Industrial Polycrystalline Mullite Fiber Blanket

Product Introduction

Industrial polycrystalline mullite fiber blanket is a high-performance refractory fiber product in the form of mullite crystals. The main raw material is produced through a chemical "colloidal process" to create a high-purity mother liquor, which is then fiberized by blowing or spinning to produce embryonic wool. This fiber undergoes multiple sophisticated processes, including high-temperature sintering. Industrial polycrystalline mullite fiber blanket exhibits excellent high-temperature resistance, thermal stability, and chemical stability, allowing for long-term use at temperatures of 1250°C to 1500°C, while maintaining excellent structural strength and thermal insulation properties even under high-temperature conditions. This product is widely used in the thermal insulation and energy-saving applications of high-temperature equipment in industries such as metallurgy, petrochemicals, power generation, ceramics, and glass. It is an environmentally friendly, lightweight, and highly efficient refractory and thermal insulation material.

 

Product Features

01 Extremely high temperature resistance

02 Highly effective thermal insulation

03 Lightweight and flexible

04 Excellent thermal shock resistance

05 High chemical stability

06 Low heat capacity

07 Environmentally friendly and safe

 

Product Application

01. Insulation of inner lining or wall lining of kilns, heating devices, pipes, etc.

02. Insulation and sealing of furnace doors, furnace covers, furnace roofs, etc.

03. Insulation and fire protection of fiber chemical industry, power industry, and high-rise buildings

 

Product Parameter

 

Chemical composition(%)	Al2O3 71-75
	SIO2 26-29
Fiber diameter(μm)	3-6
Resilience(%)	≥ 80
Tensile strength(kPa)	≥120
Slag ball content(%,≥45μm)	≤5
Linear shrinkage (%,24h,12.5mm,128kg/m2 Reference value)	1300C	0.08
	1400C	0.50
	1500C	0.70
	1600C	1.20
Thermal conductivity (W/m ·K,12.5mm,128kg/m2 Reference value)	600C	0.12
	1000C	0.25
	1200C	0.34
	1400C	0.45
	1500C	0.52
Density deviation(kg/m3)	±10
Dimensional deviation(mm)	Thickness	±2
	Width	0～5
	Length	0～50

 

Polycrystalline Mullite High-temperature Fiber Installation Standards

 

Polycrystalline mullite high-temperature fiber is a new refractory material with a wide range of applications. However, polycrystalline mullite fiber is relatively lightweight and requires more complex installation procedures.

 

For batch furnaces operating at temperatures up to 1250°C (1250°F), if the furnace body is a brickwork structure, the surface to which the polycrystalline mullite fiber is applied must be cleaned and decontaminated before applying. Dust and dirt must not be allowed.

 

For batch furnaces operating at temperatures up to 1250°C (1250°F), if the furnace body is an all-fiber structure, the surface to which the polycrystalline mullite fiber is applied must be smoothed with a tool before applying. Fiber fragments and broken fibers must not be present. For industrial furnaces operating between 1250°C and 1380°C, if the furnace body is cast and rammed integrally, the furnace body surface must be roughened after the formwork is removed. V-shaped grooves, 3-5mm wide and 3-5mm deep, should be created in both the vertical and horizontal directions at intervals of 80-150mm. The surface should then be cleaned with compressed air before applying the polycrystalline mullite fiber.

 

For industrial furnaces operating between 1250°C and 1380°C, if the furnace body is brick-lined, the surface must be roughened to create 300-400 rough spots per square meter before applying the fiber. Finally, the treated surface must be cleaned with compressed air before applying the polycrystalline mullite fiber.

 

In addition to all-fiber linings, the burner bricks must also have a raised platform structure. Otherwise, a 100mm area around the burner brick opening will be left unused during fiber application. Before the fiber is pasted on various industrial furnaces, the average temperature inside the furnace must be between 10 and 40 degrees Celsius, otherwise construction is not allowed.

 

 

 Product Certificate

Customer visits

 

Packaging Display

 

 

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FAQ

Q1: Can I get samples? / Are you willing to provide free samples to us?

A1: Of course, SUNTHERM provides free samples, and the shipping cost can be negotiated by both parties. / Of course, we will send free samples for your reference.

Q2: Can I use our own logo or design to make stickers? / Can I request customized shipping marks?

A2: Yes, SUNTHERM has a professional designer team and can design according to your requirements. / Yes, we accept customized shipping marks.

Q3: Are your prices flexible?

A3: Certainly, our pricing is based on order quantity. We're happy to discuss volume discounts for larger purchases.

 

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