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A kind of multi-scale porous honeycomb ceramic and its preparation method

A honeycomb ceramic, multi-scale technology, applied in the direction of ceramic products, ceramic material production, clay products, etc., can solve the problems of high preparation cost, limited practical application, shortage of raw materials, etc., to increase added value, reduce site resources, reduce The effect of raw material costs

Active Publication Date: 2021-01-05
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, there are still many problems such as high preparation cost, shortage of raw materials and limited practical application of honeycomb ceramics. Therefore, further research is needed on the replacement of raw materials and performance improvement of honeycomb ceramics.

Method used

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  • A kind of multi-scale porous honeycomb ceramic and its preparation method
  • A kind of multi-scale porous honeycomb ceramic and its preparation method
  • A kind of multi-scale porous honeycomb ceramic and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] This embodiment provides a kind of multi-scale porous honeycomb ceramics (such as figure 1 with 2 ), based on the gross weight of the multi-scale porous honeycomb ceramics, the raw material consists of the following percentage components:

[0043]

[0044] The preparation method of described multi-scale porous honeycomb ceramics is as follows (as image 3 ):

[0045] (1) After mixing fly ash, clay, feldspar, magnesite, silicon carbide, and nano-silicon carbide, ball mill, stale, and secondary mud refining to obtain mud;

[0046] (2) extruding the mud material through an extruder at 8Mpa to obtain a honeycomb ceramic green body;

[0047] (3) The honeycomb ceramic green body is subjected to continuous microwave drying in a tunnel microwave oven, and sintered at 1100° C. for 4 hours.

Embodiment 2

[0049] This embodiment provides a kind of multi-scale porous honeycomb ceramics (such as Figure 4 , 5 , 6), based on the total weight of the multi-scale porous honeycomb ceramics, the raw material is composed of the following percentage components:

[0050]

[0051] The preparation method of the multi-scale porous honeycomb ceramics is the same as that in Example 1.

[0052] The preparation method of described multi-scale porous honeycomb ceramics is as follows (as image 3 ):

[0053] (1) After mixing fly ash, clay, feldspar, magnesite, silicon carbide, and nano-silicon carbide, ball mill, stale, and secondary mud refining to obtain mud;

[0054] (2) extruding the mud material through an extruder at 10Mpa to obtain a honeycomb ceramic green body;

[0055] (3) The honeycomb ceramic green body is subjected to continuous microwave drying in a tunnel microwave oven, and sintered at 1200° C. for 3 hours.

Embodiment 3

[0057] This embodiment provides a multi-scale porous honeycomb ceramic, based on the total weight of the multi-scale porous honeycomb ceramic, the raw material is composed of the following percentage components:

[0058]

[0059]The preparation method of the multi-scale porous honeycomb ceramics is the same as that in Example 1.

[0060] The preparation method of described multi-scale porous honeycomb ceramics is as follows (as image 3 ):

[0061] (1) After mixing fly ash, clay, feldspar, magnesite, silicon carbide, and nano-silicon carbide, ball mill, stale, and secondary mud refining to obtain mud;

[0062] (2) extruding the mud material through an extruder at 12Mpa to obtain a honeycomb ceramic green body;

[0063] (3) The honeycomb ceramic green body is subjected to continuous microwave drying in a tunnel microwave oven, and sintered at 1300° C. for 1 h.

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Abstract

The invention relates to the field of comprehensive utilization of solid waste resources and the field of preparation of inorganic non-metallic materials, and in particular, relates to a multi-scale pore honeycomb ceramic and a preparation method thereof. The multi-scale pore honeycomb ceramic comprises the raw materials: fly ash, an additive and a pore-preparing agent, wherein the pore-preparingagent is composed of a foaming agent and a pore-forming agent, the foaming agent is silicon carbide, and the pore-forming agent is nano silicon carbide. The preparation method of the multi-scale porehoneycomb ceramic comprises the steps: (1) mixing fly ash, an additive and the pore-preparing agent, and then carrying out ball milling, aging and secondary pugging to obtain pug; (2) carrying out extrusion molding on the pug through an extruder to prepare a honeycomb ceramic green body; and (3) drying the honeycomb ceramic green body, and sintering. According to the invention, the high-valued utilization of solid waste fly ash is realized, the additional value of the fly ash is increased, the manufacturing cost of the multi-scale porous honeycomb ceramic is reduced, and the performance of themulti-scale porous honeycomb ceramic is further improved.

Description

technical field [0001] The invention relates to the field of comprehensive utilization of solid waste resources and the field of preparation of inorganic non-metallic materials, in particular to a multi-scale porous honeycomb ceramic and a preparation method thereof. Background technique [0002] Coal-fired power generation is the most important way of coal utilization. At present, the main way of coal utilization in thermal power plants is to spray pulverized coal as fuel into the boiler for combustion and utilization. The temperature in the high-temperature furnace can reach 1200-1600°C. During the high-temperature process of pulverized coal, combustible substances are burned, and finally inorganic components and a small amount of unburned carbon are left. Due to the existence of high-temperature airflow in the furnace and the induced draft fan on the top of the furnace Under the action of suction, the solid components are processed along the pipeline through the heater, r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/02C04B38/00C04B33/13C04B33/135
CPCC04B33/131C04B33/1352C04B38/0006C04B38/02C04B2235/3206C04B2235/3463C04B2235/349C04B2235/3826Y02P40/60
Inventor 王习东王昊何贝妮陈子威刘丽丽
Owner PEKING UNIV
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