demoulding, the blank of the full particle ceramic bonded filter is obtained, such as figure 2 shown. The blank is placed in a muffle furnace for sintering according to the temperature regime and holding time designed in the experiment. The rate of temperature rise was...

Embodiment 2

[0031] Weigh the large particles of clay, red mud and silicon carbide according to the proportion, place them in the grinding body according to the ratio of material to ball ratio of 1:10, put the material balls in the ball mill tank with water as the dispersion medium, and mix the powder and water The mass ratio of clay to red mud is 1:10, the mass ratio of clay to red mud is 1:3, and the ratio of silicon carbide to (clay + red mud) is 1:5. The mixed material is ball milled with a planetary ball mill at a speed of 150r / min, ball milling time 120min. The prepared mixed slurry for the full particle ceramic bonded filter is placed in the pre-prepared model to form the filter by gel injection molding, and the blank of the full particle ceramic bonded filter is obtained after demoulding. The blank is placed in a muffle furnace for sintering according to the temperature regime and holding time designed in the experiment. The rate of temperature rise was 10°C / min. The sintering p...

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Abstract

The invention relates to a full particle ceramic bonded filter and a preparation method thereof, belonging to the field of foam and particle ceramic filters. The filter is prepared from the following raw materials: large particle silicon carbide, binder and solvent. The present invention uses large particle SiC as a matrix, adds clay and red mud with different volume fractions as a new full particle ceramic bonded filter material system, and breaks through the traditional foam ceramic material system. The invention uses clay and red mud as additives, and uses a water-based gel injection molding process, so the preparation process is simple, energy is saved, the cost is low, and the preparation process is green, environment-friendly and pollution-free. The present invention utilizes muffle furnace low-temperature co-sintering technology to prepare full particle ceramic bonded filters under high temperature and aerobic conditions. The bonded filter has better corrosion resistance, long service life, and broadens the application range of materials.

Description

technical field [0001] The invention relates to a full particle ceramic bonded filter and a preparation method thereof, belonging to the field of foam and particle ceramic filters. Background technique [0002] At present, ceramic filters are more and more widely used in many industrial fields, such as catalytic precious metal recovery, fluidized bed combustion, calcination, organic waste gasification power generation, building materials, chemical industry and various industrial kilns, furnaces and other industrial processes. Flue gas purification. The application of high temperature flue gas purification will also appear in smelting, material production and glass manufacturing. Silicon carbide foam ceramics is a common filter that can effectively filter impurities in molten metal, and has become the material of choice for filtering high-temperature liquids. There is still a certain gap between domestic full-grain ceramic filters and foreign filters in terms of performance...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/20
CPCB01D39/2075
Inventor 李庆刚杨海玲王志史国普李金凯赵丕其黄世峰程新
Owner UNIV OF JINAN