12.04.2016
3406
Pechnik (Moscow)

The full functioning of the fireplace, as a rule, depends not only on what type of heating device you choose for your cozy home, but also on the accuracy of the installation of thermal insulation and correctly selected thermal insulation materials. Among other things, well-executed thermal insulation is considered a reliable guarantee of fire safety, which is why the price of such materials and the procedure for laying them often exceeds the cost of the fireplace itself.

It must be said that this indicator is considered one of the most significant characteristics insulating materials. Moreover, during the heating of the foci thermal insulation material behaves as follows: the lower the thermal conductivity, the greater its ability to interfere with heat transfer. Thus, it is thermal conductivity that is considered one of the most significant criteria for the purchase of thermal insulation materials. The main issues that should be read when selecting and purchasing thermal insulation materials, we will consider today in our article. one.
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When choosing this type of material, it is best to give preference to foreign European manufacturers. Material from abroad is considered to be of higher quality and meets the necessary standards construction industry.

Basalt wool, which is also called "stone", is characterized by a fibrous structure. For the manufacture of the material, basalt, metallurgical slags, as well as their mixtures are used.

An important component of the material is considered to be a binding substance (it can be bitumen, synthetic substances and bentonite clays). Such substances help in bonding cotton wool fibers to each other. Basalt wool is available on the market in the form of slabs ("mats"), rolls ("cylinders") or in bags. In the latter case no binder is used.

The main advantage of the main characteristics basalt wool excellent heat resistance is considered, since the material does not ignite or melt, it is resistant to decay, and has good water-repellent features. If we highlight the minuses of stone wool, it should be said separately that if the temperature reaches six hundred - seven hundred degrees Celsius, then the connecting element in the structure of the wool will collapse, as a result of which the properties of the heat-insulating material itself will change. Among other things, the disadvantages include the high price category of wool, the presence of seams in the installation areas, dusting during the assembly process and a rather large vapor transmission capacity, and this is a limitation on the utility of the material.

Basalt wool is widely used in different areas, but it is mainly used for the construction of buildings, it is the thermal insulation of pipelines, technical devices, floating floors, the passage of chimney systems through ceilings, the thermal insulation of ceilings and walls, the assembly of insulated sandwiches and the production of sandwich panels.

Kaolin wool

Kaolin wool, it is also called ceramic, is considered an alternative to glass wool. Kaolin wool is a heat-insulating type of material that is made from technical alumina. Currently, ceramic wool is produced in the form of rolls, slabs and lump wool. The fibers that make up ceramic wool are connected to each other with all sorts of binders: refractory clay, aluminous cement, silicate glass, and organosilicon substances.

The material is very popular with buyers due to its increased refractoriness, as it can withstand temperatures from one thousand one hundred to one thousand two hundred and fifty degrees Celsius, provided that zirconium or alumina fibers are used for production, their temperature criterion can increase to one thousand four hundred - one thousand six hundred degrees Celsius. In addition to the above indicators, it is worth noting the low thermal conductivity, high sound insulation, water resistance, electrical insulation, and the fiber density is one hundred and thirty kilograms per cubic meter. The material is blown, which already refers to its disadvantages, it is not environmentally friendly.

Kaolin type cotton wool is used in different directions, it can be the production of plates, sealing inserts; reliable insulation of vaults of buildings, ceilings, use as a specialized lining of hearths, for the release of insulated chimneys, insulation of chimneys through wooden floors, and also as a filling heat-insulating material.

Superizol is a lightweight material with a porous structure, characterized by excellent thermal insulation performance. Such high marks can be achieved due to the presence of small pores inside the superisol, which help to withstand temperatures in the range of two hundred to one thousand one hundred degrees Celsius. The substance is made on the basis of calcium silicate.
It should be noted that despite the rather high price category, the material is in demand among Russian buyers. Superizol is distinguished by its lightness, so one sheet of material weighs only eight kilograms, among other things, it is environmentally friendly and dense. At the same time, when buying superisol, you should not forget that it does not absorb moisture well, but some foreign companies already present with increased moisture protection.

Superizol is great for thermal insulation different options foci. But usually it is used to insulate ceilings, conduct chimney systems through the roof of a building, as well as to install fire-prevention cutting of fireplaces, install high-power hearths and manufacture fireplace boxes. decorative pattern. Note that the material is today considered one of the most suitable options for the construction of hearths, which allows it to be used in the most difficult junctions.

Vermiculite slabs are produced using special minerals from the micas group, distinguished by their layered structure, as well as using binders such as bitumen and silicate glass.

Vermiculite boards are distinguished by their environmental friendliness, as they do not contain organic fibers, asbestos in their array, and therefore are characterized increased level heat resistance and thermal insulation, that is, they can withstand temperatures from fifty to one thousand two hundred degrees. The material has long term use, just cut and easy to glue.

To summarize, it is safe to say that the material is well suited for insulation. However, due to the fact that the plates have high density, for the construction of light structures, it is not suitable.

In addition, it should be noted that vermiculite is a fragile substance, therefore, with an inattentive attitude, it breaks and crumbles. Typically, plates are used for refractory lining and thermal insulation of hearths and chimney systems, as well as increasing the fire resistance of load-bearing structures.

Silica wool Supersil stands out in the mass of mineral wool insulation. The characteristics of this heat insulator are quite high, they include the environmental friendliness of the material, which does not emit harmful substances into the atmosphere of the building during heating. Supersil has an increased fire resistance, reaching one thousand two hundred degrees, excellent heat and sound insulation. Cotton wool does not contain carcinogens and fibrous inclusions.

The material for sale is produced in the form of mats and is used to insulate chimneys, wooden walls, fireplace inserts, air ducts, exhaust pipes and heat-insulating boxes.

Minerite slabs are produced on the basis of a special fiber cement substance, a fibrous substance, as well as a lime filler. The material has resistant surface as well as good density. Plates of this type do not absorb moisture, do not rot, are characterized by high rates of sound insulation, strength and thermal insulation. The heat resistance of the substance varies between eighty and one thousand one hundred degrees Celsius. Plates are simply easy to decorate and maintain, do not emit harmful volatile substances when heated.

Material Knauf-superlist (GVL) is produced from a mixture of pressed fibers made from fluff waste paper and gypsum (as a binder). Superlist is distinguished by its low price category, while in combination with superisol / mineral wool, the substance can provide increased thermal insulation and a strong frame for installing fireproof units. Superlist is environmentally friendly clean materials, has good level sound and heat insulation.

Since GVL sheets can be painted, boxes are often made from this material. Among other things, Knauf-superlist is used for sheathing frame devices, as fire protection installations, partitions, thermal insulation of wooden floors and walls in the fireplace area.

Other thermal insulation materials

Let's note some more materials that are used for thermal insulation.

Other thermal insulation materials

• characterized by excellent thermal insulation solid bricks which also prevent fire. Usually a material of this type is used where the temperature mark does not reach the firing mark;
• reduce heat transfer between the atmosphere and inner space hearth hollow bricks. A similar phenomenon is carried out due to specially formed during the construction of heating devices for internal air voids;
• cement-sand bricks are distinguished by high thermal inertia, which allow organizing stable thermal protection;
• high properties thermal insulation at temperatures reaching nine hundred degrees Celsius can provide diatomite foam bricks.

It is important to know that when choosing a heat-insulating material, it is necessary, first of all, to determine the goal pursued in advance. If you want to increase the productivity of the hearth, it is more advisable to use the bricks that we have listed. Provided that as a result of the work, the fire safety of the entire heating system, you need to give preference in the direction of mineral wool heaters, as well as superisol and similar materials.

Video

Kaolin wool with a density of 128 kg/m3 and 96 kg/m3 is a special wool made from kaolin. It is used in various industries as a heat-insulating material. Kaolin wool is produced on the basis of alumina and quartz sand. Kaolin wool is resistant to fire, it is able to withstand temperatures from 1100 to 1250 ° C, to water and steam, to temperature extremes, to chemical attack or liquid metals. Chemical composition:

Al2O3, within 42-46%

SiO2, within 54-58%

Rolled cotton in a box has the following technical data:

Kaolin wool brand MKRR-130, MKRV-200

Refractory heat-insulating glass fiber mullite-silica materials are designed for thermal insulation of vaults and walls of various types of furnaces, filling temperature and expansion joints of furnaces, gas burners and furnace trolleys, thermal insulation of heating furnaces, covers of steel-pouring ladles, covers of heating wells and other objects with a temperature of use not higher than 1150 0С.

Chemical composition:

Mass fraction of Al2O3 not less than 50-51%

Rolled cotton wool in a film has the following technical data:

Name	Max working temperature, °C	Size (LxWxT), mm	Density, kg/m.cub.		Price per package, rub.
Kaolin wool MKRR-130		5000-15000x600-1400x20
Kaolin wool MKRV-200		5000-15000x600-1400x20

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Kaolin wool is a modern high-tech refractory material. Produced from oxides of silicon and aluminum as a result of melting in special electric ovens, resulting in the formation of cotton wool.

Properties

This material has pronounced insulating properties. Such fiber is successfully used in various fields due to its high refractory properties. It is also widely used for gas filtration at relatively high temperatures. Given its good refractoriness, kaolin wool is well suited as a base material.

The fibers of this cotton wool show high resistance to the effects of various chemical substances such as alkalis and acids. It has good electrical insulating properties. Also given material It has high plasticity, therefore it can be used in any structures, regardless of type and shape. All these properties of kaolin wool allow it to be used for a wide variety of purposes.

Specifications

Consider specifications kaolin wool brand MKRR-130:

The use of kaolin wool

The scope of the material is extremely wide. Kaolin wool can be used as lining of furnaces. Also, as a heat-insulating material, it is widely used in the insulation of smokers, gas ducts, turbogenerators. She received application in everyday life. On the this moment in many regions, kaolin wool is used as an insulating material for insulating walls, windows, and doors. Good noise isolation of the material also contributes to this. Thanks to special properties kaolin wool is used to produce paper, various blocks, plates, specialized filters, it is used in areas where it is necessary to ensure good resistance to high temperatures. You can see a photo of the material itself on this page.

Advantages

Everyone has it building material there are both advantages and disadvantages. Kaolin wool is no exception, having a number of important advantages compared to analogues:

• Low thermal conductivity. Due to this feature, the material can be used in various areas of economic and household activities and purposes, where it is necessary to ensure reliable thermal insulation structure or material.
• Low weight. Due to the porous structure, it has a relatively low weight, which allows the material to be used at any height, surface and in the most different conditions. Also, thanks to this, the installation of such systems is quite quick and easy.
• Efficiency. Thanks to the use of highly efficient energy-saving technologies, it is possible to significantly increase the savings in heat consumption and energy resources. This entails budget cuts and cost savings.
• Sustainability. One of the advantages of the material is its high resistance to irritants such as high and low temperatures, exposure to steam and water, gases and acidic substances and environments. This makes kaolin wool very practical and allows it to be used in industries where other materials will not last long.

For a long time there have been disputes about the harmfulness of kaolin wool to human health. It is generally accepted that any synthetic fibers have a negative effect on a living organism, but this has not been finally proven. Discussions are still ongoing. In addition, other materials are also mostly artificial, so the impact is similar.

In general, kaolin wool surpasses most similar materials in its technical characteristics and therefore received a lot of positive feedback.

LLC "TD PromStroyKomplekt" supplies kaolin wool MKRR to Moscow, Izhevsk, Nizhny Novgorod, Yekaterinburg and other regions of the country. To calculate the price of a batch of this material with delivery, leave an online application or contact our employees by phone numbers listed in the "Contacts" section.

Cotton wool production MKRR

Raw materials for the manufacture of kaolin wool are oxides of chromium, silicon and aluminum. Their connection is carried out in special furnaces. The mass obtained during melting and blowing is converted into a light, thin and plastic fiber, from which mats and other shapes are then made. By their own performance characteristics the resulting product must comply with the requirements of GOST 23619-79.

Cost calculation

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Main properties and characteristics of refractory kaolin wool

Domestic manufacturers produce the following grades of material:

• MKRR-130;
• MKRV-200;
• ICRR-150.

They are characterized by the following physical and chemical parameters (according to GOST 23619-79):

• density about 130 kg per m 3;
• small specific gravity;
• thermal conductivity over 0.15 W/mK;
• application temperature not more than 1150 °C.

Mullite-silica wool grades MKRRH-150 (chromium) and MKRR-130 are inert to steam, water, non-ferrous metal melts and oils, resistant to acidic and alkaline media. It is characterized by a low level of heat capacity and high resistance to temperature changes.

Rolled mullite-silica material is easy to pack and transport by various modes of transport. Due to its low weight, it is easy to install. Cotton wool grades MKRV have high strength and tear resistance.

We will carefully deliver "Refractory mullite-silica wool"
to your city

Cost calculation

AS WELL AS:

Spheres of application of cotton wool MKRR, MKRV, MKRKh-150

The main scope of mullite-silica roll material grades MKRR-130, MKRRH-150 and MKRV-20 is the creation of insulation for various heating objects. Most often, mats are used to protect industrial equipment from the high temperatures that occur during technological processes, as well as to reduce the risk of fires and increase the efficiency of furnaces.

In addition, mats MKRR-130 use:

• to perform works on thermal insulation of furnace roofs and other technological facilities operating at high and ultra-high temperatures;
• for lining gutters and pipelines used for transporting melts;
• for thermal insulation of heat generators, gas ducts and chimneys;
• for filling joints and expansion gaps in structures operating in high-temperature conditions;
• for sealing burners, dampers, doors.

Kaolin refractory wool MKRR-130 is an excellent raw material for the manufacture of plates, blocks, shells and inserts various shapes. It is necessary for manufacturers of catalyst carriers, automobile brake pads, high-temperature filters, and other components and parts used in the creation of machines and equipment for various industries.

Our company offers kaolin wool MKRR-130 and other refractory materials. You can get acquainted with the prices (in rubles / m 3) in the price list on the website.

Today on Russian market presented in large numbers. However, not all of them are the same and are able to withstand harsh climatic conditions and reliably protect buildings and communications from heat loss. Statistical data from studies of the Russian construction complex have shown that the main type of insulation used in Russia is mineral wool products, which include mineral, kaolin, quartz, graphite wool. All of them have increased temperature resistance, their market share is slightly more than 65%, the remaining 35% is different kinds polystyrene which are significantly inferior to mineral wool.

mineral wool

Mineral wool is a heat-insulating material consisting of the finest vitreous fibers obtained by spraying a liquid melt of charge from metallurgical slags, rocks or other silicate materials. Depending on the outgoing raw materials, mineral wool is divided into: stone wool, which is made from mineral rocks (sedimentary rocks: clays, limestones, dolomites, marls and overthrown: granites, sinites, pegmatites, pumice) and slag wool made from metallurgical slags - blast-furnace, cupola and open-hearth slags, as well as non-ferrous metallurgy slags.

The thermal insulation properties of mineral wool are determined by the air pores enclosed between the fibers. Mineral wool produced by blowing and centrifugal methods. The blast methods are based on the use of the kinetic energy of steam, compressed air or gas exiting the nozzle and encountering a jet of silicate melt in its path, as a result of which the latter is broken into drops, which are first drawn into a cylinder, which then narrows and forms two pear-shaped bodies connected by a thread. Pear-shaped bodies decrease and turn into fibers. The centrifugal method is based on the use of the centrifugal force of a rotating disk onto which a stream of silicate melt falls.
There is also the most "fancy" method of obtaining mineral wool - centrifugal spunbond-blowing. It ensures the complete absence of non-fibrous inclusions (the so-called "kings"), as well as a small diameter of cotton wool fibers. Properties of mineral wool: with an increase in the silica content in mineral wool, its softening temperature and temperature resistance increase. Alumina increases the chemical and biological resistance of wool, iron oxide reduces temperature resistance, increases the corrosiveness of wool. The thermal conductivity coefficient depends on the average fiber thickness, bulk density and porosity. Optimum is a porosity of 90%. The fiber thickness can vary from 2 to 40 microns.

glass wool

glass wool is a thermal insulation material consisting of randomly arranged flexible glass fibers obtained by drawing from molten glass. Raw material for receiving glass wool serves as glass or glass industry waste.

Manufactured glass wool in two ways - blowing and the method of continuous stretching (spunbond-blowing). Technological process for the production of glass fiber by the blowing method is similar to the blowing method for producing mineral wool. Glass fiber has a thickness of 4 to 30 microns, fiber length 120-200 mm. The continuous pull method looks like this. The glass charge is loaded into the bath furnace (t=1500C), under the influence of temperature it melts over the surface and flows down thin layer into the homogenization zone, where it becomes more homogeneous.
The melt flows out through a special plate, which has holes (dies) with a diameter of 0.1 mm. A thread is drawn from the flowing stream of melt by means of a rapidly rotating drum. The continuous drawing method produces a fiber with no "blobs", uniform thickness and High Quality. The strength of fiberglass depends on its thickness. The thicker the fiber, the more fragile it is. The brittleness of the fiber causes it to break rapidly when vibrated. That is optimum thickness fiber should be 15 microns or less.

More advanced fiberglass production technologies make it possible to obtain an average thickness of 6 microns (that is, the fiber practically does not irritate skin and mucous membranes of the respiratory tract). The technological process of obtaining ISOVER glass wool consists of the following steps. Raw materials (recycled glass, sand, soda, limestone) are melted in a furnace (t=1400C and above); after which the molten mass flows into the fiber former, which is a spinning centrifuge, where the glass is broken into fibers.

The fibers of glass wool are connected to each other by means of binder(it is aerosolized and mixed with fiberglass during the fiberization process). Products impregnated with resin fall on heat treatment(t=250C), which gives the finished insulating material the required rigidity. The coefficient of thermal conductivity of fiberglass varies (0.029-0.040 W / mK), temperature resistance + 450C, frost resistance (hundred-fold freezing and thawing) -25C. Glass wool is resistant to acid and in terms of temperature resistance and thermal conductivity, glass wool differs from mineral wool, which has a lower average density and lower temperature resistance. Used for thermal insulation building structures, as well as in technical insulation (pipelines, industrial equipment), as well as refrigerators and vehicles.

Kaolin wool

Kaolin wool and products based on it are refractory (high-temperature insulation, application temperature t= 1100-1250C). The raw materials for its production are technical alumina, containing 99% aluminum oxide, and pure quartz sand. The melt is produced in a five-electrode ore-thermal furnace (melting point 1750°C). The working space of the furnace consists of melting and working zones. The melting zone is equipped with three graphite electrodes, the production zone - with two. The melt jet is inflated with steam at a pressure of 0.6-0.8 MPa using an ejection nozzle.

Used as binders liquid glass, aluminous cement, refractory clays, organosilicon binder. Average density kaolin wool 80 kg/m3. It is resistant to vibration, inert to water, water vapor, oils and acids, has high electrical insulating properties, which practically do not change with an increase in temperature up to 700-800C, and is not wetted by liquid metals. Kaolin wool is produced in rolls and in the form of products of various shapes (plates, shells, segments, etc.). Kaolin wool is made in the form of lumpy wool and various products. Scope - various industries.

Now it is difficult to find a house that does without heaters. At the same time, all mineral wool insulation in some cases resists fire well, plays the role of a good sound insulator. Our masters at warming country houses use only quality materials for insulation of walls, floors and ceilings. We use the best European mineral wool ROCKWOOL heaters, URSA, ISOVER.