Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A mullite lightweight heat-insulating brick based on coke gem and its preparation method

A light heat insulation and mullite technology, which is applied in the production of clay products, other household utensils, ceramic materials, etc., can solve the problems of complex preparation process, low compressive strength, and high production cost, and achieve simple preparation process, durable The effect of high compressive strength and low cost

Active Publication Date: 2018-02-09
WUHAN UNIV OF SCI & TECH
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Then add foam made of 0.1~0.5wt% foaming agent as raw material, stir, and then add 0.5~2wt% gelling agent, 0.1~1wt% thermosetting water-soluble polymer compound and 0.5~2.5wt% coagulation accelerator Mullite lightweight insulation bricks are prepared by foaming and pouring. This method realizes the utilization of burnt stones in lightweight insulation materials to a certain extent, but its main defects are: (1) The preparation process is complicated; (2) It is difficult to form by casting method; (3) The production cost is high; (4) The compressive strength is low
But its main disadvantages are: (1) complex preparation process; (2) high cost; (3) low compressive strength

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 1

[0027] A mullite lightweight heat-insulating brick based on coke gemstones and a preparation method thereof. With 32~38wt% burnt gemstone, 28~32wt% kyanite, 20~24wt% clay and 14~18wt% α-alumina micropowder as raw materials, plus 30~38wt% sawdust, 9 ~11% mullite fiber and 27~35wt% binder, stir at room temperature for 6~8h, trap the material, shape, and dry naturally; then bake at 110~210℃ for 12~24h, at 1350~ Heat preservation at 1450°C for 2-5 hours to prepare mullite lightweight heat-insulating bricks based on burnt gemstones.

[0028] In this embodiment: the clay is Suzhou soil; the binding agent is water.

[0029] The mullite lightweight heat-insulating brick based on coke gemstones prepared in Example 1: thermal conductivity is 0.3~0.4W / (m K); linear shrinkage after firing is 0.1~0.5%; bulk density is 0.73~0.8 g / cm-3; compressive strength 4.0~5.0MPa.

Embodiment 2

[0031] A mullite lightweight heat-insulating brick based on coke gemstones and a preparation method thereof. Except following technical parameter, all the other are with embodiment 1:

[0032] In this embodiment: the clay is Fujian mud; the binder is aluminum sol.

[0033] The mullite lightweight heat-insulating brick based on coke gemstones prepared in Example 2: thermal conductivity 0.29~0.39W / (m K); linear shrinkage after firing 0.2~0.6%; bulk density 0.74~0.8g / cm-3; compressive strength 3.8~4.8MPa.

Embodiment 3

[0035] A mullite lightweight heat-insulating brick based on coke gemstones and a preparation method thereof. Except following technical parameter, all the other are with embodiment 1:

[0036] In this embodiment: the clay is bentonite; the binding agent is silica sol.

[0037] The mullite lightweight heat-insulating brick based on coke gemstones prepared in Example 3: thermal conductivity 0.28-0.38W / (m K); linear shrinkage rate after firing 0.3-0.6%; bulk density 0.7-0.76g / cm-3; compressive strength 3.6~4.6MPa.

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
particle diameteraaaaaaaaaa
lengthaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention specifically relates to a mullite lightweight heat-insulating brick based on burnt gemstones and a preparation method thereof. The technical solution is: use 20~38wt% burnt gemstone, 20~32wt% kyanite, 20~32wt% clay and 14~26wt% α-alumina micropowder as raw materials, plus 30~30wt% of the raw materials 50wt% sawdust, 5~11% mullite fiber and 10~35wt% binder, stirred at room temperature for 6~8h, trapped, molded, and dried naturally; then baked at 110~210°C for 12 ~24h, heat preservation at 1150~1450°C for 2~5h to prepare mullite lightweight heat insulating bricks based on burnt gemstones. The invention has the characteristics of low cost and simple process, and the prepared mullite light-weight heat-insulating brick based on burnt stone has low thermal conductivity, low bulk density, low linear shrinkage after firing and high compressive strength The advantages.

Description

technical field [0001] The invention belongs to the technical field of mullite lightweight heat insulating bricks. It specifically relates to a mullite lightweight heat-insulating brick based on coke gemstones and a preparation method thereof. Background technique [0002] With the rapid development of lightweight thermal insulation materials, it is very common to use clay to prepare lightweight thermal insulation refractory materials. However, there are not many applications of coke gemstones in lightweight insulation materials. Even if there is a small amount of coke gemstones mixed into lightweight heat insulating materials, the preparation process is complicated, the molding is difficult, the firing system is demanding, and the compressive strength of the product is not high. Its national standard (DLG150-0.8L) gdd bulk density is less than 0.8g / cm 3 , the compressive strength is greater than 2.5MPa, and the thermal conductivity at 35025°C is less than 0.35 W / (m K), w...

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 Patents(China)
IPC IPC(8): C04B35/66C04B33/132C04B33/13
CPCC04B33/132C04B35/6303C04B35/6316C04B35/66C04B2235/3206C04B2235/3208C04B2235/3217C04B2235/3232C04B2235/3244C04B2235/3272C04B2235/3418C04B2235/5228Y02P40/60
Inventor 李远兵陈若愚向若飞李淑静李亚伟桑绍柏
Owner WUHAN UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com