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Production method of 1500 DEG C chromium-free alumina silicate fiber carpet

A production method, a technology of aluminum chromosilicate, applied in the directions of heating/cooling fabrics, textiles and papermaking, fabric surface trimming, etc., to achieve the effects of easy and fast installation, small shrinkage, safe waste and no pollution

Active Publication Date: 2015-06-17
SUZHOU ISOLITE EASTERN UNION CERAMIC FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the overhaul of the kiln needs to replace the insulation layer, and the disposal of the replaced chromium-containing waste is also a troublesome problem faced by customers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The parameters are as follows:

[0020] Raw material mix: 35% alumina, 50% silica, 15% zirconia

[0021] Resistance furnace melting: 2600°C;

[0022] Injection fiber: fiber lubricant flow rate 100-150L / hour, injection pressure 5kg / cm 2 , wind speed flow 500m 3 / h；

[0023] Needle piercing: 128 needles per row, 8 rows of needles for double-sided needle piercing;

[0024] Heat treatment crystal transformation: temperature 1100°C, time 10 minutes

[0025] Measured product performance: The shrinkage rate of the final product after heating at 1500°C for 24 hours is 1.83%, and the crystal phase ratio is 22%.

Embodiment 2

[0026] Embodiment 2: The parameters are as follows:

[0027] Raw material mix: 32% alumina, 50% silica, 18% zirconia

[0028] Resistance furnace melting: 2600°C;

[0029] Injection fiber: fiber lubricant flow rate 100-150L / hour, injection pressure 5kg / cm 2 , wind speed flow 500m 3 / h；

[0030] Needle piercing: 128 needles per row, 8 rows of needles for double-sided needle piercing;

[0031] Heat treatment crystal transformation: temperature 1200°C, time 12 minutes

[0032] Measured product performance: The shrinkage rate of the final product after heating at 1500°C for 24 hours is 1.71%, and the proportion of the crystalline phase is 21%.

Embodiment 3

[0033] Embodiment three: the parameters are as follows:

[0034] Raw material mix: 37% alumina, 50% silica, 13% zirconia

[0035] Resistance furnace melting: 2600°C;

[0036] Injection fiber: fiber lubricant flow rate 100-150L / hour, injection pressure 5kg / cm 2 , wind speed flow 500m 3 / h；

[0037] Needle piercing: 128 needles per row, 8 rows of needles for double-sided needle piercing;

[0038] Heat treatment crystal transformation: temperature 1050°C, time 10 minutes

[0039] Measured product performance: The shrinkage rate of the final product after heating at 1500°C for 24 hours is 2.03%, and the proportion of the crystal phase is 22.5%.

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Abstract

The invention discloses a production method of a 1500 DEG C chromium-free alumina silicate fiber carpet. Compared with the conventional products, products produced by the production method are cleaner and more environment-friendly and have no side effects after being used, and wastes are safe and unpolluted and are unlikely to cause negative influence to products of the consumer; in addition, the shrinkage rate is reduced to a certain extent with respect to that of the original chromium-containing ceramic fiber carpet, and the strength is enhanced slightly.

Description

technical field [0001] The invention relates to the field of refractory fiber blanket production, in particular to a production method of a chromium-free aluminum silicate fiber blanket at a temperature of 1500°C. Background technique [0002] At present, in kilns with a long-term use temperature of 1400-1500 °C, the use of traditional 1400 °C zirconium-containing fiber blankets can no longer meet the temperature requirements of customers, and 1600 °C polycrystalline mullite fiber blankets cannot be produced in China. The reason why only a few foreign companies have mastered the production technology has caused the price of this fiber cotton blanket to remain high, which is about ten times that of the 1400 ℃ ceramic fiber blanket, and the cost is very high. Chromium-containing ceramic fiber blanket is a low-cost ceramic fiber blanket that can reach 1500°C for long-term use, and it is a product that officially meets the above needs. [0003] However, in order to improve the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/4209D04H1/46D06C7/00
Inventor 严继军陶治平
Owner SUZHOU ISOLITE EASTERN UNION CERAMIC FIBER