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Fluorophlogopite for flexible mineral insulated cable and preparation method of fluorophlogopite

A mineral insulated cable, fluorophlogopite technology, applied in chemical instruments and methods, silicon compounds, non-metallic elements, etc., can solve the problems affecting the yield and performance of fluorophlogopite, low heat and mass transfer efficiency, and uneven electrode heating. and other problems to achieve the effect of improving heat and mass transfer efficiency, improving fluidity and reducing impurity content

Active Publication Date: 2021-04-09
重庆科宝电缆股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The internal heat method has the advantages of less energy consumption and less volatilization of fluoride, but due to uneven heating of the electrodes, the fluidity of the molten melt is poor, the melting temperature is high, the heat and mass transfer efficiency is low, the material is heated unevenly, and local high temperature is easy to cause Volatilization loss of raw materials, thus affecting the yield and performance of fluorophlogopite

Method used

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  • Fluorophlogopite for flexible mineral insulated cable and preparation method of fluorophlogopite
  • Fluorophlogopite for flexible mineral insulated cable and preparation method of fluorophlogopite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A fluorophlogopite for flexible mineral insulated cables, prepared from the following raw materials in parts by weight: 48 parts of calcined talc, 8 parts of heavy magnesium oxide, 15 parts of potassium fluorosilicate, 8 parts of aluminum oxide powder, and fluoroboric acid 1 part of potassium, 3 parts of potassium tetrafluoroaluminate and 2 parts of potassium carbonate. The contents of heavy magnesia, calcined talc, potassium fluorosilicate, aluminum oxide powder, potassium fluoroborate, potassium tetrafluoroaluminate and potassium carbonate are all greater than 98%.

[0019] Prepare as follows:

[0020] (1) Mix the heavy magnesia, calcined talc, potassium fluorosilicate, aluminum oxide powder, potassium fluoroborate, potassium tetrafluoroaluminate and potassium carbonate in a stirrer to fully mix;

[0021] (2) An oval furnace body is built with refractory bricks, and graphite electrodes are installed in the furnace body for heating. The shape of the furnace body and t...

Embodiment 2

[0024] A fluorophlogopite for flexible mineral insulated cables, prepared from the following raw materials in parts by weight: 62 parts of calcined talc, 12 parts of heavy magnesium oxide, 25 parts of potassium fluorosilicate, 16 parts of alumina powder, and fluoroboric acid 5 parts of potassium, 8 parts of potassium tetrafluoroaluminate and 6 parts of potassium carbonate. The contents of heavy magnesia, calcined talc, potassium fluorosilicate, aluminum oxide powder, potassium fluoroborate, potassium tetrafluoroaluminate and potassium carbonate are all greater than 98%.

[0025] Prepare as follows:

[0026] (1) Mix the heavy magnesia, calcined talc, potassium fluorosilicate, aluminum oxide powder, potassium fluoroborate, potassium tetrafluoroaluminate and potassium carbonate in a stirrer to fully mix;

[0027] (2) An oval furnace body is built with refractory bricks, and graphite electrodes are installed in the furnace body for heating. The shape of the furnace body and the h...

Embodiment 3

[0030] A fluorophlogopite for flexible mineral insulated cables, prepared from the following raw materials in parts by weight: 52 parts of calcined talc, 10 parts of heavy magnesium oxide, 18 parts of potassium fluorosilicate, 10 parts of alumina powder, and fluoroboric acid 2 parts of potassium, 4 parts of potassium tetrafluoroaluminate and 3 parts of potassium carbonate. The contents of heavy magnesia, calcined talc, potassium fluorosilicate, aluminum oxide powder, potassium fluoroborate, potassium tetrafluoroaluminate and potassium carbonate are all greater than 98%.

[0031] Prepare as follows:

[0032] (1) Mix the heavy magnesia, calcined talc, potassium fluorosilicate, aluminum oxide powder, potassium fluoroborate, potassium tetrafluoroaluminate and potassium carbonate in a stirrer to fully mix;

[0033] (2) An oval furnace body is built with refractory bricks, and graphite electrodes are installed in the furnace body for heating. The shape of the furnace body and the h...

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Abstract

The invention discloses fluorophlogopite for a flexible mineral insulated cable. The fluorophlogopite is prepared from the following raw materials: heavy magnesium oxide, calcined talc, potassium fluosilicate, alumina powder, potassium fluoborate, potassium tetrafluoroaluminate and potassium carbonate. The preparation method of fluorophlogopite for a flexible mineral insulated cable is characterized by comprising the following steps: (1) mixing heavy magnesium oxide, calcined talc, potassium fluosilicate, alumina powder, potassium fluoborate, potassium tetrafluoroaluminate and potassium carbonate in a stirrer, and fully and uniformly mixing all the components; (2) building an oval furnace body by using the refractory bricks, installing the graphite electrodes in the furnace body for heating, wherein the appearance and a hearth of the furnace body are oval along with the arrangement of the electrodes; and (3) putting the uniformly mixed material in the step (1) into the furnace body, calcining and melting by electric heating, preserving heat, cooling, cooling and crystallizing to obtain fluorophlogopite. The fluorophlogopite is very good in light transmittance, low in water absorption, high in melting point and free of carbonization residues.

Description

technical field [0001] The invention relates to fluorphlogopite for flexible mineral insulated cables and a preparation method thereof, belonging to the field of insulating materials. Background technique [0002] The flexible mineral insulated cable has many excellent characteristics and has been generally recognized in practical applications. It meets the international general cable safety use standard and has a long continuous length. Up to 1000mm 2 , multi-core cable section up to 240mm 2 , can be reeled on the cable reel, its bending radius ≤ 20D, the insulation is made of inorganic materials, no harmful gas will be produced during combustion, and no secondary pollution will occur. It can be called an environmentally friendly green product. The cable not only has a large carrying capacity, but also And it has a large overload capacity. [0003] Fluorphlogopite (KMg 3 (AlSi 3 o 10 )F 2 ) with fluoride ions instead of hydroxyl groups, it is easiest to form large cr...

Claims

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Application Information

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IPC IPC(8): C01B33/42
CPCC01B33/42C01P2006/10C01P2006/40C01P2006/34
Inventor 符靓黄美华夏世全陈先华谢华林李建波
Owner 重庆科宝电缆股份有限公司