Insulating Brick

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No.92 Jianshe West Road, Zhongyuan District, Zhengzhou, Henan,China.
albert@literefractory.com
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Why Choose Us

Henan Lite Refractory Material Co., Ltd. pays great attention to the combination and perfection of industrial chain and technology. We have a production base covering an area of 20,000 square meters, which ensures perfect quality and superior performance of all products. With a professional construction team of more than 100 people, we are capable of providing our customers with safe, efficient and environmentally friendly total solutions.

Wide Range of Applications
Refractory and Insulation Materials for Industry use are widely used in the following industry, such as Iron & steel making industry, Non-ferrous Metal industry, Building materials industry, Energy & Incineration.

Quality Assurance
We meet the highest quality requirements of ISO 9001, CE, SGS guidelines and our strict quality control system.

Products Sell Well
Our company pays more attention to the construction of service platform, and our business network has covered all provinces and cities in China. Products and services have also been extended to Indonesia, Pakistan, Turkey, Vietnam, Malaysia and Kazakhstan.

Advanced Equipment
We have a fully automatic batching system, fully automatic CNC screw press, 118m fully automatic high temperature tunnel kiln, 165m fully automatic natural gas fired high temperature tunnel kiln, two 1400°C shuttle kilns and four automated production lines.

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What is Insulating Brick

Insulating bricks are bricks that have been designed to have thermal insulation properties. They are used in the construction of buildings to improve energy efficiency and reduce heat transfer. Insulating bricks can be made from various materials such as foam, waste tire chips, urethane, and metal. If you want to know the specifications and prices of Insulating Brick, please contact us!

Advantages of Insulating Brick

Extremely Lightweight Compared
How can someone talk about fire bricks and not start with how lightweight they are? We have mentioned this earlier as well. Because of this, they are highly useful in industrial applications.
Their lightweight characteristics result in easier and faster installation. This directly reduced the construction time of the furnaces, boilers, etc.
Their lightweight nature results in lower labor costs due to their ease of handling.
However, despite their lightness, fire bricks from a premier insulating Fire Bricks supplier provide robust structural integrity. They guarantee longevity and reduce the need for replacements.

Superior Insulation Properties
As evident by their name, these fire bricks have excellent insulation properties. This directly minimizes the heat loss, which is quite common in the manufacturing process. Its direct benefits are:
Resulting in enhanced energy efficiency. This significantly cuts down on the energy consumption.
These superior insulation properties also lower operational costs. This is due to the reduced need for fuel and power to maintain high temperatures.
The stabilized internal temperature also optimizes the heat-dependent processes.

High-level Temperature
Fire bricks are renowned for their ability to withstand and maintain structural integrity at high temperatures. This results in:
Prolonging the lifespan of kilns, furnaces, and other heat-intensive installations.
This resistance also decreases the downtime and costs that are associated with any kind of maintenance & repairs.
You are assured of consistent and reliable results with fire bricks.

Energy-efficient & Durable
We live in a world where environmental concerns have become a big priority. Not only is efficiency important but so is sustainability. And these acid proof products do play their part.
Due to their low energy consumption, there are reduced greenhouse gas emissions in industries.
Usage of fire bricks also reduces material waste and resource consumption
Fire bricks directly contribute to a greener, more sustainable industrial operation by minimizing the ecological footprint.

Types of Insulating Brick

Mullite Insulation Brick
Mullite Insulation Brick, or Lightweight Mullite Brick, is a kind of high alumina refractory material made of mullite as the main crystal phase, which is new type refractory material for thermal insulation that can directly contact fire with features of high-temperature resistance, lightweight, low thermal conductivity, good thermal shock resistance and great energy saving. Mullite Insulation Brick can be used for the top of hot blast stove, stack and bottom of blast furnace, regenerative chamber of glass melting furnace, linings of cracking furnace, ceramic roller kiln, electroceramics shuttle kiln, glass crucible, and all kinds of electric furnace.

Fireclay Insulation Brick
Fireclay Insulation Brick is made of fireclay as the main raw material with 30~48% Al2O3 content. Adopt manufacturing process of inclusion of combustible materials and foaming method. Fireclay Bricks can be used in with features of high strength, low thermal conductivity and low impurities.

High Alumina Lightweight Insulation Brick
High Alumina Lightweight Insulation Brick is a kind of thermal insulation refractory materials with lightweight feature that made of mullite and gass phase or corundum combining and containing over 48% alumina content. Its bulk density is 0.4~1.35g/cm3, apparent porosity is 66~73% and cold crushing strength is 1~8Mpa. High alumina insulation brick has properties of low bulk density. Good thermal shock resistance, low thermal conductivity, quality stability and thermal insulation, which can be used in all kinds of kiln and furnace as linings or heat insulating layer.

Silica Insulation Bricks
Silica Insulation Bricks, a kind of high temperature thermal insulating refractory materials with features of high purity, high strength, high refractoriness under load, load apparent porosity and low impurities content that are now widely used in all kinds of high temperature melting furnace. Silica Insulation Brick can resist acid gas erosion strongly and keep volume stability in the high temperature up to 1420 ℃. Silica Insulation Brick plays great performance in the industrial kiln such as thermal insulation, reducing energy consumption and improving thermal efficiency and also can efficiently protect the main refractory materials internal layer and prolong the service life of furnace. In the glass furnace, silica insulation brick is mainly used for wall of regenerative chamber and arch.

Alumina Bubble Brick
Alumina Bubble Brick is manufactured with alumina hollow ball as the main raw material, high-performance ultrafine powder as the annexing agent and organic substance as the binding agent through drying and then firing in the high temperature shuttle kiln, the temperature reach up to 1750℃. Alumina Bubble Brick has properties of light weight, high temperature resistance, low linear change on reheating, good thermal shock resistance, lowering the kiln cost and saving energy. Alumina Bubble Brick is widely used as linings and thermal insulation materials in the high temperature kilns of industrial ceramics, electronic ceramics, petrochemical engineering and metallurgy industry.

Application of Insulating Brick

Industrial Furnaces and Kilns
One of the primary applications of wonderful brick as insulation is in industrial furnaces and kilns. These structures require high-temperature insulation to prevent heat loss and maintain desired operating temperatures. Insulation bricks are used to line the walls, roof, and floor of the furnace or kiln, creating a barrier that minimizes heat transfer to the surrounding environment. This helps to improve energy efficiency, reduce fuel consumption, and ensure uniform heat distribution within the furnace or kiln.

Boiler Insulation
Insulation bricks also find extensive use in boilers, where they serve as an insulation layer to minimize heat loss and improve energy efficiency. By preventing excessive heat dissipation, insulation bricks help boilers maintain optimal operating temperatures, leading to improved combustion efficiency and reduced fuel consumption. Additionally, insulation bricks enhance safety by reducing the risk of burns and protecting against external thermal damage.

Chimneys and Flues
In applications where hot gases are being vented, such as chimneys and flues, insulation bricks are employed to ensure proper thermal insulation. These bricks line the interior walls of the chimney or flue, preventing excessive heat transfer to the surrounding structure. Insulation bricks in chimneys and flues help maintain the temperature of the exhaust gases, ensure efficient drafts, and prevent damage to nearby materials due to high temperatures.

Foundries and Metal Processing
Foundries and metal processing facilities often utilize insulation bricks in their operations. These bricks provide insulation and protection in various equipment, such as ladles, tundishes, and crucibles. Insulation bricks help to maintain the high temperatures required for melting and casting metals while minimizing heat loss and ensuring energy efficiency. They also contribute to the overall safety of the process by reducing the external surface temperature of equipment, preventing burns and improving working conditions for operators.

Thermal Insulation in Buildings
Insulation bricks are not only limited to industrial applications but also find use in thermal insulation for residential and commercial buildings. These bricks can be used in the construction of walls, floors, and roofs to provide effective thermal insulation, reducing heat transfer and improving energy efficiency. Insulation bricks help to create a comfortable indoor environment, reduce heating and cooling costs, and contribute to sustainable building practices.

Hot Blast Stove
Hot blast stoves are often used for hot blast (called blast furnace blast), which communicates with the blast furnace's air extractor. Depending on the shape and location of the hot blast stove, the temperature range is between 1000 and 1300 °C. The hot air is in the range of 2300～6500m3·min-1.
Lightweight silica bricks are used in blast furnace blasting parts and communicate with the blast furnace exhauster. The temperature range of lightweight silica bricks is between 1000 and 1300 °C. It can meet the whole cycle life of the hot blast stove. The bulk density of the lightweight silica bricks used is 1250kg·m-3 or 1050kg·m-3. Mainly due to their higher strength.

Thermal Insulation of Furnace Vaults
During the glass melting process, very high temperatures are reached in the raised lower part of the dome. Depending on the type of glass, the temperature is around 1600°C. Lightweight layers are usually designed as two or more layers.
Lightweight silica bricks are primarily exposed to these temperature loads. It is expected that the single layers of the vault (structural layer and lightweight layer) have the same or similar expansion properties. Silica bricks with a bulk density of 1250kg·m-3 or 1000kg·m-3 can meet the requirements of the dense layer. The next layer uses silica bricks with a bulk density of 800kg·m-3 or 600kg·m-3.
Lightweight silica bricks can be freely stacked on the furnace arch or bonded with silica refractory mortar. There is no chemical load during the furnace service period (several years). Lightweight silica bricks are mainly used because the chemical and mineral composition of the working linings is similar to dense silica bricks.

How to Choose Insulating Brick

Kinds of Brick
You should start by discussing this with the manufacturer or supplier to find out about the different types. Most manufacturers will provide some basic information about their products. Ask for technical information on how long each type of fire brick is expected to last and details on glaze quality, so that you are not misled. You can then decide what type is best for your project and which has the best value for money. It is always better to choose insulating refractory bricks.

Firing Temperature
If you are not sure what your firing temperature will be, you should discuss this with your supplier. The ideal type of insulating firebrick will be one that is designed for the right type of firing temperature.

Clinker Content
This is another important factor because the clinker content of bricks can vary considerably from one type to another. A brick with a low clinker content means that it has been fired at lower temperatures. This type is less likely to break or crack and will have a longer life.

Glaze Quality
The glaze on bricks can also vary in quality, depending on the manufacturer. Some bricks have an inner layer of glaze that can crack or flake off when the brick is fired. The material used for this inner layer of glaze should be as pure as possible so that it will be stronger and not disintegrate over time due to oxidation.

Strength and Durability
Some types of bricks are more durable than others, which can affect their strength and longevity in your furnace. Different types are available depending on the furnace manufacturer, so you should contact them directly to find out which option will suit your needs the best.

Cost
It is important to review the cost of the brick that you have chosen and compare it with the type of brick you are considering. You should also consider factors such as delivery and installation costs as well as any installation requirements.

Length and Width of Bricks
The length and width of bricks can vary, which can affect your installation plans. If you are not sure which length and width are best for your furnace, ask your supplier for advice. You may need to add a mortar joint to ensure that each brick fits properly in your furnace. This adds an extra layer of protection but will mean losing some insulation effectiveness. It is a quick calculation to make when deciding on the best fiber refractory insulator.

Frequently Asked Questions

Q: What is the difference between insulating brick and fire brick?

A: Insulating brick is a kind of light weight thermal insulation material, density is 0.6-1.2g/cm3. For fire brick, the density is over 2.0g/cm3. Insulating bricks are focus on thermal insulation. Fire bricks are focus on refractoriness.

Q: Is it worth insulating brick walls?

A: There are so many advantages that come with having a wall insulated, but even though brick walls are good insulators, but old homes made of bricks are generally not as energy efficient, Because of this, it is recommended to have your brick walls insulated when your resources allow you to do it.

Q: How do you insulate bricks?

A: For solid brick walls, the process involves affixing timber studs to the walls, separated by a layer of damp-proof membrane. Subsequently, the insulated plasterboard is securely mounted onto the battens using appropriate fasteners, followed by a surface skim.

Q: How are insulating bricks made?

A: Heat insulating firebricks are conventionally made by a general manufacturing method in which a refractory clay is added to a highly refractory aggregate such as alumina, alumina silica, silicic acid, magnesia or zirconia, and to a pore making granular combustible substance such as wood chips, foamed polystyrene or coke. Sufficient water is added to the mixture to enable it to be moulded and then the mixture is kneaded or mixed, and is extruded, pressed or cast into bricks. The cast bricks are then dried and fired as required.

Q: What is the function of insulating brick?

A: Insulating bricks are bricks that have better insulation property, compressive property, cracking resistance, and water resistance. They also have an air purification function and a wide application range.

Q: Which property is the most important for an insulating brick?

A: The desirable feature of insulating bricks is the low thermal conductivity, which usually results from a high degree of porosity. Structure of air insulating material consists of minute pores filled with air, which have very low thermal conductivity.

Q: Is brick a better insulator than concrete?

A: Clay bricks absorb heat during the day and release it slowly at night, making the interior temperatures of a structure relatively constant. While concrete isn't as great a temperature insulator as brick, it is more soundproof because of its dense makeup.

Q: What temperature are insulating bricks?

A: CT firebricks are made from high-purity refractory clays, temperature of use ranging from 1100 oC to 1700 oC, each grade is formulated to meet specific thermal and physical requirements. The organic filler burns out during manufacture to give a uniform, control pore structure.

Q: What is the difference between fire bricks and insulation bricks?

A: Thermal insulation bricks generally do not directly contact the flame, while refractory bricks generally directly contact the flame. Refractory bricks are mainly used to withstand the burning of flames. Generally divided into two types, namely unshaped refractories and shaped refractories.

Q: What are the properties of brick insulation?

A: Bricks possess a low thermal conductivity which averages between 0.5 – 1.0 W/(m/K). The thermal conductivity of a material directly relates to its ability to effectively transfer heat through it.

Q: What is insulating firebrick made of?

A: The Insulating Fire Brick (IFB) is a type of soft brick made of refractory ceramic material, a blend of alumina and silica, that can withstand extremely high temperature applications and has a low thermal conductivity.

Q: What are the materials used in insulation bricks?

A: Light Weight Thermal Insulation Brick is developed using premium raw-materials such as vermiculite, diatomite, ash, hollow sphere corundum, etc. These raw materials are taken in the right quantities and then mixed with water to pour into the mold.

Q: What is the purpose of a refractory brick?

A: A fire brick, firebrick, fireclay brick, or refractory brick is a block of ceramic material used in lining furnaces, kilns, fireboxes, and fireplaces. A refractory brick is built primarily to withstand high temperature, but will also usually have a low thermal conductivity for greater energy efficiency.

Q: Is brick insulation better than wood?

A: Wood has several advantages over other building materials like brick, steel or concrete – Especially when it comes to insulating homes and businesses. For example, brick and concrete are both dense and heavy materials that are poor insulators with high thermal diffusivity scores.

Q: Are bricks stronger than cement?

A: Concrete blocks must have a minimum compressive strength of 1,900lbs per square inch, but many blocks' strength vastly exceeds this limit. If we measure the strength in psi, concrete blocks come out on top over bricks. The former can withstand 3,500 psi, whilst bricks' limit is found at 3,000 psi.

As one of the leading insulating brick manufacturers and suppliers in China, we warmly welcome you to buy high-grade insulating brick in stock here from our factory. All customized products are with high quality and competitive price. For free sample, contact us now.

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