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Preparation method of environment-friendly alkaline-free fireproof fibers

A refractory fiber and environment-friendly technology, applied in the field of refractory fibers, can solve the problems of environmental pollution and volatile, and achieve the effects of low slag ball content, high refractoriness and safe method

Inactive Publication Date: 2015-04-29
SHANDONG LIYOUN NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, 0-5% of B is added to the production of alkali-free refractory fibers on the market 2 o 3 As co-solvent, B 2 o 3 Easy to volatilize, causing environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Diopside 34.11Wt%, quartz sand 33.25Wt%, calcite 28.47Wt% and phosphate rock 4.17Wt% are raw materials, and its chemical composition is as follows: SiO 2 : 63.64%, MgO: 4.77%, CaO: 28.36%, Al 2 o 3 :1.02%, Fe 2 o 3 :0.25%, P 2 o 5 : 1.2%, mixed and crushed to 100 mesh, melted in a resistance furnace at 1500°C, and centrifuged to form fiber cotton with a diameter of 1-10 microns and a length of 50-200 mm. It is widely used in various thermal equipment and pipelines as an alternative material for aluminum silicate fibers.

Embodiment 2

[0031] Diopside 43.26Wt%, quartz sand 27.05Wt%, calcite 25.90Wt% are raw materials, and its chemical composition is as follows: SiO 2 :62.03%, MgO:8.05%, CaO:27.98%, Al 2 o 3 :1.99% Fe 2 o 3 : 0.32%, mixed and crushed to 100 mesh, melted in a resistance furnace at 1400 ° C, and centrifugally spun into fiber cotton with a diameter of 1-10 microns and a length of 50-200 mm. It is widely used in various thermal equipment and pipelines as an alternative material for aluminum silicate fibers.

Embodiment 3

[0033] Diopside 34.11Wt%, quartz sand 33.25Wt%, calcite 28.47Wt% and phosphate rock 4.17Wt% are raw materials, and its chemical composition is as follows: SiO 2 :62.32%, MgO:7.02%, CaO:28.79%, Al 2 o 3 :1.01%, Fe 2 o 3 :0.3%,P 2 o 5 : 1.02%, mixed and crushed to 100 mesh, melted in a resistance furnace at 1485°C, and centrifuged to form fiber cotton with a diameter of 1-10 microns and a length of 50-200 mm. It is widely used in various thermal equipment and pipelines as an alternative material for aluminum silicate fibers.

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Abstract

The invention belongs to the field of fireproof fibers and particularly relates to a preparation method of environment-friendly alkaline-free fireproof fibers. The fibers are prepared by preparing raw materials, melting, centrifugally throwing threads or blowing to form fibers by using natural diopside, quartz sands, calcite, coal gangue and phosphate ores as the raw materials. The diameters of the obtained fibers are 1-10 mm and the lengths are 50-200 mm. The fibers have the advantages of high degree of fire resistance, non-combustion property, low shot content, good biodegradability and the like, and are aluminium silicate fiber substitute materials which are widely applied to various thermal equipment and pipelines.

Description

technical field [0001] The invention belongs to the field of refractory fibers, and in particular relates to a preparation method of an environment-friendly alkali-free refractory fiber. Background technique [0002] The advantages of aluminum silicate series refractory fiber are high temperature and good performance at high temperature, but its biggest defect is that it is not degradable, harmful to human body, and causes certain harm to the environment. At present, it has been increasingly popular in some developed countries. usage restrictions. [0003] In recent years, developed countries in Europe and the United States have made remarkable achievements in the development of biodegradable refractory glass fibers. Its main components are silica, alumina, calcium oxide, boron oxide, magnesium oxide, sodium oxide, etc. It can be divided into alkali-free glass fiber (sodium oxide 0% to 2%, belonging to aluminoborosilicate glass), medium alkali glass fiber (sodium oxide 8% t...

Claims

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Application Information

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IPC IPC(8): C04B35/66D01F9/08
Inventor 李科李强刘伟孙佳王荣华杨国强张小娟张涛
Owner SHANDONG LIYOUN NEW MATERIAL
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