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A kind of preparation method of aluminum silicate fiber

A technology of aluminum silicate fiber and clinker, used in glass manufacturing equipment, manufacturing tools, etc., can solve the problems of large heat loss, large gap between raw materials, and small heating area of ​​raw materials.

Active Publication Date: 2018-12-07
LUYANG ENERGY SAVING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Affected by the large particle size of raw materials, the heating area of ​​raw materials is small, and the gap between raw materials is large. During the melting process of raw materials, more heat is lost, resulting in slow melting speed of raw materials and increased energy consumption.

Method used

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  • A kind of preparation method of aluminum silicate fiber
  • A kind of preparation method of aluminum silicate fiber

Examples

Experimental program
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preparation example Construction

[0019] The invention provides a kind of preparation method of aluminum silicate fiber, comprises the following steps:

[0020] The raw material clinker of aluminum silicate fiber is crushed, melted and centrifuged in turn to obtain aluminum silicate fiber;

[0021] The particle size gradation of the pulverization is as follows: the mass percent content of 2-5mm particle diameter is 50-99%; the mass percent content of 0-2mm particle diameter is 1-50%.

[0022] The preparation method in the present invention has fast raw material melting rate and low energy consumption.

[0023] In the present invention, the raw material clinker of the aluminum silicate fiber preferably includes one or more of burnt gemstone clinker, coal gangue clinker, kaolinite clinker and bauxite clinker, wherein, burnt gemstone clinker In clinker, Al 2 o 3 : 40-50%, Al 2 o 3 +SiO2 2 ≥97%, Fe 2 o 3 2 o 3 : 40-50%, Al 2 o 3 +SiO2 2 ≥97%, Fe 2 o 3 2 o 3 : 20-40%, Al 2 o 3 +SiO2 2 ≥96%, Fe 2 ...

Embodiment 1

[0040] 80 parts by weight of coal gangue clinker are processed and crushed until particle diameters of 2 to 5 mm account for 70%, and those within 2 mm account for 30%; It accounts for 30% within; then, it is evenly mixed by a mixer, and melted at a temperature of 2100 ° C, and the formed molten liquid is centrifugally spun to prepare aluminum silicate fibers. In the obtained aluminum silicate fiber, Al 2 o 3 39-42%, Al 2 o 3 +SiO2 2 ≥98%, Fe 2 o 3 <1%.

[0041] The present invention has tested the fiber diameter, tensile strength, thermal conductivity and heating permanent line change of the aluminum silicate fiber in this embodiment respectively, and the results are shown in Table 1, and Table 1 is Examples 1 to 5 of the present invention and Comparative Example 1 The performance parameters of the obtained aluminum silicate fiber.

Embodiment 2

[0043] 80 parts by weight of coal gangue clinker are processed and crushed until the particle size is 2-5mm, accounting for 60%, and 20% of the kaolinite clinker is processed and crushed until the particle size is 2-5mm, accounting for 60%. 40% within 2mm; after that, the material is evenly mixed by a mixer, and melted at a temperature of 2100 ° C, and the formed melt is centrifugally spun to prepare aluminum silicate fibers. In the obtained aluminum silicate fiber, Al 2 o 3 39-42%, Al 2 o 3 +SiO2 2 ≥98%, Fe 2 o 3 <1%.

[0044] The present invention has tested the fiber diameter, tensile strength, thermal conductivity and heating permanent line change of the aluminum silicate fiber in this embodiment respectively, and the results are shown in Table 1, and Table 1 is Examples 1 to 5 of the present invention and Comparative Example 1 The performance parameters of the obtained aluminum silicate fiber.

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Abstract

The invention provides a method for preparing alumina silicate fibers. The method comprises the following steps that raw material clinker of the alumina silicate fibers is sequentially subjected to smashing, fusion and centrifugal thread throwing, and the alumina silicate fibers are obtained; according to the grain size distribution of smashing, the mass percentage of particles with the grain size of 2 mm to 5 mm ranges from 50% to 99%, and the mass percentage of particles with the grain size of 0 to 2 mm ranges from 1% to 50%. The smashing grain size is limited below 5 mm, and through the reasonable grain size ratio, the fusion speed of raw materials can be increased, energy consumption can be reduced, and the defect that the raw material granularity is too small can be overcome. Under the condition of adopting the same raw materials and production conditions, and about 100 kW.h of energy can be saved when per ton of alumina silicate fibers are produced according to the method.

Description

technical field [0001] The invention belongs to the technical field of inorganic materials, and in particular relates to a preparation method of aluminum silicate fibers. Background technique [0002] Aluminum silicate fiber, also known as ceramic fiber, is a new type of lightweight refractory material with light bulk density, high temperature resistance, good thermal stability, low thermal conductivity, small heat capacity, good resistance to mechanical vibration, small thermal expansion, Good heat insulation performance and so on. China started research on the production of aluminum silicate fibers in the 1970s. At present, the raw materials used in the production of aluminum silicate are mainly natural mineral raw materials such as burnt gemstones, coal gangue, kaolinite, bauxite, etc. Before use, the minerals need to be The raw materials are calcined at a certain temperature to burn off moisture, organic matter and other impurities that are easy to burn off, and obtain ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B37/00C03C13/06
CPCC03B37/00C03C13/06
Inventor 孟凡伟赵生祥荆桂花乔文广
Owner LUYANG ENERGY SAVING MATERIALS CO LTD
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