Preparation method of high-temperature-resistant basalt fiber

A technology of basalt fiber and high temperature resistance, which is applied in the field of fiber, can solve the problems of insufficient high temperature resistance of basalt fiber, and achieve the effects of enlarged drawing process range, increased peak temperature, and reduced high temperature viscosity

Inactive Publication Date: 2021-03-19
江苏绿材谷新材料科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of insufficient high temperature resistance of basalt fiber in the prior art, and provide a preparation method of high temperature resistant basalt fiber

Method used

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  • Preparation method of high-temperature-resistant basalt fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A preparation method of high temperature resistant basalt fiber, comprising the steps of:

[0019] (1) 160g of basalt ore is pulverized into 500 meshes to obtain ore powder, and in the ore powder, CeO is added to account for 1% of ore powder 2 , to obtain raw materials after mixing;

[0020] The basalt ore includes the following components in weight percentage: 52.39% SiO 2 , 12.61% Al 2 o 3 , 5.27% Fe 2 o 3 , 6.34% FeO, 6.23% CaO, 7.01% MgO, 2.91% Na 2 O, 1.52% K 2 O, 2.07% TiO 2 .

[0021] (2) heating and melting the raw materials, the melting temperature is 1500° C., and the melting time is 10 hours to prepare a basalt glass melt, and then flow it on a heat-resistant steel plate, and after cooling, a basalt glass block is obtained;

[0022] (3) Place the basalt glass block in a single-hole drawing crucible, adjust the temperature of the crucible to 1310°C, the height of the liquid level to 50mm, and the speed of the wire drawing machine to 1800r / min, and pre...

Embodiment 2

[0024] A preparation method of high temperature resistant basalt fiber, comprising the steps of:

[0025] (1) 160g basalt ore is pulverized into 500 meshes to obtain ore powder, add CeO accounting for 2% of ore powder in the ore powder 2 , to obtain raw materials after mixing;

[0026] The basalt ore includes the following components in weight percentage: 52.39% SiO 2 , 12.61% Al 2 o 3 , 5.27% Fe 2 o 3 , 6.34% FeO, 6.23% CaO, 7.01% MgO, 2.91% Na 2 O, 1.52% K 2 O, 2.07% TiO 2 .

[0027] (2) heating and melting the raw materials, the melting temperature is 1500° C., and the melting time is 10 hours to prepare a basalt glass melt, and then flow it on a heat-resistant steel plate, and after cooling, a basalt glass block is obtained;

[0028] (3) Place the basalt glass block in a single-hole wire drawing crucible, adjust the temperature of the crucible to 1320°C, the height of the liquid level to 50mm and the speed of the wire drawing machine to 1800r / min, and prepare basa...

Embodiment 3

[0030] A preparation method of high temperature resistant basalt fiber, comprising the steps of:

[0031] (1) 160g basalt ore is pulverized into 500 meshes to obtain ore powder, and in the ore powder, La 2 o 3 , to obtain raw materials after mixing;

[0032] The basalt ore includes the following components in weight percentage: 52.39% SiO 2 , 12.61% Al 2 o 3 , 5.27% Fe 2 o 3 , 6.34% FeO, 6.23% CaO, 7.01% MgO, 2.91% Na 2 O, 1.52% K 2 O, 2.07% TiO 2 .

[0033] (2) heating and melting the raw materials, the melting temperature is 1500° C., and the melting time is 10 hours to prepare a basalt glass melt, and then flow it on a heat-resistant steel plate, and after cooling, a basalt glass block is obtained;

[0034] (3) Place the basalt glass block in a single-hole wire drawing crucible, adjust the temperature of the crucible to 1305°C, the height of the liquid level to 50mm and the speed of the wire drawing machine to 1800r / min, and prepare basalt fibers through the cruci...

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Abstract

The invention relates to a preparation method of a high-temperature-resistant basalt fiber, which comprises the following steps: pulverizing basalt ore, adding 1-4% of a pro-oxidant which is one or acomposition of CeO2 or La2O3 into the ore powder, uniformly mixing, heating to melt to obtain a basalt glass melt, flowing onto a heat-resistant steel plate, and cooling to obtain a basalt glass block; and putting the basalt fiber into a single-hole wire drawing crucible, adjusting the temperature and the liquid level height of the crucible and the rotating speed of a wire drawing machine, and preparing the basalt fiber through a crucible wire drawing process. According to the method, CeO2 or La2O3 is added into the basalt ore raw material, under the action of high temperature, FeO in basalt is promoted to be oxidized into Fe2O3, so that the conversion temperature of a basalt vitreous body and the peak temperature of a crystallization peak are increased, the high-temperature viscosity is reduced, the crystallization upper limit temperature is reduced, the wiredrawing process range is enlarged, and wiredrawing operation is facilitated; and the prepared basalt fiber has excellent high temperature resistance.

Description

technical field [0001] The invention belongs to the field of fiber technology, and in particular relates to a preparation method of high temperature resistant basalt fiber. Background technique [0002] Basalt fiber is a fiber obtained from natural basalt ore as raw material, which is melted at a high temperature of about 1500°C, formed by a platinum-rhodium alloy bushing plate, and drawn by a wire drawing machine at high speed. Basalt continuous fiber not only has high strength, but also has various excellent properties such as electrical insulation, corrosion resistance, and high temperature resistance. In addition, the production process of basalt fiber determines that less waste is generated, less environmental pollution, and the product can be directly degraded in the environment after being discarded without any harm, so it is a veritable green and environmentally friendly material. [0003] Although basalt fiber has good heat resistance, it has been shown in practica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B37/00C03C13/06
CPCC03B37/00C03C13/06
Inventor 刘建勋吴智深魏星蒋鸣崔瀛
Owner 江苏绿材谷新材料科技发展有限公司
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