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Raw material for preparing porous ceramic material and preparation method of porous ceramic material

A technology of porous ceramics and raw materials, applied in ceramic products, applications, household appliances, etc., can solve the problems of polluting the atmosphere, consuming clay resources, complex processes, etc., and achieve the effects of improving sintering performance, improving bonding ability, and improving strength

Active Publication Date: 2020-05-05
INNER MONGOLIA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Porous ceramics used for liquid-solid filtration and separation, water permeability and ventilation, biological fermentation, etc. usually have a pore size of tens to hundreds of microns and a porosity greater than 30%. At present, clay materials are mainly used as raw materials. Synthesis by impregnation method or foaming method; the process is relatively complicated and there are problems of sintering to form volatile harmful gases, pollute the atmospheric environment, and consume clay resources

Method used

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  • Raw material for preparing porous ceramic material and preparation method of porous ceramic material
  • Raw material for preparing porous ceramic material and preparation method of porous ceramic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Select desert sand of 50-60 mesh group as aggregate.

[0038](2) Weigh desert sand, sintering aid, reinforcing phase powder and water glass: desert sand is 85kg, sintering aid is 15kg, and the mass ratio of kaolin and calcium carbonate in sintering aid is 75:25; reinforcing phase powder is Silicon carbide, the quality of silicon carbide is 10% of the mass of sintering aid, and the quality of water glass is 5% of the mass of desert sand.

[0039] (3) Kaolin, calcium carbonate and silicon carbide were mixed ball milled for 60 minutes, and the proportion of water added during the ball milling process was 40% of the total mass of the kaolin, calcium carbonate and silicon carbide mixture.

[0040] (4) Add the ball-milled slurry and the weighed water glass into the desert sand, then mix with a mixer for 30 minutes, keep warm at 90°C for 300 minutes, and drain.

[0041] (5) The dehydrated raw material is formed on a press with a pressure of 10 MPa; the formed blank is kep...

Embodiment 2

[0045] (1) Select desert sand of 60-80 mesh group as aggregate.

[0046] (2) Weigh desert sand, sintering aid, reinforcing phase powder and water glass: desert sand is 85kg, sintering aid is 15kg, the mass ratio of kaolin and calcium carbonate in sintering aid is 75:25, and reinforcing phase powder It is zirconia, and the quality of zirconia is 10% of the mass of sintering aid, and the quality of water glass is 5% of that of desert sand.

[0047] (3) Kaolin, calcium carbonate and zirconia were mixed and ball milled for 60 minutes, and the proportion of water added during the ball milling process was 40% of the total mass of the kaolin, calcium carbonate and zirconia mixture.

[0048] (4) Add the ball-milled slurry and the weighed water glass into the desert sand, then mix with a mixer for 30 minutes, keep warm at 90°C for 300 minutes, and drain.

[0049] (5) The dehydrated raw material is formed on a press with a pressure of 15 MPa; the formed blank is kept at 100° C. for 40 ...

Embodiment 3

[0053] (1) Select desert sand of 80-100 mesh group.

[0054] (2) Weigh desert sand, sintering aid, reinforcing phase powder and water glass: desert sand is 85kg, sintering aid is 15kg, the mass ratio of kaolin and calcium carbonate in sintering aid is 75:25, and reinforcing phase powder It is silicon carbide, the quality of silicon carbide is 10% of the mass of sintering aid, and the quality of water glass is 5% of the mass of desert sand.

[0055] (3) Kaolin, calcium carbonate and silicon carbide were mixed ball milled for 60 minutes, and the proportion of water added during the ball milling process was 40% of the total mass of the kaolin, calcium carbonate and silicon carbide mixture.

[0056] (4) Add the ball-milled slurry and the weighed water glass into the desert sand, then mix with a mixer for 30 minutes, keep warm at 90°C for 300 minutes, and drain.

[0057] (5) The dehydrated raw material is formed on a press with a pressure of 5 MPa; the formed blank is kept at 100°...

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Abstract

The invention discloses a raw material for preparing a porous ceramic material and a preparation method of the porous ceramic material. The raw material consists of the following components: desert sand, a sintering aid, reinforced phase powder, water glass and water. The preparation method of the porous ceramic material comprises the following steps: screening and grading desert sand; weighing desert sand, a sintering aid, the reinforced phase powder and water glass; ball-milling the sintering aid and the reinforced phase powder together, and adding water during ball-milling; adding desert sand into the ball-milled slurry, adding water glass, mixing in a mixer, keeping the temperature, and discharging water; pressurizing and molding the dehydrated raw materials on a press machine, and heating to harden a blank after molding; and sintering the blank at high temperature to obtain the porous ceramic material. The obtained porous ceramic is stable in structure, has the characteristics ofhigh porosity and high strength, and can be applied to multiple fields of diffusion dehumidification, liquid-solid filtration separation, water and gas permeation, biological fermentation and the like.

Description

technical field [0001] The invention relates to the technical field of inorganic materials. Specifically, it is a raw material for preparing a porous ceramic material and a preparation method for the porous ceramic material. Background technique [0002] Porous ceramics have the characteristics of small bulk density and high specific surface area, and are widely used in environmental protection, chemical industry, building materials and other fields, such as gas and liquid filtration, purification, sound absorption and shock absorption, thermal insulation, etc. The synthesis methods of porous ceramics mainly include adding pore-forming agents, organic foam impregnation, foaming, and particle stacking sintering. Among them, the pore-forming agent method, the organic foam impregnation method and the foaming method use more organic substances, which generate volatile harmful gases during the sintering process and seriously pollute the atmospheric environment. [0003] In cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B35/14C04B35/622C04B35/64
CPCC04B38/00C04B38/0025C04B35/14C04B35/622C04B35/64C04B2235/349C04B2235/442C04B2235/3826C04B2235/3244
Inventor 史志铭王士刚王文彬闫华
Owner INNER MONGOLIA UNIV OF TECH
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