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Preparation method of basalt fibers

A basalt fiber and basalt technology, which is applied in glass manufacturing equipment, manufacturing tools, inorganic raw material rayon and other directions, can solve the problems of low tensile strength of basalt fiber, restrict the promotion of basalt fiber, etc., and achieve less waste and less environmental pollution. , the effect of excellent mechanical properties

Active Publication Date: 2021-01-12
贵州玄武岩新材料工程技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But at present, due to the low tensile strength of basalt fiber, the further promotion of basalt fiber in the application field is limited

Method used

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  • Preparation method of basalt fibers
  • Preparation method of basalt fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of preparation method of basalt fiber, comprises the following steps:

[0028] (1) Pulverize the natural basalt ore and pass through a 100-200 mesh screen to obtain basalt ore powder, add the basalt ore powder to a phosphoric acid solution with a mass concentration of 50% and soak for 15 minutes, filter out and wash with water after the treatment is completed After reaching neutrality, put it into a sodium hydroxide solution with a mass concentration of 20% for soaking treatment for 2 minutes. After the treatment is completed, filter it out and wash it with water until it is neutral, then dry it at 120°C for later use;

[0029] (2) Add the above-mentioned basalt ore powder into the furnace, raise the temperature to 850°C under the protection of nitrogen, and then add a certain amount of carbon powder. The weight ratio of basalt ore powder to carbon powder is 50:1, and continue to heat up to 1400 ℃ to get the basalt solution, keep it warm for 15 minutes, and then ...

Embodiment 2

[0035] A kind of preparation method of basalt fiber, comprises the following steps:

[0036] (1) Pulverize the natural basalt ore and pass through a 100-200 mesh screen to obtain basalt ore powder, add the basalt ore powder to a phosphoric acid solution with a mass concentration of 55% and soak for 20 minutes, filter out and wash with water after the treatment is completed After reaching neutrality, put it into a sodium hydroxide solution with a mass concentration of 15% for soaking treatment for 2 minutes. After the treatment is completed, filter it out and wash it with water until it is neutral, then dry it at 120°C for later use;

[0037] (2) Add the above-mentioned basalt ore powder into the furnace, raise the temperature to 800°C under the protection of nitrogen, then add a certain amount of carbon powder, the weight ratio of basalt ore powder to carbon powder is 50:1, and continue to heat up to 1400°C ℃ to get the basalt solution, keep it warm for 12 minutes, and then fl...

Embodiment 3

[0043] A kind of preparation method of basalt fiber, comprises the following steps:

[0044] (1) Pulverize the natural basalt ore and pass through a 100-200 mesh screen to obtain basalt ore powder, add the basalt ore powder to a phosphoric acid solution with a mass concentration of 40% and soak for 10 minutes, filter out and wash with water after the treatment is completed After reaching neutrality, put it into a sodium hydroxide solution with a mass concentration of 12% for soaking treatment for 2 minutes. After the treatment is completed, filter it out and wash it with water until it is neutral, then dry it at 120°C for later use;

[0045] (2) Add the above-mentioned basalt ore powder into the furnace, raise the temperature to 880°C under the protection of nitrogen, then add a certain amount of carbon powder, the weight ratio of basalt ore powder to carbon powder is 45:1, and continue to heat up to 1400 ℃ to get the basalt solution, keep it warm for 15 minutes, and then flow...

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Abstract

The invention provides a preparation method of basalt fibers, and relates to the technical field of basalt fibers, and the preparation method comprises the following steps: soaking basalt ore powder in a phosphoric acid solution and a sodium hydroxide solution, and drying at 100-120 DEG C; adding the raw material into a smelting furnace, adding a certain amount of carbon powder, continuously heating to 1,400-1,500 DEG C to obtain a basalt solution, and carrying out high-speed drawing molding by using a wire drawing machine to obtain basalt protofilaments, wherein a filament root cooler is usedfor cooling while a sodium carbonate solution is sprayed in the high-speed drawing molding process; carrying out infiltering modification treatment on the basalt protofilaments by using an infiltering agent, drying the basalt protofilaments subjected to infiltering modification treatment by using a hot-air blower, and carrying out unwinding and doubling twisting to obtain the basalt fibers. Moreover, the basalt fiber also has various excellent properties such as electrical insulation, corrosion resistance, combustion resistance and high temperature resistance, is excellent in mechanical property, and has the tensile strength improved by 15-30% compared with basalt fibers on the market at present.

Description

technical field [0001] The invention relates to the technical field of basalt fiber, in particular to a preparation method of basalt fiber. Background technique [0002] Basalt is an igneous rock formed by the condensation of underground magma erupted from volcanoes or spilled from surface cracks. It is distributed in every region of the earth. Therefore, in principle, the production of basalt fibers will not be limited by regions or raw materials, but it is really suitable for drawing. Natural basalt ore is not abundant. The composition of basalt rock is very complex, and the composition of basalt rock in different regions is different. [0003] Basalt fiber is made of natural basalt ore melted at a high temperature of 1400-1500 ℃, and quickly drawn through a platinum-rhodium alloy bushing. The production process does not produce waste gas, waste water, or waste residue. Even if the product is discarded, it can be directly transferred to the ecological environment. Among ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C13/06C03B37/022C03C25/465C03C25/36D01F9/08
CPCC03C13/06C03B37/022C03C25/465C03C25/36D01F9/08Y02P40/57
Inventor 张兴颖
Owner 贵州玄武岩新材料工程技术开发有限公司
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