High Alumina Bricks
Fused AZS Zirconia Corundum Bricks
Lightweight Mullite Bricks
Andalusite Bricks
Low Creep High Alumina Bricks
Fire Clay Bricks
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
Home > Knowledge
Lightweight acid-resistant castables are made of a water glass as a binder, acidic or semi-acidic refractory materials as aggregates and powders, and a small amount of coagulant. It has good physical and chemical properties and has a small volume density. , Add water to solidify quickly, and use high temperature, compressive strength increases with the increase of temperature and acidity, small thermal conductivity, small linear expansion coefficient, and so on. Lightweight heat-insulating and acid-resistant castable have good workability, convenient construction, and a moderate initial setting, and final setting time, the strength continues to increase after high-temperature baking, and it is impermeable and acid-resistant. Lightweight heat-insulating and acid-resistant castable have good physical and chemical properties, so it is widely used, mainly used as anti-corrosion flue and chimney lining, acid storage tank, pickling tank lining, nitric acid concentration tower lining, acid recovery Furnace lining and other container linings corroded by acidic high-temperature gas, etc. Precautions for construction of light acid-resistant castable 1. Lightweight heat-insulating and acid-resistant castables cannot be used in a short period of time and in a working environment with large temperature differences. 2. The construction environment of lightweight heat-insulating and acid-resistant castables needs to be kept dry, and its...
The refractory material of the gasifier can be divided into three parts: cone bottom, cylinder and vault. There is a certain expansion space between the vault and the furnace shell, so that the lining refractory bricks expand upward when the gasifier is running. It can be divided into several levels from inside to outside. Taking the cylindrical refractory material as an example, it is divided into four layers: fireproof refractory material layer, backing layer, heat insulation layer and compressible layer (the vault is the same as the bottom of the cone), and there is an expansion of 3~5mm between the three layers gap. Expansion in a convenient radial direction is unrestricted. 1. Refractory brick veneer The working environment of refractory bricks is very harsh, and design units and users are very cautious about their structural design and material selection. Refractory surface layer: also known as hot face brick, is a high temperature resistant and corrosion resistant consumable layer. Typically, high chromium materials are required, which require high temperature chemical stability, high creep strength and thermal shock resistance. The thickness of the fire surface from the barrel to the CWS gasifier is about 230mm. Use 90 chrome aluminum zirconium bricks (high...
High alumina anchor bricks are refractory bricks used in heating furnaces. High alumina anchor bricks are also called hanging bricks. They are mainly used to connect and support structures of refractory bricks and ordinary fired bricks, for heating furnace roof walls, or other components. High-alumina anchor bricks use natural high-grade bauxite as the main refractory raw material, add soft or semi-soft clay as a binder to high-alumina clinker, start batching, mixing, molding, drying, and finally firing. Formed high alumina refractory bricks. Under normal circumstances, the alumina content of high-alumina anchor bricks is above 55%. High-alumina anchor bricks can be produced and processed according to customer needs. The load softening temperature of high-alumina anchor bricks can reach 1550°C, which can meet the requirements of heating furnace roof lining. performance requirements. Features of high alumina anchor bricks for heating furnace: 1. The volume is stable at high temperatures. 2. Good corrosion resistance. 3. High softening temperature under load. 4. Anti-peeling, high compressive strength. The high-alumina anchor brick is a special-shaped high-alumina refractory brick, including a column composed of a hanging end and an anchor body, and an interval separation groove is arranged on the surface of the anchor body along the length...
Refractory castable is a kind of unshaped refractory material used to build various heating furnace linings. It has strong fluidity and plasticity. It is used to make prefabricated components and install them on the rotary kiln site. The construction of refractory materials should be What are the preparations? Next, Xinhongji Refractory will give you a brief introduction. 1. Determine the shape and structure of the castable facilities and clean them. 2. Process channel setting. 3. Construction machinery, vibrating tools, etc. must have complete parts in good condition. 4. Anchor type, proportion, position, and quality of cold welding. Metal anchors must be treated with expansion compensation. 5. The surrounding refractory brick insulation layer should take preventive measures for castable dehydration (glue). 6. The packaging and delivery date of the castable, and conduct a pre-test to check whether it is invalid. 7. The quality of water used for construction must meet the quality of drinking water. 8. Implementation of construction technical inspection. 9. Pouring procedure. Through the above inspections, in order to facilitate our follow-up construction, if there is any unqualified replacement in time to avoid problems during the construction process, incorrect construction methods will bring us great losses in the later...
The lime kiln is mainly a kind of equipment used to produce industrial lime. Common kiln mouths include sleeve kiln, double-chamber kiln, double-beam kiln, rotary kiln, mixed-material vertical kiln, etc. The lime kiln is mainly composed of a kiln body, It is composed of a feeding device, material distribution device, combustion device, ash unloading device, electrical appliances, instrument control device, dust removal device, etc. When choosing refractory in lime kiln construction, it should be selected according to different kiln shapes and actual use conditions. Today, Xinhongji Refractory will briefly introduce which kind of lime kiln castable is better. Limekiln Lime calcining kiln has two types of kiln type: vertical kiln and rotary kiln. Generally, castables are used in the two positions of the lime rotary kiln preheater and the front and rear kiln mouths, but the two positions are based on the usage conditions. The castables used are different. 1. Refractory materials for the working layer: high alumina bricks (or clay bricks). The brick design of the rotary kiln is very important. In the high-temperature combustion section and the impact section of cloth feeding, refractory castables should be used instead of refractory bricks in the working layer, which have better...
Alkali-resistant refractory castable is a kind of refractory castable that can resist the erosion of metal oxides. It is mainly composed of refractory aggregate, binder aggregate, binder, and alkali-resistant agent. If it is divided by porosity If it is more than 45%, it is a light alkali-resistant refractory castable, and less than 45% is a heavy alkali-resistant refractory castable. Characteristics of alkali-resistant refractory castables 1. Good high-temperature performance; 2. Strong alkali resistance and corrosion resistance; 3. Can resist the erosion of sodium salt melt; Applicable scope of alkali-resistant refractory castable Alkali proof castables are mainly used in industrial furnaces with alkali corrosion in industries such as iron and steel, nonferrous metals, glass, machinery, and petrochemical industries. Among them, heavy alkali-resistant refractory castables are mainly used in the kiln tail, kiln head, preheater, discharge port, tuyere, and other parts of the calcined alumina rotary kiln and cement rotary kiln. Lightweight alkali-resistant refractory castable Zhu Yong is used for the top cover of the preheater, the cylinder, and the thermal insulation lining in the kiln of the above-mentioned rotary kiln. The main components of refractory castables 1. The chemical composition of light alkali-resistant refractory castables is generally: Al2O3 content of 30% to...
Honeycomb ceramic regenerator is a porous refractory material often used in industrial. It has many connecting honeycomb parallel channels inside. These honeycomb units are divided by lattice-like thin tap walls, which greatly improves the equipment of the equipment. Heat exchange efficiency is currently widely used in the energy saving of industrial thermal workers. It can effectively improve the efficiency of thermal workers and reduce energy consumption. At the same time, it can improve the overall production volume of thermal workers and improve the quality of the product. It is currently solving energy and quality. The main means of the environment. Features of honeycomb ceramic regenerator 1. Can effectively improve fuel utilization and reduce the energy consumption and exhaust heat loss of the unit. 2. It can improve the heat utilization rate and theoretical burning temperature of the fuel, improve the combustion conditions, and meet the high-temperature requirements of thermal equipment. 3. Improve the conditions for heat exchange in the furnace, and increase the production of equipment and the weight of the product. 4. Increasing fuel utilization, can reduce the discharge of exhaust gas for heat work equipment, reduce the emissions of harmful gases, and improve the environment. Application of honeycomb...
The bricks we usually use to build houses are ordinary red bricks, and the main purpose of refractory bricks is to build high-temperature furnaces, aluminum melting furnaces, and other high-temperature occasions. Although both are bricks, they are essentially the same. There is a big difference, let’s follow the Xinhongji Refractory today to see what the difference between the two is. First. The difference in shape and color From the appearance point of view, except for special-shaped refractory bricks, the shape of general right-angle brick refractory bricks is not much different from that of ordinary bricks, they are all rectangular, but the shapes of refractory special-shaped bricks are different, such as arch foot bricks, anchor bricks, etc., choose according to different usage occasions. Generally, most ordinary bricks are reddish-brown or gray, and the color changes according to the type of soil used in production. Natural refractory bricks are white, but due to the different metal content in the raw materials, the fired color is also different. Similarly, its colors are brown, moss green, red, and jet black. Second. Different usage occasions 1. The use occasions of refractory bricks are generally in the construction of high-temperature kilns and firewalls. Generally, the use...
The steel fiber reinforced corundum and high alumina refractory castables used for the kiln mouth of the rotary kiln are prone to cracking and peeling after many years of use, that is, the thermal shock resistance is not good and the service life is low. As we all know, the thermal shock resistance and alkali resistance of clay bricks are better than those of high alumina bricks because of the low aluminum content; high strength, good wear resistance, and poor shock resistance. In castables for kiln mouth, the Al2O3 content is 50% to 70%, the strength is moderate (both wear resistance and thermal shock resistance are considered), and the drying and compressive strength (1100°C) are about 40MPa respectively. and 70MPa. It should be pointed out that refractory castables are composed of aggregates, powders, binders, and admixtures (materials). The phase composition in the matrix before use is in a non-equilibrium state. A new phase equilibrium will be reconstituted according to the phase equilibrium relationship (that is, to obtain excellent performance and in-situ reaction). Therefore, suitable constituent materials should be selected and the batching design should be optimized to achieve good sinterability, volume stability, corrosion resistance, and high-temperature mechanical properties. Selection of...
Refractory brick is a kind of refractory material used to build smelting furnaces and combustion kilns. It is made of refractory clay or other refractory raw materials. It can withstand high temperatures of more than 1700 degrees. The size of refractory bricks is very large. Choose according to different use environments. Generally speaking, refractory bricks can be divided into shaped refractory bricks and unshaped refractory bricks. 1. Shaped refractory bricks Shaped refractory bricks are generally fixed in size, also known as general refractory bricks. General refractory bricks are divided into five types: straight bricks, thick wedge bricks, vertical thick wedge bricks, vertical wedge bricks, and arch foot bricks. It is generally used for the masonry of right-angled walls and radial walls of thermal equipment in industrial kilns. Usually, the common specifications of shaped refractory bricks are G-shaped bricks and T-shaped bricks. 1. The common straight bricks in our life, their common sizes are: 230*114*65mm, 230×150×75mm, 345×150×75mm, 230×150/135×75mm, 345×150/130 ×75mm, 230×150/120×75mm, 345×150/110×75mm. 2. The common sizes of wedge-shaped refractory bricks that are common in our daily life are: 114×65/35×230mm, 114×65/45×230mm, 114×65/55×230mm, 114×55/45×230mm, 114× 75/45×230mm, 114×75/55×230mm, 114×75/65×230mm, 114×70/60×230mm, 114×85/55×230mm, 114×80/50×230mm. 3. The common sizes of arch foot bricks in our life are:...
Home Tel Email Inquiry
