Specifications and properties of kaolin wool

Specifications and properties of kaolin wool Kaolin wool - application, characteristics

Kaolin wool is made of mullite-silica fibers and can be attributed to categories of thermal insulation material. It has excellent fire resistance and is also used to fill empty spaces in masonry and seal holes and crevices.

Material is generally sold in rolls. It is made in the process of melting silicon and aluminum oxides under the influence of high temperature in a special furnace. This type of wool has been actively used for thermal insulation of a building for many years and surpasses most other materials in its characteristics.

despite the modern variety of other products with similar properties, it will become more and more popular and found its use in the industrial field.

It will act as insulation in warm-type devices, combustion chambers, turbines and heat exchangers. The largest distribution is noted in metallurgy. Another kaolin material is used for the manufacture of plates and other molded elements.

General information

By the way, the material can have a high level of thermal and sound insulation, resistance to vibration loads, as well as deformation.

In addition, cotton wool will have different properties that will not be typical for most materials with a similar purpose. Another means of an insulating type is not exposed to high temperatures in an oxidizing, and even in a neutral environment, and the level of stability can also be increased due to the use of chromium oxides. Despite this, the main property, which is heat retention, is significantly reduced in a reducing environment.


This type of cotton wool as MKRR-130 is ideal for the manufacture of brake pads, insulation of furnace arches and wall structures. Its lightest weight will reduce the amount of time and effort required for installation work, and will also reduce the cost of fuels and lubricants.

Other positive aspects should also be noted:

  • Specifications and properties of kaolin wool Thoroughly cleaned fibers will have a high level of resistance to devitrification.
  • Lowest level of heat accumulation.
  • Resistant to thermal shock.
  • Preservation of the original characteristics with repeated use.
  • High degree of noise isolation.

  • Not exposed to aggressive chemical substances, molten metals and alkalis.
  • Inert to mineral oils, water and steam.
  • The electrical insulation performance will remain the same even when exposed to high temperatures.

Next, let's talk about properties.


Refractory wool is made from alumina, the base of which will be quartz sand.

In a special ore-thermal furnace, melting is performed at a temperature level within +1810 degrees.There are 3 electrodes at the melting point, while there are only two of them at the place of production. The inflation technique is used to melt the material, and it is also based on the effect of special steam, if the pressure is about 0.7 MPa. The ejection nozzle can provide a general inflation process.

Liquid glass, cement or clay can act as a binder.

This kind of cotton wool will be realized in the form of rolls with a length of up to 10 meters, and the width and thickness are 0.02 cm and 0.6 meters, respectively. It will differ in elasticity, due to which a snug fit to all types of construction is ensured.

Manufacturing companies today are trying to improve the material by adding additional components, such as yttrium oxide. This will improve fiber stability and expand the range of applications.


Materials that are resistant to fire

The characteristics of kaolin wool are as follows , that they are made from a mineral base, and they are also distinguished by their resistance to high temperatures, and at the same time their characteristics remain the same. They will be indispensable in the metallurgical industry for performing distillation, evaporation and other processes, creating high-temperature type mechanisms (reactors and motors) and parts for them.

Specifications and properties of kaolin wool After use, the refractories are sent for processing.

Most often, products of this type are rectangular in shape and small in weight, due to which they will be optimally suited for various lining. At the moment, there is a decrease in the production of conventional refractories, as more and more attention is paid to the production of special mortars and concretes that are resistant to high temperatures.

Methods of making fire-resistant materials

Materials have a ceramic base, and they are made from refractory nitrides, borides and oxides and have a high level of chemical inertness, as well as strength. A carbon compound is also often used. Refractories retain their qualities when exposed to temperatures from +1650 degrees and are used in a large number of areas where it becomes necessary to carry out some actions under specified conditions.

According to the method of forming the product, everything should be divided into several types:

  • Sawed from rocks or processed blocks.
  • Cast on the basis of liquid foam slip.
  • Plastic formation.
  • Cast that are smelted from the melt.
  • Hot pressed.

As you can see, this is an excellent material for renovation work.

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