Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method for SiC-based porous ceramic used for high-temperature filtering support body

A technology of porous ceramics and supports, applied in ceramic products, applications, household appliances, etc., to achieve the effect of uniform distribution of components and high flexural strength

Inactive Publication Date: 2016-04-27
SHAANXI SHENGMAI PETROLEUM
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the raw gas generated by coal gasification at high temperature contains a large amount of dust, so it needs to be removed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] A method for preparing a SiC-based porous ceramic for a high-temperature filter support body, comprising the following steps:

[0017] Step 1: prepare 2% carboxymethyl cellulose aqueous solution with deionized water.

[0018] Step: 2: Prepare binder: mix 64.53% feldspar, 12.20% kaolin and 23.27% silicon dioxide, use absolute ethanol as dispersion medium, ball mill for 36 hours to make it evenly mixed, then dry at 80°C 10h.

[0019] Step 3: Prepare SiC-based porous ceramics for high-temperature filter supports: press the mixed binder into a disc, mix the SiC powder and carboxymethyl cellulose solution evenly, then add 15% binder, and stir Evenly put it into the oven for baking, grind the baked mixed material evenly, and then press it into a disc; then sinter the binder green body and the porous ceramic green body, then keep it warm for 1 hour, and finally cool it with the furnace. Made of SiC-based porous ceramics for high-temperature filter supports.

[0020] Wherein...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
sizeaaaaaaaaaa
sizeaaaaaaaaaa
flexural strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of preparation of rare metal materials, specifically to a preparation method for a SiC-based porous ceramic used for a high-temperature filtering support body. The preparation method comprises the following steps: preparing an aqueous carboxymethyl cellulose solution with a concentration of 2% by using deionized water; mixing feldspar, kaolin and silica, carrying out uniform mixing through ball milling with absolute ethyl alcohol as a dispersion medium and then carrying out drying; pressing the uniformly mixed binder to form a round tablet, uniformly mixing SiC powder with the carboxymethyl cellulose solution, then adding the binder, carrying out uniform mixing under stirring and then successively carrying out baking, uniform grinding and pressing so as to obtain a round flake; and sintering the binder and porous ceramic and then successively carrying out heat preservation and cooling in the furnace. The SiC-based porous ceramic has high bending strength, as high as 36.6 MPa; the SiC-based porous ceramic has high porosity and narrow pore size distribution, wherein an average pore size is 24 [mu]m and porosity is 34.3%; and after sintering, the binder includes a glass phase and a quartz phase, and distribution of components is uniform.

Description

technical field [0001] The invention relates to the technical field of preparation of rare metal materials, in particular to a method for preparing SiC-based porous ceramics for high-temperature filter supports. Background technique [0002] Converting coal into gas can not only improve the energy efficiency of coal, but also greatly reduce environmental pollution. However, the raw gas generated by gasification of coal at high temperature contains a large amount of dust, so it needs to be removed. This requires a filter and dust removal system that operates at high temperature, and its core part is the filter material that can be used at high temperature. Porous ceramics are high-temperature resistant materials widely used in the fields of filtration, catalyst carriers, sensors, etc., and SiC is a ceramic material with good thermal shock resistance, oxidation resistance, good mechanical strength and chemical stability. , is one of the very suitable raw materials for the pr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00
CPCC04B38/0038
Inventor 王耀斌
Owner SHAANXI SHENGMAI PETROLEUM