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Soluble fiber, soluble fiber board and preparation method thereof

A fiberboard and fiber technology, which is applied in the field of soluble fiber, soluble fiberboard and its preparation, can solve problems such as poor mechanical properties and limited application, and achieve excellent high-temperature mechanical properties, solving limited use, and good compressive strength.

Active Publication Date: 2018-05-04
LUYANG ENERGY SAVING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the actual use temperature of the above-mentioned soluble fiber cannot exceed 1000°C. Therefore, the use temperature of the soluble fiber board prepared with this kind of soluble fiber as the main material can only be below 1000°C, and the mechanical properties are poor in high-temperature environments. Limits its application in high temperature environment

Method used

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  • Soluble fiber, soluble fiber board and preparation method thereof
  • Soluble fiber, soluble fiber board and preparation method thereof
  • Soluble fiber, soluble fiber board and preparation method thereof

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preparation example Construction

[0039] The present invention has no special limitation on the preparation method of the above-mentioned soluble fiber, and the preparation method of the soluble fiber well-known to those skilled in the art can be adopted. In the present invention, the soluble fiber is preferably prepared according to the following method:

[0040] SiO 2 , CaO, K 2 O.B 2 o 3 、Al 2 o 3 , Fe 2 o 3 and Na 2 O mixing, co-melting and spinning or blowing into fibers to obtain soluble fibers.

[0041] The SiO 2 , CaO, K 2 O.B 2 o 3 、Al 2 o 3 , Fe 2 o 3 and Na 2 The proportioning ratio of O is the same as above, and will not be repeated here.

[0042] The eutectic temperature is preferably 1750-1900°C; in some embodiments of the present invention, the eutectic temperature is 1800°C, 1850°C or 1900°C. The eutectic pressure is preferably 0.101-0.102 MPa, and in some embodiments of the present invention, the eutectic pressure is 0.101 or 0.102 MPa. The eutectic time is preferably 120-3...

Embodiment 1

[0070] 69.28wt% SiO 2 , 27.19wt% CaO, 1.5wt% K 2 O, 0.1 wt% B 2 o 3 , 1.5wt% Al 2 o 3 , 0.13wt% Fe 2 o 3 and 0.3 wt% Na 2 O mixing, at 1800°C, 0.101MPa, co-melting for 180min, then naturally cooling to 1550°C, spinning into fibers to obtain soluble fibers.

[0071] Put 100 parts by weight of the above-mentioned soluble fibers into a hydropulper pre-injected with water, turn on the beater, beat for 30 minutes, and cut the length of the soluble fibers to 3-5 mm;

[0072] Pump the crushed soluble fiber slurry into the stock tank, add water, dilute the crushed soluble fiber slurry to a concentration of 1.0wt% to 2.0wt%, and then remove the slag by screw The slag removal device is used to obtain the soluble fiber slurry after the slag removal;

[0073] The soluble fiber slurry obtained through the above-mentioned treatment is stirred and mixed with the organic binder of 7 parts by weight and the inorganic binder of 10 parts by weight for 20 minutes; the organic binder is t...

Embodiment 2

[0076] 71.2wt% SiO 2 , 24.27wt% CaO, 2.2wt% K 2 O, 0.15 wt% B 2 o 3 , 1.76wt% Al 2 o 3 , 0.14wt% Fe 2 o 3 and 0.28 wt% Na 2 O mixing, at 1850°C, 0.102MPa, co-melting for 240min, then naturally cooling to 1650°C, spinning into fibers to obtain soluble fibers.

[0077] Put 100 parts by weight of the above-mentioned soluble fibers into a hydropulper pre-injected with water, turn on the beater, beat for 30 minutes, and cut the length of the soluble fibers to 3-5 mm;

[0078] Pump the crushed soluble fiber slurry into the stock tank, add water, dilute the crushed soluble fiber slurry to a concentration of 1.0wt% to 2.0wt%, and then remove the slag by screw The slag removal device is used to obtain the soluble fiber slurry after the slag removal;

[0079] The soluble fiber slurry obtained through the above-mentioned treatment is stirred and mixed with the organic binder of 7 parts by weight and the inorganic binder of 10 parts by weight for 20 minutes; the organic binder is...

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Abstract

The invention provides a soluble fiber, which mostly adopts K2O with a lower melting point. When the K2O with the lower melting point is co-melted with other components according to a certain matchingratio, the use temperature of the prepared soluble fiber is effectively improved. Compared with the prior art, MgO with a higher melting point is omitted, so that the obtained soluble fiber has a remarkably higher eutectic point temperature, the remarkably higher use temperature is obtained, and the problem that the soluble fiber is limited in use in a high-temperature environment is solved. Meanwhile, the soluble fiber provided by the invention has a better mechanical property at high temperature, while a dissolving property of the soluble fiber is not affected. The obtained soluble fiber isapplied to a soluble fiber board, so that the prepared soluble fiber board has the higher use temperature and the better mechanical property at high temperature, while a dissolving property of the soluble fiber board is not affected at the same time.

Description

technical field [0001] The invention relates to the technical field of fire-resistant and heat-insulating materials, in particular to a soluble fiber, a soluble fiber board and a preparation method thereof. Background technique [0002] The main chemical composition of ceramic fiberboard is Al 2 o 3 and SiO 2 , Due to the different types of ceramic fibers, the service temperature of ceramic fiberboards shows a large difference. The higher service temperature can reach 800°C to 1350°C, which meets most industrial applications. Although ceramic fiber boards are used at a higher temperature, because ceramic fiber dust is difficult to dissolve after being inhaled by the human body, some international organizations and institutions such as: International Cancer Research Center (IARC for short) have classified ceramic fibers into category 2B (possible carcinogens) . Their basis is: the pH value of normal human body fluid is 7.35-7.45 (neutral and slightly alkaline), and Al 2 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/14C04B35/622C04B35/66
CPCC04B35/14C04B35/6224C04B35/66C04B2235/3201C04B2235/3208C04B2235/3217C04B2235/3272C04B2235/3409
Inventor 刘超葛振鹏岳耀辉张成贺刘焕英
Owner LUYANG ENERGY SAVING MATERIALS CO LTD
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