High Alumina Bricks
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Acid-Resistant High Alumina Bricks
Low Creep Fire Clay Bricks
High Alumina Insulation Bricks
Phosphate High Alumina Bricks
High Alumina Refractory Bubble Bricks
Corundum Bricks
Corundum Mullite Bricks
Chrome Corundum Bricks
High Alumina Refractory Castables
Corundum Castables
Corundum Mullite Castables
Zirconia-Corundum Casting Castables
Steel Fiber Castables
Mullite Castables
High Alumina Insulating Castables
Silicon Carbide Castables
Magnesia Alumina Spinel Castables
Refractory Ramming Mass
High Alumina Refractory Mortar
High Alumina Refractory Cement
Acid Resistant Castables
Alkali Proof Castables
Magnesia Bricks
Silica Bricks
Silicon Carbide Refractories
Refractory Precast Blocks
Chrome Corundum Casting Castables
Chrome Corundum Refractory Bricks
Refractory Ceramic Balls
Refractory Honeycomb Ceramic Regenerator
Refractory Corundum Ceramic Balls
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Refractory cement is the connecting material between refractory bricks and refractory bricks. It is one of the amorphous refractory materials. Although refractory cement is divided into various materials, there are several keys to judging the availability of refractory cement. The first is the fluidity and viscosity of refractory cement. If the refractory cement has insufficient viscosity, it will not bond during construction, which will delay the construction process. Judging the adhesion at the construction site means that after adding an appropriate proportion of drinking water to the refractory cement, if it is phosphate mud, after adding an appropriate proportion of phosphoric acid binder on site, fill it with a shovel or other utensils, and it will be continuous when it falls Yes, which means liquidity is OK. The other is bonding time. If it takes two hours for the mortar after construction, it will not condense for a maximum of three hours. Indicates that the use effect is not good. Many manufacturers will use two refractory bricks to wipe the refractory cement before construction. If the initial condensation occurs after 30 times, it means that the refractory cement has a good connection. Since refractory materials are an applied discipline, some...
We know that aluminum solution has very high activity and permeability. During the smelting process of an aluminum melting furnace, adhesion and penetration often occur that are not conducive to smelting. These will also lead to more impure impurities in the smelted metal. These reasons are all caused by the poor selection of refractory materials for aluminum melting furnaces. To solve this problem, a refractory material such as non-stick aluminum castable has appeared, which is produced for such aluminum melting furnaces. The reason why non-stick aluminum castables can solve the above problems is mainly that they add different proportions of additives based on high-aluminum castables, which can make the castables dense, and good density can prevent aluminum At the same time, it can form a reflective layer on the surface of the castable to prevent the aluminum liquid from bonding to the castable and destroying the structure of the castable, thus preventing the penetration and adhesion of the aluminum liquid. Non-stick aluminum castables can be used in many aluminum melting furnaces mainly because they can extend the service life of aluminum melting furnaces, do not produce aluminum ash or corundum during the smelting process, and can prevent molten aluminum from...
We all know that high-aluminum castable is a refractory castable with relatively high alumina content. It is widely used in the construction of high-temperature kilns. It has the characteristics of superior refractory performance, high-temperature resistance, corrosion resistance, and oxidation resistance. Therefore, the range and frequency of use are very high, but it is very important to choose high-aluminum castables that are effective when purchasing. Its quality determines the service life of the high-temperature kiln and the smelted materials during use. The quality of the material. First of all, we need to know that high-aluminum castables are composed of aluminates, silicates, oxides, etc. To ensure the effect in high-temperature environments, we must strictly follow the requirements when proportioning raw materials. , incorrect proportion of raw materials will seriously affect the performance of the entire castable, so we need to confirm with the manufacturer’s technical staff when purchasing, and inform the technical staff according to the occasion of use, and the technical staff will according to your use occasion There are many options for you. Secondly, the quality of high-aluminum castables during our use mainly depends on the following aspects, including compressive strength, thermal stability, thermal conductivity, thermal expansion coefficient, etc. These...
A ceramic honeycomb regenerator is an energy storage refractory material widely used in high-temperature kilns. Its special structure gives it unique advantages in heat storage and heat conduction, and it has become a very frequently used material in the field of thermal engineering. Material is widely used in steel plants, waste incinerators, waste gas treatment thermal equipment, chemical plants, smelting plants, power plants, power industry boilers, gas turbines, engineering heating equipment, ethylene-cracking furnaces, and other industrial kilns. The main purpose of the ceramic honeycomb regenerator is to improve the heat exchange efficiency of thermal equipment while reducing the energy consumption of thermal equipment and maximizing the use of thermal energy. During use, when the high-temperature kiln is heating, the ceramic honeycomb regenerator stores heat. When the high-temperature kiln stops heating, to ensure the temperature in the furnace, the ceramic honeycomb regenerator begins to release its heat to ensure that the temperature in the furnace does not drop rapidly. This ensures that the use of heat during the smelting process reduces fuel consumption. The cross-sectional holes of honeycomb ceramic regenerators mainly have two hole structures: square and regular hexagonal, and the holes are straight channel structures parallel to each other. This...
High alumina refractory bricks are a type of shaped refractory material with an alumina content greater than 75%. They are widely used in the construction of various high-temperature kilns. There are many classifications of refractory bricks. High-alumina bricks are classified according to their use in high-temperature kilns. There are also differences in the ratio of raw materials for different parts of use. Today, the editor mainly takes you to understand the classification and introduction of refractory bricks and high alumina bricks. Classification based on different ratios of raw materials High alumina refractory bricks are classified according to different raw material ratios into first-grade high alumina bricks, second-grade high alumina bricks, third-grade high alumina bricks, special grade high alumina bricks, corundum bricks, low creep high alumina bricks, and dense high alumina bricks, aluminum carbide high alumina bricks, andalusite high alumina bricks, etc., are the types of high alumina bricks we commonly use in high-temperature kiln construction. We can choose different brick types depending on the use. Classification by appearance From the appearance point of view, high alumina bricks are mainly divided into standard bricks, ordinary bricks, wedge-shaped bricks, special-shaped bricks, and special-shaped bricks. Depending on the location of use, we will...
The construction of high-aluminum castables should be carried out in strict accordance with the construction standards. During the mixing and pouring processes, it should be used in strict accordance with the proportions. During the construction process, attention should be paid to construction safety to ensure your own safety. Preparation of high alumina castables before construction 1. Construction equipment and tools must be cleaned before the construction of high-aluminum castables and must be thoroughly cleaned before use to prevent impurities from being mixed in during the construction process and deteriorating the material properties. 2. The mixing water for high-alumina castables should use clean water suitable for drinking, and sewage or other water containing harmful impurities should not be used. Mixing and pouring of high alumina castables 1. The mixing equipment for high alumina castables is a forced mixer. 2. The amount of water added to the castable is 7%-8%. The water quality should be a clean water source, and the amount of water added should be strictly controlled according to the proportion. 3. Before pouring, pre-embedded anchors or other metal parts should be coated with asphalt or wrapping tape before pouring. The template should be coated with a layer of engine...
Silica refractory bricks are called silica bricks, which are acidic refractory bricks. They are suitable for high-temperature kiln linings in acidic atmospheres or solutions. In order to improve the overall performance of masonry, they are often used with refractory mud. Silicon refractory mud should be used as joint materials. Expansion joints should be reserved and grouted during masonry to improve the overall quality of the masonry. Features of silica refractory bricks Silica brick is a refractory brick containing more than 93% silica, made of silica (>96%) as the main raw material, mineralized, and binder, through mixing, molding, drying, firing, and other processes. Its main features are as follows: 1. Silica brick is an acid-resistant refractory material. The acid slag-resistant agent has strong acid solubility and poor alkali corrosion resistance. 2. The load-softening temperature of silica bricks is relatively high, generally between 1640 and 1680 °C. 3. When the temperature is higher than 300℃ and close to the melting point, the silica brick is stable. At 1450°C, the volume expansion rate is 1.5%-2.2%, which is beneficial to ensure the strength and airtightness of the masonry structure. 4. The disadvantages of silica bricks are thermal shock resistance (water cooling 1-4 times), low...
Rotary kiln is the key equipment for hazardous waste treatment and is widely used in the domestic hazardous waste treatment industry. The quality of rotary kiln refractories affects the stable operation of rotary kiln. The selection and maintenance of rotary kiln refractories in hazardous waste treatment are analyzed for reference in specific engineering applications. Incineration of hazardous waste in a rotary kiln usually requires several stages such as drying, pyrolysis, burning, and combustion. After these stages, the harmful components in the hazardous waste are fully decomposed and destroyed at high temperatures, forming high-temperature smoke and slag. These high-temperature fumes and slag can cause erosive damage to the refractories built in the rotary kiln. Therefore, the rotary kiln refractories used for hazardous waste incineration should have the following characteristics: 1. High temperature resistance. It can operate for a long time in a high-temperature environment above 800 °C. 2. High strength and excellent wear resistance. In order to withstand the expansion stress at high temperatures and the stress caused by the deformation of the rotary kiln shell, the refractory material in the rotary kiln needs to have a certain mechanical strength. 3. Good chemical stability and thermal stability to resist the corrosion...
High-alumina brick refractory brick is a shaped refractory material formed and calcined from high-alumina bauxite or other raw materials with high alumina content. It is an indispensable raw material for lining high-temperature kilns. It has high thermal stability, the refractoriness can reach above 1770℃, and it has good slag resistance. The aluminum content of high-alumina refractory bricks has different aluminum content according to the different uses, but only when the alumina content reaches 48% or more can it be called high-alumina bricks. High alumina refractory bricks can be divided into first-grade high-alumina bricks, second-grade high-alumina bricks, third-grade high-alumina bricks, special-grade high-alumina bricks, corundum bricks, low-creep high-alumina bricks, and dense High alumina bricks, aluminum silicon carbide high alumina bricks and andalusite high alumina bricks, the following is the introduction of the aluminum content of each high alumina brick: 1. Three-grade high alumina bricks. The third-grade high-alumina brick refers to the refractory brick with an alumina content between 48%＜AL2O3＜60%. 2. Secondary high alumina brick. Secondary high alumina bricks refer to refractory bricks with an alumina content of 60%≤AL2O3＜70%. 3. First-grade high alumina brick. First-grade high alumina bricks refer to refractory bricks with an alumina content of 70%＜AL2O3≤75%. 4. Super high alumina brick....
Sintered mullite brick is a kind of high-temperature mullite brick. It uses high bauxite, industrial alumina, and refractory clay as raw materials, and adds charcoal or coke fine particles as reducing agents. After forming, it is manufactured by reduction electrofusion The sintering temperature of sintered mullite bricks is usually above 1600°C. Such a high sintering temperature makes it difficult to produce sintered mullite bricks on a large scale. Using the activity of active SiO2, adding an appropriate amount of active SiO2 to the ingredients can make sintered mullite bricks Stone bricks are sintered at 1550°C. 1. Physical indicators of sintered mullite bricks The apparent porosity of the sintered mullite brick is 20.88%, the bulk density is 2.61g/cm³, the compressive strength at room temperature is 84.4MPa, and the creep rate at 1550°C and 50h high temperature is 0.796%. 2. The difference between sintered mullite bricks and fused mullite bricks The high-temperature flexural strength of sintered mullite bricks is much higher than that of fused mullite bricks, which is due to the interlacing of some small but well-developed crystal networks in the former structure. The latter has good volume stability and excellent creep resistance due to larger crystals. Moreover, fused mullite bricks...
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