white calcium silicate bricksThe use of anti-aging materials requires knowing the various features and characteristics of these materials in the places of use. The diverse conditions of the application areas have complications that must be taken into account. Chamouti products are the most widely used types of refractories that are used for most general purposes up to 1350 degrees Celsius and non-alkaline and acidic environments. These products are divided into two categories: bricks and special materials. Clay bricks are made of concrete and are much heavier than other building materials. This makes the whole building bear more weight and increases the cost of the whole project. The sound insulation effect of clay brick is weak. When outside sound is reflected into the clay brick, it cannot isolate the sound well because it does not have many air holes. The main raw material of clay brick is soil, which harms the environment. Clay brick production easily leads to loss of soil and water. For this reason, in China, Kali bricks are gradually banned. Features of clay refractory bricks: The color of these bricks is yellowish white or light brown. The strength of refractory bricks ranges from 3.5 N/mm2 to 48.26 N/mm2. The water absorption percentage of refractory bricks varies between 4 and 10%. These bricks are generally used in the lining of ovens, furnaces and fireplaces. 
It is called a wide range of refractory bricks that contain 45 to 99 aluminum oxide (Al2O3). According to the percentage of aluminum consumed in these refractory bricks, different types of aluminum bricks can be mentioned. These bricks contain 85% of aluminum (Al2O3). 85% aluminum brick with high mechanical, abrasion and thermal resistance. The baking temperature of these bricks is about 1200 to 1800 degrees Celsius. This type of brick is used for the safety layer of the electric arc furnace, the roof of the electric arc furnace, the safety zone of the cement furnace, the exit zone of cement furnaces and general applications in places with high abrasion resistance. This type of aluminum firebrick is made of bauxite and various amounts of alumina and clay. The characteristics of this alumina brick are medium porosity, high creep resistance and high strength against high temperature. It is used in the roof of electric arc furnaces and the exit areas of cement furnaces. This group of aluminum refractory bricks is made of bauxite and various amounts of alumina and clay. The characteristics of this alumina brick are medium porosity, high creep resistance and high strength against high temperature. It is used in the roof of electric arc furnaces and the exit areas of cement furnaces. One of the most famous colors of firebricks is red and brown, but don't forget that there are many color variations in firebricks and they can change color from black to white. Even the existence of vivid colors and the color of nature can be seen in refractory bricks, which makes it create a unique view. 
white silica bricks
Refractory materials are based on six main oxides, SiO2, ZrO2, MgO, CaO, Cr2O3, Al2O3 and compounds between them, which are often combined with carbon. The raw materials of the refractory industry are magnesite, bauxite, silica, dolomite, refractory clays, pyrophyllite, silmanite, chromite, graphite, zircon, vermiculite, diatomite, and olivine. Refractory products are used for various applications, including the iron and steel industry, which is the largest consumer of refractory products. Other industries that consume refractory products are oil, gas and petrochemical industries. They are also widely used in glass industries, power plants, nuclear reactors, cement and lime kilns, waste incinerators (to produce electricity), non-ferrous metal industries (copper, aluminum, zinc, lead, etc.) and gas turbines. Silica brick is one of the types of refractory bricks. This brick can withstand up to 1700 degrees Celsius and can be used in coke, steel and glass furnaces. Refractory bricks are made in different types and each of them can withstand the temperature. Due to their high resistance to heat, firebricks are used in fireplaces, inner linings of industrial furnaces, etc. The general material of refractory bricks or refractory bricks is made of refractory clay, which is a type of porcelain or high quality ceramic. The firing temperature of refractory bricks is around 1500 degrees Celsius. The basis of the materials used in making such bricks are very special minerals and refractory mineral pumice, and refractory materials have high resistance to maintain physical and chemical characteristics. 
Silica brick is one of the most common types of acid refractories, the main raw material of which is quartzite or refractory silica stones, which were widely used in various industries in the past, especially the steel industry. Due to their high refractoriness, silicon refractories are compatible with high temperature working environments and have high mechanical strength and rigidity up to temperatures almost close to their melting point. They also have the ability to resist dust, soot and acid slag. Silica bricks have a thermal expansion of 12 to 15 mm/m at temperatures of 800 to 1000 degrees Celsius, but they exhibit negative expansion at temperatures higher than their limits. At temperatures below 500 degrees Celsius, these bricks have very low resistance to thermal shock, but at temperatures above 600 or 700 degrees, their resistance to thermal shock increases and they show good and acceptable shock resistance. . Therefore, the heating of furnaces covered with silicon bricks should be done slowly and carefully. The density of silica brick is 2.2 to 2.35 grams per cubic centimeter. This category of refractory bricks is very popular and has a special place in construction and industrial works. In the past, silica facing refractory bricks were used to cover the inner walls of steel production furnaces. Due to its heat conductivity and impermeability to gases, silica bricks are used to cover the inner walls of glass paste production furnaces in glass factories, gas-fired coking furnaces and ceramic production furnaces, hot air blowing devices and roofs of electric furnaces. They have a special use. In addition to the advantages that this brick has, it also has some weaknesses, which are very insignificant compared to the advantages of brick. Among these weaknesses is their low thermal shock resistance, which show low shock resistance at temperatures below 500 degrees. Another disadvantage of this brick is weakness in alkaline environments and in contact (adjacent) with game slags.