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Aluminosilicate ceramic fiber based on kyanite tailings and preparation method thereof

A technology of kyanite tailings and aluminum silicate ceramics, which is applied in the field of aluminum silicate ceramic fibers, can solve the problems of high content of low melting phase, low utilization rate of kyanite tailings, limitation of use temperature and high temperature strength, etc. Low cost, great industrialization prospect, high temperature effect

Inactive Publication Date: 2016-02-10
WUHAN UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are technologies for the reuse of kyanite tailings, such as the patented technology of "a method for preparing glass fiber from kyanite tailings" (CN103193382A), which discloses a method for preparing glass fibers using kyanite tailings as the main raw material. Technology, the fiber products produced by this technology have a large content of low melt phase, the use temperature and high temperature strength are limited, and the utilization rate of kyanite tailings is relatively low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] An aluminum silicate ceramic fiber based on kyanite tailings and a preparation method thereof. First, 90.0~91.0wt% kyanite tailings fine powder, 2.0~2.5wt% wollastonite, 4.0~5.0wt% zircon, 1.7~2.0wt% rare earth and 1.3~1.5wt% V 2 o 5 As the raw material, mix it evenly, then place the evenly mixed raw material in a resistance furnace or an electric arc furnace, heat up to 1900~1950°C, spin the wire directly after melting, and then get the aluminum silicate ceramic fiber based on kyanite tailings.

[0026] The aluminum silicate ceramic fiber based on kyanite tailings prepared in this example is tested: the linear shrinkage of fiber products is less than 2%, and the bulk density of cotton batting is 85~86Kg / m 3 ; Moisture content ≤ 0.2wt%; combustible content 0.45~0.50wt%; fiber blanket tensile strength 21.0~22.0KPa.

Embodiment 2

[0028] An aluminum silicate ceramic fiber based on kyanite tailings and a preparation method thereof. First, 92.0~93.0wt% kyanite tailings fine powder, 1.5~2.0wt% wollastonite, 3.0~4.0wt% zircon, 1.2~1.5wt% rare earth and 0.8~1.0wt% V 2 o 5 As the raw material, mix it evenly, then place the evenly mixed raw material in a resistance furnace or an electric arc furnace, heat up to 1950~2000°C, spin the wire directly after melting, and then get the aluminum silicate ceramic fiber based on kyanite tailings.

[0029] The aluminum silicate ceramic fiber based on kyanite tailings prepared in this example is tested: the linear shrinkage of the fiber product is less than 2%, and the bulk density of the batting is 87~88Kg / m 3 ; Moisture content ≤ 0.2wt%; combustible content 0.35~0.40wt%; fiber blanket tensile strength 22.0~23.0KPa.

Embodiment 3

[0031] An aluminum silicate ceramic fiber based on kyanite tailings and a preparation method thereof. First, 94.0~95.0wt% kyanite tailings fine powder, 1.0~1.5wt% wollastonite, 2.0~3.0wt% zircon, 0.8~1.1wt% rare earth and 0.6~0.8wt% V 2 o 5 As the raw material, mix it evenly, then place the evenly mixed raw material in a resistance furnace or an electric arc furnace, heat up to 2000~2050°C, spin the wire directly after melting, and then get the aluminum silicate ceramic fiber based on kyanite tailings.

[0032] The aluminum silicate ceramic fiber based on kyanite tailings prepared in this example is tested: the linear shrinkage of the fiber product is less than 2%, and the bulk density of the batting is 85.5~86.5Kg / m 3 ; Moisture content ≤ 0.2wt%; combustible content 0.28~0.33wt%; fiber blanket tensile strength 23.7~24.7KPa.

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Abstract

The invention relates to an aluminum silicate ceramic fiber based on kyanite tailings and a preparation method thereof. Its technical plan is: first use 90.0~97.0wt% kyanite tailings fine powder, 0.5~2.5wt% wollastonite, 1.0~5.0wt% zircon, 0.5~2.0wt% carbonic acid composite rare earth and 0.3~1.5wt% V2O5 is used as raw material, mix evenly, then place the evenly mixed raw material in a resistance furnace or an electric arc furnace, heat up to 1900~2300°C, spin the wire directly after melting, and then get kyanite tailings-based silicon Acid aluminum ceramic fiber. The invention has the characteristics of high resource recovery rate, environmental friendliness, simple process and low production cost; the prepared aluminum silicate ceramic fiber based on kyanite tailings has small linear shrinkage, high tensile strength and relatively low service temperature. high.

Description

technical field [0001] The invention belongs to the technical field of aluminum silicate ceramic fiber. It specifically relates to an aluminum silicate ceramic fiber based on kyanite tailings and a preparation method thereof. Background technique [0002] Ceramic fiber is a relatively new inorganic material, which has been widely used in various industrial kilns. The main advantages of ceramic fiber are strong heat preservation ability, less heat storage, good thermal shock resistance, and help to keep the temperature inside the kiln Uniform distribution, shorten firing cycle, increase production and save energy. At present, the amorphous aluminum silicate fiber is mostly used in the ceramic industry. It is made by melting method and has the advantages of light bulk density, high temperature resistance, good thermal stability, low thermal conductivity, small heat capacity, and good mechanical vibration resistance. The advantages of small thermal expansion and good thermal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/18C04B35/622
Inventor 李远兵吴继海徐娜娜段斌文方胜李淑静李亚伟桑绍柏
Owner WUHAN UNIV OF SCI & TECH